Utilization of Renewable Feedstocks for the Production of Sophorolipids by Native Yeasts from Brazilian Cerrado Biome

被引：6

作者：

Rocha, T. M. ^{[1
]}

Marcelino, P. R. F. ^{[1
]}

Munoz, S. S. ^{[1
]}

Ruiz, E. D. Diaz ^{[1
]}

Balbino, T. R. ^{[1
]}

Moraes, E. J. C. ^{[1
]}

Murbach, R. P. ^{[1
]}

Santos, J. C. ^{[2
]}

da Silva, S. S. ^{[1
]}

机构：

[1] Univ Sao Paulo EEL USP, Engn Sch Lorena, Dept Biotechnol, Bioproc & Sustainable Prod Lab, BR-12602810 Lorena, SP, Brazil

[2] Univ Sao Paulo EEL USP, Engn Sch Lorena, Dept Biotechnol, Proc Simulat Lab,BiopolymersLorena, BR-12602810 Lorena, SP, Brazil

来源：

BIOENERGY RESEARCH | 2023年 / 16卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

Sophorolipids; Renewable feedstocks; Agroindustry byproducts; Factorial design; Biorefinery; BOMBICOLA ATCC 22214; STARMERELLA-BOMBICOLA; GLYCOLIPID BIOSURFACTANTS; RICE BRAN; OIL; QUANTIFICATION; RHAMNOLIPIDS; BAGASSE; LIPIDS;

D O I：

10.1007/s12155-023-10597-4

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

One of the main constraints of sophorolipid (SL) microbial production is the substrate-associated costs and the lower productivity compared to synthetic surfactants. Nevertheless, SLs have found their potential in multiple markets, including agriculture due to their pesticide and plant-growth-promoting effects. In this sense, this study has aimed in evaluating potential SLs-producing Brazilian native strains of Starmerella bombicola isolated from different biomes, considering their potential of assimilating household residual cooking oil (HCO), which represents a renewable feedstock to aid the issues regarding raw material expenditures. The highest SL production (6.2 g/L) was obtained with S. bombicola Y-6419 which was isolated from the Brazilian Cerrado biome. To analyze the viability of using rice bran aqueous hydrolysate (RBH) as an alternative nutrients source, it was implemented a 2(2) factorial design, thereby, the concentration of HCO (g/L) and the supplementation of RBH (% v/v) were evaluated as manipulated variables; as a response, SL production (g/L) was quantified. The RBH showed promising utilization as an elicitor of SLs production by S. bombicola and the final SL titer comprised 51 g/L, which represents an augmentation of approximately ninefold compared to the medium without RBH. SLs were characterized for their physical-chemical properties and their chemical structures were confirmed by HPLC-MS, TLC, and FTIR. Thus, the utilization of agroindustry byproducts and a renewable lipophilic carbon source exhibited marked potential in the production of biosurfactants by the native S. bombicola strain which enables a step towards the consolidation of the bioprocess in modern biorefineries.

引用

页码：1956 / 1972

页数：17