摘要
冷藏条件下,为研究菠菜气调包装(MAP)的最佳气体比例,延长菠菜保质期,选用农大菠杂1号为试材,以高阻隔性聚丙烯/聚乙烯(BOPP/PE)复合膜为包装袋,测定5种不同气体比例下菠菜的失重率、维生素C含量、叶绿素含量、相对电导率等理化指标的变化,并对其进行感官评价。结果表明,初始气体O2、CO2、N2的体积分数分别为10%,2%,88%时,贮藏第18 d,菠菜的感官评价5.5分,高于其他组;失重率较低,为0.32%,电导率上升较慢,为10.25%。在贮藏期最长的18 d,MA4组菠菜维生素C含量为1.25 mg/100 g,叶绿素含量为445.70 mg/kg,营养成分含量仍然较高。结论:菠菜在低温贮藏时,因呼吸作用较强,适宜的贮藏条件为高浓度的氧气(5%~10%);低浓度的二氧化碳(2%~4%)。
Under refrigerated condition,in order to study the optimal gas proportion of the spinach air conditioning packaging environment to extend the period of the spinach shelf life.This experiment chooses nongda bo＇ s miscellaneous 1 as the test materials, with high barrier property of polypropylene film/PE, BOPP/PE ）composite film for packaging materials, determination of 5 kinds of spinach weightlessness rate under different gas ratio, vitamin C content, chlorophyll content, relative electric conductivity and other physical and chemical indicators of change, and sensory evaluation. Results showed that the initial gas volume fraction of 02 , CO2, N2 were as follows ： 10% , 2%, 88% , storage to 18th d, the sensory evaluation of spinach was 5.5 points higher than that of other groups.The weight loss rate was low, at 0.32% , and the conductivity increased slowly, to 10.25%. At the longest storage period, the total amount of vitamin C in the MA4 group was 1.25 mg/100 g, and the content of chlorophyll was 445.70 mg/kg, while the content of the nutrient content remained high. Conclusion ： when the spinach was stored at low temperature, beeause of the strong respiration, the suitable storage condition was high concentration of oxygen（5%- 10% ）and low concentration of carbon dioxide（2%-4% ）.
作者
张乙博
刘建新
周婧
许丽
彭兴帅
刘慧君
陈湘宁
徐娜
ZHANG Yi- bo1,2 , LIU Jian- xin3 , ZHOU Jing3 , XU Li1,2 , PENG Xing-shuai3 , LIU Hui-jun1,2, CHEN Xiang-ning1,2, XU Na4(l.Department of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China ; 2.Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue, Beijing 102206,China; 3.Beijing Yunong High Quality Cultivation of Agricultural Products Company,Beijing 101400,China; 4.Beijing Agricultural Technology Promotion Station,Beijing 100101 ,Chin)
出处
《食品工业科技》
CAS
CSCD
北大核心
2018年第7期276-279,285,共5页
Science and Technology of Food Industry
基金
北京市属高等学校高层次人才引进与培养计划项目(CIT&TCD20150315)
北京市农业局财政项目"叶类蔬菜产业技术体系北京市创新团队(BAIC07)"
关键词
菠菜
气调包装(MAP)
气体比例
冷藏保鲜
保质期
spinach
modified atmosphere packaging
gas ratio
preservation and cold storage
shelf life
