Nutritional profile of food yeast Kluyveromyces fragilis biomass grown on whey.
Biomass of food yeast Kluyveromyces fragilis (MTCC 188) grown on deproteinized whey supplemented with 0.8% diammonium hydrogen phosphate and 10 ppm indole-3-acetic acid, had a crude protein content of 37%. The true protein content based on nitrogen fractionation procedure was 28.1%. Total nucleic acid content was 4.82%. This amount does not appear to be toxicologically offensive. Crude fiber, ash, and lipid content of K.fragilis dry cells were found to be 4.9%, 16%, and 7.8%, respectively. Essential fatty acids of both omega-3 and omega-6 series were found present in the fat of the yeast and represented 21.5% of the total fatty acids. All the essential amino acids were present in the proteins of K. fragilis; however, sulfur containing amino acids were found in lower amounts. Calculated protein scores indicate moderate biological value. B vitamins in the biomass were present as expected, but folic acid and pyridoxine were present in high concentration.
Paul
Deepen
D
Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta.
Mukhopadhyay
Rupak
R
Chatterjee
Bishnu P
BP
Guha
Arun K
AK
D000596:Amino Acids / Q000378:metabolism; D050260:Carbohydrate Metabolism; D005227:Fatty Acids / Q000378:metabolism; D005285:Fermentation; D007210:Indoleacetic Acids / Q000494:pharmacology*; D007716:Kluyveromyces / Q000737:chemistry* / Q000378:metabolism*; D008041:Linoleic Acids / Q000378:metabolism; D008042:Linolenic Acids / Q000378:metabolism; D008894:Milk Proteins / Q000737:chemistry*; D009584:Nitrogen / Q000378:metabolism; D010710:Phosphates / Q000494:pharmacology*; D000067816:Whey Proteins
D000596:Amino Acids; D005227:Fatty Acids; D007210:Indoleacetic Acids; D008041:Linoleic Acids; D008042:Linolenic Acids; D008894:Milk Proteins; D010710:Phosphates; D000067816:Whey Proteins; C024788:ammonium phosphate; C030737:indoleacetic acid; D009584:Nitrogen