安徽农业大学学报2017，Vol.44Issue(5)：929-935,7.DOI:10.13610/j.cnki.1672-352x.20171017.004
聚乳酸薄膜处理对黄花菜保鲜效果分析
Application of polylactic acid film packaging to daylily flower preservation
顾岩岩 1徐璐 1付正义 1程树军 1顾金楼1
作者信息
- 1. 华东理工大学材料科学与工程学院,上海200237
- 折叠
摘要
Abstract
Polylactic acid is a biodegradable material.In order to explore the effect of polylactic acid (PLA) film on fresh keeping of daylily flowers,an experiment was carried to determine if the PLA film thickness af fected the preservation effect of daylily flowers with the polyethylene (PE) film as a control.The relevant quality indexes of daylily flowers were periodically recorded at (25±1)℃.The results showed that a gas condition with less oxygen and more carbon dioxide was formed inside the PLA film due to its lower O2 and CO2 penetration rate compared to the PE film.Such a gas condition inhibited the respiration of daylily flowers and obviously slowed the declining of soluble protein,soluble sugar,chlorophyll and ascorbic acid (Vc) contents in daylily flowers.The gas condition also inhibited the rising of permeability of cell-membrane and peroxidase (POD) activ ity during a storage period,which obviously prolonged the daylily flower storage time to 12 d,longer than 9 d of PE films.PLA film with 25 μm thickness showed the best preservation result.关键词
黄花菜/聚乳酸薄膜/气调包装/品质Key words
daylily flower/polylactic acid film/atmosphere packaging/quality分类
农业科技引用本文复制引用
顾岩岩,徐璐,付正义,程树军,顾金楼..聚乳酸薄膜处理对黄花菜保鲜效果分析[J].安徽农业大学学报,2017,44(5):929-935,7.
