Industrial waste utilization for low-cost production of raw material oil through microbial fermentation.
Appl Biochem Biotechnol
; 169(1): 110-22, 2013 Jan.
Article
em En
| MEDLINE
| ID: mdl-23151967
ABSTRACT
In view of ever-growing demand of biodiesel, there is an urgent need to look for inexpensive and promising renewable raw material oils for its production. In this context, the aim of this study was to evaluate the potential use of industrial wastes for low-cost production of oils through microbial fermentation. Among the strains tested, Yarrowia lipolytica grew best and produced highest lipid when grown on decanter effluent from palm oil mill. When crude glycerol by-product from a biodiesel plant was added into the effluent as a co-substrate, Y. lipolytica produced a higher biomass of 3.21 g/L and a higher amount of lipid of 2.21 g/L which was 68 % of the dry weight. The scale up and process improvement in a 5-L bioreactor increased the biomass and lipid up to 5.53 and 2.81 g/L, respectively. A semi-continuous mode of operation was an effective mode for biomass enhancement while a fed-batch mode was effective for lipid enhancement. These yeast lipids have potential to be used as biodiesel feedstocks because of their similar fatty acid composition to that of plant oil.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Microbiologia Industrial
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Óleos
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Eliminação de Resíduos
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Yarrowia
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Resíduos Industriais
Tipo de estudo:
Evaluation_studies
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Health_economic_evaluation
Idioma:
En
Revista:
Appl Biochem Biotechnol
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Tailândia