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柚子皮中果胶提取与纯度鉴定 被引量:4
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作者 梁伟 矫继峰 +2 位作者 何赓源 邓博文 赵金香 《当代化工研究》 2022年第13期28-30,共3页
本研究以乙醇为沉淀剂,采用酸水解乙醇沉析法和超声波辅助提取法提取柚子皮中的果胶,通过红外光谱法与班氏试剂对提取的果胶进行表征,重量法分析果胶的纯度。经提取温度、提取时间、pH和乙醇浓度4个条件进行的单因素实验结果表明:以超... 本研究以乙醇为沉淀剂,采用酸水解乙醇沉析法和超声波辅助提取法提取柚子皮中的果胶,通过红外光谱法与班氏试剂对提取的果胶进行表征,重量法分析果胶的纯度。经提取温度、提取时间、pH和乙醇浓度4个条件进行的单因素实验结果表明:以超声波辅助提取法,在90℃、75min、pH为2和无水乙醇沉淀条件下,果胶提取率最高,纯度可达55.81%。 展开更多
关键词 果胶 红外光谱 超声波辅助提取 酸水解乙醇法
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Optimization of dilute acid hydrolysis of Enteromorpha 被引量:1
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作者 冯大伟 刘海燕 +2 位作者 李富超 姜鹏 秦松 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2011年第6期1243-1248,共6页
Acid hydrolysis is a simple and direct way to hydrolyze polysaccharides in biomass into fermentable sugars. To produce fermentable sugars effectively and economically for fuel ethanol, we have investigated the hydroly... Acid hydrolysis is a simple and direct way to hydrolyze polysaccharides in biomass into fermentable sugars. To produce fermentable sugars effectively and economically for fuel ethanol, we have investigated the hydrolysis of Enteromorpha using acids that are typically used to hydrolyze biomass: H2SO4, HC1, H3PO4 and C4H404 (maleic acid). 5%(w/w) Enteromorpha biomass was treated for different times (30, 60, and 90 min) and with different acid concentrations (0.6, 1.0, 1.4, 1.8, and 2.2%, w/w) at 121~C. H2SO4 was the most effective acid in this experiment. We then analyzed the hydrolysis process in H2SO4 in detail using high performance liquid chromatography. At a sulfuric acid concentration of 1.8% and treatment time of 60 min, the yield of ethanol fermentable sugars (glucose and xylose) was high, (230.5 mg/g dry biomass, comprising 175.2 mg/g glucose and 55.3 mg/g xylose), with 48.6% of total reducing sugars being ethanol fermentable. Therefore, Enteromorpha could be a good candidate for production of fuel ethanol. In future work, the effects of temperature and biomass concentration on hydrolysis, and also the fermentation of the hydrolysates to ethanol fuel should be focused on. 展开更多
关键词 ENTEROMORPHA acid hydrolysis ethanol fermentable sugars
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