Results 201 to 210 of about 8,990 (229)

Biosynthesis of ochratoxins by Aspergillus ochraceus

Phytochemistry, 2001
Shaken liquid fermentation of an isolate of Aspergillus ochraceus showed growth-associated production of ochratoxins A and B, followed by production of a related polyketide diaporthin. Later, between 150 and 250 h, mellein accumulated transitorily.
J P, Harris, P G, Mantle
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Production of Ochratoxin A by Aspergillus Ochraceus

European Journal of Plant Pathology, 2004
The effects of growth conditions, trace metals, carbon and nitrogen source on ochratoxin A (OTA) production by Aspergillus ochraceus NRRL 3174 were investigated in submerged liquid culture medium. No correlation between biomass production and OTA synthesis was observed.
Ellen Mühlencoert, Ines Mayer, Michael W. Zapf, Rudi F. Vogel, Ludwig Niessen   +4 more
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Allergic Bronchopulmonary Aspergillosis Caused by Aspergillus ochraceus

American Journal of Clinical Pathology, 1978
A case with the characteristics of allergic bronchopulmonary aspergillosis is described. The species of Aspergillus involved, A. ochraceus, has not previously been found in this disorder. The organism had antigenic properties distinct from five other species of Aspergillus most commonly associated with allergic bronchopulmonary aspergillosis.
H S, Novey, I D, Wells
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Transformation of xanthohumol by Aspergillus ochraceus

Journal of Basic Microbiology, 2013
Microbial transformation of xanthohumol isolated from agro‐residue (spent hops), by Aspergillus ochraceus was investigated. A new aurone, (Z)‐2″‐(‐hydroxyisopropyl)‐dihydrofurano[4″,5″:6,7]‐3′,4′‐dihydroxy‐4‐methoxyaurone, was obtained as a main transformation product. Three minor metabolites were identified as 2″‐(‐hydroxyisopropyl)‐dihydrofurano[4″,5″
Tomasz, Tronina, Agnieszka, Bartmańska, Jarosław, Popłoński, Ewa, Huszcza   +3 more
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Biotransformation of Digitoxin by Aspergillus Ochraceus

Advanced Materials Research, 2011
Biotransformations of natural products have great potential for preparation of lead compounds. In this paper, the biotransformation of digitoxin (1) with Aspergillus ochraceus afforded two products, identified as digitoxigenin (2) and sarmentogenin (3) by HR-MS, 1H-NMR and 13C-NMR.
Yu Wan Fu, Hua Sun, Yan Jun Shen, Xi Chen, Min Wang   +4 more
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Biosynthesis of diaporthin and orthosporin by Aspergillus ochraceus

Phytochemistry, 2001
Diaporthin and orthosporin were characterised from the fungus Aspergillus ochraceus D2306. Diaporthin was identified by high-resolution electron impact mass spectrometry and 1H and 13C NMR spectroscopy, from which new spectroscopic assignments were made.
J P, Harris, P G, Mantle
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New Diketopiperazine Metabolites from the Sclerotia of Aspergillus ochraceus

Journal of Natural Products, 1992
Three new diketopiperazine-containing metabolites 1-3 have been isolated from the sclerotia of Aspergillus ochraceus (NRRL 3519) by chromatography on Sephadex LH-20 and reversed-phase hplc. The structures of these compounds were established using extensive high-field 1D and 2D nmr experiments. All three compounds cause moderate reduction in weight gain
F S, de Guzman, J B, Gloer, D T, Wicklow, P F, Dowd   +3 more
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Identifying novel allergens from a common indoor mould Aspergillus ochraceus

Journal of Proteomics, 2021
The increasing burden of respiratory disease is a rising concern in India. Although chronic colonisation is primarily caused by pathogenic fungi, the common environmental fungi also play an important role in developing sensitisation. This study aims to examine the allergenic potency of mycelial proteins of a common indoor fungus Aspergillus ochraceus ...
Sangeeta, Roy, Bodhisattwa, Saha, Swati, Gupta Bhattacharya   +2 more
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Preparations of Extracellular Proteinases from Aspergillus ochraceus 513 and Aspergillus alliaceus 7 dN1

Microbiology, 2002
Preparations of extracellular proteolytic enzymes with high anticoagulant activity resembling protein C activators were isolated from the culture liquids of Aspergillus ochraceus 513 and Aspergillus alliaceus 7 dN1 by precipitation with ammonium sulfate and subsequent purification from ammonium ions by gel filtration on a column with Sephadex G-25. The
B P, Batomunkueva, N S, Egorov
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Three New Indole Diketopiperazine Alkaloids from Aspergillus ochraceus

Chemistry & Biodiversity, 2018
Asperochramides A – D (1 – 4), a new natural product and three new indole diketopiperazine alkaloids, along with seven known analogs (5 – 11), were isolated from the ethyl acetate extract of Aspergillus ochraceus. Their structures were elucidated by extensive spectroscopic analyses, ECD calculation, and single‐crystal X‐ray diffraction analysis ...
Huiling, Wen, Xiaorui, Liu, Qing, Zhang, Yanfang, Deng, Yi, Zang, Jianping, Wang, Junjun, Liu, Qun, Zhou, Linzhen, Hu, Hucheng, Zhu, Chunmei, Chen, Yonghui, Zhang   +11 more
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