PRODUCTION OF MICROBIAL LIPIDS FROM SWEET POTATO BRANCHES FOR APPLICATION IN FOOD AND BICOMBUSTIBLES

Authors

DOI:

https://doi.org/10.20873/pibic_2024_21103

Abstract

Microbial lipids are oils that have compositions similar to vegetable oils, produced from microorganisms such as yeasts, fungi, bacteria, which have the ability to accumulate large amounts of fat in their cells, especially in the form of triacylglycerols. Thus, the present work aimed at the production of microbial lipid from sweet potato branches for application in food and biofuels. For this, the acid hydrolysis of sweet potato branches with sulfuric acid at 2.5% (m/v), 22% solids load (m/m) was performed at 121 °C for 30 min to obtain the hydrolyzed sweet potato branches rich in carbohydrates. Fermentation was carried out at 28 °C, 200 rpm, for 120 h in orbital shaker incubator, and lipid extraction and gravimetric quantification by the BLIGH-DYER method (1959).  The amount of sugars (glucose, xylose, cellobiose and arabinose) obtained from acid hydrolysis was 11.68 g/L, 6.24 g/L, 1.20 g/L and 0.463 g/L respectively. L. starkeyi fermented the medium reaching a total of 20.91 g/L of final cell biomass and 15.88% lipid. Thus, the sweet potato branches have potential for their use as a source of carbon for lipid production.

Published

2025-04-30

How to Cite

Feitosa da Silva, T., Brito de Oliveira Silva, M., Eustáquio Lacerda, G., da Cunha Abreu Xavier, M., & Andres Villalba de Morales, S. (2025). PRODUCTION OF MICROBIAL LIPIDS FROM SWEET POTATO BRANCHES FOR APPLICATION IN FOOD AND BICOMBUSTIBLES. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 12(1), 1–15. https://doi.org/10.20873/pibic_2024_21103

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