甲壳素纳米晶须/聚乳酸纳米纤维膜对草莓保鲜效果的影响

Effect of Chitin Nanowhisker/Polylactic Acid Nanofiber Film on the Preservation of Strawberries

DOI：10.3969/j.issn.1673-1689.2012.11.011

中文关键词: 甲壳素纳米晶须 聚乳酸 纳米纤维膜 草莓 保鲜

英文关键词: Chitin nanowhisker polylactic acid nanofiber film strawberry preservation

基金项目:中央高校基本科研业务费专项资金(JUSRP21001);生态纺织教育部重点实验室资助课题(KLET1007);纤维材料改性国家重点实验室资助课题(LK1005)

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中文摘要:

采用静电纺丝法,制备一种具有良好保鲜作用的甲壳素纳米晶须/聚乳酸(CNW/PLA)纳米纤维膜,分别用PE保鲜膜、纯PLA纳米纤维膜及CNW/PLA纳米纤维膜对草莓进行包装处理,并在贮藏期间,观察草莓的外观变化,测定其腐烂指数、失重率、可滴定酸含量及维生素C质量分数的变化来比较各种包装材料对草莓保鲜效果的影响。结果表明:CNW/PLA纳米纤维膜可在一定程度上延缓草莓的失重、抑制可滴定酸质量分数及维生素C质量分数的下降,具有显著的抗菌保鲜效果。

英文摘要:

In this manuscript,the effect of chitin nanowhisker(CNW)/polylactic acid(PLA) nanofiber film on the preservation of strawberries was investigated.The decay index,weight loss,titratable acidity content and VC content of strawberries packaged with CNW/PLA nanofiber films were determined and compared,and the results indicated that CNW/PLA nanofiber film could decrease the decay index and weight loss,and delay the decline of titratable acidity and vitamin C contents.Furthermore,CNW/PLA nanofiber film exhibited strong antisepsis preservation on the strawberries.

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