Yeast extract is the common name for yeast autolysates, that is, concentrations of yeast cells that are allowed to die and break up, so that the yeasts' digestive enzymes break their proteins down into simpler compounds.
Beer yeast and wine yeast are used to convert sugar into alcohol and, in the case of beer and champagne, bubbles.
Brewer's yeast and nutritional yeast, for example, are sold as nutritional supplements, and Australians are fond of yeast extracts--like Vegemite, Marmite, and Promite--which they spread like peanut butter on bread.
Nutritional yeast is very similar to brewer's yeast, which is also used as a nutritional supplement and is made from the same strain of yeast.
Yeastextract is the common name for yeast autolysates, that is, concentrations of yeast cells that are allowed to die and break up, so that the yeasts' digestive enzymes break their proteins down into simpler compounds.
Yeast has also been used in the treatment of acute and chronic vaginitis, endocervicitis, etc. Thus, in vaginitis, a mixture of yeast and sugar solution is sometimes smeared over the vaginal walls, a douche being administered twelve hours later, and the treatment repeated every other day if necessary.
Yeastextracts, which closely resemble meat extract in colour, taste, and smell, are sold pure (Marmite), or mixed with meat extract; they have not the stimulating properties of meat extract, and may be distinguished chemically by their freedom from creatinine.
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