By-products from the biodiesel chain as a substrate to citric acid production by solid-state fermentation

被引:9
|
作者
Schneider, Manuella [1 ]
Zimmer, Gabriela F. [1 ]
Cremonese, Ezequiel B. [2 ]
Schneider, Rosana de C. de S. [2 ,3 ]
Corbellini, Valeriano A. [2 ,3 ]
机构
[1] Univ Santa Cruz do Sul, Ind Chem Course, Santa Cruz Do Sul, Brazil
[2] Univ Santa Cruz do Sul, Environm Technol Program, Santa Cruz Do Sul, Brazil
[3] Univ Santa Cruz do Sul, Dept Chem & Phys, Santa Cruz Do Sul, Brazil
关键词
Citric acid; by-products; Aspergillus niger; glycerine; tung cake; solid-state fermentation; SSF; biodiesel; ASPERGILLUS-NIGER; WASTE; OPTIMIZATION; GLUCOSAMINE; WATER; PERFORMANCE; EXTRACTION; CHITOSAN; CULTURE; LIPASES;
D O I
10.1177/0734242X14539788
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, we propose the use of tung cake for the production of organic acids, with an emphasis on citric acid by solid-state fermentation. We evaluated the conditions of production and the by-products from the biodiesel chain as raw materials involved in this bioprocess. First, we standardized the conditions of solid-state fermentation in tung cake with and without residual fat and with different concentrations of glycerine using the fungus Aspergillus niger. The solid-state fermentation process was monitored for 7 days considering the biomass growth and pH level. Citric acid production was determined by high-performance liquid chromatography. Fungal development was better in the crude tung cake, consisting of 20% glycerine. The highest citric acid yield was 350 g kg(-1) of biomass. Therefore, the solid-state fermentation of the tung cake with glycerine led to citric acid production using the Aspergillus niger fungus.
引用
收藏
页码:653 / 660
页数:8
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