摘要
以新鲜的土鸡蛋为原材料,比较不同的化学涂膜保鲜剂对土鸡蛋的保鲜作用。研究了在温度20℃、相对湿度约70%条件下贮藏30 d时间内,鸡蛋的失重率、气室高度、蛋黄指数、哈夫单位和蛋清pH值等新鲜度指标变化情况,筛选出保鲜效果较好的涂膜剂。结果显示:聚乙烯醇(PVA)涂膜剂;聚乙烯醇和双乙酸钠(SDA)复合涂膜剂;聚乙烯醇、双乙酸钠和液体石蜡复合涂膜剂三种涂膜保鲜剂均有保鲜效果,但保鲜效果优劣次序为(PVA+SDA+液体石蜡)>(PVA+SDA)>(PVA)。
The effect of different chemical coating on preservation of native eggs is studied using weight loss rate, the height of egg chamber, yolk index, haugh unit, pH of egg white as index, all of which were determined in the relative humidity of 70%, 20℃, when the eggs were preserved for 30 d. All of which the three chemical coatings, polyvinyl alcohol （PVA）, PVA ＋ sodium diacetate （SDA）, PVA ＋ SDA ＋ Liquid paraffin, have preservation effect on native eggs to some extent. The effect order of different chemical coatings on native eggspreservation was PVA ＋ SDA ＋ Liquid paraffin 〉 PVA ＋ SDA 〉 PVA.
出处
《商洛学院学报》
2015年第6期55-58,共4页
Journal of Shangluo University
基金
陕西省科学技术研究发展计划项目(2012K02-05)
关键词
土鸡蛋
化学涂膜剂
保鲜
native egg
chemical coating
preservation
