食品科学2017，Vol.38Issue(7)：17-22,6.DOI:10.7506/spkx1002-6630-201707004
T-2毒素对凡纳滨对虾肌肉品质特性和自溶作用强度的影响
Effect of T-2 Toxin on Muscle Quality Characteristics and Autolysis in Litopenaeus vannamei
摘要
Abstract
Varied doses of T-2 toxin (T-2),namely 0.0 (control),0.5,1.2,2.4,4.8,12.2 mg/kg,were orally administered to the white shrimp Litopenaeus vannamei for 20 consecutive days.The quality characteristics and autolysis of shrimp muscle were investigated by sensory evaluation,physicochemical analysis and microscopic observation.The results indicated that T-2 exposure significantly affect the color of shrimp muscle.T-2 exposure at low dose could result in a significant increase in hardness and chewiness (P ＜ 0.05),but a significant decrease in hardness,elasticity,cohesiveness,glueyness and chewiness at high dose (P ＜ 0.05).The cooking loss of shrimp muscle first rose and then decrease.Microscopic examination revealed loosening and fragmentation of muscle fibers and wider gaps between muscle fibers,suggesting a decline of shrimp muscle quality.Increasing T-2 exposure resulted in a decrease in amino nitrogen content and an increase in soluble solid content.Soluble protein in shrimp muscle hydrolysate increased first and then decreased (P ＜ 0.05).Myofibril length showed a significant decline with the increase in T-2 (P ＜ 0.05).Electron microscopy confirmed fracture and dissolution of myofibrils,suggesting increased autolysis.关键词
T-2毒素/凡纳滨对虾/肌肉/品质特性/自溶作用Key words
T-2 toxin/Litopenaeus vannamei/muscle/quality characteristics/autolysis分类
农业科技引用本文复制引用
邓义佳,王雅玲,莫冰,孙力军,王润东,徐德峰,叶日英,梁光明,何婉莹..T-2毒素对凡纳滨对虾肌肉品质特性和自溶作用强度的影响[J].食品科学,2017,38(7):17-22,6.基金项目
国家自然科学基金面上项目(31171634 （）
31371777) （）
广东省科技计划项目(2014B020205006) （2014B020205006）
广东省海洋与渔业局项目(粤财农[2015]115号) （粤财农[2015]115号）
