文章摘要
贾金匣,张 蕾.超市蔬菜用阻光包装膜的研究[J].包装工程,2011,32(1):54-57,79.
JIA Jin-xia,ZHANG Lei.Study of Anti-light Packaging Film for Supermarket Vegetable[J].Packaging Engineering,2011,32(1):54-57,79.
超市蔬菜用阻光包装膜的研究
Study of Anti-light Packaging Film for Supermarket Vegetable
投稿时间:2010-10-26  修订日期:2011-01-10
DOI:
中文关键词: 鲜切西兰花  阻光包装材料  紫外线吸收剂  货架寿命
英文关键词: fresh-cut broccoli  anti-light packaging material  UV absorber  shelf life
基金项目:
作者单位
贾金匣 天津科技大学天津300222 
张 蕾 天津科技大学天津300222 
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中文摘要:
      为了减小超市灯光中紫外线对包装鲜切西兰花的货架寿命的影响,采用LDPE与紫外线吸收剂UV531共混的方法制备选择性阻光薄膜,UV-531所占质量分数分别为O,0.1%,0.3%和0.5%。使用制备的4种薄膜和超市现用LLDPE保鲜膜包装鲜切西兰花,置于超市用灯光下进行保鲜研究。结果表明:添加紫外线吸收剂的LDPE薄膜的透光率随着紫外线吸收剂添加量的增加而降低;在室温(29+l)℃条件下,添加紫外线吸收剂的LDPE薄膜对鲜切西兰花的保鲜效果均好于超市现用LLDPE保鲜膜;其中添加量为0.3%时能够更好地保护鲜切西兰花的叶绿素和水分,保鲜效果最好。
英文摘要:
      The purpose of this research is to reduce the effect of UV on shelf life of packaged broccoli in supermarket. Selective anti-light packaging films were prepared using LDPE and UV absorber UV-531 by blending method , which has UV-531 proportion of 0 ,0. 1 ,0. 3 ,and 0. 5 percent respectively. The prepared films and current used LLDPE film in supermarket were used to pack broccoli and exposed under supermarket light for preservation research. The result showed that the transmittance of the LDPE film decreases with increase of UV absorber content. Under room temperature (29+l) ℃ , the preservation effect of the LDPE films with UV absorber for broccoli is better than LLDPE film. The proportion of 0. 3 percent has the best effect, which can protect chlorophyll and water better.
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