摘要
为探究定频和变频冰箱贮藏对果蔬品质、风味和微生物的影响,选取鲜切西瓜为试材,对其在144h贮藏期内上述指标的变化趋势做出分析。结果表明,虽然经定频和变频冰箱贮藏后,鲜切西瓜多酚氧化酶和抗坏血酸含量均呈逐渐降低的趋势,还原糖含量呈先降低后升高的趋势,但变频冰箱贮藏鲜切西瓜多酚氧化酶和抗坏血酸含量高于定频冰箱,并且己醛、6-甲基-5-庚烯-2-酮、壬醛、反-6-壬烯醛、顺-2-壬烯醛、反,顺-2,6-壬二烯醛几种关键香气成分含量更高,大肠杆菌数量和菌落总数显著少于定频冰箱。总体看来,在鲜切西瓜贮藏方面变频冰箱比定频冰箱具有更大的优势。
In order to compare with the different effect of refrigerator storage of fixed and variable frequency on quality,flavor and microorganism of fruit and vegetable,fresh cut watermelon had been selected to analyze the parameter variation during 144h storage. After storage,polyphenol oxidase activity and ascorbic acid content both decreased,reducing sugar content decreased firstly and increased subsequently,while polyphenol oxidase activity and ascorbic acid content of variable frequency were higher than that of fixed one. The content of volatile compound such as hexanal, 6-methyl-5-hepten-2-one, nonanal, （ E ） -6-nonenal, （Z） -2-nonenal, （E,Z）-2,6-nonadienal were higher and the amount of Escherichia Coil and bacterial colony than that of fixed one. Overall,variable freauencv refriaerator has qreater advantacle on fresh cut watermelon.
出处
《食品工业科技》
CAS
CSCD
北大核心
2014年第14期351-355,358,共6页
Science and Technology of Food Industry
基金
校企合作项目
国家自然科学基金项目(31201400)
北京市委组织部优秀人才项目(2011D005003000007)
关键词
定频
变频
鲜切西瓜
品质
fixed frequency
variable frequency
fresh cut watermelon
quality
