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Bioproduction and extraction optimization of citric acid from Aspergillus niger by rotating drum type solid-state bioreactor.

Dhillon, Gurpreet Singh; Brar, Satinder Kaur; Kaur, Surinder; Verma, Mausam P. (2013). Bioproduction and extraction optimization of citric acid from Aspergillus niger by rotating drum type solid-state bioreactor. Industrial Crops and Products , vol. 41 . p. 78-84. DOI: 10.1016/j.indcrop.2012.04.001.

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Résumé

Solid-state citric acid fermentation was conducted in a 12-L rotating drum type bioreactor. The effect of inducers, ethanol and methanol were studied on citric acid bioproduction by . Aspergillus niger NRRL 567 cultivated on apple pomace as a solid-substrate. Optimum conditions achieved for higher citric acid bioproduction (220.6. ±. 13.9. g/kg dry solids, DS) were 3% (v/v) methanol, intermittent agitation of 1. h after every 12. h at 2. rpm and 1. vvm of aeration rate and 120. h incubation time. The response surface optimization proved effective for higher citric acid extraction from fermented solid-substrate. Higher citric acid extraction of 294.19. g/kg DS was achieved at optimum conditions: extraction time of 20. min, agitation rate of 200. rpm and extractant volume of 15. ml by response surface methodology.

Type de document: Article
Mots-clés libres: apple pomace; aspergillus niger; citric acid; extraction optimization; solid-state fermentation
Centre: Centre Eau Terre Environnement
Date de dépôt: 09 avr. 2018 20:40
Dernière modification: 20 avr. 2018 20:01
URI: http://espace.inrs.ca/id/eprint/4047

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