The Fruit Quality Variation of‘Yuluxiang’Pear at Different Picking Stages and Storage Time

doi:10.16420/j.issn.0513-353x.2024-0741

Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (6): 1553-1574.doi: 10.16420/j.issn.0513-353x.2024-0741

• Cultivation?Physiology & Biochemistry • Previous Articles Next Articles

The Fruit Quality Variation of‘Yuluxiang’Pear at Different Picking Stages and Storage Time

WU Dandan¹^,², LIN Menghua², LI Yahui², LIANG Ying²^,^*(), and ZHANG Zhiyong²^,^*()

¹ School of Food and Biological Engineering，Jiangsu University，Zhenjiang，Jiangsu 212013，China
² Key Laboratory of Food Quality and Safety of Jiangsu Province，Institute of Food Safety and Nutrition，Jiangsu Academy of Agricultural Science，Nanjing 210014，China

Received:2025-02-17 Revised:2025-03-03 Online:2025-06-20 Published:2025-06-20
Contact: LIANG Ying, and ZHANG Zhiyong

Abstract

Abstract:

To clarify the variation of fruit quality of‘Yuluxiang’pear（Pyrus bretschneideri）at different picking stages and storage times，the organic acids，soluble sugars，volatile compounds and storage quality indexes of fruits were determined respectively on the 140 d，145 d and 150 d after flowering. Among them，organic acids and soluble sugars were detected by High Performance Liquid Chromatography and Liquid Chromatograph-Mass Spectrometer，respectively. Volatile compounds were detected by Headspace gas chromatography-ion mobility spectrometry and Headspace solid-phase microextraction-gas chromatography-mass spectrometry. The results showed that with the ripening of the fruit，the firmness of‘Yuluxiang’pear decreased gradually which the 150 d after flowering significantly lower than the 145 d. The soluble solids increased significantly and then decreased slightly at different picking stages. There was no significant difference in the change of total acid. The content of different organic acids in the peel and pulp had different trends at different picking stages. Among them，the content of quinic acid in the peel was the highest，decreasing significantly on the 150 d after flowering，while the content of malic acid in the pulp was the highest，increasing significantly at first and then decreasing significantly. Except for sorbitol content decreased significantly in the peel on the 150 d after flowering，the content of other soluble sugars increased with fruit ripening. Especially for the contents of sucrose，glucose，and fructose in peel，glucose and fructose in pulp were increased significantly. A total of 97 volatile compounds in‘Yuluxiang’pear were identified，in which aldehydes as the dominant substances. 7 volatile compounds were screened and confirmed as characteristic compounds. The characteristic volatile compounds of‘Yuluxiang’pear on the 140 d after flowering were 1-Octen-3-one，（E）-2-Nonenal，（E,E）-2,4-Nonadienal，Furan，2-pentyl-，Butanal，and β-Cyclocitral，among which the Butanal and β-Cyclocitral were the characteristic volatile compounds on the 145 d after flowering. The characteristic volatile compound of‘Yuluxiang’pear on the 150 d after flowering was Ethyl-2-methylproanoate. With the extension of storage time，the firmness of‘Yuluxiang’pear at different picking stages were decreased and the weight loss rate were increased. The quality of‘Yuluxiang’pear picked on the 140 d and 145 d after flowering was better than those on the 150 d when stored for 60 d. It can be concluded that the flavor of ‘Yuluxiang’pear was better picked later，and the quality for storage was better picked earlier. It is advisable to choose the harvest period according to the market and storage needs

Key words: pear, picking stage, quality, volatile compound, storage time

WU Dandan, LIN Menghua, LI Yahui, LIANG Ying, and ZHANG Zhiyong. The Fruit Quality Variation of‘Yuluxiang’Pear at Different Picking Stages and Storage Time[J]. Acta Horticulturae Sinica, 2025, 52(6): 1553-1574.

Figures/Tables 12

References 45

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花后天数/d Days after flowering	单果质量/g Fruit weight	硬度/（kg · cm^-2） Firmness	可溶性固形物/% Soluble solids	总酸/（g · kg^-1） Total acid
140	301.59 ± 3.15 a	3.23 ± 0.24 a	11.27 ± 0.62 b	0.87 ± 0.05 a
145	304.73 ± 6.26 a	2.93 ± 0.29 ab	12.80 ± 0.15 a	0.88 ± 0.09 a
150	307.20 ± 10.87 a	2.68 ± 0.08 b	11.77 ± 0.42 ab	0.74 ± 0.14 a

花后天数/d Days after flowering	单果质量/g Fruit weight	硬度/（kg · cm^-2） Firmness	可溶性固形物/% Soluble solids	总酸/（g · kg^-1） Total acid
140	301.59 ± 3.15 a	3.23 ± 0.24 a	11.27 ± 0.62 b	0.87 ± 0.05 a
145	304.73 ± 6.26 a	2.93 ± 0.29 ab	12.80 ± 0.15 a	0.88 ± 0.09 a
150	307.20 ± 10.87 a	2.68 ± 0.08 b	11.77 ± 0.42 ab	0.74 ± 0.14 a

