Related Experiment Video
Updated: May 7, 2026
05:22
Preparation of Matcha Fresh Noodles with Stable Color using Embedding Method and Microwave Treatment
Published on: July 26, 2024
Interactions between tea catechins and casein micelles and their impact on renneting functionality.
Sanaz Haratifar1, Milena Corredig
1Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
Food Chemistry
|September 24, 2013
Summary
Green tea catechins, like epigallocatechin-gallate (EGCG), bind to milk casein micelles. This interaction alters milk
Area of Science:
- Food Science
- Dairy Chemistry
- Biochemistry
Background:
- Tea catechins are known to interact with milk proteins.
- Casein micelles are the primary protein structures in milk, crucial for dairy processing.
- Understanding these interactions is vital for developing functional dairy products.
Purpose of the Study:
- To investigate the association between tea polyphenols, specifically epigallocatechin-gallate (EGCG), and casein micelles.
- To determine the impact of EGCG-casein micelle complex formation on the renneting properties of skim milk.
Main Methods:
- Quantification of epigallocatechin-gallate (EGCG) binding to casein micelles using High-Performance Liquid Chromatography (HPLC).
- Assessment of the effects of EGCG-casein micelle interactions on the primary and secondary stages of rennet-induced milk gelation.
Main Results:
- Epigallocatechin-gallate (EGCG) forms complexes with casein micelles.
- The formation of these complexes significantly affects the rennet-induced gelation of skim milk.
- The observed effects on gelation were dependent on the concentration of EGCG.
Conclusions:
- The binding of tea polyphenols to casein micelles alters their processing functionality.
- Further research is needed to fully understand these interactions before utilizing milk as a delivery system for bioactive compounds.
- This study highlights the importance of considering polyphenol-protein interactions in dairy product development.
Related Concept Videos
01:30Micelles
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
01:29Microbes in Food Production
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...