Chemistry and Technology of Yoghurt Fermentation
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Beschreibung
This Brief reviews the chemistry behind the production of yoghurt through acidification of milk. It quantifies the changes in physical and chemical properties of yoghurt during fermentation with microbial organisms (such as Lactobacillus bulgaricus and Streptococcus thermophilus). It has been found that this symbiosis has an optimal development at a temperature of ca. 45°C with the transformation of lactose into lactic acid and small amounts of acetaldehyde, diacetyl and volatile acids. This Brief explains the chemical and physical results of the fermentation process, such as precipitation of proteins and the acid coagulation of milk with a clot formation in the final semi-solid mass. The Brief sheds light on the accomplishments of the fermenting organisms: they are responsible for the biochemical reactions of carbohydrate metabolism, proteolysis, lipolysis and flavour production in the process of yoghurt production. It also briefly reviews formulations and food additives used in the modern yoghurt producing industry.
Reviews the chemistry of yoghurt production from milk Explains the processes and biochemical reactions involved in the fermentation process and their chemical and physical consequences: from the carbohydrate metabolism, over proteolysis and lipolysis to flavour production Sheds light on the fascinating performance of fermenting organisms in yoghurt production Includes supplementary material: sn.pub/extras
Autor*in
Ettore Baglio
Themen in »Chemistry and Technology of Yoghurt Fermentation«
Acetaldehyde, diacetyl and volatile acids Caseins Fermented food Food additives Food design Homolactic fermentation Lactic acid bacteria Yoghurt fermentation Yoghurt flavor enhancers