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Nutritional profile of food yeast kluyveromyces fragilis biomass grown on whey

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Abstract

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 ω-3 and ω-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. Bvitamins in the biomass were present as expected, but folic acid and pyridoxine were present in high concentration.

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Authors and Affiliations

  1. Department of Biological Chemistry, Indian Association for the Cultivation of Science, 700 032, Jadavpur, Calcutta, India

    Deepen Paul, Rupak Mukhopadhyay, Bishnu P. Chatterjee & Arun K. Guha

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  1. Deepen Paul
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  2. Rupak Mukhopadhyay
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  3. Bishnu P. Chatterjee
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  4. Arun K. Guha
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Paul, D., Mukhopadhyay, R., Chatterjee, B.P. et al. Nutritional profile of food yeast kluyveromyces fragilis biomass grown on whey. Appl Biochem Biotechnol 97, 209–218 (2002). https://doi.org/10.1385/ABAB:97:3:209

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  • DOI: https://doi.org/10.1385/ABAB:97:3:209

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