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The effect of major ingradients (Water, Soybean oil, Na-caseinate, Soybean protein isolate, Corn starch. Lactic acid and disodium phosphate) on the textural properties of imitation cheese were studied by response surface methodology and evaluated by contour diagram. The hardness of imitation cheese was directly influenced by the contents of water, oil and Na-caseinate and also affected by the interactions between water and oil and corn starch and lactic acid/phosphate. The adhesiveness was strongly affected by the interactions between caseinate and lactic acid/phosphate, SPI and corn starch and corn starch and lactic acid/phosphate. The springiness was directly influenced by the contents of oil, caseinate and lactic acid/phosphate, and also affected by the interactions between SPI and lactic acid/phosphate and corn starch and lactic acid/phosphate. The melting property was strongly influenced by the contents and interactions of lactic acid/phosphate.
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