The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Chen Qing - One of the best experts on this subject based on the ideXlab platform.
-
Analysis of the fatty acid from Aspergillus Niger xj fermentation broth
Food engineering, 2012Co-Authors: Chen QingAbstract:Objective:To study chemical constituents of fatty acid from A Aspergillus Niger xj fermentation broth.Methods:After being cultured in PDA liquid medium,the fatty acid from Aspergillus Niger xj was extracted by petroleum ether from the fermentation broth,separated by silica gel column chromatography method,eluted with petroleum ether and ethyl acetate,then separated and analysed by GC-MS.Results:4 compounds were separated and identified.Conclusion The major fatty acids in Aspergillus Niger xj fermentation broth including octadecadienoic acid,octadecenoic acid,pentadecanoic acid and octadecanoic acid.
Golla Narasimha - One of the best experts on this subject based on the ideXlab platform.
-
Production and optimization of phytase by Aspergillus Niger
2015Co-Authors: Hya, A. Sridevi, P. Suvarnalatha Devi, Golla NarasimhaAbstract:The present article implies an extracellular phytase production by Aspergillus Niger under submerged and solid fermentation. Physical and Chemical conditions tested for optimal production of phytase using the single variable mode optimization technique. A considerable higher phytase production was obtained using rice bran as solid substrate (17.8 U/ml & 28.6 U/ml) at pH 5, on 4th day of incubation at 300C. It has been inferred from the results that glucose as best carbon source for phytase production with 29.5 U/ml (SMF) and 42.4U/ml (SSF) activity and ammonium nitrate as good nitrogen source enhanced production of phytase from Aspergillus Niger upto 31.8 U/ml in SMF and 45.2 U/ml in SSF.
-
Production of cellulase enzyme by mutant fungal strain Aspergillus Niger in submerged fermentation
BioTechnology: An Indian Journal, 2011Co-Authors: M.reddi Pradeep, Golla NarasimhaAbstract:Production of enzymes is a growing field of biotechnology especially related to industrially important enzymes. The present studywas carried out to investigate the production of cellulase enzyme from UV mutated Aspergillus Niger grown on rice bran under submerged fermentation. The fungal strain Aspergillus Niger was subjected to UV irradiation and the successive mutants showed enhanced cellulase production. Particularly, the mutant fungal strain Aspergillus Niger GNUV3 was efficient and the activities of carboxy methyl cellulase, filter paperase and â-glucosidase were improved by 4.7, 4.4 and 3.8 ÂÂ fold, respectively when compared to the wild type strain.
C W Parkins - One of the best experts on this subject based on the ideXlab platform.
-
calcium oxalate crystal deposition in necrotizing otomycosis caused by Aspergillus Niger
Modern Pathology, 1993Co-Authors: M M Landry, C W ParkinsAbstract:Numerous calcium oxalate crystals were present within fruiting heads of Aspergillus Niger and among necrotic debris in a case of bilateral invasive otomycosis occurring in a diabetic female with end stage renal disease. This is the first report of in vivo calcium oxalate crystal deposition associated with Aspergillus Niger at this anatomic site. The presence of localized oxalate crystals within necrotic tissue from the external auditory canal is presumptive of otomycosis caused by Aspergillus Niger, and may serve as a diagnostic clue to the etiologic agent before histologic demonstration of hyphae or growth in culture.
M M Landry - One of the best experts on this subject based on the ideXlab platform.
-
calcium oxalate crystal deposition in necrotizing otomycosis caused by Aspergillus Niger
Modern Pathology, 1993Co-Authors: M M Landry, C W ParkinsAbstract:Numerous calcium oxalate crystals were present within fruiting heads of Aspergillus Niger and among necrotic debris in a case of bilateral invasive otomycosis occurring in a diabetic female with end stage renal disease. This is the first report of in vivo calcium oxalate crystal deposition associated with Aspergillus Niger at this anatomic site. The presence of localized oxalate crystals within necrotic tissue from the external auditory canal is presumptive of otomycosis caused by Aspergillus Niger, and may serve as a diagnostic clue to the etiologic agent before histologic demonstration of hyphae or growth in culture.
Cheng Xian-hao - One of the best experts on this subject based on the ideXlab platform.
-
Properties of An Aspergillus Niger Producing Xylanase of Solid State Fermentation
Biotechnology(faisalabad), 2005Co-Authors: Cheng Xian-haoAbstract:Objectives:To selective breed Aspergillus Niger for Xylanase production, and optimize it's culturing condition, study it's enzyme properties. Methods: Aspergillus Niger producing Xylanase were picked out with transparence circle method. Effect of some factors as follows on enzyme production was studied: the ratio of corn cob to wheat bran, culturing temperature, culturing time, adding nitrogen sources. Effect of temperature, pH, metal ions on enzyme activity were tested. Enzyme stability in different temperature was tested.Results: An Aspergillus Niger producing Xylanase was separated from nature soil. Cultivation conditions for the production of Xylanase in solid state were investigated. The Xylanase activity of the culture was 5500u/g dry koji. The optimal pH and temperature of the enzyme activity were 4.8 and 45℃. The activity of the enzyme was absent rapidly. above 45℃. The activity was activated by Mg~ 2+ and Zn 2+ and inhibited by Mn~ 2+ , Cu ~2+ and Hg~ 2+ . Conclusion: An Aspergillus Niger producing Xylanase was screened. Its culture condition was simple.
