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Title: The effect of pretreatments on surfactin production from potato process effluent by Bacillus subtilis

Abstract

Pretreatment of low-solids (LS) potato process effluent was tested for potential to increase surfactin yield. Pretreatments included heat, removal of starch particulates, and acid hydrolysis. Elimination of contaminating vegetative cells was necessary for surfactin production. After autoclaving, 0.40 g/L of surfactin was produced from the effluent in 72 h, versus 0.24 g/L in the purified potato starch control. However, surfactin yields per carbon consumed were 76% lower from process effluent. Removal of starch particulates had little effect on the culture. Acid hydrolysis decreased growth and surfactant production, except 0.5 wt% acid, which increased the yield by 25% over untreated effluent.

Authors:
; ;
Publication Date:
Research Org.:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
758109
Report Number(s):
INEEL/CON-99-01278
TRN: AH200021%%172
DOE Contract Number:  
AC07-99ID13727
Resource Type:
Conference
Resource Relation:
Conference: 22nd Symposium on Biotechnology for Fuels and Chemicals, Gatlinburg, TN (US), 05/07/2000--05/11/2000; Other Information: PBD: 7 May 2000
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 09 BIOMASS FUELS; FOOD INDUSTRY; POTATOES; INDUSTRIAL WASTES; HEAT TREATMENTS; ACID HYDROLYSIS; STARCH; REMOVAL; SURFACTANTS; BIOSYNTHESIS; BACILLUS SUBTILIS; BIOSURFACTANT; SURFACTIN; ALTERNATE FEEDSTOCK; ENHANCED OIL RECOVERY

Citation Formats

D. N. Thompson, S. L. Fox, and G. A. Bala. The effect of pretreatments on surfactin production from potato process effluent by Bacillus subtilis. United States: N. p., 2000. Web.
D. N. Thompson, S. L. Fox, & G. A. Bala. The effect of pretreatments on surfactin production from potato process effluent by Bacillus subtilis. United States.
D. N. Thompson, S. L. Fox, and G. A. Bala. Sun . "The effect of pretreatments on surfactin production from potato process effluent by Bacillus subtilis". United States. https://www.osti.gov/servlets/purl/758109.
@article{osti_758109,
title = {The effect of pretreatments on surfactin production from potato process effluent by Bacillus subtilis},
author = {D. N. Thompson and S. L. Fox and G. A. Bala},
abstractNote = {Pretreatment of low-solids (LS) potato process effluent was tested for potential to increase surfactin yield. Pretreatments included heat, removal of starch particulates, and acid hydrolysis. Elimination of contaminating vegetative cells was necessary for surfactin production. After autoclaving, 0.40 g/L of surfactin was produced from the effluent in 72 h, versus 0.24 g/L in the purified potato starch control. However, surfactin yields per carbon consumed were 76% lower from process effluent. Removal of starch particulates had little effect on the culture. Acid hydrolysis decreased growth and surfactant production, except 0.5 wt% acid, which increased the yield by 25% over untreated effluent.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}

Conference:
Other availability
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