The effect of heat, transglutaminase and combination of heat and transglutaminase treatments on the solubility of films prepared from goat milk casein, goat milk whey proteins and whole goat milk proteins was investigated. Goat milk casein films were less soluble when treated with transglutaminase and combination of heat with transglutaminase compare with heat-treated caseins alone. Heat treatment was more effective at decreasing the solubility of whey protein films. SDS-PAGE patterns demonstrated that goat milk caseins were better cross-linked by transglutaminase, whereas whey proteins were better cross-linked by heat. The extent of cross-linking was further enhanced when a combination of heat and transglutaminase was used.

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