Characteristics of Components and Contents of Organic Acid in Pear Fruits from Different Cultivated Species

ACTA HORTICULTURAE SINICA ›› 2014, Vol. 41 ›› Issue (4): 755-765.

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Characteristics of Components and Contents of Organic Acid in Pear Fruits from Different Cultivated Species

YAO Gai-fang1，YANG ZHi-jun1，ZHANG Shao-ling1，CAO Yu-fen2，LIU Jun3，and WU Jun1,*

（1Centre of Pear Engineering Technology Research，Nanjing Agricultural University，Nanjing 210095，China；2Institute of Pomology，Chinese Academy of Agricultural Sciences，Xingcheng，Liaoning 125100，China；3Institute of Forestry and Pomology，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100093，China）

Received:2013-11-06 Online:2014-04-25 Published:2014-04-25

Abstract

Abstract: The components and contents of organic acid in 98 pear cultivars of five species at maturity were determined by the High Performance Liquid Chromatography（HPLC）. The results indicated that total organic acid content in 98 pear cultivars varied greatly with a range of 1.28–23.47 mg · g^-1 FW. Among five species，total organic acid content of P. communis was the highest，followed by P. ussuriensis，P. bretschnrideri and P. pyrifolia，the lowest species was P. sinkiangensis.The contents of malic acid，which varied with the range of 0.73–23.16 mg · g^-1 FW and 0.02–15.29 mg · g^-1 FW，and accounted for 55.91% and 37.08% of the total organic acid content，respectively. The content of citric acid was higher than malic acid in most cultivars of P. communis，which were classified as citric dominant type. The cluster analysis of organic acid content revealed that P. bretschnrideri had close relationship with P. pyrifolia and P. ussuriensis，both P. communi and P. ussuriensis had higher organic acid，and P. communis showed distant relationship with other cultivated speices. and citric acid were the predominant organic acid in pear fruits

Key words: pear, high performance liquid chromatography（HPLC）, organic acids, cluster analysis

CLC Number:

S 661.2

YAO Gai-fang1，YANG ZHi-jun1，ZHANG Shao-ling1，CAO Yu-fen2，LIU Jun3，and WU Jun1,*. Characteristics of Components and Contents of Organic Acid in Pear Fruits from Different Cultivated Species[J]. ACTA HORTICULTURAE SINICA, 2014, 41(4): 755-765.

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Characteristics of Components and Contents of Organic Acid in Pear Fruits from Different Cultivated Species

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