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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (3): 16-22.doi: 10.3969/j.issn.0253-2417.2016.03.003

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Quantitative Determination of Ferulic and p-Coumaric Acids in Cell Wall of Moso Bamboo Green and Bamboo Yellow

HUANG Cao-xing1, HE Juan1, MIN Dou-yong2, LI Xin1, DU Li-ting3, YONG Qiang1   

  1. 1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
    2. College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;
    3. Advanced Analysis and Testing Center, Nanjing Forestry University, Nanjing 210037, China
  • Received:2015-08-20 Online:2016-06-25 Published:2016-07-07

Abstract: Moderate alkali hydrolysis and acid hydrolysis were applied to quantitatively determine the amount of ferulic and p-coumaric acid in the cell wall of Moso bamboo green and bamboo yellow. The results indicated that 3.07% of ferulic acid and 5.91% of p-coumaric acid were found in the bamboo green cell wall. And 1.61% ferulic acid and 4.64% p-coumaric acid were ester-linked to the bamboo green cell wall components, while 1.46% ferulic acid and 1.27% p-coumaric acid were ether-linked to the cell wall component. For bamboo yellow, there were 3.11% of ferulic acid and 5.51% of p-coumaric acid. The amounts of ester-linked and ether-linked ferulic acid were 1.71% and 1.40%, respectively. And the amounts of ester-linked and ether-linked p-coumaric acid were 4.34% and 1.17%, respectively. Two-dimensional heteronuclear single quantum correlation nuclear magnetic resonance(2D-HSQC NMR) confirmed that the ester-linked ferulic and p-coumaric acid in the alkaline-soluble lignins of bamboo green and bamboo yellow might be esterified in the γ position of β-O-4 aryl ether bonds in the lignin.

Key words: bamboo green, bamboo yellow, ferulic acid, p-coumaric acid, quantitative determination, 2D-HSQC NMR

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