Structural changes of calcium-depleted casein micelle suspensions studied by SAXS

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136274 - 136274

Published: Jan. 1, 2025

Language: Английский

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Goat Milk Exhibits a Higher Degree of Protein Oxidation and Aggregation than Cow Milk During Cold Storage

Foods, Journal Year: 2025, Volume and Issue: 14(5), P. 852 - 852

Published: March 1, 2025

Due to their markedly distinct protein compositions and structures, goat milk cow display substantially different characteristics. In this study, the quality composition of were studied after being refrigerated at 4 °C for 7 days, with a particular focus on oxidation aggregation states. The results revealed that alongside increases in acidity, microbial colony count, hydrolysis, there was significant change state beginning second day. This characterized by increased turbidity, an elevated centrifugal sedimentation rate, right-shifted particle size distribution. After seven days refrigeration, rate from 0.53% 0.97%, whereas rose 0.41% 0.58%. degree significantly greater compared milk. Additionally, both lipids exhibited substantial oxidation, more pronounced than malondialdehyde (MDA) content 0.047 μg/mL 0.241 0.058 0.178 suggest prone which further reduced its stability. Therefore, storage transportation dairy products before processing, it is essential not only monitor sanitary conditions but also effectively control enhance processing.

Language: Английский

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Dynamic Properties of β-Casein Fibril Adsorption Layers at the Air–Water Interface

Polymers, Journal Year: 2025, Volume and Issue: 17(8), P. 1075 - 1075

Published: April 16, 2025

Although the formation of layers fibrillar aggregates at liquid–liquid and liquid–gas interfaces can significantly increase stability disperse systems, like foams emulsions, any information on their structure properties is rather limited. In present work, surface adsorption fibrils intrinsically disordered β-casein are investigated. For unpurified dispersions this protein, dynamic elasticity proved to be close values for native protein solutions. This behavior typical globular proteins. However, previously studied another κ-casein, do not demonstrate similarity. The contribution becomes noticeable only after purification from impurities high activity. increases up 48 mN/m two cycles, i.e., 4 times higher than steady-state same bulk concentrations.

Language: Английский

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Current concepts of casein and casein micelle structure, interactions, and dynamics

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 63 - 98

Published: Jan. 1, 2024

Language: Английский

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