Yak milk whey protein denaturation and casein micelle disaggregation/aggregation at different pH and temperature
dc.contributor.author | Wang, Lifeng | |
dc.contributor.author | Ma, Ying | |
dc.contributor.author | Cui, Jie | |
dc.contributor.author | Oyeyinka, Samson | |
dc.contributor.author | Cheng, Jinju | |
dc.contributor.author | He, Shenghua | |
dc.date.accessioned | 2018-06-01T11:54:59Z | |
dc.date.available | 2018-06-01T11:54:59Z | |
dc.date.issued | 2017-04-04 | |
dc.description.abstract | At the natural pH of yak milk (pH 6.6), a low level (<30%) of k-casein (k-CN) was found in the serum phase after heating at 95 oC for 30 min, indicating that as much as 70% of the b-lactoglobulin (b-Lg) and k-CN complexes is associated with the micelle colloidal particles. The b-Lg and k-CN levels increased from 13.2% and 2.6% at pH 6.0 to 35.2% and 60.1% at pH 7.0, respectively, when yak milk was heated at 95 oC for 30 min. At pH 6.0-6.4, the denatured whey proteins were associated with the caseins in the colloidal phase, resulting in milk gelation upon heating. The distribution of b-Lg and k-CN complexes increased in the serum phase, demonstrated by the increasing levels of both b-Lg and k-CN with increasing pH; at high pH (6.6-7.0), large proportions of b-Lg and a-lactalbumin were lost, presumably forming complexes in the colloidal phase. | en_US |
dc.identifier.uri | http://hdl.handle.net/123456789/336 | |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Yak milk | en_US |
dc.subject | protein denaturation | en_US |
dc.subject | Casein micelle | en_US |
dc.subject | pH | en_US |
dc.subject | Temperature | en_US |
dc.title | Yak milk whey protein denaturation and casein micelle disaggregation/aggregation at different pH and temperature | en_US |
dc.type | Article | en_US |
Files
Original bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- Yak milk whey protein denaturation and casein micelle.pdf
- Size:
- 1.07 MB
- Format:
- Adobe Portable Document Format
- Description:
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 1.69 KB
- Format:
- Item-specific license agreed upon to submission
- Description: