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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Co-Culture of Filamentous Feed-Grade Fungi and Microalgae as an Alternative to Increase Feeding Value of Ethanol Coproducts

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Author(s):
Rodrigues Reis, Cristiano E. [1, 2] ; D'Otaviano, Larissa Ogero [1, 2] ; Rajendran, Aravindan [2] ; Hu, Bo [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Chem Engn, Engn Sch Lorena, BR-12602810 Sao Paulo - Brazil
[2] Univ Minnesota, Dept Bioprod & Biosyst Engn, Minneapolis, MN 55455 - USA
Total Affiliations: 2
Document type: Journal article
Source: FERMENTATION-BASEL; v. 4, n. 4 DEC 2018.
Web of Science Citations: 1
Abstract

Distiller's grains, an important commodity in the feed and food chains, are currently underdosed in rations due to several factors, mainly nutrient imbalance. This study aimed to increase the linoleic acid content in distiller's grains and decrease the excess nutrients in stillage water by the use of an artificial lichen, composed of fungi, algae, and a supporting matrix. A maximum concentration of 46.25% of linoleic acid in distiller's grains was achieved with a combination of Mucor indicus and Chlorella vulgaris using corn-to-ethanol whole stillage as substrate. Microbial hydrolytic enzymes during fermentation were able to decrease the solids in whole stillage. Nitrogen depletion by microalgal uptake causes lipid-formation stress to Mucor indicus cells, increasing linoleic acid production to about 49% of the total lipids, potentially decreasing costs in the animal feed. The culture supernatant can potentially be recycled as process water to the ethanol fermentation tank, and enhanced distiller's grains can replace animal-specific diets. This would reduce exogenous enzyme use and supplementation of unsaturated fatty acids from other sources. (AU)

FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants
FAPESP's process: 17/12908-8 - Fungal cultivation on sugarcane vinasse and development of a platform for high-value products in the ethanol industry
Grantee:Cristiano Eduardo Rodrigues Reis
Support Opportunities: Scholarships in Brazil - Post-Doctoral