| [the influence of hydrocarbon and glucose medium on the fungi strains absidia coerulea (p 23) and penicillium spec. (m 49). i. a comparison of growth in shake and standing culture (author's transl)]. | | 1975 | 1243709 |
| [the influence on hydrocarbon medium in relation to glucose medium on the fungi strains absidia coerulea (p 23) and penicillium spec. (m 49). ii. a comparison of morphological structures (author's transl)]. | | 1975 | 1243710 |
| microbial transformations of steroids--iv. 6,7-dehydrogenation; a new class of fungal steroid transformation product. | microbial steroid dehydrogenation is quite common. the reaction seems to occur mainly in bacteria and usually results in hydrogen abstraction from positions c(1)-c(2) and/or c(4)-c(5) with occasional aromatisation of ring a. we have screened large numbers of fungal cultures for their ability to monohydroxylate steroids at unusual sites and in the course of our investigations we have identified seven fungal strains capable of dehydrogenating ring b of progesterone and androstenedione at positions ... | 1989 | 2770300 |
| microbial conversion of mevinolin. | about 3000 microorganisms (bacteria, actinomyces, zygomyces, deuteromyces) were screened for their capacity to convert mevinolin. absidia coerulea idr 705 was found to produce two hydroxylated derivatives of mevinolin, 2 and 3. compound 2 is a new transformation product while compound 3 was described as a chemical modification product of mevinolin. by combination of spectroscopic techniques, the structures of 2 and 3 were identified with beta,delta-dihydroxy-7-(1,2-dihydro-2-hydroxymethyl-6-meth ... | 1997 | 9360620 |
| shrimp chitin as substrate for fungal chitin deacetylase. | the fungal chitin deacetylases (cda) studied so far are able to perform heterogeneous enzymatic deacetylation on their solid substrate, but only to a limited extent. kinetic data show that about 5-10% of the n-acetyl glucosamine residues are deacetylated rapidly. thereafter enzymatic deacetylation is slow. in this study, chitin was exposed to various physical and chemical conditions such as heating, sonicating, grinding, derivatization and interaction with saccharides and presented as a substrat ... | 2001 | 11759681 |
| biotransformation--xxxiv. metabolism of testosterone esters in fungi cultures. | seven esters of testosterone: acetate, propionate, enanthate, caprate, undecanoate, isobutyrate and isocaproate (some of them are used as drugs) were transformed by microorganisms: absidia coerulea, acremonium roseum, aphanocladium album and rhodotorula mucilaginosa to obtain some information about their metabolism. it was observed that the presence and structure of the acyl group mainly influenced the degree of transformation. the first step of the reaction was probably hydrolysis of ester, fol ... | 1993 | 8664175 |
| purification and characterization of chitin deacetylase from absidia coerulea. | chitin deacetylase, which releases the acetyl groups of glycol chitin was purified from a fungus, absidia coerulea, and characterized. the enzyme was purified 516-fold to homogeneity by means of 65-80% ammonium sulfate precipitation followed by chromatography on butyl toyoperal-650m, gigapite (hydroxyapatite), and deae toyopearl-650m. it had an apparent molecular weight of 75 kda both on sodium dodecyl sulfate polyacrylamide gel electrophoresis and gel filtration chromatography, indicating that ... | 1995 | 7608108 |
| microbial synthesis of 1 beta- and 15 beta-hydroxylated bile acids. | lithocholic, deoxycholic, and cholic acids were incubated with the molds absidia coerulea bain (cbs 105.08, i), three strains of rhizoctonia solani kühn (cbs 130.14 (ii), cbs 341.36 (iii), cbs 325.47 (iv)), and penicillium species atcc 12556 (v). the products were analyzed by gas-liquid chromatography and partially characterized by gas-liquid chromatography-mass spectrometry. lithocholic acid was most extensively hydroxylated while cholic acid yielded only traces of hydroxylated metabolites. i, ... | 1981 | 7320633 |
