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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.)

Impact of oxygen supply on surfactin biosynthesis using brewery waste as substrate

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Author(s):
Nazareth, Talita Correa [1] ; Zanutto, Conrado Planas [2, 1] ; Maass, Danielle [2] ; Ulson de Souza, Antonio Augusto [1] ; Guelli Ulson de Souza, Selene Maria de Arruda [1]
Total Authors: 5
Affiliation:
[1] Fed Univ Santa Catarina UFSC, Dept Chem & Food Engn EQA, BR-88040900 Florianopolis, SC - Brazil
[2] Fed Univ Sao Paulo UNIFESP, Inst Sci & Technol ICT, BR-12231280 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 9, n. 4 AUG 2021.
Web of Science Citations: 0
Abstract

This work reports surfactin production by B. subtilis ATCC 6051 in a stirred tank bioreactor, where trub was used as a carbon source. Trub is a residue from the brewing industry mainly composed of high-molar-mass proteins and reducing sugars, being a sustainable and low-cost substrate for bioprocess. Despite this, Trub has been little explored as a raw material in bioprocesses. Aiming to evaluate important factors in scale-up process, the impact of oxygen transfer coefficient (K(L)a) concerning volumetric productivity, and the effect of agitation (150-300 rpm) and aeration (0.5-1.5 vvm) on biosurfactant production by a Full Factorial design were evaluated. Only agitation presented a significant effect on surfactin concentration (SF), where SF was described by a linear regression model (R-2 = 0.99). The biosurfactant showed high stability in relation to variations in temperature and pH. In addition, the foam collecting was an efficient method in recovering and enrichment of the product. (AU)

FAPESP's process: 19/07659-4 - Valorization of metals present in metal-rich wastes by biomining process - BIOMETALVALUE
Grantee:Danielle Maass
Support Opportunities: Regular Research Grants