蔗渣原料中阿魏酸和对香豆酸的定量分析

李明富<sup>1; 2</sup>; 万广聪<sup>1; 2</sup>; 贾　转<sup>1; 2</sup>; 郭晨艳<sup>1; 2</sup>; 运晓静<sup>1; 2</sup>; 覃程荣<sup>1; 2</sup>; 王双飞<sup>1; 2</sup>; 闵斗勇<sup>1; 2; *</sup>

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Determination of Ferulic Acid and p-Coumaric Acid in Sugarcane Bagasse

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Key Words:sugarcane bagasse; ferulic acid; p-coumaric acid; extraction; GC-MS

Fund Project:中国博士后基金（2015M570419）；广西自然科学基金（2018JJA130224）；广西清洁化制浆与污染控制重点实验室基金（ZR201805-7）。

Author Name	Affiliation
LI Mingfu^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
WAN Guangcong^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
JIA Zhuan^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
GUO Chenyan^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
YUN Xiaojing^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
QIN Chengrong^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
WANG Shuangfei^1，2	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004
MIN Douyong^1，2,*	1. College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004

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Abstract:

Sugarcane bagasse was treated with alkaline hydrolysis， and ferulic acid and p-coumaric acid in one-step alkaline hydrolysate were quantitatively analyzed by gas chromatography （GC） and gas chromatography-mass spectrometry （GC-MS）. Mean while， ferulic acid and p-coumaric acid from sugarcane bagasse were extracted by alkaline hydrolysis followed by acid hydrolysis， and the effects of extraction solvent and hydrolysis temperature on the extraction rate of ferulic acid and p-coumaric acid were investigated. The results showed that compared with alkali extraction， combination of alkali extraction and acid extraction hydrolyzed more p-coumarate and ferulate acids. The yields of p-coumaric acid and ferulic acid were increased from 0.06% and 2.00% to 0.33% and 4.04%，respectively. The yields were also improved with the temperature increasing. When temperature increased from 25℃ to 60℃， yields of ferulic acid and p-coumaric acid were increased by 5.88%and 1.78%，respectively. Compared with using chloroform as extraction solvent， ethyl acetate could increase yields of ferulic acid and p-coumaric acid by 23.53% and 6.1 times， respectively. As a result， it was demonstrated that ester bond was the main linkage between p-coumaric acid to lignin and carbohydrate which accounted for 97.27% of total linkages in sugarcane bagasse. While， both of ester bond and ether bond were the linkages of ferulic acid to lignin or carbohydrate which respectively account for 51.51% and 48.49% of total linkages．

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