Yeast (synonym: saccharomycetes, blastomycetes) are immobile unicellular, chlorophyll-free microorganisms belonging to the class of marsupial fungi. They reproduce by budding and division. They develop well in acid media (pH = 5.5-6.0) at a temperature of 25-28 ° in both aerobic and relatively anaerobic conditions. Yeast and their spores are unstable to high temperatures and die when boiled.
Diseases caused by yeast-like fungi are denoted by the term blastomycosis (see).
For food purposes, dry yeast, pressed and liquid. Yeast contains high-grade proteins , ergosterol (provitamin D) and vitamins of group B. To enrich the food with proteins and vitamins, yeast can be added.
Yeast belongs to perishable products ; therefore, the storage period of pressed yeast at a temperature from 0 ° to 4 ° is 10 days, and liquid beer yeast is 6-8 hours.Go
Therapeutic use of yeast . Most often, for therapeutic purposes, brewer's and baker's yeasts are used in their natural form or in the form of special preparations (liquid, dry yeast, hepatitis, etc.).
When ingested, liquid yeast stimulates the secretion of gastric, pancreatic and intestinal glands, improves the absorption of nutrients. Dry yeast is less active. Yeast preparations increase the body's resistance to infections.
Yeasts are shown in cases of general nutritional disorders, convalescent after serious diseases, furunculosis , peptic ulcer , gastritis and enterocolitis, neuralgia, neuritis, etc. Yeast is prescribed for deficiencies in the body of B vitamins.
The daily dose (average) of fresh yeast is 100 g, dry - 25 g, yeast paste - 50 g, liquid - 500 g. The dose is established depending on tolerance. Side effects: belching, feeling of heaviness in the epigastric region, flatulence, diarrhea .
Contraindications: diseases in which it is necessary to limit protein and purine bases ( uremia , exchange polyarthritis).