摘要
以低密度聚乙烯、线性低密度聚乙烯、乙烯/乙酸乙烯酯共聚物、Hβ分子筛及硬脂酸为原料,吹制获得新型聚乙烯复合膜。以新采鲜樱桃为保鲜对象,探讨了复合膜的保鲜效果及分子筛含量的影响。实验考察了樱桃贮藏后的外观变化、呼吸强度、失重率、折光率和硬度等指标。结果表明,室温下M3膜对新摘樱桃的保鲜效果最好,其保鲜时间达10d以上。
New type polyethylene composite membranes have been blown with low density polyethylene and linear low density polyethylene as the substrate,along with zeolite H-β,ethylene-vinyl acetate copolymer and sometimes stearic acid.Then these membranes were used to pack the freshly-harvested cherry to investigate the fresh-keeping effect and the influence of the zeolite content.We have experimentally obtained the appearance change,respiration rate,weight loss percentage,refractive index and hardness of stored cherry.Experimental results show that at ambient conditions,the M3 film has the best fresh-keeping effect for cherry and the fresh-keeping time can reach 10 more days.
出处
《食品科技》
CAS
北大核心
2010年第4期44-47,共4页
Food Science and Technology
基金
“十一五”国家科技职称计划重大项目(2006BAD05A05)
关键词
樱桃
聚乙烯复合膜
分子筛
保鲜
cherry
polyethylene composite membranes
zeolite
fresh-keeping
作者简介
王雪莲（1982-），女，河北承德人，硕士研究生，研究方向为农产品加工与贮藏。
通讯作者