类别 Type	化合物 Volatile compound			CAS号 Chemical Abstract Service		分子式 Molecular formula	相对分子质量 MW		保留指数 RI	保留时间/s RT		相对迁移时间 DT
醇类Alcohols	3-庚醇3-Heptanol			589-82-2		C₇H₁₆O	116.2		899.3	252.383		1.33783
	顺-2-戊烯醇（Z）-2-Penten1ol			1576-95-0		C₅H₁₀O	86.1		762.1	188.713		1.44506
	1-戊烯-3-醇Pent-1-en-3-ol			616-25-1		C₅H₁₀O	86.1		670.6	158.603		1.34867
	乙二醇二甲醚1，2-Dimethoxyethane			110-71-4		C₄H₁₀O₂	90.1		651.7	154.307		1.30380
	乙二醇丁醚2-Butoxyethanol			111-76-2		C₆H₁₄O₂	118.2		906.1	256.891		1.18231
	2-己醇2-Hexanol			626-93-7		C₆H₁₄O	102.2		816.3	210.419		1.26772
	4-己烯-1-醇4-Hexen-1-ol			6126-50-7		C₆H₁₂O	100.2		886.2	244.761		1.46307
	正己醇1-Hexanol			111-27-3		C₆H₁₄O	102.2		878.1	240.506		1.32130
	反式-2-己烯-1-醇（E）-2-Hexen-1-ol			928-95-0		C₆H₁₂O	100.2		873.4	238.081		1.18006
醛类Aldehydes	2-甲基丁醛2-Methylbutyraldehyde			96-17-3		C₅H₁₀O	86.1		661.5	156.524		1.16917
	2-己烯醛2-Hexenal			505-57-7		C₆H₁₀O	98.1		858.6	230.792		1.51165
	反式-2-庚醛Trans-2-Heptenal			18829-55-5		C₇H₁₂O	112.2		960.5	295.962		1.25501
	庚醛Heptanal			111-71-7		C₇H₁₄O	114.2		899.0	252.372		1.34091
	3-甲基-2-丁烯醛3-Methyl-2-butenal			107-86-8		C₅H₈O	84.1		775.5	193.022		1.11013
	正戊醛n-Pentanal			110-62-3		C₅H₁₀O	86.1		700.5	166.832		1.19381
	异戊醛3-Methyl butanal			590-86-3		C₅H₁₀O	86.1		656.4	155.592		1.18117
	（E,E）-2,4-己二烯醛（E,E）-2,4-Hexadienal			142-83-6		C₆H₈O	96.1		911.1	260.399		1.12014
	反式-2-己烯醛（E）-2-Hexenal			6728-26-3		C₆H₁₀O	98.1		832.5	217.925		1.18148
	反式-2-戊烯醛Trans-2-Pentenal			1576-87-0		C₅H₈O	84.1		749.9	183.655		1.10252
	正丁醛Butanal			123-72-8		C₄H₈O	72.1		592.0	141.750		1.28560
	2-甲基丙烯醛2-Methyl-2-propenal			78-85-3		C₄H₆O	70.1		579.6	139.235		1.05629
酸类Acids	2-甲基戊酸2-Methyl-pentanoic acid			97-61-0		C₆H₁₂O₂	116.2		956.9	293.057		1.25589
	丙酸Propanoic acid		79-09-4			C₃H₆O₂	74.1		735.9	179.018		1.10545
	异戊酸3-Methylbutanoic acid		503-74-2			C₅H₁₀O₂	102.1		850.2	226.431		1.51331
	丁酸Butanoic acid		107-92-6			C₄H₈O₂	88.1		790.4	198.949		1.40465
酮类Ketones	2-己酮2-Hexanone		591-78-6			C₆H₁₂O	100.2		775.3	193.758		1.18844
	3-辛酮3-Octanone		106-68-3			C₈H₁₆O	128.2		992.9	321.872		1.30203
	1-辛烯-3-酮1-octen-3-one		4312-99-6			C₈H₁₄O	126.2		981.1	312.219		1.27109
	环己酮Cyclohexanone		108-94-1			C₆H₁₀O	98.1		889.8	246.682		1.14241
	2-戊酮2-Pentanone		107-87-9			C₅H₁₀O	86.1		674.0	159.624		1.11070
	3-戊酮3-Pentanone		96-22-0			C₅H₁₀O	86.1		690.9	163.766		1.34928
	1-戊烯-3-酮1-Penten-3-one		1629-58-9			C₅H₈O	84.1		682.0	161.480		1.08078
	过氧化乙酰丙酮Acetoxyacetone		592-20-1			C₅H₈O₃	116.1		486.7	121.695		1.17657
烯烃类Alkenes	β-蒎烯（-）-β-Pinene		18172-67-3			C₁₀H₁₆	136.2		962.5	297.486		1.21913
酯类Esters	甲酸异戊酯Isopentyl formate		110-45-2			C₆H₁₂O₂	116.2		782.8	196.710		1.26577
	异丁酸乙酯Ethyl 2-methylpropanoate		97-62-1			C₆H₁₂O₂	116.2		755.3	186.152		1.19126
	丙烯酸乙酯Ethyl acrylate		140-88-5			C₅H₈O₂	100.1		698.1	165.948		1.42123
	甲酸丁酯Butyl formate		592-84-7			C₅H₁₀O₂	102.1		710.5	170.106		1.19209
	乙酸叶醇酯（Z）-3-hexenyl acetate		3681-71-8			C₈H₁₄O₂	142.2		1 013.1	342.702		1.32678
	巴豆酸乙酯Ethyl trans-2-butenoate		623-70-1			C₆H₁₀O₂	114.1		865.7	234.156		1.57582
	乙酸丁酯1-Butyl acetate		123-86-4			C₆H₁₂O₂	116.2		806.6	206.068		1.23544
	丁酸乙酯Ethyl butanoate		105-54-4			C₆H₁₂O₂	116.2		794.3	200.669		1.55681
	乙酸乙酯Acetic acid ethyl ester		141-78-6			C₄H₈O₂	88.1		602.6	143.930		1.09457
	乙酸甲酯Methyl acetate		79-20-9			C₃H₆O₂	74.1		555.5	134.447		1.19033
	乙酸己酯Hexyl acetate		142-92-7			C₈H₁₆O₂	144.2		1 008.4	337.531		1.40827
其他类Others	3-乙基-2-甲基吡嗪 2-Ethyl-3-methylpyrazine		15707-23-0			C₇H₁₀N₂	122.2		992.1	321.076		1.17599
	2,6-二甲基吡啶 2,6-Dimethylpyridine		108-48-5			C₇H₉N	107.2		887.2	245.193		1.46106
	2,5-二甲基呋喃2,5-Dimethylfuran		625-86-5			C₆H₈O	96.1		696.5	165.394		1.36108
	2-乙基呋喃2-Ethylfuran		3208-16-0			C₆H₈O	96.1		719.5	173.128		1.04219
	二丙基二硫Dipropyl disulfide		629-19-6			C₆H₁₄S₂	150.3		1 109.3	466.665		1.47526
类别 Type		化合物 Volatile compound			不同采摘期果皮挥发性成分峰面积 The peak area of the peel in different picking stages
类别 Type		化合物 Volatile compound			140 DAF			145 DAF			150 DAF
醇类Alcohols		3-庚醇3-Heptanol			289.67 ± 16.87			276.67 ± 13.94			265.76 ± 28.20
		顺-2-戊烯醇（Z）-2-Penten1ol			363.47 ± 23.72			278.65 ± 61.72			210.19 ± 34.51
		1-戊烯-3-醇Pent-1-en-3-ol			156.45 ± 1.86			148.64 ± 10.27			152.94 ± 2.90
		乙二醇二甲醚1，2-Dimethoxyethane			164.57 ± 21.30			183.53 ± 14.50			126.94 ± 17.74
		乙二醇丁醚2-Butoxyethanol			355.27 ± 10.17			368.37 ± 8.61			380.42 ± 21.07
		2-己醇2-Hexanol			ND			ND			ND
		4-己烯-1-醇4-Hexen-1-ol			131.04 ± 2.95			140.04 ± 17.23			129.54 ± 12.42
		正己醇1-Hexanol			46.05 ± 7.29			16.59 ± 1.85			14.24 ± 0.52
		反式-2-己烯-1-醇（E）-2-Hexen-1-ol			3 134.4 ± 10.62			3 111.35 ± 62.76			3 139.13 ± 49.57
醛类Aldehydes		2-甲基丁醛2-Methylbutyraldehyde			655.86 ± 33.58			552.26 ± 49.44			707.19 ± 13.05
		2-己烯醛2-Hexenal			18 125.60 ± 261.32			18 023.16 ± 333.01			17 921.4 ± 291.69
		反式-2-庚醛Trans-2-Heptenal			ND			ND			ND
		庚醛Heptanal			ND			ND			ND
		3-甲基-2-丁烯醛3-Methyl-2-butenal			ND			ND			ND
		正戊醛n-Pentanal			ND			ND			ND
		异戊醛3-Methyl butanal			ND			ND			ND
		（E,E）-2,4-己二烯醛（E,E）-2, 4-Hexadienal			236.13 ± 27.84			294.79 ± 71.87			272.48 ± 62.90
		反式-2-己烯醛（E）-2-Hexenal			522.73 ± 8.00			528.63 ± 23.47			542.06 ± 8.89
		反式-2-戊烯醛Trans-2-Pentenal			652.00 ± 11.27			656.85 ± 26.46			664.45 ± 13.58
		正丁醛Butanal			216.46 ± 4.02			163.57 ± 77.47			123.34 ± 21.30
