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Type: Artigo
Title: Biosurfactants production using permeate from whey ultrafiltration and bioproduct recovery by membrane separation process
Author: Decesaro, Andressa
Machado, Thaís Strieder
Cappellaro, Ângela Carolina
Rempel, Alan
Margarites, Ana Cláudia
Reinehr, Christian Oliveira
Eberlin, Marcos Nogueira
Zampieri, Davila
Thomé, Antônio
Colla, Luciane Maria
Abstract: The management of whey is a challenge for dairy products where the volume produced is remarkable. This problem is minimized through membrane separation processes (MSP) to obtain whey protein concentrate, which has high added value. However, a permeate effluent stream is still generated that is composed of lactose, vitamins, and minerals, which can serve as raw material for the production of biotechnological compounds. Thus, this study aimed to produce biosurfactants using the permeate from whey ultrafiltration as part of the culture media of the bioprocess, to recover the biosurfactant produced using MSP, and to identify the biocompound. The production was carried out using Bacillus methylotrophicus and Bacillus pumilus. The variables nitrogen source (urea or ammonium sulfate), nitrogen source concentration (0.5% or 1.0%), inducer (soybean oil or biodiesel), inducer concentration (1% or 2%), and the addition of micronutrients (with our without) were studied using a fractional factorial experimental design 25-1IV. In the fermentation processes, it was possible to verify the biosurfactant production through the reduction of surface tension, obtaining a minimum value of 35.07 mN/m for B. methylotrophicus and 26.02 mN/m for B. pumilus. Recovery via MSP was an efficient strategy for biosurfactant purification, which was concentrated in the fraction of the retentate. We produced a high-value-added biocompound identified as surfactin, valuing the permeate residue from whey ultrafiltration
Subject: Microfiltração
Country: Reino Unido
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1002/jsde.12399
Date Issue: 2020
Appears in Collections:IQ - Artigos e Outros Documentos

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