Composition and nutritive value of single-cell protein (SCP)

Effects of spent brewer’s yeast and biological β-glucans on selected parameters of lipid metabolism in blood and liver in rats

“…Their use in human nutrition is limited by purine compounds and nucleic acids, and their uncontrolled high intake could cause elevation of the concentration of uric acid in blood and increase the risk of arthritis. In the 1970's of 20 th doses of nucleic acid in the diet that do not pose a problem were established at the level of 2 g/day, which corresponds to 30-50 g intake of dry yeast/day (Schulz and Oslage, 1976).…”

Performance of laying hens on diets containing Eurolysine bacterial protein or Pekilo protein

“…When Eurolysine was used as protein in a digestibility trial with pigs the ME value obtained was 11.1 MJ/kg DM (NÄSI 1982 (SCHULZ and OSLAGE 1976). Gas chromatography gave a methionine content of only 0.6 g/16 g N. The manufacturer gives a value of 1.37 g. Methionine is the primary limiting amino acid in poultry diets and improved performance has been achieved by LD-methionine supplementation in microbial protein feeding (WALDROUP and HAZEN 1975, SCHULZ and OSLAGE 1976, WHITTEMORE et al 1978, KIISKINEN 1979. In diets for pigs the digestibilities of most amino acids were lower with Eurolysine as protein supplement than with soybean meal (NÄSI and HUIDA 1982).…”

Yeast: World’s Finest Chef

“…Brewer's yeast may serve as an excellent health promoter for fish culture as even when administered for relatively long periods is able to enhance immune responses as well as growth of various fish species, without causing immunosuppression [94,95]. Furthermore, the relative high levels of nucleic acid nitrogen present (mostly in the form of RNA) that in humans and most monogastric animals can became toxic if taken in excess, as the capacity of excretion of the uric acid formed is limited [96], in fish does not happen due to their very active liver uricase [97].…”