| effects of puromycin aminonucleoside on protein synthesis in absidia coerulea. | | 1970 | 5452724 |
| [pulmonary mucormycosis caused by absidia coerulea in a patient with lung cancer]. | | 1988 | 3237478 |
| microbial transformation of ginsenoside-rg₁ by absidia coerulea and the reversal activity of the metabolites towards multi-drug resistant tumor cells. | biotransformation of ginsenoside-rg₁ (1) by the fungus absidia coerulea as 3.2462 yielded five metabolites (2-6). on the basis of spectroscopic data analyses, the metabolites were identified as ginsenoside-f₁ (2), 6α,12β-dihydroxydammar-3-one-20(s)-o-β-d-glucopyranoside (3), 3-oxo-20(s)-protopanaxatriol (4), 3-oxo-7β-hydroxy-20(s)-protopanaxatriol (5), and 3-oxo-7β,15α-dihydroxy-20(s)-protopanaxatriol (6), respectively. among them, 5 and 6 are new compounds. these results indicated that absidia ... | 2011 | 21946057 |
| efficient hydrolytic reaction of an acetate ester with fungal lipase in a liquid-liquid interface bioreactor (l-l ibr) using caco(3)-coated ballooned microsphere. | in a liquid-liquid interface bioreactor using a caco(3)-coated ballooned microsphere, 2-ethylhexyl acetate was efficiently hydrolyzed to 2-ethyl-1-hexanol with absidia coerulea nbrc 4423 compared with using talc-coated or non-coated ballooned microsphere. it was assumed that caco(3) brought about stabilization of lipase by ca(2+) and maintenance of medium ph. | 2011 | 21536495 |
| enantioselectivity of hydroxylation of racemic piperitone by fungi. | the biotransformation of racemic piperitone ((±)-1) was investigated using four strains of fungi selected in the screening procedure. the substrate was transformed by botrytis cinerea am235, absidia cylindrospora am336, absidia coerulea am93, and absidia glauca am177 into more polar metabolites. the transformation of racemic piperitone ((±)-1) catalyzed by b. cinerea am235 gave 7-hydroxypiperitone (2) as the only product. the biotransformation of (±)-1 by a. cylindrospora am336 afforded mixture ... | 2010 | 20872669 |
| hydroxylation of diosgenin by absidia coerulea. | microbial transformation of diosgenin (1) using absidia coerulea yielded five new polar metabolites, which were identified as (25r)-spirost-5-en-3 beta,7 beta,12 beta,25 alpha-tetrol (2), (25s)-spirost-5-en-3 beta,7 alpha,12 beta,25 beta-tetrol (3), (25s)-spirost-5-en-3 beta,7 beta,12 beta,25 beta-tetrol (4), (25r)-spirost-5-en-3 beta,7 alpha,12 beta,25 alpha-tetrol (5), and (25r)-spirost-5-en-3 beta,7 beta,12 beta,24 beta-tetrol (6). their structures were established on the basis of mass spectr ... | 2010 | 20420310 |
| oil removal from water using biomaterials. | a batch study was conducted to evaluate efficiencies of four types of biomaterials to remove oil from water. the oils used in the study were standard mineral oil, vegetable oil and cutting oil. two fungal biomasses of mucor rouxii and absidia coerulea along with chitosan and walnut shell media were the biomaterials used. the study was carried out with an initial oil concentration of 200mg/l for 6h. non-viable m. rouxii biomass was found to be more effective than a. coerulea biomass in removing o ... | 2010 | 20378341 |
| biotransformation of tetrahydro-alpha-santonins by absidia coerulea. | the fungus, absidia coerulea was employed to bioconvert tetrahydro-alpha-santonins, 1,2,4alpha,5alpha-tetrahydro-alpha-santonin (1), and its 4-epimer (2), from which 10 products (3-12) were obtained. furthermore, their structures were determined, based on their chemical and spectroscopic data analyses. among them, 3-5, 7, 9, 11 and 12 were observed to be seven new compounds. the reactions mainly involved in these bio-process included hydroxylation(s) (c-4, c-11, and c-1), reduction (c-3 ketone t ... | 2008 | 18415857 |
