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- W2141530218 abstract "Abstract: Egg yolk contamination of egg whites continues to be a serious problem in the egg industry. The ability of egg whites to form stable and voluminous foams is greatly inhibited by yolk contamination, even at very low levels, between 0.01% and 0.2% w/w yolk in white. Experiments were conducted to determine if Mucor miehei lipase could regenerate the functional properties of yolk‐contaminated egg whites. Lipase from M. miehei and colipase from porcine pancreas were added to yolk‐contaminated (0.2%, w/w) egg white samples to hydrolyze triglycerides originating from egg yolk. Enzymatic hydrolysis of triacylglycerols was confirmed using thin‐layer chromatography. Treatment of yolk‐contaminated samples with lipase and colipase yielded significant ( P < 0.05) improvements in a number of the functional properties, including the final foam volume, foam capacity, and foaming power. These functional properties showed complete restoration to control levels. However, foam stability and foam drainage levels were not statistically different from yolk‐contaminated samples that had not been enzymatically treated. Enzyme‐treated yolk‐contaminated egg whites were also tested in angel food cakes. Enzyme‐treated, yolk‐contaminated egg whites performed similarly to non‐yolk‐contaminated control, and much better than yolk‐contaminated sample in angel food cakes. The results show that most negative effects of yolk contamination can be reversed by treatment with Mucor miehei lipase and colipase. Practical Application: The negative effects of egg yolk contamination in egg whites on the functional properties foam volume, foam capacity, and foaming power can be reversed by treatment with Mucor miehei lipase and porcine colipase. Improvement is also seen in angel food cakes prepared with contaminated egg whites treated with lipase and colipase." @default.
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- W2141530218 date "2011-04-13" @default.
- W2141530218 modified "2023-10-16" @default.
- W2141530218 title "Use of Mucor miehei Lipase to Improve Functional Properties of Yolk-Contaminated Egg Whites" @default.
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- W2141530218 doi "https://doi.org/10.1111/j.1750-3841.2011.02138.x" @default.
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