2011•Nanjing Nongye Daxue xuebaoRequires access
Correlation analysis of changes in the contents of organic acid in developing fruit and leaf of ‘Xinping pear’
Shutian Tao
Open publisher page 0 citations
Abstract
The contents of organic acids of ‘Xinping pear’ in developing fruit and leaf were examined using HPLC(High Performance Liquid Chromatography).The results showed that the contents of the total organic acid in fruit decreased from 7.67 mg·g-1 to 5.31 mg·g-1,the contents of citric acid,malic acid and lactic acid increased by 2.75,0.50 and 0.001 mg·g-1,respectively;while the contents of quinic acid,oxalic acid,shikimic acid,acetic acid and succinic acid decreased by 4.19,0.002,0.29,0.09 and 0.05 mg·g-1,respectively;the ratio of the contents of citric acid,malic acid,oxalic acid and lactic acid in the total organic acid increased by 53.33%,16.04%,1.01% and 0.11%,respectively;whereas the ratio of the contents of quinic acid,shikimic acid,acetic acid and succinic acid in the total organic acid decreased by 65.09%,3.62%,0.11% and 0.67%,respectively.The contents of the total organic acid in leaf decreased from 6.18 mg·g-1 to 5.36 mg·g-1;the contents of citric acid,quinic acid,oxalic acid and lactic acid increased by 1.34,1.09,0.43 and 0.01 mg·g-1 respectively;while the contents of malic acid,shikimic acid and succinic acid decreased by 1.61,0.26 and 1.82 mg·g-1 respectively;the ratio of the contents of citric acid,quinic acid,oxalic acid,lactic acid and acetic acid in the total organic acid increased by 25.07%,20.44%,9.72%,0.005% and 0.005%,respectively;while the ratio of the contents of malic acid,shikimic acid and succinic acid in the total organic acid decreased by 24.65%,4.12% and 26.46%,respectively.The content of citric acid in fruit exhibited significant and strong positive correlation with the content of it in leaf,the content of acetic acid exhibited significant positive correlation with the content of it in leaf;the contents of malic acid and quinic acid exhibited negative correlation with the contents of them in leaf,the contents of oxalic acid,shikimic acid,succinic acid and total organic acid exhibited positive correlation with the contents of them in leaf.