کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7593721 | 1492117 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reassociation of dissociated caseins upon acidification of heated pH-adjusted skim milk
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Milk was heated at different pH (pH 6.5-7.1) and temperatures (20-120 °C/10 min). This resulted in different levels of casein and denatured whey proteins to be distributed between the colloidal and serum phases. The milks were subsequently acidified and the distribution of protein between colloidal and serum was monitored at different pH. On acidification to pH 5.4, the serum phase caseins and denatured whey proteins partially reassociated with the caseins, although a complex behaviour was observed at â¼pH 5.4 where additional casein dissociation occurred in some samples. At pH below 5.4 the caseins and denatured whey proteins rapidly aggregated. No separate aggregation of κ-casein/denatured whey protein complexes or κ-casein depleted micelles was observed. The earlier gelation of milks heated at higher pH was likely to be due to the destabilisation of the entire milk protein system rather than a preferential aggregation of the serum phase proteins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 174, 1 May 2015, Pages 339-347
Journal: Food Chemistry - Volume 174, 1 May 2015, Pages 339-347
نویسندگان
Skelte G. Anema, Yuming Li,