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：25

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.

引用

页数：17