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CHANGES IN PHYSIOCHEMICAL PROPERTIES OF MYOFIBRILLAR PROTEIN FROM SILVER CARP ( HYPOPHTHALMICHTHYS MOLLITRIX ) DURING HEAT TREATMENT
Author(s) -
PAN JINFENG,
SHEN HUIXING,
YOU JUAN,
LUO YONGKANG
Publication year - 2011
Publication title -
journal of food biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 47
eISSN - 1745-4514
pISSN - 0145-8884
DOI - 10.1111/j.1745-4514.2010.00431.x
Subject(s) - silver carp , hypophthalmichthys , myofibril , food science , turbidity , chemistry , differential scanning calorimetry , carp , denaturation (fissile materials) , freshwater fish , viscosity , organoleptic , lightness , biochemistry , materials science , nuclear chemistry , fish <actinopterygii> , biology , fishery , ecology , thermodynamics , composite material , physics , optics
Turbidity, lightness, viscosity and Ca 2+ ‐adenosine triphosphat ase activity of silver carp myofibrillar protein during heat treatment were investigated. Differential scanning calorimetry (DSC) method was taken to analyze the thermal properties of myofibrillar protein. Turbidity increased as temperature rose, and three peaks of change rate were observed at 48, 64 and 69C; lightness decreased gradually and peaks appeared at 48 and 60C; viscosity declined from 18 to 41C and reached the lowest value at 41C; Ca 2+ ‐ATPase activity decreased over range 20 to 31C and 35 to 45C and reduced to zero at 45C, with a slight increase from 31 to 35C; two endothermic peaks exhibited at 48.88 and 70.25C in DSC thermograms.PRACTICAL APPLICATIONS Silver carp is one of the main freshwater fish species in China and has been widely used as a raw material for many fish products. Heating plays a great role in lowering quantity of microbe and exerts great influences on organoleptic attributes of products. Research on changes in physicochemical properties of myofibrillar protein during heat treatment can help to understand the thermal denaturation of it and provide practical information for silver carp muscle processing, so as to promote the utilization of huge mount of freshwater fish resources in China.