		2-甲基丙烯醛2-Methyl-2-propenal			769.30 ± 66.34			700.40 ± 114.92			665.76 ± 30.30
酸类Acids		2-甲基戊酸2-Methyl-pentanoic acid			299.23 ± 8.83			288.85 ± 17.75			308.37 ± 30.19
		丙酸Propanoic acid			591.25 ± 13.66			603.87 ± 31.17			654.38 ± 3.58
		异戊酸3-Methylbutanoic acid			ND			ND			ND
		丁酸Butanoic acid			180.48 ± 4.54			165.61 ± 20.13			178.02 ± 5.67
酮类Ketones		2-己酮2-Hexanone			114.54 ± 4.74			113.60 ± 5.14			115.49 ± 2.27
		3-辛酮3-Octanone			ND			ND			ND
		1-辛烯-3-酮1-octen-3-one			ND			ND			ND
		环己酮Cyclohexanone			ND			ND			ND
		2-戊酮2-Pentanone			ND			ND			ND
		3-戊酮3-Pentanone			ND			ND			ND
		1-戊烯-3-酮1-Penten-3-one			188.86 ± 9.75			217.16 ± 2.15			301.87 ± 40.18
		过氧化乙酰丙酮Acetoxyacetone			691.52 ± 183.40			621.57 ± 54.21			549.11 ± 58.27
烯烃类Alkenes		β-蒎烯（-）-β-Pinene			94.88 ± 11.33			95.42 ± 18.69			91.44 ± 18.73
酯类Esters		甲酸异戊酯Isopentyl formate			146.47 ± 11.50			141.61 ± 9.70			148.83 ± 13.88
		异丁酸乙酯Ethyl 2-methylpropanoate			57.30 ± 2.81			58.42 ± 4.78			75.17 ± 5.33
		丙烯酸乙酯Ethyl acrylate			169.31 ± 9.19			195.61 ± 60.58			147.39 ± 9.43
		甲酸丁酯Butyl formate			1 545.28 ± 28.38			1 488.52 ± 191.94			1 786.14 ± 27.41
		乙酸叶醇酯（Z）-3-hexenyl acetate			ND			ND			ND
		巴豆酸乙酯Ethyl trans-2-butenoate			ND			ND			ND
		乙酸丁酯1-Butyl acetate			101.25 ± 4.74			63.72 ± 15.09			48.33 ± 3.58
		丁酸乙酯Ethyl butanoate			11 136.61 ± 349.64			11 024.93 ± 7.27			11 559.72 ± 231.53
		乙酸乙酯Acetic acid ethyl ester			1 279.46 ± 77.85			1 183.75 ± 379.92			1 107.19 ± 121.36
		乙酸甲酯Methyl acetate			248.17 ± 45.90			334.15 ± 65.70			176.14 ± 31.28
		乙酸己酯Hexyl acetate			180.77 ± 2.37			167.34 ± 18.10			174.45 ± 26.67
其他类Others		3-乙基-2-甲基吡嗪 2-Ethyl-3-methylpyrazine			291.71 ± 18.91			338.83 ± 17.25			292.43 ± 13.36
		2,6-二甲基吡啶2,6-Dimethylpyridine			104.68 ± 4.39			104.53 ± 10.99			106.77 ± 4.88
		2,5-二甲基呋喃2,5-Dimethylfuran			245.24 ± 2.51			230.30 ± 5.57			212.60 ± 10.63
		2-乙基呋喃2-Ethylfuran			ND			ND			ND
		二丙基二硫Dipropyl disulfide			777.05 ± 24.31			701.73 ± 25.55			394.89 ± 30.94
醇类Alcohols		3-庚醇3-Heptanol			ND			ND			ND
		顺-2-戊烯醇（Z）-2-Penten1ol			ND			ND			ND
		1-戊烯-3-醇Pent-1-en-3-ol			ND			ND			ND
		乙二醇二甲醚1，2-Dimethoxyethane			ND			ND			ND
		乙二醇丁醚2-Butoxyethanol			ND			ND			ND
		2-己醇2-Hexanol			2 511.61 ± 35.35			2 473.53 ± 67.51			2 306.54 ± 20.15
		4-己烯-1-醇4-Hexen-1-ol			83.37 ± 7.10			73.30 ± 5.49			80.03 ± 9.70
		正己醇1-Hexanol			214.77 ± 26.19			137.30 ±4 0.40			289.48 ± 92.09
		反式-2-己烯-1-醇（E）-2-Hexen-1-ol			2 691.55±128.98			2 582.66 ± 164.21			2 287.91 ± 226.15
醛类Aldehydes		2-甲基丁醛2-Methylbutyraldehyde			ND			ND			ND
		2-己烯醛2-Hexenal			ND			ND			ND
		反式-2-庚醛Trans-2-Heptenal			567.49 ± 36.42			535.37 ± 62.35			427.71 ± 67.28
		庚醛Heptanal			443.87 ± 36.92			382.24 ± 39.11			326.16 ± 40.41
		3-甲基-2-丁烯醛3-Methyl-2-butenal			119.27 ± 8.58			106.04 ± 3.00			114.69 ± 3.21
		正戊醛n-Pentanal			4 069.83 ± 81.83			4 009.21 ± 97.32			4 024.03 ± 70.64
		异戊醛3-Methyl butanal			289.50 ± 9.99			305.75 ± 19.82			277.66 ± 16.75
		（E,E）-2,4-己二烯醛（E,E）-2, 4-Hexadienal			41.38 ± 9.21			29.37 ± 6.95			29.34 ± 6.25
		反式-2-己烯醛（E）-2-Hexenal			861.86 ± 41.22			915.02 ± 27.66			974.39 ± 35.27
		反式-2-戊烯醛Trans-2-Pentenal			84.87 ± 8.51			72.72 ± 5.85			61.41 ± 6.13
		正丁醛Butanal			216.97 ± 22.39			222.41 ± 24.33			91.44 ± 23.56
		2-甲基丙烯醛2-Methyl-2-propenal			644.94 ± 18.75			541.88 ± 19.31			582.53 ± 16.63
酸类Acids		2-甲基戊酸2-Methyl-pentanoic acid			ND			ND			ND
		丙酸Propanoic acid			ND			ND			ND
		异戊酸3-Methylbutanoic acid			10 121.16 ± 86.88			8 822.95 ± 494.39			8 410.2 2± 392.84
		丁酸Butanoic acid			281.51 ± 8.79			269.43 ± 4.79			293.55 ± 2.41
酮类Ketones		2-己酮2-Hexanone			ND			ND			ND
		3-辛酮3-Octanone			71.55 ± 13.08			88.70 ± 16.07			102.35 ± 26.66
		1-辛烯-3-酮1-octen-3-one			234.81 ± 19.37			204.79 ± 30.31			129.73 ± 15.66
		环己酮Cyclohexanone			196.55 ± 13.13			175.53 ± 11.06			187.70 ± 6.14
		2-戊酮2-Pentanone			26.06 ± 3.14			26.98 ± 0.41			29.75 ± 1.38
		3-戊酮3-Pentanone			1 145.40 ± 59.47			1 058.28 ± 37.08			1 006.45 ± 51.49
		1-戊烯-3-酮1-Penten-3-one			261.60 ± 24.70			218.43 ± 14.40			193.89 ± 18.55
		过氧化乙酰丙酮Acetoxyacetone			570.85 ± 56.99			776.44 ± 70.76			458.48 ± 69.04
烯烃类Alkenes		β-蒎烯（-）-β-Pinene			74.42 ± 11.89			59.63 ± 11.52			58.90 ± 15.99
酯类Esters		甲酸异戊酯Isopentyl formate			ND			ND			ND
		异丁酸乙酯Ethyl 2-methylpropanoate			ND			ND			ND
		丙烯酸乙酯Ethyl acrylate			ND			ND			ND
		甲酸丁酯Butyl formate			ND			ND			ND
		乙酸叶醇酯（Z）-3-hexenyl acetate			62.65 ± 11.19			40.13 ± 7.46			26.89 ± 4.30
		巴豆酸乙酯Ethyl trans-2-butenoate			266.37 ± 70.37			336.66 ± 76.75			512.39 ± 51.63
		乙酸丁酯1-Butyl acetate			138.45 ± 9.40			121.19 ± 45.07			89.45 ± 13.99
		丁酸乙酯Ethyl butanoate			10 002.77 ± 84.56			9 549.11 ± 213.41			8 787.71 ± 251.88
		乙酸乙酯Acetic acid ethyl ester			1 240.37 ± 100.59			1 312.19 ± 137.25			845.61 ± 132.94
		乙酸甲酯Methyl acetate			349.65±149.14			456.5 ± 110.82			233.5 ± 52.94
		乙酸己酯Hexyl acetate			473.21 ± 80.62			326.13 ± 45.95			251.76 ± 37.56
其他类Others		3-乙基-2-甲基吡嗪 2-Ethyl-3-methylpyrazine			ND			ND			ND
		2,6-二甲基吡啶2,6-Dimethylpyridine			ND			ND			ND
		2,5-二甲基呋喃2,5-Dimethylfuran			ND			ND			ND
		2-乙基呋喃2-Ethylfuran			473.55 ± 22.12			403.84 ± 2.40			451.73 ± 39.80
		二丙基二硫Dipropyl disulfide			555.57 ± 75.44			330.14 ± 19.94			265.53 ± 7.71

