Abstract
The inhibitory effect of ice structuring protein (ISP) on the quality deterioration of quick-frozen pork patties subjected to multiple freeze-thaw (F-T) cycles was investigated. The inhibitory effect of ISP on patty quality deterioration was obvious after five F-T cycles (P < 0.05). The hardness and springiness of patties with 0.20% ISP were 3.84% and 10.61% higher than those of patties without ISP, and the thawing loss of patties with 0.20% ISP was 43.64% lower than that of patties without ISP (P < 0.05). In addition, ISP effectively restrained moisture migration and destruction of pork patty microstructure during F-T cycles. More importantly, thiobarbituric acid reactive substance levels and carbonyl contents in the patties with 0.20% ISP were 25% and 32% lower than those in the control group (no significant difference with patties with 0.30% ISP) after five F-T cycles. Therefore, these results illustrated the potential benefits of ISP in meat products.
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