海带多糖协同电子束辐照对生鲜猪肉的保鲜作用  

Effect of Kelp Polysaccharide Addition and Electron Beam Irradiation on Fresh Pork Preservation

作　　者：刘文龙[1] 雷英杰 杨玉琴 刘倩[1] 魏明梅 陈尚戊 王卫[1] LIU Wen-long;LEI Ying-jie;YANG Yu-qin;LIU Qian;WEI Ming-mei;CHEN Shang-wu;WANG Wei(Meat Processing Key Laboratory of Sichuan Province,Chengdu University,Chengdu 610106,Sichuan,China)

机构地区：[1]成都大学肉类加工四川省重点实验室,四川成都610106

出　　处：《食品研究与开发》2022年第18期34-40,共7页Food Research and Development

基　　金：四川省重点研发项目(2020YFN0151);四川省科技成果转移转化示范项目(2020ZHCG0010、2020ZHCG0089)。

摘　　要：为延长生鲜猪肉货架期,将海带多糖应用到电子束辐照后的生鲜猪肉保鲜中,在12 d的贮藏期间内进行感官品质及理化指标的测定。结果表明,添加海带多糖之后能提高鲜肉红度值,对亮度值不会造成明显的影响,3%、5%浓度海带多糖会显著提升猪肉黄度值。猪肉感官评分经电子束辐照处理之后会略微降低,色泽受辐照影响显著。与对照组相比添加海带多糖后,对各组生鲜肉弹性影响不大,猪肉硬度和咀嚼性下降。在第12天时,5%添加量的海带多糖组硫代巴比妥酸反应物(thiobarbituric acid reactive substance,TBARS)值和菌落总数最低,分别为0.765 mg/kg、2.83 lg(CFU/g)。这说明海带多糖具有良好抑菌作用,能减缓pH值的上升,降低脂肪氧化速率,在9 d贮藏时间内能维持生鲜猪肉的品质。For extending the shelf life of fresh pork,kelp polysaccharide was added to fresh pork irradiated using electron beam,and its sensory quality and physicochemical indices were determined during 12 days of storage.The addition of kelp polysaccharide increased the redness value of fresh pork but had no evident effect on the brightness value;the addition of 3%and 5%kelp significantly increased the yellowness value of pork.The sensory score of pork was slightly decreased after electron beam irradiation,and the color of pork was significantly affected by irradiation.Kelp polysaccharide addition had little effect on the elasticity of fresh meat in each treated group,and the hardness and chewiness of pork decreased compared with those in the control group.On day 12,the thiobarbituric acid reactive substance value and colony value of the 5%kelp group were the lowest[0.765 mg/kg and 2.83 lg(CFU/g),respectively].Together,these results indicate that polysaccharides extracted from kelp have good antibacterial effects,can slow down the increase in pH,reduce fat oxidation,and maintain the quality of fresh pork during 10 days of storage.

关 键 词：保鲜 感官品质 抑菌作用 脂肪氧化 电子束辐照 

分 类 号：TS251.51[轻工技术与工程—农产品加工及贮藏工程]