类别 Type	化合物 Volatile compound			CAS号 Chemical Abstract Service		分子式 Molecular formula	相对分子质量 MW		保留指数 RI	保留时间/s RT		相对迁移时间 DT
醇类Alcohols	3-庚醇3-Heptanol			589-82-2		C₇H₁₆O	116.2		899.3	252.383		1.33783
	顺-2-戊烯醇（Z）-2-Penten1ol			1576-95-0		C₅H₁₀O	86.1		762.1	188.713		1.44506
	1-戊烯-3-醇Pent-1-en-3-ol			616-25-1		C₅H₁₀O	86.1		670.6	158.603		1.34867
	乙二醇二甲醚1，2-Dimethoxyethane			110-71-4		C₄H₁₀O₂	90.1		651.7	154.307		1.30380
	乙二醇丁醚2-Butoxyethanol			111-76-2		C₆H₁₄O₂	118.2		906.1	256.891		1.18231
	2-己醇2-Hexanol			626-93-7		C₆H₁₄O	102.2		816.3	210.419		1.26772
	4-己烯-1-醇4-Hexen-1-ol			6126-50-7		C₆H₁₂O	100.2		886.2	244.761		1.46307
	正己醇1-Hexanol			111-27-3		C₆H₁₄O	102.2		878.1	240.506		1.32130
	反式-2-己烯-1-醇（E）-2-Hexen-1-ol			928-95-0		C₆H₁₂O	100.2		873.4	238.081		1.18006
醛类Aldehydes	2-甲基丁醛2-Methylbutyraldehyde			96-17-3		C₅H₁₀O	86.1		661.5	156.524		1.16917
	2-己烯醛2-Hexenal			505-57-7		C₆H₁₀O	98.1		858.6	230.792		1.51165
	反式-2-庚醛Trans-2-Heptenal			18829-55-5		C₇H₁₂O	112.2		960.5	295.962		1.25501
	庚醛Heptanal			111-71-7		C₇H₁₄O	114.2		899.0	252.372		1.34091
	3-甲基-2-丁烯醛3-Methyl-2-butenal			107-86-8		C₅H₈O	84.1		775.5	193.022		1.11013
	正戊醛n-Pentanal			110-62-3		C₅H₁₀O	86.1		700.5	166.832		1.19381
	异戊醛3-Methyl butanal			590-86-3		C₅H₁₀O	86.1		656.4	155.592		1.18117
	（E,E）-2,4-己二烯醛（E,E）-2,4-Hexadienal			142-83-6		C₆H₈O	96.1		911.1	260.399		1.12014
	反式-2-己烯醛（E）-2-Hexenal			6728-26-3		C₆H₁₀O	98.1		832.5	217.925		1.18148
	反式-2-戊烯醛Trans-2-Pentenal			1576-87-0		C₅H₈O	84.1		749.9	183.655		1.10252
	正丁醛Butanal			123-72-8		C₄H₈O	72.1		592.0	141.750		1.28560
	2-甲基丙烯醛2-Methyl-2-propenal			78-85-3		C₄H₆O	70.1		579.6	139.235		1.05629
酸类Acids	2-甲基戊酸2-Methyl-pentanoic acid			97-61-0		C₆H₁₂O₂	116.2		956.9	293.057		1.25589
	丙酸Propanoic acid		79-09-4			C₃H₆O₂	74.1		735.9	179.018		1.10545
	异戊酸3-Methylbutanoic acid		503-74-2			C₅H₁₀O₂	102.1		850.2	226.431		1.51331
	丁酸Butanoic acid		107-92-6			C₄H₈O₂	88.1		790.4	198.949		1.40465
酮类Ketones	2-己酮2-Hexanone		591-78-6			C₆H₁₂O	100.2		775.3	193.758		1.18844
	3-辛酮3-Octanone		106-68-3			C₈H₁₆O	128.2		992.9	321.872		1.30203
	1-辛烯-3-酮1-octen-3-one		4312-99-6			C₈H₁₄O	126.2		981.1	312.219		1.27109
	环己酮Cyclohexanone		108-94-1			C₆H₁₀O	98.1		889.8	246.682		1.14241
	2-戊酮2-Pentanone		107-87-9			C₅H₁₀O	86.1		674.0	159.624		1.11070
	3-戊酮3-Pentanone		96-22-0			C₅H₁₀O	86.1		690.9	163.766		1.34928
	1-戊烯-3-酮1-Penten-3-one		1629-58-9			C₅H₈O	84.1		682.0	161.480		1.08078
	过氧化乙酰丙酮Acetoxyacetone		592-20-1			C₅H₈O₃	116.1		486.7	121.695		1.17657
烯烃类Alkenes	β-蒎烯（-）-β-Pinene		18172-67-3			C₁₀H₁₆	136.2		962.5	297.486		1.21913
酯类Esters	甲酸异戊酯Isopentyl formate		110-45-2			C₆H₁₂O₂	116.2		782.8	196.710		1.26577
	异丁酸乙酯Ethyl 2-methylpropanoate		97-62-1			C₆H₁₂O₂	116.2		755.3	186.152		1.19126
	丙烯酸乙酯Ethyl acrylate		140-88-5			C₅H₈O₂	100.1		698.1	165.948		1.42123
	甲酸丁酯Butyl formate		592-84-7			C₅H₁₀O₂	102.1		710.5	170.106		1.19209
	乙酸叶醇酯（Z）-3-hexenyl acetate		3681-71-8			C₈H₁₄O₂	142.2		1 013.1	342.702		1.32678
	巴豆酸乙酯Ethyl trans-2-butenoate		623-70-1			C₆H₁₀O₂	114.1		865.7	234.156		1.57582
	乙酸丁酯1-Butyl acetate		123-86-4			C₆H₁₂O₂	116.2		806.6	206.068		1.23544
	丁酸乙酯Ethyl butanoate		105-54-4			C₆H₁₂O₂	116.2		794.3	200.669		1.55681
	乙酸乙酯Acetic acid ethyl ester		141-78-6			C₄H₈O₂	88.1		602.6	143.930		1.09457
	乙酸甲酯Methyl acetate		79-20-9			C₃H₆O₂	74.1		555.5	134.447		1.19033
	乙酸己酯Hexyl acetate		142-92-7			C₈H₁₆O₂	144.2		1 008.4	337.531		1.40827
其他类Others	3-乙基-2-甲基吡嗪 2-Ethyl-3-methylpyrazine		15707-23-0			C₇H₁₀N₂	122.2		992.1	321.076		1.17599
	2,6-二甲基吡啶 2,6-Dimethylpyridine		108-48-5			C₇H₉N	107.2		887.2	245.193		1.46106
	2,5-二甲基呋喃2,5-Dimethylfuran		625-86-5			C₆H₈O	96.1		696.5	165.394		1.36108
	2-乙基呋喃2-Ethylfuran		3208-16-0			C₆H₈O	96.1		719.5	173.128		1.04219
	二丙基二硫Dipropyl disulfide		629-19-6			C₆H₁₄S₂	150.3		1 109.3	466.665		1.47526
类别 Type		化合物 Volatile compound			不同采摘期果皮挥发性成分峰面积 The peak area of the peel in different picking stages
类别 Type		化合物 Volatile compound			140 DAF			145 DAF			150 DAF
醇类Alcohols		3-庚醇3-Heptanol			289.67 ± 16.87			276.67 ± 13.94			265.76 ± 28.20
		顺-2-戊烯醇（Z）-2-Penten1ol			363.47 ± 23.72			278.65 ± 61.72			210.19 ± 34.51
		1-戊烯-3-醇Pent-1-en-3-ol			156.45 ± 1.86			148.64 ± 10.27			152.94 ± 2.90
		乙二醇二甲醚1，2-Dimethoxyethane			164.57 ± 21.30			183.53 ± 14.50			126.94 ± 17.74
		乙二醇丁醚2-Butoxyethanol			355.27 ± 10.17			368.37 ± 8.61			380.42 ± 21.07
		2-己醇2-Hexanol			ND			ND			ND
		4-己烯-1-醇4-Hexen-1-ol			131.04 ± 2.95			140.04 ± 17.23			129.54 ± 12.42
		正己醇1-Hexanol			46.05 ± 7.29			16.59 ± 1.85			14.24 ± 0.52
		反式-2-己烯-1-醇（E）-2-Hexen-1-ol			3 134.4 ± 10.62			3 111.35 ± 62.76			3 139.13 ± 49.57
醛类Aldehydes		2-甲基丁醛2-Methylbutyraldehyde			655.86 ± 33.58			552.26 ± 49.44			707.19 ± 13.05
		2-己烯醛2-Hexenal			18 125.60 ± 261.32			18 023.16 ± 333.01			17 921.4 ± 291.69
		反式-2-庚醛Trans-2-Heptenal			ND			ND			ND
		庚醛Heptanal			ND			ND			ND
		3-甲基-2-丁烯醛3-Methyl-2-butenal			ND			ND			ND
		正戊醛n-Pentanal			ND			ND			ND
		异戊醛3-Methyl butanal			ND			ND			ND
		（E,E）-2,4-己二烯醛（E,E）-2, 4-Hexadienal			236.13 ± 27.84			294.79 ± 71.87			272.48 ± 62.90
		反式-2-己烯醛（E）-2-Hexenal			522.73 ± 8.00			528.63 ± 23.47			542.06 ± 8.89
		反式-2-戊烯醛Trans-2-Pentenal			652.00 ± 11.27			656.85 ± 26.46			664.45 ± 13.58
		正丁醛Butanal			216.46 ± 4.02			163.57 ± 77.47			123.34 ± 21.30
