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杨树花提取物对决明子胶/羧甲基淀粉钠复合膜性能影响的研究 被引量:7

Effect of Plant Aspen Flower Extract on the Properties of CG/CMS Composite Film
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摘要 为研究杨树花提取物(Plant aspen flower extract,PA)对决明子胶(Cassia gum,CG)/羧甲基淀粉钠(Sodium carboxymethyl starch,CMS)复合膜性能的影响,本文以CG/CMS为成膜基质,甘油为增塑剂,混合不同质量分数杨树花提取物制备CG-PA-S薄膜,可用于食品包装。主要分析PA加入量对CG-PA-S薄膜的结构、力学性能、阻隔性能和抗氧化性能的影响,再与其他文献研究的生物质膜进行比较。结果表明,当PA质量分数为6%时,复合膜有较好的性能参数,此时力学强度为26.16 MPa、断裂伸长率为46.07%;随着PA的质量分数由0%增至6%,氧气透过系数由2.64×10^(-12) cm^(3)/(mm^(2)·d·Pa)增至3.11×10^(-12) cm^(3)/(mm^(2)·d·Pa),50%乙醇环境下总酚质量分数由0.104 mg/g增至0.582 mg/g,ABTS+自由基的清除率也由24.33%增至87.83%。 In this study,the influence of plant aspen flower extract on the properties of cassia gum(CG)/sodium carboxymethyl starch(CMS)composite film was investigated.CG-PA-S films were prepared by using CG/CMS as film-forming matrix,glycerin as plasticizer and plant aspen flower extracts mixed with different mass fractions,and these films can be used in food packing.The effects of the addition amount of PA on the structure,mechanical properties,barrier properties and oxidation resistance of CG-PA-S films were mainly investigated,and then compared with the biomass films studied in other literatures.The results showed that when the mass fraction of PA was 6%,the composite film had better performance parameters,with the mechanical strength of 26.16 MPa and the elongation at break of 46.07%.With the increase of PA content from 0% to 6%,the oxygen permeability coefficient increased from 2.64×10^(-12) cm^(3)/(mm^(2)·d·Pa)to 3.11×10^(-12) cm^(3)/(mm^(2)·d·Pa),the total phenol content in 50% ethanol increased from 0.104 mg/g to 0.582 mg/g,and the ABTS+free radical clearance rate increased from^(2)4.33% to 87.83%.
作者 常馨月 吴天宇 刘文华 谭筱萌 沈怡欢 王立娟 CHANG Xinyue;WU Tianyu;LIU Wenhua;TAN Xiaomeng;SHEN Yihuan;WANG Lijuan(Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education,Northeast Forestry University,Harbin 150040,China)
出处 《森林工程》 北大核心 2021年第5期37-42,共6页 Forest Engineering
基金 国家自然科学基金项目(3177068) 东北林业大学大学生创新创业训练计划项目资助(201910225156)。
关键词 决明子胶 羧甲基淀粉钠 复合膜 杨树花提取物 抗氧化膜 阻隔性能 Cassia gum sodium carboxymethyl starch composite film plant aspen flower extract antioxidant film barrier performance
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