包装与食品机械2018，Vol.36Issue(3)：26-30,5.DOI:10.3969/j.issn.1005-1295.2018.03.006
环保型蓄冷剂的制备及包装应用
Preparation and Packaging Application of the Environment-friendly Cold Storage Agent
傅仰泉 1张帆 1李聿乔 1张笑涵 1何莹 1温丽璇1
作者信息
摘要
Abstract
Objective: to prepare a kind of environment-friendly cold storage agent and apply it in packaging by taking freshly picked strawberries as the packaging object. Method: Mannitol solution and sodium carbonate (Na2CO3) solution were used as the main energy storage agents,borax and sodium carboxymethyl cellulose (CMC) were selected as the nucleating agents and thickeners,respectively,and free water was added in to increase latent heat of the phase transformation of the system. The prepared cold storage agent was sealed with a film and then frozen to solidification,then after it was placed on 6 surfaces of the temperature controlled packing box,an appropriate amount of cold storage agent was filled in and placed in a 25℃ constant temperature environment,then the temperature change of the sample at different time was recorded in order to verify the cold storage effect of the prepared cold storage agent.Result:The optimum preparation formula was 6% mannitol,2%Na2CO3,2% borax and 5%CMC.The phase transformation temperature of the cold storage agent was about 5℃,at which the subcooling was small,and there was no phase separation phenomenon. The latent heat of phase transformation was 290.2 kJ/kg.Conclusion:The results show that the prepared cold storage agent has good application value.关键词
蓄冷剂/温控包装/环保Key words
cold storage agent/temperature controlled packaging/environmental protection分类
轻工纺织引用本文复制引用
傅仰泉,张帆,李聿乔,张笑涵,何莹,温丽璇..环保型蓄冷剂的制备及包装应用[J].包装与食品机械,2018,36(3):26-30,5.
