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Type: Artigo
Title: A simple biorefinery concept to produce 2G-lactic acid from sugar beet pulp (SBP): a high-value target approach to valorize a waste stream
Author: de Oliveira, Regiane Alves
Schneider, Roland
Lunelli, Betania Hoss
Vaz Rossell, Carlos Eduardo
Maciel Filho, Rubens
Venus, Joachim
Abstract: Lactic acid is a high-value molecule with a vast number of applications. Its production in the biorefineries model is a possibility for this sector to aggregate value to its production chain. Thus, this investigation presents a biorefinery model based on the traditional sugar beet industry proposing an approach to produce lactic acid from a waste stream. Sugar beet is used to produce sugar and ethanol, and the remaining pulp is sent to animal feed. Using Bacillus coagulans in a continuous fermentation, 2781.01 g of lactic acid was produced from 3916.91 g of sugars from hydrolyzed sugar beet pulp, with a maximum productivity of 18.06 g L−1h−1. Without interfering in the sugar production, ethanol, or lactic acid, it is also possible to produce pectin and phenolic compounds in the biorefinery. The lactic acid produced was purified by a bipolar membrane electrodialysis and the recovery reached 788.80 g/L with 98% w/w purity
Subject: Ácido lático
Country: Suiça
Editor: MDPI
Rights: Aberto
Identifier DOI: 10.3390/molecules25092113
Date Issue: 2020
Appears in Collections:FEQ - Artigos e Outros Documentos

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