		2-甲基丙烯醛2-Methyl-2-propenal			769.30 ± 66.34			700.40 ± 114.92			665.76 ± 30.30
酸类Acids		2-甲基戊酸2-Methyl-pentanoic acid			299.23 ± 8.83			288.85 ± 17.75			308.37 ± 30.19
		丙酸Propanoic acid			591.25 ± 13.66			603.87 ± 31.17			654.38 ± 3.58
		异戊酸3-Methylbutanoic acid			ND			ND			ND
		丁酸Butanoic acid			180.48 ± 4.54			165.61 ± 20.13			178.02 ± 5.67
酮类Ketones		2-己酮2-Hexanone			114.54 ± 4.74			113.60 ± 5.14			115.49 ± 2.27
		3-辛酮3-Octanone			ND			ND			ND
		1-辛烯-3-酮1-octen-3-one			ND			ND			ND
		环己酮Cyclohexanone			ND			ND			ND
		2-戊酮2-Pentanone			ND			ND			ND
		3-戊酮3-Pentanone			ND			ND			ND
		1-戊烯-3-酮1-Penten-3-one			188.86 ± 9.75			217.16 ± 2.15			301.87 ± 40.18
		过氧化乙酰丙酮Acetoxyacetone			691.52 ± 183.40			621.57 ± 54.21			549.11 ± 58.27
烯烃类Alkenes		β-蒎烯（-）-β-Pinene			94.88 ± 11.33			95.42 ± 18.69			91.44 ± 18.73
酯类Esters		甲酸异戊酯Isopentyl formate			146.47 ± 11.50			141.61 ± 9.70			148.83 ± 13.88
		异丁酸乙酯Ethyl 2-methylpropanoate			57.30 ± 2.81			58.42 ± 4.78			75.17 ± 5.33
		丙烯酸乙酯Ethyl acrylate			169.31 ± 9.19			195.61 ± 60.58			147.39 ± 9.43
		甲酸丁酯Butyl formate			1 545.28 ± 28.38			1 488.52 ± 191.94			1 786.14 ± 27.41
		乙酸叶醇酯（Z）-3-hexenyl acetate			ND			ND			ND
		巴豆酸乙酯Ethyl trans-2-butenoate			ND			ND			ND
		乙酸丁酯1-Butyl acetate			101.25 ± 4.74			63.72 ± 15.09			48.33 ± 3.58
		丁酸乙酯Ethyl butanoate			11 136.61 ± 349.64			11 024.93 ± 7.27			11 559.72 ± 231.53
		乙酸乙酯Acetic acid ethyl ester			1 279.46 ± 77.85			1 183.75 ± 379.92			1 107.19 ± 121.36
		乙酸甲酯Methyl acetate			248.17 ± 45.90			334.15 ± 65.70			176.14 ± 31.28
		乙酸己酯Hexyl acetate			180.77 ± 2.37			167.34 ± 18.10			174.45 ± 26.67
其他类Others		3-乙基-2-甲基吡嗪 2-Ethyl-3-methylpyrazine			291.71 ± 18.91			338.83 ± 17.25			292.43 ± 13.36
		2,6-二甲基吡啶2,6-Dimethylpyridine			104.68 ± 4.39			104.53 ± 10.99			106.77 ± 4.88
		2,5-二甲基呋喃2,5-Dimethylfuran			245.24 ± 2.51			230.30 ± 5.57			212.60 ± 10.63
		2-乙基呋喃2-Ethylfuran			ND			ND			ND
		二丙基二硫Dipropyl disulfide			777.05 ± 24.31			701.73 ± 25.55			394.89 ± 30.94
醇类Alcohols		3-庚醇3-Heptanol			ND			ND			ND
		顺-2-戊烯醇（Z）-2-Penten1ol			ND			ND			ND
		1-戊烯-3-醇Pent-1-en-3-ol			ND			ND			ND
		乙二醇二甲醚1，2-Dimethoxyethane			ND			ND			ND
		乙二醇丁醚2-Butoxyethanol			ND			ND			ND
		2-己醇2-Hexanol			2 511.61 ± 35.35			2 473.53 ± 67.51			2 306.54 ± 20.15
		4-己烯-1-醇4-Hexen-1-ol			83.37 ± 7.10			73.30 ± 5.49			80.03 ± 9.70
		正己醇1-Hexanol			214.77 ± 26.19			137.30 ±4 0.40			289.48 ± 92.09
		反式-2-己烯-1-醇（E）-2-Hexen-1-ol			2 691.55±128.98			2 582.66 ± 164.21			2 287.91 ± 226.15
醛类Aldehydes		2-甲基丁醛2-Methylbutyraldehyde			ND			ND			ND
		2-己烯醛2-Hexenal			ND			ND			ND
		反式-2-庚醛Trans-2-Heptenal			567.49 ± 36.42			535.37 ± 62.35			427.71 ± 67.28
		庚醛Heptanal			443.87 ± 36.92			382.24 ± 39.11			326.16 ± 40.41
		3-甲基-2-丁烯醛3-Methyl-2-butenal			119.27 ± 8.58			106.04 ± 3.00			114.69 ± 3.21
		正戊醛n-Pentanal			4 069.83 ± 81.83			4 009.21 ± 97.32			4 024.03 ± 70.64
		异戊醛3-Methyl butanal			289.50 ± 9.99			305.75 ± 19.82			277.66 ± 16.75
		（E,E）-2,4-己二烯醛（E,E）-2, 4-Hexadienal			41.38 ± 9.21			29.37 ± 6.95			29.34 ± 6.25
		反式-2-己烯醛（E）-2-Hexenal			861.86 ± 41.22			915.02 ± 27.66			974.39 ± 35.27
		反式-2-戊烯醛Trans-2-Pentenal			84.87 ± 8.51			72.72 ± 5.85			61.41 ± 6.13
		正丁醛Butanal			216.97 ± 22.39			222.41 ± 24.33			91.44 ± 23.56
		2-甲基丙烯醛2-Methyl-2-propenal			644.94 ± 18.75			541.88 ± 19.31			582.53 ± 16.63
酸类Acids		2-甲基戊酸2-Methyl-pentanoic acid			ND			ND			ND
		丙酸Propanoic acid			ND			ND			ND
		异戊酸3-Methylbutanoic acid			10 121.16 ± 86.88			8 822.95 ± 494.39			8 410.2 2± 392.84
		丁酸Butanoic acid			281.51 ± 8.79			269.43 ± 4.79			293.55 ± 2.41
酮类Ketones		2-己酮2-Hexanone			ND			ND			ND
		3-辛酮3-Octanone			71.55 ± 13.08			88.70 ± 16.07			102.35 ± 26.66
		1-辛烯-3-酮1-octen-3-one			234.81 ± 19.37			204.79 ± 30.31			129.73 ± 15.66
		环己酮Cyclohexanone			196.55 ± 13.13			175.53 ± 11.06			187.70 ± 6.14
		2-戊酮2-Pentanone			26.06 ± 3.14			26.98 ± 0.41			29.75 ± 1.38
		3-戊酮3-Pentanone			1 145.40 ± 59.47			1 058.28 ± 37.08			1 006.45 ± 51.49
		1-戊烯-3-酮1-Penten-3-one			261.60 ± 24.70			218.43 ± 14.40			193.89 ± 18.55
		过氧化乙酰丙酮Acetoxyacetone			570.85 ± 56.99			776.44 ± 70.76			458.48 ± 69.04
烯烃类Alkenes		β-蒎烯（-）-β-Pinene			74.42 ± 11.89			59.63 ± 11.52			58.90 ± 15.99
酯类Esters		甲酸异戊酯Isopentyl formate			ND			ND			ND
		异丁酸乙酯Ethyl 2-methylpropanoate			ND			ND			ND
		丙烯酸乙酯Ethyl acrylate			ND			ND			ND
		甲酸丁酯Butyl formate			ND			ND			ND
		乙酸叶醇酯（Z）-3-hexenyl acetate			62.65 ± 11.19			40.13 ± 7.46			26.89 ± 4.30
		巴豆酸乙酯Ethyl trans-2-butenoate			266.37 ± 70.37			336.66 ± 76.75			512.39 ± 51.63
		乙酸丁酯1-Butyl acetate			138.45 ± 9.40			121.19 ± 45.07			89.45 ± 13.99
		丁酸乙酯Ethyl butanoate			10 002.77 ± 84.56			9 549.11 ± 213.41			8 787.71 ± 251.88
		乙酸乙酯Acetic acid ethyl ester			1 240.37 ± 100.59			1 312.19 ± 137.25			845.61 ± 132.94
		乙酸甲酯Methyl acetate			349.65±149.14			456.5 ± 110.82			233.5 ± 52.94
		乙酸己酯Hexyl acetate			473.21 ± 80.62			326.13 ± 45.95			251.76 ± 37.56
其他类Others		3-乙基-2-甲基吡嗪 2-Ethyl-3-methylpyrazine			ND			ND			ND
		2,6-二甲基吡啶2,6-Dimethylpyridine			ND			ND			ND
		2,5-二甲基呋喃2,5-Dimethylfuran			ND			ND			ND
		2-乙基呋喃2-Ethylfuran			473.55 ± 22.12			403.84 ± 2.40			451.73 ± 39.80
		二丙基二硫Dipropyl disulfide			555.57 ± 75.44			330.14 ± 19.94			265.53 ± 7.71

