PMID: 11902956Mar 21, 2002Paper

Effect of antioxidants, citrate, and cryoprotectants on protein denaturation and texture of frozen cod (Gadus morhua)

Journal of Agricultural and Food Chemistry
Farah Badii, Nazlin K Howell

Abstract

To investigate the role of antioxidants and cryoprotectants in minimizing protein denaturation in frozen lean fish, cod fillets were treated with either antioxidants (vitamin C (500 mg kg(-1)) or vitamin C (250 mg kg(-1)) + vitamin E (250 mg kg(-1))), antioxidants (vitamins C + E 250 mg kg(-1)each) with citrate (100 mg kg(-1)), cryoprotectants (4% (w/w) sucrose + 4% (w/w) sorbitol), or a mixture of antioxidants (vitamins C + E 250 mg kg(1)), citrate (100 mg kg(-1)), and cryoprotectants (sucrose 40 g kg(-1) + sorbitol 40 g kg(-1)). Untreated and treated fish samples were stored at -10 degrees C; cod fillets stored at -30 degrees C were used as a control. Stored frozen samples were analyzed at intervals for up to 210 days for changes in protein extractability, thermodynamic parameters (transition temperature T(m) and enthalpy DeltaH), structure by FT-Raman spectroscopy, and rheological properties by large and small deformation tests. Results indicated that protein denaturation and texture changes were minimized in the presence of cryoprotectants, as well as in the presence of antioxidants with citrate, antioxidants alone, or the mixture of antioxidants, citrate, and cryoprotectants. In the presence of increased formaldehyde level...Continue Reading

References

Jan 1, 1992·Critical Reviews in Food Science and Nutrition·F Shahidi, P K Wanasundara
Dec 20, 1999·Journal of Agricultural and Food Chemistry·M CarecheP Carmona
Dec 20, 1999·Journal of Agricultural and Food Chemistry·M OgawaS Nakai

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Citations

Apr 14, 2012·Journal of Proteomics·Pedro M RodriguesFlemming Jessen
Dec 15, 2018·Journal of the Science of Food and Agriculture·Qingzhu ZengBin Tian
Oct 10, 2020·Critical Reviews in Food Science and Nutrition·Wenyang ZhangDa-Wen Sun
Apr 30, 2021·Frontiers in Pharmacology·Raj Kumar TiwariShriya Agarwal
Mar 16, 2006·Journal of Agricultural and Food Chemistry·Supawan ThawornchinsombutEunice C Y Li-Chan

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