| decomposition of myceliar matrix and extraction of chitosan from gongronella butleri usdb 0201 and absidia coerulea atcc 14076. | free chitosan, 2 g/100g mycelia from gongronella butleri and 6.5 g/100g mycelia from absidia coerulea were isolated by 1m naoh at 45 degrees c for 13 h and 0.35 m acetic acid at 95 degrees c for 5 h. both myceliar matrixes did not break down under these conditions. however, myceliar matrix could be decomposed by treatment with 11 m naoh at 45 degrees c for 13 h and 0.35 m acetic acid at 95 degrees c for 5 h and then extracted the total chitosan, 8-9 g/100g mycelia from both fungi. according to t ... | 2008 | 17996289 |
| microbial transformation of 20(s)-protopanaxatriol-type saponins by absidia coerulea. | three 20(s)-protopanaxatriol-type saponins, ginsenoside-rg1 (1), notoginsenoside-r1 (2), and ginsenoside-re (3), were transformed by the fungus absidia coerulea (as 3.3389). compound 1 was converted into five metabolites, ginsenoside-rh4 (4), 3beta,2beta,25-trihydroxydammar-(e)-20(22)-ene-6-o-beta-d-glucopyranoside (5), 20(s)-ginsenoside-rh1 (6), 20(r)-ginsenoside-rh1 (7), and a mixture of 25-hydroxy-20(s)-ginsenoside-rh1 and its c-20(r) epimer (8). compound 2 was converted into 10 metabolites, ... | 2007 | 17629326 |
| [hydroxylation of 16alpha, 17alpha-epoxy-4-pregenene-3, 20-dione by absidia coerulea with pseudo-crystallo feed]. | the 11-hydroxylation of 16alpha,17alpha-epoxy-4-pregenene-3,20-dione as a useful intermediate for the preparation of hormones can be achieved by the mycelium of absidia coerulea at higher conversion rate than using other strains. in this paper 16alpha,17alpha-epoxy-4-pregenene-3,20-dione mixed with a little water, beta-cyclodextrin, tween-80 was introduced into the fermentation broth after ultrasonication to increase pseudo-water-solubility of the hydrophobic substrate. this pseudo-crystallo fee ... | 2006 | 16894906 |
| effect of supercritical fluids on c11beta-hydroxylation activity of absidia coerulea. | the viability and c11beta-hydroxylation activity of absidia coerulea were measured after treatment with compressed or supercritical co2 and c2h4 under various initial ph and temperature conditions. the specific activity of a. coerulea on c11beta-hydroxylation can reach 23% and 75%, respectively, after treatment with 7.5 mpa of co2 and c2h4, leading to the feasibility of enhancing both the solubility of the reactants and the beta-hydrocortisone yield for the hydroxylation of reichsterin's substan ... | 2004 | 15575728 |
| microbial glycosylation of four free anthraquinones by absidia coerulea. | absidia coerulea transformed four anthraquinones from rhubarb, chrysophanol, physcion, emodin and aloe-emodin to their corresponding glycosylated metabolites. the structures of the products were characterized as chrysophanol 8-o-beta-d-glucoside, physcion 8-o-beta-d-glucoside, emodin 6-o-beta-d-glucoside, and aloe-emodin 1-o-beta-d-glucoside, respectively. | 2004 | 15000479 |
| biotransformation xxxix. metabolism of testosterone, androstenedione, progesterone and testosterone derivatives in absidia coerulea culture. | the strain of absidia coerulea was used to investigate the transformations of testosterone, androstenedione, progesterone and testosterone derivatives with additional cl-c2 double bond and/or 17alpha-methyl group. all the examined substrates were transformed, mainly hydroxylated. it was found that the position and stereochemistry of the introduced hydroxyl group, as well as the yield of products, depended on the structure of the substrate. the first three substrates (hormones) underwent hydroxyl ... | 1996 | 8639472 |