油茶壳木质素理化性质及表征

TS201.1; 为充分利用油茶壳资源,研究分别采用醋酸法和碱法提取油茶壳木质素,并对其基本成分、理化性质和结构表征进行了分析.结果表明:提取的醋酸木质素(91.87％)纯度略微低于碱木质素(93.37％);且醋酸木质素中[C]和固定碳含量较高.两种木质素抗氧化力远大于油茶壳粗膳食纤维;与碱木质素相比,醋酸木质素持水力、溶胀力分别增加了59.49％、55.36％,饱和与不饱和脂肪结合力分别增加了5.06％、2.24％,DPPH自由基清除力增加了10.50％,吸湿率降低了28.14％.紫外和红外光谱谱图可知,醋酸木质素和碱木质素主要由愈创木基和紫丁香基组成;醋酸木质素中愈创木基含量更高,碱木质素...

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Published in食品工业科技 Vol. 42; no. 4; pp. 33 - 38
Main Authors 李晗, 杨威岭, 杨宗玲, 范方宇, 王昌命
Format Journal Article
LanguageChinese
Published 西南林业大学林学院,云南昆明650224%西南林业大学生命科学学院,云南昆明650224 01.02.2021
Subjects
理化性质
结构表征
油茶壳
碱木质素
醋酸木质素
Online AccessGet full text
ISSN1002-0306
DOI10.13386/j.issn1002-0306.2020050136

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Abstract TS201.1; 为充分利用油茶壳资源,研究分别采用醋酸法和碱法提取油茶壳木质素,并对其基本成分、理化性质和结构表征进行了分析.结果表明:提取的醋酸木质素(91.87％)纯度略微低于碱木质素(93.37％);且醋酸木质素中[C]和固定碳含量较高.两种木质素抗氧化力远大于油茶壳粗膳食纤维;与碱木质素相比,醋酸木质素持水力、溶胀力分别增加了59.49％、55.36％,饱和与不饱和脂肪结合力分别增加了5.06％、2.24％,DPPH自由基清除力增加了10.50％,吸湿率降低了28.14％.紫外和红外光谱谱图可知,醋酸木质素和碱木质素主要由愈创木基和紫丁香基组成;醋酸木质素中愈创木基含量更高,碱木质素中紫丁香基含量更高.热重分析可知,醋酸木质素热稳定性高于碱木质素,更适于高温耐热材料的制备.
AbstractList TS201.1; 为充分利用油茶壳资源,研究分别采用醋酸法和碱法提取油茶壳木质素,并对其基本成分、理化性质和结构表征进行了分析.结果表明:提取的醋酸木质素(91.87％)纯度略微低于碱木质素(93.37％);且醋酸木质素中[C]和固定碳含量较高.两种木质素抗氧化力远大于油茶壳粗膳食纤维;与碱木质素相比,醋酸木质素持水力、溶胀力分别增加了59.49％、55.36％,饱和与不饱和脂肪结合力分别增加了5.06％、2.24％,DPPH自由基清除力增加了10.50％,吸湿率降低了28.14％.紫外和红外光谱谱图可知,醋酸木质素和碱木质素主要由愈创木基和紫丁香基组成;醋酸木质素中愈创木基含量更高,碱木质素中紫丁香基含量更高.热重分析可知,醋酸木质素热稳定性高于碱木质素,更适于高温耐热材料的制备.
Author 范方宇
王昌命
杨威岭
杨宗玲
李晗
AuthorAffiliation 西南林业大学林学院,云南昆明650224%西南林业大学生命科学学院,云南昆明650224
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FAN Fangyu
YANG Weiling
LI Han
WANG Changming
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结构表征
油茶壳
碱木质素
醋酸木质素
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Title 油茶壳木质素理化性质及表征
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