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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (9): 2439-2452.doi: 10.16420/j.issn.0513-353x.2024-0943

• Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Differences in Volatile Compounds of Citrus medica‘Guangdong Xiangshui’Fruits in Different Harvesting Seasons from Weishan of Yunnan Province

LI Xue1,2, CAI Zhonghu3, GAO Junyan4, CHEN Jiajing1,2, LIU Yuan1,2,*(), XU Juan1,2,*()   

  1. 1 National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsCollege of Horticulture & Forestry Sciences,Huazhong Agricultural University, Wuhan 430070, China
    2 Horticultural Products Sensory Evaluation and Quality Testing CenterHuazhong Agricultural University, Wuhan 430070, China
    3 Yunnan Dali Weishan Jufeng Agricultural Technology Co.Ltd,Dali, Yunnan 671000, China
    4 Institute of Tropical and Subtropical Cash CropsYunnan Academy of Agricultural Sciences,Baoshan, Yunnan 678000, China
  • Received:2025-04-23 Revised:2025-07-07 Online:2025-09-25 Published:2025-09-24
  • Contact: LIU Yuan, XU Juan

Abstract:

Taking the fruits of‘Guangdong Xiangshui’lemon(Citrus medica)harvested in spring,summer,autumn and winter in Weishan area of Yunnan as materials,the volatile profiles of fruit slices at post flowering stage,enlargement stage and commercial maturity stage were analyzed using gas chromatography-mass spectrometry(GC-MS). The results showed that 32 volatile compounds were detected in all the samples,including 8 monoterpenes,2 monoterpene alcohols,3 monoterpene aldehydes,3 monoterpene esters,1 monoterpene oxide,10 sesquiterpenes,1 sesquiterpene alcohol,3 aldehydes and 1 other compound. Monoterpenes were dominated by d-Limonene and β-Myrcene,and d-Limonene accounted for 86.08% to 92.02% of the total volatiles;monoterpene aldehydes were dominated by β-Citral,α-Citral and Citronellal. Among different development stages,volatile compounds were most abundant in the post flowering stage. Regarding commercial maturity stage fruits of each season,winter fruits had the highest total volatile content,the richest compounds were found in summer fruits,whereas spring fruits had the least compounds and lowest content. PLS-DA analysis based on volatiles can effectively distinguish commercial maturity stage fruits harvested from different seasons;α-Terpinol content was the highest in autumn fruits,reaching(2.49 ± 0.18)μg · g-1,whilst it was only(1.59 ± 0.18)μg · g-1 in summer fruits;Undecanal was detected only in winter fruits. Largely variated volatile compounds richness and contents at different development stages of four seasons in the slices of Guangdong Xiangshui lemon fruits were investigated. During the enlargement stage in autumn,the fruits had the best aroma quality due to the accumulation of aroma active compounds such as citronellal,β-citral and α-citral;the aroma quality of fruits at the commercial maturity stage was superior when harvested in winter and summer;the fruits at post flowering stage harvested in summer had the highest content of volatile compounds. The results of this study can provide data support for timely harvesting and quality monitoring of Guangdongxiangshui lemon in Weishan,Yunnan.

Key words: Citrus medica‘Guangdong Xiangshui’, volatile compounds, harvested seasons, gas chromatography-mass spectrometry