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Current Opinion in Food Science
Vol. 2, 2015, Pages: 106–117

Lactic metabolism revisited: metabolism of lactic acid bacteria in food fermentations and food spoilage

Michael G Gänzle

University of Alberta, Department of Agricultural, Food and Nutritional Science, Edmonton, Canada.


Sensory properties, shelf life, and safety of a majority of fermented foods are determined by the metabolic activity of food fermenting lactic acid bacteria. This communication reviews major metabolic routes of lactic acid bacteria, and indicates how metabolism is influenced by the environmental conditions or manipulated for improved control of food fermentations. Emphasis is placed on homofermentative and heterofermentative metabolism of carbohydrates, organic acids, and the conversion of amino acids with major impact on food safety and quality. In addition to the role of lactic metabolism in food fermentations, their implications for food spoilage are discussed.

Graphical abstract


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