A high yield xylanase fungus Aspergillus niger M1 was isolated and its solid state fermentation conditions were studied. The optimal culture conditions were as follows:corncob meal:wheat bran=7∶3,0.6% of ammonium sulfate,dry medium:water=1∶2.0,temperature 30℃ and cultivation for 84 hours. The xylanase activity was as high as 3 689 μmol·min -1 ·g -1 in dry culture.
A aminoacylase producing strain Aspergillus oryzae WO607 was obtained by screening 13 Aspergillus oryzae. Solid state fermentation of Aspergillus oryzae WO607 for production of aminoacylase was carried out in a system consisting of wheat bran 7.0 g; soybean meal 3.0 g;
从13株米曲霉菌株中筛选到一株产氨基酰化酶活力较高的米曲霉(Aspergillus oryzae)WO607,以米曲霉WO607为生产菌固态发酵生产氨基酰化酶,较适的培养基组成和培养条件为:麸皮7.0 g,豆饼粉3.0 g,蛋白胨0.3 g,水11 mL,pH值6.5,发酵温度28℃,发酵周期约48 h.
The production of acidic β-mannanase was studied by solid state fermentation with the strain Aspergillus usamii YL-01-78.The optimal koji plate fermentation conditions were as follows: the ratio of water to dry medium 1.4:1, initial pH natural and inoculum size 10%(related to dry medium). With these conditions, the acidic β-mannanase activity reached 3183IU/g dry medium at 31℃ for 72h by adding water and turning koji.
Comparison of the Properties, Components and Application in Clarifying Frult Juices of pectic Enzymes bstween Aspergillus usamii B_1 and Its Mutant Strain B_(1-12)
The addition of Caco3 in medium was necessary condition for the accumulation of L-malic acid. At the optimal cultural conditions, the Aspergillus flavus HA5800 could accumulate 80-90g/L L-malic acid from 100-120g/L sugar in shake-flask operation.
The cell extract showed activity against Candida albicans, Aspergillus niger, Trichoderma viridae, Fusarium moniliforme and Alternaria brassicicola.
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Like wise, compounds 26 and 28 exerted potent in vitro antifungal activity against Cryptococcus neoformans, Aspergillus niger and Aspergillus flavus whereas 30 showed very good activity than the standard drug against all the tested organisms.
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Screening and Characterization of the High-Cellulase-Producing Strain Aspergillus glaucus XC9
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A mildew strain with high cellulase activity was isolated from mildewy maize cob and classified as Aspergillus glaucus XC9 by morphological and 18S rRNA gene sequence analyses.
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In order to reduce the total enzyme consumption in high-solids static hydrolysis of nonwashed steam-exploded willowSalix caprea by mixed cellulase ofTrichoderma reesei + Aspergillus foetidus, two different approaches were proposed.
This paper describes a quick and easy qualitative test and the paper chromatographic qualitative test of malicci cid. The experimental processes and methods of the direct fermentation of L-malic Acid by Aspergillus Species will be Summarized. The ASP. Weetii, ASP. Niger, ASP. flavus. and ASP. oryzae have been isolated from Soil. The C~6_0~0-ray, 5-FU and high Temperatuve have been used respectivly or combinedly To treat Some of the Species in the experiment. We have obtained some mutants from the wild...
This paper describes a quick and easy qualitative test and the paper chro- matographic qualitative test of malicci cid. The experimental processes and methods of the direct fermentation of L-malie Acid by Aspergillus Species will be Summarized. The ASP. Weetii, ASP. Niger, ASP. flavus, and ASP. oryzae have been isolated from Soil. The C_0~(60)-ray, 5-FU and high Temper- atuve have been used respectivly or combinedly To treat Some of the Species in the experiment. We have obtained some mutants from the...
The amylase enzyme activities of stock culture of Aspergillus niger are 7 unit.After the treatment of Co~(60)-γ ray) the mutant of high enzyme activities is selected, the enzyme activities of which are 10.5 unit, that is, there is a increase by 33% in comparison with stock culture.Appendix: dose, dese fractionation, lethal rate, and mutation rate.