摘要
为了研究壳聚糖-魔芋粉复合保鲜液对长白楤木嫩芽的保鲜效果,分别以0.25%、0.5%、0.75%的壳聚糖与0.4%的魔芋粉复配制成保鲜液,对长白楤木嫩芽进行涂膜处理,4℃条件下贮藏,测定贮藏期间长白楤木嫩芽感官品质、失重率、叶绿素、Vc、可滴定酸、丙二醛(MDA)、过氧化物酶(POD)和多酚氧化酶(PPO)等理化指标的变化。结果表明:0.5%的壳聚糖与0.4%的魔芋粉复合保鲜液对贮藏期间长白楤木嫩芽保鲜效果最显著,使长白楤木嫩芽的感官品质保持良好,明显降低长白楤木嫩芽的失重率,延缓叶绿素、Vc、可滴定酸和MDA含量的变化,抑制长白楤木嫩芽中POD活性、PPO活性,可使长白楤木嫩芽长达18 d的保鲜期。因此,0.5%壳聚糖与0.4%魔芋粉复合保鲜液在长白楤木嫩芽保鲜方面具有较好的应用价值。
In order to study fresh-keeping effect of chitosan and konjak powder composite fresh-keeping solution on Aralia continentalis kitagwa sprouts,0.25%,0.5%,0.75%chitosan and 0.4%konjak powder were mixed to prepare preservative solution.Aralia continentalis kitagwa sprouts were coated and stored at 4℃.The changes in physical and chemical indicators such as sensory quality,weight loss rate,chlorophyll,Vc,titratable acid,malondialdehyde(MDA),peroxidase(POD)and polyphenols oxidase(PPO)of Aralia continentalis kitagwa sprouts were measured during storage.The results showed that 0.5%chitosan and 0.4%konjak powder composite preservation liquid had the most significant effect on the preservation of Aralia continentalis kitagwa sprouts during storage,which kept the sensory quality of Aralia continentalis kitagwa sprouts well and significantly reduced the growth of Aralia continentalis kitagwa sprouts.The changes of weight loss rate,chlorophyll,Vc,titratable acid and MDA,and inhibits POD activity and PPO activity in Aralia continentalis kitagwa sprouts.It can make the Aralia continentalis kitagwa sprouts have a shelf life of 18 d.Therefore,0.5%chitosan and 0.4%konjak powder composite preservation liquid have good application value in preservation of Aralia continentalis kitagwa sprouts.
作者
段红梅
何建新
王丹丹
阿丽雅
洪豆
江宇峰
吴淑清
王晓红
DUAN Hongmei;HE Jianxin;WANG Dandan;A Liya;HONG Dou;JIANG Yufeng;WU Shuqing;WANG Xiaohong(Food Science and Engineering College,Changchun University,Changchun 130022;Zhejiang Liziyuan Food Limited Company,Jinhua 321031)
出处
《食品科技》
CAS
北大核心
2019年第12期42-47,共6页
Food Science and Technology
基金
教育部“春晖计划”项目(Z2017026)
2018年企事业单位委托科技项目(2018220002000111).
关键词
长白楤木嫩芽
壳聚糖
魔芋粉
涂膜
保鲜
Aralia continentalis kitagwa sprouts
chitosan
konjak powder
coating
fresh-keeping
作者简介
段红梅(1992—),女,内蒙古包头人,硕士研究生,研究方向为农产品加工与储藏;通信作者:吴淑清;通信作者:王晓红
