摘要
以肉牛蹄皮为试材,分别在75、80、85、90和95℃加热30、40、50、60和70 min,分析加热过程中牛蹄皮胶原蛋白含量及热溶解性变化,观察牛蹄皮微观结构的改变,测定其剪切力、蒸煮损失和质构特性变化。结果表明:随加热时间的延长和温度的升高,可溶解胶原蛋白含量和胶原蛋白溶解度逐渐增大(P<0.05),不可溶解胶原蛋白含量整体呈下降趋势,牛皮组织中胶原纤维间距增大,紧密度降低,同时牛蹄皮剪切力、硬度、咀嚼性和黏聚性逐渐减小,蒸煮损失逐渐增大。90~95℃加热50~60 min时牛蹄皮胶原蛋白溶解性大,组织松散,剪切力、硬度和咀嚼性均较低,牛蹄皮嫩度较好,该研究可为牛蹄皮加热类菜肴的工业化生产提供科学理论指导。
The effects of heating temperature and time on the connective tissue properties and tenderness of bovine hoof skin were studied to provide technical support and theoretical basis for the comprehensive utilization of bovine hoof.The cattle hoof skin was used as materials,which were heated respectively at 75,80,85,90 and 95℃for 30,40,50,60 and 70 min to analyze the changes of collagen content and thermal solubility of bovine hoof skin during heating process.The changes in the microstructure of the hoof skin were observed and the shear force,cooking loss,texture characteristics were determined.The study showed that with the prolongation of heating time and temperature,the soluble collagen content and collagen solubility were gradually increased(P<0.05),while the insoluble collagen content was decreased as a whole.Meanwhile,the collagen fiber spacing showed an increase,and the tightness exhibited a decrease.Also,the values of shearing force,hardness,chewiness and cohesiveness were gradually reduced,and the cooking loss was gradually increased.The results indicated that,when heated at 90-95℃for 50-60 min,the bovine hoof skin featured high solubility,loose tissue,low shearing force,hardness and chewiness,which resulted in good tenderness.Therefore,this study provides scientific theoretical guidance for the industrial production of bovine hoof skin hot dishes.
作者
何龙
韩玲
余群力
朱跃明
林梁
曹晖
HE Long;HAN Ling;YU Qunli;ZHU Yueming;LIN Liang;CAO Hui(Food Science and Engineering Department of Gansu Agricultural University,Lanzhou 730070,China;Zhangye Wan Grass and Livestock Industry Technology Development Co.,Ltd.,Zhangye 734000,China;Gansu Qilian Pastoral Food Industry Co.,Ltd.,Zhangye 734000,China;Shaanxi Qinbao Animal Husbandry Development Co.,Ltd.,Baoji 721000,China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2019年第23期170-175,共6页
Food and Fermentation Industries
基金
甘肃省重点研发计划项目(18YF1NA075)
国家现代农业产业(肉牛牦牛)技术体系建设专项(CARS-37)
甘肃农业大学优秀博士学位论文培育项目(2017003)
关键词
加热温度
加热时间
牛蹄皮
结缔组织特性
嫩度
heating temperature
heating time
bovine skin
connective tissue properties
tenderness
