Evaluation of Processing Conditions and Hydrocolloid Addition on Functional Properties of Aquafaba

被引:16
作者
Crawford, Kaelyn [1 ]
Tyl, Catrin [2 ]
Kerr, William [1 ]
机构
[1] Univ Georgia, Dept Food Sci & Technol, Athens, GA 30602 USA
[2] Norwegian Univ Life Sci, Fac Chem Biotechnol & Food Sci, N-1432 As, Norway
关键词
aquafaba; foams; food processing; physical properties; EGG-WHITE; XANTHAN GUM; PROTEIN; EMULSIONS; STABILITY;
D O I
10.3390/foods12040775
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Aquafaba, the cooking water from chickpeas, could replace animal-derived ingredients such as egg whites in systems that require the stabilization of an oil or gas phase. However, little is known about how processing methods and additives affect its functional properties. In this study, aquafaba was prepared via boiling or pressure-cooking at water-to-seed (WSR) ratios of 5:1, 4:1 and 3:1. The effects of preparation method and pH adjustment on viscosity, protein content, solubility and profile were evaluated. Samples were further analyzed for foaming capacity/stability (FC/FS) and emulsifying activity/stability index (EAI/ESI). Foams were also prepared in combination with xanthan gum or hydroxypropyl methylcellulose (HPMC). Solubility was lowest near pH 4 and not affected by cooking method and protein profile was not affected by method or ratio. Samples with pH 3 had high EAI and FS, but low ESI and FC. WSR did not significantly affect interfacial properties. Xanthan gum had a greater effect than HPMC on viscosity and prevented foam liquid drainage for 24 h. While the preparation method affects aquafaba properties, subsequent pH adjustment is of greater relevance for interfacial properties. Foam volumes can be maximized and foam drainage limited by appropriate choice of hydrocolloids and addition levels.
引用
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页数:18
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