以持水力、盐溶性蛋白质、冻结速率、Ca2+-ATP酶活性和最大剪切力为指标,结合感官评分和组织切片,研究了不同温度(-18、-23、-28、-40℃和-50℃)冻结的南极磷虾的品质变化。实验结果表明:经过冻结后的南极磷虾持水力、盐溶性蛋白质、Ca2+-ATP酶活性、感官评分和最大剪切力都有下降,肌肉组织变化较明显,-18、-23℃和-28℃冻结后的南极磷虾品质变化较大,快速冻结(-40℃和-50℃)更适合保证南极磷虾的品质。

Effects of different freezing temperature(-18℃,-23℃,-28℃,-40℃ and-50℃) on the quality changes of Antarctic krill were researched by testing the indexes of water-holding capacity(WHC),salt-soluble protein,freezing rate,Ca2+-ATPase activity,cutting force,sensory evaluation and tissue section.WHC,salt-soluble protein,Ca2+-ATPase activity,sensory evaluation and cutting force all decreased,muscle tissue changed dramatically.The results indicated that the quality changed greatly when frozen at-18℃,-23℃ and-28℃.The quality of Antarctic krill maintained better at(-40℃ and-50℃).