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

Authors

DOI:

https://doi.org/10.20873/pibic_2024_21095

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.

Author Biographies

Marciel Brito de Oliveira Silva, Universidade Federal do Tocantins

Reviewed, corrected and suggested improvements to the text.

Gabriela Eustáquio Lacerda, Universidade Federal do Tocantins

Guided and followed the development of the research.

Sergio Andres Villalba de Morales, Universidade Federal do Tocantins

Contributed to the original idea and objectives of the study

Michelle da Cunha Abreu Xavier, Universidade Federal do Tocantins

Contributed to the original idea and objectives of the study

Published

2025-10-20

Versions

How to Cite

Feitosa da Silva, T., Oliveira Silva, M. B. de, Eustáquio Lacerda, G., Andres Villalba de Morales, S., & da Cunha Abreu Xavier, M. (2025). PRODUCTION OF MICROBIAL LIPIDS FROM SWEET POTATO BRANCHES FOR APPLICATION IN FOOD AND BICOMBUSTIBLES. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 12(6), 112–125. https://doi.org/10.20873/pibic_2024_21095

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