Production of yeast protein by cultivation of different species in enriched whey by molasses to animal and poultry nutrition.
2008
Zamani, Farshad | Lame`, Hassan | Mahadavi A`deli, Hamid Reza | Hemmat Zadeh, Farhid | Talebi, Mohammad A`li
Yeast were the first microorganisms known, the best studied and generally best accepted by consumers, Yeast are rarely toxic or pathogenic and can be used in human and animal diets. Although their protein content rarely exceeds 60%, their concentration in essential amino acids such as lysine, tryptophan and threonine is satisfactory. This research was carried out to produce single cell protein(SCP) in whey and whey with different concentration of molasses (0, 10, 20, 30 and 40%) by Kluyeromydes Feragilis, Candida Pesdutropicalis, Sacchromyces Cerevisi and Candida Intermedia yeasts. For this purpose 1ml of 10-3 dilute of each grown yeast in sabouroud dextrose broth was added to each experimental culture and then the culture were incubated and cell culture, lactose determination according to growth time were carried out and biomass were measured finally. The results showed that Kluyeromydes Feragilis yeast could have grown , consuming the lactose present in culture and producing considerable amount of biomass than others yeasts. By increasing the molasses concentration, increased the amount of biomass (P0.05). The amount of biomass produced were 16.2, 18.7, 19.2, 19.7 and 19.5 g/lit in 0, 10, 20, 30 and 40% of molasses.
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