Fermentation is actually a process of enzymatic oxidation and the extent of fermentation determines the type of tea produced.
The most important reaction in tea fermentation is the oxidative chemical reaction induces the polyphenol oxidase on the polyphenols in tea leaves.
This subsequently causes the formation of different colors, aromas, and tastes in tea with various degree of fermentation. It also determines the tea shelf life. The longer the fermentation, the longer the tea can last.
Fermentation process creates a whole set of powerful antioxidants that are present in black tea. Black tea actually contains more complex polyphenols than green tea.
During fermentation also, amino acids also get converted into aldehydes, unsaturated liquids form aldehydes and lower acids. Oxidation of carotenoid to terpenoids, aldehydes and ketones and degradation of chlorophyll to brown and black pigments occurs.
The changes are reflected in the read amber color, reduced astringency and more complex flavor found in black tea beverages.
Some unique antioxidants called biflavonols, thearubigens, and theaflavins.
There are four main theaflavins common to black teas and a second group of minor theaflavins, including the isotheaflavins and neotheaflavins.
Fermentation process of tea
Just another blog about food processing and the important of food processing. It is about the conversion of raw materials or ingredients into the consumer product. Food processing also can be defined as the branch of manufacturing that starts with raw animal, vegetable, or marine materials and transforms them into intermediate foods stuff or edible products through the application of labor, machinery, energy, and scientific knowledge.
Wednesday, October 31, 2012
Most Popular Articles
-
The process of forming crystals from solution is known as crystallization. It is a physical method of separation to obtain the solid in a pu...
-
Fortification, Restoration and Enrichment of Foods Nutrient may be added to foods by restoration or fortification. Restoration is the repla...
-
Preserving food by various methods has been practiced throughout human history. Curing was originally developed to preserve certain foods by...
-
Expeller cocoa bitter is the fat prepared by the expeller process from cocoa beans singly or in combination with cocoa nib, cocoa mass, coco...
-
Yes, alcohol can indeed be made from dates using a traditional process known in some cultures as Dakhai. This method utilizes the natural s...