World Journal of Microbiology and Biotechnology

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Characterization of a secreted cholesterol oxidase from Rhodococcus sp.GKI (CIP 105335)
World Journal of Microbiology and Biotechnology - Tập 15 - Trang 579-585 - 1999
A. Elalami, J. Kreit, A. Filali-Maltouf, J. Boudrant, P. Germain
Extracellular cholesterol oxidase (COX) (EC 1.1.3.6) was produced by Rhodococcus sp. GK1 cells grown in a defined mineral salt medium containing a mixture of phytosterols (sitosterol, campesterol, stigmasterol) as the sole source of carbon and energy. In the same time, the sterols acted as enzyme inducers. The medium was enriched with yeast extract in order to stimulate enzyme secretion. COX was p...... hiện toàn bộ
Biologically active microbial compounds as useful agents in agriculture
World Journal of Microbiology and Biotechnology - Tập 8 - Trang 111-114 - 1992
D. Gröger
Antioxidative properties and inhibitory effect of Bifidobacterium adolescentis on melanogenesis
World Journal of Microbiology and Biotechnology - Tập 28 - Trang 2903-2912 - 2012
Huey-Chun Huang, Tsong-Min Chang
Melanin is a dark pigment produced by melanocytes. Tyrosinase is a key enzyme which catalyzes the rate-limiting step of melanogenesis. However, accumulation of melanin leads to various skin hyperpigmentation disorders. To find a novel skin-whitening agent, the antioxidant capacity of Bifidobacterium adolescentis culture filtrate and inhibitory effect on melanogenesis were investigated. The antioxi...... hiện toàn bộ
Towards industrial biological hydrogen production: a review
World Journal of Microbiology and Biotechnology - Tập 40 - Trang 1-37 - 2023
G. M. Teke, B Anye Cho, C. E. Bosman, Z. Mapholi, D. Zhang, R. W. M. Pott
Increased production of renewable energy sources is becoming increasingly needed. Amidst other strategies, one promising technology that could help achieve this goal is biological hydrogen production. This technology uses micro-organisms to convert organic matter into hydrogen gas, a clean and versatile fuel that can be used in a wide range of applications. While biohydrogen production is in its e...... hiện toàn bộ
A novel enterocin T1 with anti-Pseudomonas activity produced by Enterococcus faecium T1 from Chinese Tibet cheese
World Journal of Microbiology and Biotechnology - Tập 32 - Trang 1-9 - 2016
Hui Liu, Lanwei Zhang, Huaxi Yi, Xue Han, Wei Gao, Chunliang Chi, Wei Song, Haiying Li, Chunguang Liu
An enterocin-producing Enterococcus faecium T1 was isolated from Chinese Tibet cheese. The enterocin was purified by SP-Sepharose and reversed phase HPLC. It was identified as unique from other reported bacteriocins based on molecular weight (4629 Da) and amino acid compositions; therefore it was subsequently named enterocin T1. Enterocin T1 was stable at 80–100 °C and over a wide pH range, pH 3.0...... hiện toàn bộ
Poly(vinylferrocene)–poly(ethylene glycol) glutamate oxidase electrode for determination of L-glutamate in commercial soy sauces
World Journal of Microbiology and Biotechnology - Tập 19 - Trang 479-485 - 2003
P. Na Nakorn, M. Suphantharika, S. Udomsopagit, W. Surareungchai
An amperometric L-glutamate oxidase (GLOD) electrode based on a multilayer of polymer films was developed for the high selective determination of L-glutamate. The multilayer film consisted of three layers as the following configuration i.e., inner membrane of electropolymerized 1,3-diaminobenzene, middle layer of L-GLOD entrapped in photopolymerized poly(vinylferrocene)–poly(ethylene glycol) hydro...... hiện toàn bộ
Antifouling potential of the marine microalga Dunaliella salina
World Journal of Microbiology and Biotechnology - Tập 30 - Trang 2899-2905 - 2014
Min Gao, Fengchao Li, Rongguo Su, Ke Wang, Xuzhao Li, Wei Lu
Marine organisms have usually been viewed as sources of environmentally friendly compounds with antifouling activity. We performed a series of operations to investigate the antifouling potential of the marine microalga Dunaliella salina. For the ethyl acetate crude extract, the antialgal activity was significant, and the EC50 value against Skeletonema costatum was 58.9 μg ml−1. The isolated purifi...... hiện toàn bộ
Survival of Salmonella enteritidis and Listeria monocytogenes on salad vegetables
World Journal of Microbiology and Biotechnology - Tập 14 - Trang 383-387 - 1998
K. Kakiomenou, C. Tassou, G.-J. Nychas
The influence of initial head-spaces of air – 4.9% CO2/2.1% O2/93% N2 and 5% CO2/5.2% O2/89.8% N2 – on Salmonella enteritidis and Listeria monocytogenes, and on microbial association with shredded carrots and lettuce was studied at 4 °C. Both these pathogens survived but did not grow in any vegetable regardless of the packaging system used. Total viable count, lactic acid bacteria and pseudomonads...... hiện toàn bộ
Anti-tumour components of the culture filtrates from Tricholoma sp.
World Journal of Microbiology and Biotechnology - Tập 11 - Trang 486-490 - 1995
F. Liu, V. E. C. Ooi, S. T. Chang
The anti-tumour component (Fraction A) found in the culture filtrates of a local mushroom, Tricholoma sp. (strain STC20-T1), was purified using DEAE-cellulose ion exchange chromatography and Sepharose CL-4B gel filtration. Of its two purified sub-fractions, A-1 and A-2, only the latter showed anti-tumor activity. When Fraction A-2 was treated with cetyltrimethylammonium hydroxide and chloroform/bu...... hiện toàn bộ
A Paecilomyces fumosoroseus mutant over-producing chitinase displays enhanced virulence against Bemisia tabaci
World Journal of Microbiology and Biotechnology - Tập 20 - Trang 207-210 - 2004
Ismael Hernández-Torres, Magdalena Iracheta, Luis J. Galán-Wong, Carlos Hernández, Juan Contreras, Mark Jackson, Benito Pereyra-Alférez
A Paecilomyces fumosoroseus strain was mutagenized by u.v. Among 200 colonies, one mutant (M84), showed a large and stable chitin hydrolysis-halo. Glucose consumption and biomass production were similar for M84 and the parental strain. Chitinase was inducible by chitin and repressed by glucose in both strains but, when they were grown on minimal medium plus colloidal chitin as sole carbon source, ...... hiện toàn bộ
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