辐照处理对鲜切胡萝卜贮藏品质变化研究  

Study on the changes of storage quality of fresh-cut carrot by irradiation treatment

作　　者：刘芯钥 陈云堂[3,4] 崔龙 范家霖[3,4] 李庆鹏 李淑荣[1] 哈益明 刘伟[3,4] LIU Xin-Yue;CHEN Yun-Tang;CUI Long;FAN Jia-Lin;LI Qing-Peng;LI Shu-Rong;HA Yi-Ming;LIU Wei(Institute of Food Science and Technology CAAS,Beijing 100089,China;Institute of Food and Nutrition Development,Development,Ministry of Agricultural CAAS,Beijing 100081,China;Henan Academy of Sciences Isotope Research Institute Co.,Ltd.,Zhengzhou 450000,China;Henan Province Key Laboratory of Nuclear Agriculture,Zhengzhou 450000,China)

机构地区：[1]中国农业科学院农产品加工研究所,北京100089 [2]中国农业科学院农业农村部食物与营养发展研究所,北京100081 [3]河南省科学院同位素研究所有限责任公司,郑州450000 [4]河南省核农学重点实验室,郑州450000

出　　处：《食品安全质量检测学报》2019年第24期8364-8370,共7页Journal of Food Safety and Quality

摘　　要：目的研究辐照处理对鲜切胡萝卜贮藏品质变化的影响。方法将鲜切胡萝卜经不同剂量(1.0、1.5、2.0、2.5、3.0 kGy)60Coγ射线辐照处理后,于室温20℃贮藏,在0、3、7、10 d测量其营养品质指标和生理生化指标。结果 60Coγ射线辐照处理对鲜切胡萝卜中可溶性糖含量和可溶性蛋白含量基本无影响;1.0、1.5、2.0 kGy剂量的60Coγ射线辐照处理可较好地保持鲜切胡萝卜的还原糖含量、类胡萝卜素含量、维生素C含量,其中1.5 kGy剂量处理效果最好;于20℃贮藏, 1.5、2.0 kGy剂量的60Coγ射线辐照处理可较好地保持鲜切胡萝卜的可溶性固形物含量,抑制多酚氧化酶的活性;1.0、1.5 kGy剂量的60Coγ射线辐照处理可较好地抑制过氧化物酶的活性。结论综合60Coγ射线辐照对鲜切胡萝卜各项指标的影响,确定1.5 kGy是较适宜的剂量。Objective To study the effect of irradiation treatment on the quality change of fresh-cut carrot storage. Methods The fresh-cut carrots were irradiated by different doses(1.0,1.5,2.0,2.5,3.0 kGy) 60Coγ-rays,stored at room temperature 20 ℃,and their nutritional quality indexes and physiological and biochemical indexes were measured at 0,3,7 and 10 d. Results 60Coγ-ray irradiation treatment had no effect on soluble sugar content and soluble protein content in fresh-cut carrots. The 60Coγ-ray irradiation treatment of 1.0,1.5,2.0 kGy dose could maintain the reducing sugar content,carotenoid content and vitamin C content of fresh-cut carrots,and the 1.5 kGy dose treatment was the best. Stored at 20 ℃,60Coγ-ray irradiation at a dose of 1.5 and 2.0 kGy could maintain the soluble solid content of fresh-cut carrots and inhibit the activity of polyphenol oxidase. And 1.0,1.5 kGy dose of 60Coγ ray irradiation treatment could inhibit the activity of peroxidase. Conclusion The effect of 60Coγ ray irradiation on various indexes of fresh-cut carrots is determined,and 1.5 kGy is a suitable dose.

关 键 词：鲜切胡萝卜 辐照 保鲜 类胡萝卜素 多酚氧化酶 

分 类 号：TS2[轻工技术与工程—食品科学与工程]