Influence of Growth and High Mould Concentration on the Pressure Drop in Solid State Fermentations
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- 作者：Irmene Ortiz ; Elba Villegas ; Richard Auria ; Sergio Revah
- 关键词：polyphenol esterase ; Aspergillus niger ; partial purification ; characterization ; polyphenol oxidase inhibition
- 刊名：Process Biochemistry
- 出版年：1995
- 出版时间：1995
- 年：1995
- 卷：30
- 期：8
- 页码：751-756
- 全文大小：457 K
文摘
Aspergillus niger was grown on Amberlite IRA-900 imbibed with a solution containing high concentrations of sucrose (Si = 100, 200, 300 and 400 g/litre) in static aerated fermentors. Growth was followed in dry biomass, biomass protein, CO2 production and pressure drop (DP). The DP allowed the monitoring of germination, vegetative growth, limitation and the onset of sporulation for the four concentrations of sucrose studied. Concentrations up to 103 mg dry biomass/g dry support were obtained with Si = 400 g/litre and these reduced the relative intrinsic permeability to 0·0125. Under this condition the mould occupies 34 % of the free space. DP increase was related to CO2 production.