增塑剂对壳聚糖-小檗碱复合膜物理和抗菌性能的影响

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北京化工大学学报（自然科学版） ›› 2011, Vol. 38 ›› Issue (5) : 100-104.

唐秋萍;葛喜珍;田平芳*

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Influence of plasticizers on the physical performance and antimicrobial activity of a chitosan-berberine composite membrane

TANG QiuPing¹;GE XiZhen²;TIAN PingFang¹

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研究了工业无毒增塑剂柠檬酸三乙酯、乙酰柠檬酸三乙酯、柠檬酸三丁酯和乙酰柠檬酸三丁酯在可食性膜中添加的可能性，及其对可食性膜机械性能的影响。通过正交试验确定在60℃下，壳聚糖与甘油质量比为8∶5（即壳聚糖0.02g/mL，甘油0.0125g/mL），增塑剂体积分数在0.75%时，该膜的机械性能最佳。抑菌圈法检测表明柠檬酸三丁酯的添加不影响膜对桃褐腐病菌（Monilinia fructicola）的抑制作用。膜包裹法处理实体桃，结果表明室温下放置10d，膜包裹法处理的桃果实日失重率达到30%以上，腐烂指数近60%，而对照组日失重率达到40%

Abstract

The mechanical properties and antimicrobial activity of a chitosan-berberine composite film with added non-toxic edible industrial plasticizers, including triethyl citrate, triethyl 2-acetyl citrate, tributyl citrate and acetyl tributyl citrate, have been studied. The optimal blends were selected by orthogonal tests. The optimized film solutions were blended with chitosan at a concentration of 0.02g/mL, glycerol at a concentration of 0.0125g/mL and a plasticizer volume fraction of 0.75% at 60℃. Addition of plasticizer to the composite film did not significantly affect its inhibition on Monilinia fructicola by inhibitory zone. The rate of weight loss and the infection index on each day were investigated for peaches packed in the composite membrane. It was found that the weight loss of peaches treated for 10 days was slightly over 30% and the infection index was nearly 60%, both of which are lower than the respective values of 45% and nearly 90% for the control. Finally, the release characteristics in vitro were determined by a slow-release test, which revealed that the composite film exhibited slow-release behavior.

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唐秋萍¹;葛喜珍²;田平芳^1*

. 增塑剂对壳聚糖-小檗碱复合膜物理和抗菌性能的影响[J]. 北京化工大学学报（自然科学版）, 2011, 38(5): 100-104

TANG QiuPing¹;GE XiZhen²;TIAN PingFang¹

. Influence of plasticizers on the physical performance and antimicrobial activity of a chitosan-berberine composite membrane[J]. Journal of Beijing University of Chemical Technology, 2011, 38(5): 100-104

参考文献

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收稿日期	修回日期	出版日期
2011-04-22	1900-01-01	2011-09-20
发布日期
2011-09-20

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