类别 Type	化合物 Volatile compound	CAS号 Chemical Abstract Service			保留时间 RT		保留指数 RI
醇类Alcohols	正己醇1-Hexanol	111-27-3			14.7576		869
	1-壬醇1-Nonanol	143-08-8			27.0086		1 170
	2-甲基环戊醇Cyclopentanol,2-methyl-	24070-77-7			12.0792		798
	反-2-甲基环戊醇Cyclopentanol,2-methyl-,trans-	25144-04-1			12.0624		798
	环丁基甲醇Cyclobutanemethanol	4415-82-1			10.8612		767
	3-壬醇3-Nonanol	624-51-1			24.1480		1 095
	苏合香醇Benzenemethanol,alpha-methyl-	98-85-1			24.9862		1 118
醛类Aldehydes	十五醛Pentadecanal-	2765-11-9			35.3881		1614
	（E,E）-2,4-庚二烯醛（E,E）-2,4-Heptadienal	4313-03-5			20.7817		1 012
	苯甲醛Benzaldehyde	100-52-7			18.8081		964
	癸醛Decanal	112-31-2			28.3624		1 206
	苯乙醛Benzeneacetaldehyde	122-78-1			22.2278		1 048
	正辛醛Octanal	124-13-0			20.4453		1 003
	壬醛Nonanal	124-19-6			24.5123		1 105
	反式-2-壬烯醛（E）-2-Nonenal	18829-56-6			26.6686		1 161
	环己烷基甲醛Cyclohexanecarboxaldehyde	2043-61-0			18.5070		958
	反-2-辛烯醛（E）-2-Octenal	2548-87-0			22.7015		1 059
	3-乙基苯甲醛Benzaldehyde,3-ethyl-	34246-54-3			26.978		1 170
	反式-2-癸烯醛（E）-2-Decenal	3913-81-3			30.4131		1 264
	β-环柠檬醛β-Cyclocitral	432-25-7			29.1906		1 230
	4-乙基苯甲醛Benzaldehyde,4-ethyl-	4748-78-1			27.5739		1 185
	2-己烯醛2-Hexenal	505-57-7			14.1715		853
	（E,E）-2,4-壬二烯醛（E,E）-2,4-Nonadienal	5910-87-2			28.7231		1 216
	间苯二甲醛Isophthalaldehyde	626-19-7			29.6339		1 242
	2-甲基丁醛Butanal,2-methyl-	96-17-3			7.4433		668
酮类Ketones	甲基庚烯酮5-Hepten-2-one,6-methyl-	110-93-0			19.7912		988
	仲辛酮2-Octanone	111-13-7			19.9427		991
	甲基壬基甲酮2-Undecanone	112-12-9			31.4933		1 294
	4-甲基苯戊酮1-Pentanone，1-（4-methylphenyl）-	1671-77-8			27.3378		1 160
	橙化基丙酮Nerylacetone	3879-26-3			36.8451		1 456
	2-壬酮2-Nonanone	821-55-6			24.0160		1 092
	对乙基苯乙酮Ethanone,1-（4-ethylphenyl）-	937-30-4			31.3514		1 270
	苯乙酮Acetophenone	98-86-2			23.1772		1 071
烯烃类Alkenes	8-十七烷烯8-Heptadecene	16369-12-3			43.4658		1 678
	苯乙烯Styrene	100-42-5			15.8533		893
	花侧柏烯（+）-Cuparene	16982-00-6			38.0307		1 492
	α-法呢烯α-Farnesene	502-61-4			38.5762		1 511
酯类Esters	乙酸苯乙酯Acetic acid,2-phenylethyl ester	103-45-7			30.3184		1 261
	水杨酸甲酯Methyl salicylate	119-36-8			28.1945		1 202
	乙酸丁酯Acetic acid,butyl ester	123-86-4			12.4971		812
	乙酸己酯Acetic acid,hexyl ester	142-92-7			20.8096		1 013
	苯甲酸丙酯n-Propyl benzoate	2315-68-6			34.3940		1 380
	邻苯二甲酸二异丁酯Diisobutyl phthalate	84-69-5			48.7466		1 873
	邻苯二甲酸二丁酯Dibutyl phthalate	84-74-2			51.2549		1 966
	苯甲酸乙酯Benzoic acid,ethyl ester	93-89-0			27.1974		1 175
呋喃类Furans	2-乙基呋喃Furan,2-ethyl-	3208-16-0			8.7041		705
	2-正戊基呋喃Furan,2-pentyl-	3777-69-3			19.9995		993
	2-正丙基呋喃Furan2-propyl-	4229-91-8			20.1763		997
	2-甲基苯并呋喃Benzofuran，2-methyl-	4265-25-2			24.8807		1 114
	2-正丁基呋喃2-n-Butyl furan	4466-24-4			15.7786		893
其他类Others	左旋樟脑（-）-Camphor	464-48-2			26.4195		1 155
	醋酸Acetic acid	64-19-7			7.5842		674
	丁香酚Eugenol	97-53-0			33.8680		1 364
类别 Type	化合物 Volatile compound		不同采摘期果皮挥发性成分含量/（ng · g^-1） Volatile compounds content of peel at different picking stages
类别 Type	化合物 Volatile compound		140 DAF	145 DAF		150 DAF
醇类Alcohols	正己醇1-Hexanol		ND	ND		15.01 ± 4.88
	1-壬醇1-Nonanol		9.10 ± 2.24	11.67 ± 1.28		ND
	2-甲基环戊醇Cyclopentanol，2-methyl-		1323.05 ± 1037.26	ND		ND
	反-2-甲基环戊醇Cyclopentanol，2-methyl-,trans-		ND	ND		ND
	环丁基甲醇Cyclobutanemethanol		85.46 ± 84.95	ND		ND
	3-壬醇3-Nonanol		ND	ND		ND
	苏合香醇Benzenemethanol,.alpha.-methyl-		ND	2.04 ± 1.08		ND
醛类Aldehydes	十五醛Pentadecanal-		ND	4.16 ± 0.39		ND
	（E,E）-2,4-庚二烯醛（E,E）-2,4-Heptadienal		21.24 ± 2.61	29.02 ± 5.11		ND
	苯甲醛Benzaldehyde		411.77 ± 232.49	33.43 ± 4.91		ND
	癸醛Decanal		18.93 ± 9.87	18.81 ± 2.36		43.05 ± 21.31
	苯乙醛Benzeneacetaldehyde		37.38 ± 24.16	59.85 ± 6.38		45.06 ± 33.83
	正辛醛Octanal		24.42 ± 18.87	34.01 ± 8.33		38.69 ± 11.47
	壬醛Nonanal		219.35 ± 118.50	198.21 ± 34.61		138.33 ± 45.58
	反式-2-壬烯醛（E）-2-Nonenal		ND	ND		ND
	环己烷基甲醛Cyclohexanecarboxaldehyde		ND	ND		ND
	反-2-辛烯醛（E）-2-Octenal		ND	ND		ND
	3-乙基苯甲醛Benzaldehyde，3-ethyl-		ND	ND		40.11 ± 17.63
	反式-2-癸烯醛（E）-2-Decenal		41.22 ± 42.55	10.22 ± 0.47		24.54 ± 12.51
	β-环柠檬醛β-Cyclocitral		6.63 ± 2.60	5.59 ± 0.47		ND
	4-乙基苯甲醛Benzaldehyde，4-ethyl-		26.64 ± 14.63	15.76 ± 3.71		11.93 ± 3.54
	2-己烯醛2-Hexenal		4 474.10 ± 3388.29	6 185.75 ± 811.34		7 586.04 ± 2245.64
	（E,E）-2,4-壬二烯醛（E,E）-2,4-Nonadienal		ND	ND		ND
