Enhancing isolation of p-coumaric and ferulic acids from sugarcane bagasse by sequential hydrolysis

被引:0
作者
Mingfu Li
Zhuan Jia
Guangcong Wan
Shuangfei Wang
Douyong Min
机构
[1] Guangxi University,College of Light Industry and Food Engineering
[2] Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control,undefined
来源
Chemical Papers | 2020年 / 74卷
关键词
Sugarcane bagasse; Sequential hydrolysis; -Coumaric acid; Ferulic acid; Lignin;
D O I
暂无
中图分类号
学科分类号
摘要
To improve the yield of p-coumaric acid (p-CA) and ferulic acid (FA), sequential alkaline and acid hydrolysis was applied to sugarcane bagasse. Gas chromatography-mass spectrometry was used to quantify p-CA and FA. The sequential hydrolysis isolated more p-CA and FA from sugarcane bagasse than did alkaline hydrolysis or acid hydrolysis alone. Ethyl acetate extracted more p-CA and FA than chloroform. Increased temperature improved the yield of p-CA and FA. The total yields of p-CA and FA from sugarcane bagasse were 4.38 and 0.79%, respectively. For p-CA, the ester and ether bonds accounted for 93.60% and 6.40% of the total linkages, respectively. For FA, the ester and ether bonds accounted for 51.90% and 48.10% of the total linkages, respectively. Cleavage of the bond between hydroxycinnamic acid (p-CA and FA) and lignin was also confirmed by 13C NMR through comparison with the spectra of milled wood lignin and alkaline-soluble lignin.
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页码:499 / 507
页数:8
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