Articles with "microbial transformation" as a keyword



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A New Flavone from Flos Sophorae Immaturus Through Microbial Transformation by Nigrospora sphaerica ZMT05

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Published in 2019 at "Chemistry of Natural Compounds"

DOI: 10.1007/s10600-019-02885-3

Abstract: A new flavone derivative, 3′-(γ,γ-dimethylallyloxy)-5,7-dihydroxy-4′-methoxyflavone (1), was isolated from Flos Sophorae Immaturus through microbial transformation by the fungus Nigrospora sphaerica ZMT05. Its structure was elucidated by comprehensive spectroscopic analyses. This compound showed moderate in vitro… read more here.

Keywords: microbial transformation; flos sophorae; immaturus microbial; sophorae immaturus ... See more keywords
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Microbial transformation of naringenin derivatives

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Published in 2017 at "Archives of Pharmacal Research"

DOI: 10.1007/s12272-017-0916-z

Abstract: Microbial transformations of (±)-7-O-prenylnaringenin (7-PN, 1) and (±)-7-O-allylnaringenin (7-AN, 2) have isolated four metabolites (3–6). Structures of these novel compounds were identified as 5,4′-dihydroxy-7-O-[(2E)-4-hydroxy-3-methyl-2-buten-1-yl]flavanone (3), 5,4′-dihydroxy-7-O-(2,3-dihdroxy-3-methylbutyl)flavanone (4), 5,4′-dihydroxy-7-O-(2,3-dihdroxypropyl)flavanone (5), and 5-O-β-D-glucopyranosyl-7-O-allyl-4′-hydroxyflavanone (6) based on spectroscopy.… read more here.

Keywords: microbial transformation; transformation naringenin; naringenin derivatives;
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Metagenomic evidence for the microbial transformation of carboxyl-rich alicyclic molecules: A long-term macrocosm experiment.

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Published in 2022 at "Water research"

DOI: 10.1016/j.watres.2022.118281

Abstract: Carboxyl-rich alicyclic molecules (CRAMs) widely exist in the ocean and constitute the central part of the refractory dissolved organic matter (RDOM) pool. Although a consensus has been reached that microbial activity forms CRAMs, the detailed… read more here.

Keywords: microbial transformation; rich alicyclic; term macrocosm; long term ... See more keywords
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Pyrogenic Carbon Improves Cd Retention during Microbial Transformation of Ferrihydrite under Varying Redox Conditions.

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Published in 2023 at "Environmental science & technology"

DOI: 10.1021/acs.est.3c01008

Abstract: Fe(III) (oxyhydr)oxides are ubiquitous in paddy soils and play a key role in Cd retention. Recent studies report that pyrogenic carbon (PC) may largely affect the microbial transformation processes of Fe(III) (oxyhydr)oxides, yet the impact… read more here.

Keywords: retention; pyrogenic carbon; redox conditions; ferrihydrite ... See more keywords
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Microbial Transformation of Broussochalcones A and B by Aspergillus niger.

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Published in 2021 at "Journal of natural products"

DOI: 10.1021/acs.jnatprod.0c01102

Abstract: Broussochalcones A (BCA, 1) and B (BCB, 2) are major bioactive constituents isolated from Broussonetia papyrifera, a polyphenol-rich plant belonging to the family Moraceae. Due to their low yields from natural sources, BCA (1) and… read more here.

Keywords: microbial transformation; aspergillus niger; transformation broussochalcones; transformation ... See more keywords
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Production of an α-pyrone metabolite and microbial transformation of isoflavones by an Indonesian Streptomyces sp.

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Published in 2019 at "Journal of Asian Natural Products Research"

DOI: 10.1080/10286020.2019.1635588

Abstract: Abstract A benzyl-α-pyrone metabolite, streptpyrone A (1), was obtained together with three known isoflavonoids, daidzein-7-O-α-l-rhamnoside (2), genistein-7-O-α-l-rhamnoside (3), and daidzein (4), from the culture broth of an Indonesian actinomycete Streptomyces sp. TPU1401A. The structure of… read more here.

Keywords: microbial transformation; strain tpu1401a; pyrone metabolite; metabolite microbial ... See more keywords
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Microbial transformation of icariin and its derivatives.

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Published in 2021 at "Natural product research"

DOI: 10.1080/14786419.2021.1975702

Abstract: Microbial transformation is an important tool to perform selective conversion of compounds to derivatives which are difficult to produce synthetically. In order to obtain icariside II and icaritin, the active components in Herba Epimedii in… read more here.

Keywords: microbial transformation; transformation icariin; icariin; icaritin ... See more keywords
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Gut Microbial Transformation of the Dietary Imidazoquinoxaline Mutagen MelQx Reduces Its Cytotoxic and Mutagenic Potency

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Published in 2017 at "Toxicological Sciences"

DOI: 10.1093/toxsci/kfx132

Abstract: Abstract The diverse community of microbes present in the human gut has emerged as an important factor for cancer risk, potentially by altering exposure to chemical carcinogens. In the present study, human gut bacteria were… read more here.

Keywords: microbial transformation; melqx; gut; potency ... See more keywords
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Microbial Transformation of Calamintha glandulosa Essential Oil by Aspergillus niger

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Published in 2018 at "Natural Product Communications"

DOI: 10.1177/1934578x1801300425

Abstract: A number of potentially useful compounds with various biological activities can be obtained from plant metabolites by microorganisms. In present research, essential oil of Calamintha glandulosa was subjected to the biotransformation process by mycromicete Aspergillus… read more here.

Keywords: essential oil; aspergillus niger; microbial transformation; oil ... See more keywords
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Effects of Microbial Transformation on the Biological Activities of Prenylated Chalcones from Angelica keiskei

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Published in 2022 at "Foods"

DOI: 10.3390/foods11040543

Abstract: Microbial transformation is an alternative method for structural modification. The current study aimed at application of microbial transformation for discovering new derivatives and investigating the structure-activity relationship of isobavachalcone (1), 4-hydroxyderricin (2), and xanthoangelol (3)… read more here.

Keywords: microbial transformation; angelica keiskei; transformation; cytotoxicity ... See more keywords
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Microbial Transformation of Yakuchinone A and Cytotoxicity Evaluation of Its Metabolites

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Published in 2022 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms23073992

Abstract: Yakuchinone A (1) is a bioactive diarylheptanoid isolated from the dried fruits of Alpinia oxyphylla. Microbial transformation has been recognized as an efficient method to produce new biologically active derivatives from natural products. In the… read more here.

Keywords: microbial transformation; hydroxyoxyphyllacinol hydroxyoxyphyllacinol; transformation yakuchinone; transformation ... See more keywords