	间苯二甲醛Isophthalaldehyde		16.67 ± 4.39	19.74 ± 6.27		18.75 ± 12.17
	2-甲基丁醛Butanal，2-methyl-		ND	3.39 ± 0.41		ND
酮类Ketones	甲基庚烯酮5-Hepten-2-one，6-methyl-		23.12 ± 10.76	39.02 ± 5.44		29.10 ± 7.49
	仲辛酮2-Octanone		ND	5.01 ± 1.28		ND
	甲基壬基甲酮2-Undecanone		ND	3.05 ± 0.52		ND
	4-甲基苯戊酮1-Pentanone，1-（4-methylphenyl）-		3.84 ± 2.30	ND		8.02 ± 7.26
	橙化基丙酮Nerylacetone		ND	ND		ND
	2-壬酮2-Nonanone		ND	5.28 ± 0.98		ND
	对乙基苯乙酮Ethanone，1-（4-ethylphenyl）-		2 445.17 ± 1447.51	5.84 ± 1.74		ND
	苯乙酮Acetophenone		ND	7.91±0.78		ND
烯烃类Alkenes	8-十七烷烯8-Heptadecene		20.48 ± 13.65	52.04 ± 19.58		102.28 ± 12.11
	苯乙烯Styrene		ND	ND		19.61 ± 11.94
	花侧柏烯（+）-Cuparene		ND	3.48 ± 0.97		ND
	α-法呢烯α-Farnesene		354.57 ± 205.87	735.66 ± 289.00		ND
酯类Esters	乙酸苯乙酯Acetic acid，2-phenylethyl ester		ND	ND		328.95 ± 207.02
	水杨酸甲酯Methyl salicylate		7.58 ± 3.10	40.09 ± 33.08		ND
	乙酸丁酯Acetic acid，butyl ester		ND	ND		ND
	乙酸己酯Acetic acid，hexyl ester		9.62 ± 5.55	9.68 ± 4.90		6.75 ± 3.04
	苯甲酸丙酯n-Propyl benzoate		4.4 ± 0.98	ND		ND
	邻苯二甲酸二异丁酯Diisobutyl phthalate		ND	ND		ND
	邻苯二甲酸二丁酯Dibutyl phthalate		7.69 ± 2.85	4.70 ± 1.54		13.88 ± 5.04
	苯甲酸乙酯Benzoic acid，ethyl ester		7.18 ± 6.55	8.61 ± 6.37		8.72 ± 7.50
呋喃类Furans	2-乙基呋喃Furan，2-ethyl-		67.36 ± 34.74	69.59 ± 26.78		38.18 ± 17.89
	2-正戊基呋喃Furan,2-pentyl-		ND	ND		ND
	2-正丙基呋喃Furan2-propyl-		ND	ND		ND
	2-甲基苯并呋喃Benzofuran，2-methyl-		ND	ND		ND
	2-正丁基呋喃2-n-Butyl furan		ND	ND		ND
其他类Others	左旋樟脑（-）-Camphor		ND	ND		ND
	醋酸Acetic acid		13.95 ± 5.65	ND		68.22 ± 60.39
	丁香酚Eugenol		23.67 ± 19.23	5.05 ± 0.85		25.39 ± 21.01
醇类Alcohols	正己醇1-Hexanol		ND	ND		ND
	1-壬醇1-Nonanol		ND	ND		ND
	2-甲基环戊醇Cyclopentanol，2-methyl-		ND	ND		ND
	反-2-甲基环戊醇Cyclopentanol,2-methyl-,trans-	525.66 ± 259.45		1330.66 ± 591.93		1293.5 ± 354.11
	环丁基甲醇Cyclobutanemethanol	ND		ND		ND
	3-壬醇3-Nonanol	ND		3.84 ± 1.04		3.49 ± 0.70
	苏合香醇Benzenemethanol,.alpha.-methyl-	ND		ND		ND
醛类Aldehydes	十五醛Pentadecanal-	ND		ND		ND
	（E,E）-2,4-庚二烯醛（E,E）-2,4-Heptadienal	ND		ND		ND
	苯甲醛Benzaldehyde	ND		23.34 ± 8.64		21.37 ± 9.94
	癸醛Decanal	59.66 ± 7.88		42.53 ± 20.47		24.87 ± 4.44
	苯乙醛Benzeneacetaldehyde	ND		ND		22.08 ± 24.02
	正辛醛Octanal	64.38 ± 15.52		46.65 ± 14.14		29.63 ± 4.09
	壬醛Nonanal	224.50 ± 26.82		173.53 ± 36.35		124.93 ± 51.32
	反式-2-壬烯醛（E）-2-Nonenal	18.75 ± 2.60		ND		ND
	环己烷基甲醛Cyclohexanecarboxaldehyde	38.90 ± 10.35		ND		ND
	反-2-辛烯醛（E）-2-Octenal	34.42 ± 5.87		34.31 ± 21.16		19.37 ± 6.38
	3-乙基苯甲醛Benzaldehyde,3-ethyl-	11.58 ± 0.62		18.89 ± 11.03		16.88 ± 11.32
	反式-2-癸烯醛（E）-2-Decenal	19.14 ± 3.26		14.56 ± 5.74		10.17 ± 1.71
	β-环柠檬醛β-Cyclocitral	2.76 ± 0.37		3.11±1.66		ND
	4-乙基苯甲醛Benzaldehyde,4-ethyl-	3.87±0.10		6.68 ± 3.88		5.71 ± 4.18
	2-己烯醛2-Hexenal	704.82 ± 98.60		2 678.31 ± 2077.36		2 536.98 ± 1955.31
	（E,E）-2,4-壬二烯醛（E,E）-2,4-Nonadienal	7.86 ± 0.70		ND		ND
	间苯二甲醛Isophthalaldehyde	7.11 ± 0.68		12.75 ± 8.99		10.94 ± 9.45
	2-甲基丁醛Butanal,2-methyl-	ND		ND		ND
酮类Ketones	甲基庚烯酮5-Hepten-2-one,6-methyl-	ND		22.36 ± 13.68		ND
	仲辛酮2-Octanone	1.87 ± 0.21		3.24 ± 2.14		ND
	甲基壬基甲酮2-Undecanone	ND		ND		ND
	4-甲基苯戊酮1-Pentanone,1-（4-methylphenyl）-	ND		2.58 ± 1.39		ND
	橙化基丙酮Nerylacetone	12.65 ± 0.85		ND		ND
	2-壬酮2-Nonanone	ND		3.12 ± 1.94		ND
	对乙基苯乙酮Ethanone,1-（4-ethylphenyl）-	1.77 ± 0.72		3.5 ± 1.27		2.73 ± 1.68
	苯乙酮Acetophenone	ND		5.87 ± 1.07		ND
烯烃类Alkenes	8-十七烷烯8-Heptadecene	ND		ND		ND
	苯乙烯Styrene	5.85 ± 4.31		ND		ND
	花侧柏烯（+）-Cuparene	ND		ND		ND
	α-法呢烯α-Farnesene	ND		ND		362.63 ± 305.93
酯类Esters	乙酸苯乙酯Acetic acid,2-phenylethyl ester	58.16 ± 9.38		54.73 ± 48.26		370.43 ± 284.23
	水杨酸甲酯Methyl salicylate	ND		14.05 ± 9.77		ND
	乙酸丁酯Acetic acid,butyl ester	2.05 ± 0.11		ND		ND
	乙酸己酯Acetic acid,hexyl ester	15.42 ± 3.54		15.62 ± 1.19		9.66 ± 4.51
	苯甲酸丙酯n-Propyl benzoate	ND		ND		ND
	邻苯二甲酸二异丁酯Diisobutyl phthalate	9.33 ± 2.22		ND		ND
	邻苯二甲酸二丁酯Dibutyl phthalate	4.26 ± 0.91		7.01 ± 2.12		5.17 ± 1.39
	苯甲酸乙酯Benzoic acid，ethyl ester	0.80 ± 0.19		ND		5.99 ± 5.52
呋喃类Furans	2-乙基呋喃Furan,2-ethyl-	ND		33.77 ± 27.63		29.52 ± 27.90
	2-正戊基呋喃Furan,2-pentyl-	6.76 ± 2.76		ND		ND
	2-正丙基呋喃Furan2-propyl-	ND		4.06 ± 3.63		ND
	2-甲基苯并呋喃Benzofuran，2-methyl-	3.59 ± 0.65		ND		ND
	2-正丁基呋喃2-n-Butyl furan	1.79 ± 1.28		ND		ND
其他类Others	左旋樟脑（-）-Camphor	2.85 ± 0.37		ND		ND
	醋酸Acetic acid	ND		3.01 ± 0.77		7.05 ± 3.82
	丁香酚Eugenol	ND		ND		ND

