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Emulsion stability, thermo‐rheology and quality characteristics of ground pork patties prepared with soy protein isolate and carrageenan
Author(s) -
Gao Xueqin,
Zhang Wangang,
Zhou Guanghong
Publication year - 2015
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7023
Subject(s) - chewiness , soy protein , food science , emulsion , rheology , carrageenan , ingredient , pea protein , chemistry , flavor , thermal stability , materials science , composite material , biochemistry , organic chemistry
BACKGROUND Plant proteins and polysaccharides are often utilised in ground meat products as meat binders, gelling agents, texture stabilisers or fat substitutes. The aim of this study was to investigate the effects of the incorporation of 57 g kg −1 soy protein isolate ( SPI ), 7 g kg −1 carrageenan ( CAR ) and SPI / CAR mixture on the quality of ground pork patties. RESULTS Ground pork patties with individual SPI and CAR or SPI / CAR mixture showed either retained or improved emulsion stability, physicochemical properties and dynamic rheology compared with control samples. Although there were no significant colour differences among treatments, samples with SPI / CAR mixture presented higher texture profile values for hardness and chewiness compared with other treatments ( P < 0.05). Patties with additives showed significantly lower cooking loss and better thermal emulsion stability than control samples owing to a lower release rate of water and fat ( P < 0.05). Compared with control samples or those with individual SPI and CAR , patties with SPI / CAR mixture formed a smoother and more continuous structure with a more compact protein matrix. CONCLUSION The results indicate that a mixture of SPI and CAR can be effectively used as a functional ingredient to improve the quality of ground pork patties. © 2014 Society of Chemical Industry