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Simultaneous phytase production and rock phosphate solubilization by Aspergillus niger grown on dry olive wastes
Department of Chemical Engineering, Faculty of Sciences, University of Granada, Spain.
Department of Chemical Engineering, Faculty of Sciences, University of Granada, c/Fuentenueva s/n, 18071 Granada, Spain.
Department of Chemical Engineering, Faculty of Sciences, University of Granada, c/Fuentenueva s/n, 18071 Granada, Spain.
Department of Chemical Engineering, Faculty of Sciences, University of Granada, c/Fuentenueva s/n, 18071 Granada, Spain.
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2007 (English)In: Industrial crops and products (Print), ISSN 0926-6690, E-ISSN 1872-633X, Vol. 26, no 3, 332-336 p.Article in journal (Refereed) Published
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Abstract [en]

Dry olive waste (DOW), an agro-industrial material derived from the two-phase-manufacture of olive oil, was used as a substrate for phytase production by Aspergillus niger. A series of experiments were performed in conditions of solid-state fermentation in the presence of rock phosphate. Both enzyme production and phosphate solubilization depended on water medium content, type of nitrogen source, inoculum size and the presence and initial concentration of phosphate in the medium. It was found that at optimized process conditions (moisture 70%; corn steep liquor as a nitrogen source; inoculum size of 3-4 ml; presence of slow release phosphate), the filamentous fungal culture was able to produce 58 U phytase/g dry substrate and 31 mg soluble phosphate per flask.

Place, publisher, year, edition, pages
2007. Vol. 26, no 3, 332-336 p.
Keyword [en]
Agro-waste, Aspergillus niger, Fermentation, Phosphate solubilization, Phytase, Byproducts, Nitrogen, Plants (botany), Solubility, Enzymes, angiosperm, crop residue, fungus, phosphate, solubilization, waste, Zea mays, agricultural production, oil, substrate
Identifiers
URN: urn:nbn:se:mdh:diva-31740DOI: 10.1016/j.indcrop.2007.04.003ISI: 000249908200011Scopus ID: 2-s2.0-34548223584OAI: oai:DiVA.org:mdh-31740DiVA: diva2:933752
Available from: 2016-06-07 Created: 2016-06-07 Last updated: 2016-11-01Bibliographically approved

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