The effect of myofibrillar/sarcoplasmic protein ratios on the properties of round scad muscle protein based film |
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Authors: | Anuchit Artharn Soottawat Benjakul Thummanoon Prodpran |
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Affiliation: | (1) Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand;(2) Department of Material Product Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand |
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Abstract: | The effect of the ratios of myofibrillar protein (MP) to sarcoplasmic protein (SP) from round scad (Decapterus maruadsi) muscle on the properties of the resulting films was investigated. Tensile strength (TS) of films decreased with increasing
SP content (p < 0.05). Films prepared from MP/SP ratio of 10:0 (w/w) exhibited the highest TS (p < 0.05). Elongation at break (EAB) of films prepared with SP content greater than 30% had the decreased EAB (p < 0.05). Water vapor permeability (WVP) of films increased when SP content increased up to 20% and decreased with increasing
SP content up to 30% (p < 0.05). Solubility of films decreased but protein solubility increased with increasing SP contents (p < 0.05). The a*-value and ΔE* of film increased with increasing SP content. Films with all MP/SP ratios exhibited the negligible transmission to the light
in UV range. Therefore, it is suggested that the type and ratio of proteins in fish muscle, both SP and MP, influenced the
properties of film from round scad muscle. Results suggested that the removal of sarcoplasmic protein from fish muscle by
thorough washing was an effective means to improve the mechanical properties as well as color of the fish muscle protein-based
film. |
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Keywords: | Fish muscle Sarcoplasmic protein Myofibrillar protein Film Properties |
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