The Fruit Quality Variation of‘Yuluxiang’Pear at Different Picking Stages and Storage Time

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检测方法 Detection method		化合物 Volatile compound				阈值/ （mg · kg^-1） Threshold				不同采摘期果皮 Peel with different picking stages
检测方法 Detection method		化合物 Volatile compound				阈值/ （mg · kg^-1） Threshold				140 DAF	145 DAF	150 DAF
HS-GC-IMS（ROAV）		2,6-二甲基吡啶2,6-Dimethylpyridine				0.003				1.71	1.27	0.33
		异丁酸乙酯Ethyl 2-methylpropanoate				0.00002				100.00	100.00	100.00
		丙烯酸乙酯Ethyl acrylate				0.0001				55.84	50.91	10.68
		正丁醛Butanal				0.002				4.40	2.79	0.22
		乙酸乙酯Acetic acid ethyl ester				0.005				1.66	1.47	0.30
		3-辛酮3-Octanone				0.0013				ND	ND	ND
		1-辛烯-3-酮1-Octen-3-one				0.000016				ND	ND	ND
		异戊醛3-Methyl butanal				0.0011				ND	ND	ND
HS-SPME-GC-MS（OAV）		乙酸苯乙酯Acetic acid，2-phenylethyl ester				0.0067				0	0	49.10
		癸醛Decanal				0.003				6.31	6.27	14.35
		苯乙醛Benzeneacet aldehyde				0.004				9.34	14.96	11.26
		正辛醛Octanal				0.0008				30.53	42.51	48.36
		壬醛Nonanal				0.01125				19.50	17.62	12.30
		反式-2-癸烯醛（E）-2-Decenal				0.017				2.42	0.60	1.44
		β-环柠檬醛β-Cyclocitral				0.003				2.21	1.86	0
		2-己烯醛2-Hexenal				0.03				149.14	206.19	252.87
		水杨酸甲酯Methyl salicylate					0.04		0.19		1.00	0
		丁香酚Eugenol					0.0025		9.47		2.02	10.15
		反式-2-壬烯醛（E）-2-Nonenal					0.0019		ND		ND	ND
		反-2-辛烯醛（E）-2-Octenal					0.003		ND		ND	ND
		（E,E）-2,4-壬二烯醛(E,E)-2,4-Nonadienal					0.0001		ND		ND	ND
		2-正戊基呋喃Furan,2-pentyl-					0.0058		ND		ND	ND
检测方法 Detection method	化合物 Volatile compound		不同采摘期果肉 Pulp with different picking stages					气味描述 Aroma description
检测方法 Detection method	化合物 Volatile compound		140 DAF	145 DAF	150 DAF			气味描述 Aroma description
HS-GC-IMS （ROAV）	2,6-二甲基吡啶 2,6-Dimethylpyridine		ND	ND	ND			香薄荷Savory
	异丁酸乙酯 Ethyl 2-methylpropanoate		ND	ND	ND			水果，甜味Fruity，sweet
	丙烯酸乙酯Ethyl acrylate		ND	ND	ND			/
	正丁醛Butanal		0.77	0.94	1.15			香蕉，青草，刺激性Banana，green，pungent
	乙酸乙酯Acetic acid ethyl ester		ND	ND	ND			芳香，白兰地，葡萄Aromatic，brandy，grape
	3-辛酮3-Octanone		0.21	0.72	6.12			黄油，香草，霉菌Butter，herb，mold
	1-辛烯-3-酮1-Octen-3-one		100.00	100.00	100.00			土壤，蘑菇Earth，mushroom
	异戊醛3-Methyl butanal		0.60	1.79	9.53			柑橘，柠檬，苹果Citrus，lemon，apple
HS-SPME- GC-MS（OAV）	乙酸苯乙酯Acetic acid， 2-phenylethyl ester		8.68	8.17	55.29			花，蜂蜜，玫瑰Flower，honey，rose
	癸醛Decanal		19.89	14.18	8.29			花香，橙皮Floral，orange，peel
	苯乙醛Benzeneacet aldehyde		0	0	5.52			浆果，天竺葵，蜂蜜，坚果Berry，geranium，honey，nut，pungent
	正辛醛Octanal		80.48	58.31	37.04			柑橘，脂肪，绿色Citrus，fat，green，oil，pungent
	壬醛Nonanal		19.96	15.43	11.10			脂肪，花香，绿色，柠檬Fat，floral，green，lemon
	反式-2-癸烯醛（E）-2-Decenal		1.13	0.86	0.60			脂肪，鱼，橙子Fat，fish，green，orange
	β-环柠檬醛β-Cyclocitral		0.92	1.04	0			柠檬，橙子Lemon，orange
	2-己烯醛2-Hexenal		23.49	89.28	84.57			甜杏仁Sweet almonds
	水杨酸甲酯Methyl salicylate		ND	ND	ND			杏仁，焦糖，薄荷Almond，caramel，peppermint，sharp
	丁香酚Eugenol		ND	ND	ND			焦香，丁香Burnt，clove
	反式-2-壬烯醛（E）-2-Nonenal		9.87	0	0			青草香气Grassy
	反-2-辛烯醛（E）-2-Octenal		11.47	11.44	6.46			蒲公英，脂肪，水果，草，绿色 Dandelion，fat，fruit，grass，green
	（E,E）-2,4-壬二烯醛 (E,E)-2,4-Nonadienal		78.56	0	0			麦片，油炸，脂肪，西瓜，湿羊毛Cereal，deep fried，fat，watermelon，wet wool
	2-正戊基呋喃 Furan,2-pentyl-		1.17	0	0			黄油，花香，水果，绿豆Butter，floral，fruit，green bean

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