A Simple Biorefinery Concept to Produce 2G-Lactic Acid from Sugar Beet Pulp (SBP): A High-Value Target Approach to Valorize a Waste Stream

被引：26
作者：
de Oliveira, Regiane Alves [1 ,2 ,5 ]
Schneider, Roland [2 ]
Lunelli, Betania Hoss [3 ]
Vaz Rossell, Carlos Eduardo [4 ]
Maciel Filho, Rubens [1 ]
Venus, Joachim [2 ]
机构：
[1] Univ Estadual Campinas, Sch Chem Engn, Lab Optimizat Design & Adv Proc Control, UNICAMP, Ave Albert Einstein 500, BR-3083852 Campinas, Brazil
[2] Leibniz Inst Agr Engn & Bioecon eV ATB, Dept Bioengn, Max Eyth Allee 100, D-14469 Potsdam, Germany
[3] Pontificia Univ Catolica Campinas PUC Campinas, Fac Quim, Ctr Ciencias Exatas Ambientais & Tecnologias, Rua Prof Doutor Euryclides Jesus Zerbini 1516, BR-1087571 Campinas, Brazil
[4] Univ Estadual Campinas, Interdisciplinary Ctr Energy Planning NIPE, UNICAMP, Rua Cora Coralina 330, BR-13083896 Campinas, Brazil
[5] Tech Univ Denmark, Novo Nordisk Fdn Ctr Biosustainabil, DK-2800 Lyngby, Denmark
来源：
MOLECULES | 2020年 / 25卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
lactic acid; sugar beet pulp; biorefinery; second-generation; bipolar membrane electrodialysis; LACTIC-ACID; FERMENTATION BROTH; BACILLUS-COAGULANS; RECOVERY; FRACTIONATION; HYDROLYSATE; SEPARATION; INDUSTRY;
D O I：
10.3390/molecules25092113
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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(-1)h(-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.
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页数：17
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