The Experts below are selected from a list of 1401 Experts worldwide ranked by ideXlab platform

Mingzhu Shao - One of the best experts on this subject based on the ideXlab platform.

  • nanofe3o4 accelerates anoxic biodegradation of 3 5 6 trichloro 2 pyridinol
    Chemosphere, 2019
    Co-Authors: Chen Zhang, Shenghui Wang, Zhiwei Lv, Yang Zhang, Zhifeng Song, Mingzhu Shao
    Abstract:

    Abstract 3, 5, 6-trichloro-2-pyridinol (TCP) is a widespread organic pollutant with persistent, mobile and high antimicrobial effects. Here, nanoFe 3 O 4 was firstly introduced into the anoxic biodegradation of TCP. It was found that nanoFe 3 O 4 significantly accelerated TCP biodegradation. The removal rate of TCP (100 mg L −1 ) increased from 83.03% to 98.74% within 12 h in the presence of nanoFe 3 O 4 , and the addition of nanoFe 3 O 4 also promoted the accumulation of CO 2 . Reductive dechlorination mechanism was involved in anoxic biodegradation of TCP. Molecular approaches further revealed that nanoFe 3 O 4 distinctly induced the shifts of bacterial community. The dominant genus Ochrobactrum was converted to genus Delftia in nanoFe 3 O 4 treatment, and the relative abundance of Delftia increased from 10.26% to 44.62%. Meanwhile, the total relative abundance of bacteria related to TCP dechlorination and degradation significantly increased in the presence of nanoFe 3 O 4 . These results indicated that nanoFe 3 O 4 induced the enrichment of TCP-degrading bacteria to promote the anoxic biodegradation of TCP.

Chiuchung Young - One of the best experts on this subject based on the ideXlab platform.

  • phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities
    Applied Soil Ecology, 2006
    Co-Authors: Y.p. Chen, F T Shen, A B Arun, Punchapady Devasya Rekha, Chiuchung Young
    Abstract:

    The ability of a few soil microorganisms to convert insoluble forms of phosphorus to an accessible form is an important trait in plant growth-promoting bacteria for increasing plant yields. The use of phosphate solubilizing bacteria as inoculants increases the P uptake by plants. In this study, isolation, screening and characterization of 36 strains of phosphate solubilizing bacteria (PSB) from Central Taiwan were carried out.Mineral phosphate solubilizing (MPS) activities of all isolates were tested ontricalcium phosphate medium by analyzing the soluble-P content after 72 h of incubation at 30 8C. Identification and phylogenetic analysis of 36 isolates were carried out by 16S rDNA sequencing. Ten isolates belonged to genus Bacillus, nine to genus Rhodococcus, seven to genus Arthrobacter, six to genus Serratia and one each to genera Chryseobacterium, Delftia, Gordonia and Phyllobacterium. In addition, four strains namely, Arthrobacter ureafaciens, Phyllobacterium myrsinacearum, Rhodococcus erythropolis and Delftia sp. are being reported for the first time as phosphate solubilizing bacteria (PSB) after confirming their capacity to solubilize considerable amount of tricalcium phosphate in the medium by secreting organic acids. P-solubilizing activity of these strains was associated with the release of organic acids and a drop in the pH of the medium. HPLC analysis detected eight different kinds of organic acids, namely: citric acid, gluconic acid, lactic acid, succinic acid, propionic acid and three unknown organic acids from the cultures of these isolates. An inverse relationship between pH and P solubilized was apparent from this study. Identification and characterization of soil PSB for the effective plant growth-promotion broadens the spectrum of phosphate solubilizers available for field application.

Chen Zhang - One of the best experts on this subject based on the ideXlab platform.

  • nanofe3o4 accelerates anoxic biodegradation of 3 5 6 trichloro 2 pyridinol
    Chemosphere, 2019
    Co-Authors: Chen Zhang, Shenghui Wang, Zhiwei Lv, Yang Zhang, Zhifeng Song, Mingzhu Shao
    Abstract:

    Abstract 3, 5, 6-trichloro-2-pyridinol (TCP) is a widespread organic pollutant with persistent, mobile and high antimicrobial effects. Here, nanoFe 3 O 4 was firstly introduced into the anoxic biodegradation of TCP. It was found that nanoFe 3 O 4 significantly accelerated TCP biodegradation. The removal rate of TCP (100 mg L −1 ) increased from 83.03% to 98.74% within 12 h in the presence of nanoFe 3 O 4 , and the addition of nanoFe 3 O 4 also promoted the accumulation of CO 2 . Reductive dechlorination mechanism was involved in anoxic biodegradation of TCP. Molecular approaches further revealed that nanoFe 3 O 4 distinctly induced the shifts of bacterial community. The dominant genus Ochrobactrum was converted to genus Delftia in nanoFe 3 O 4 treatment, and the relative abundance of Delftia increased from 10.26% to 44.62%. Meanwhile, the total relative abundance of bacteria related to TCP dechlorination and degradation significantly increased in the presence of nanoFe 3 O 4 . These results indicated that nanoFe 3 O 4 induced the enrichment of TCP-degrading bacteria to promote the anoxic biodegradation of TCP.

Y.p. Chen - One of the best experts on this subject based on the ideXlab platform.

  • phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities
    Applied Soil Ecology, 2006
    Co-Authors: Y.p. Chen, F T Shen, A B Arun, Punchapady Devasya Rekha, Chiuchung Young
    Abstract:

    The ability of a few soil microorganisms to convert insoluble forms of phosphorus to an accessible form is an important trait in plant growth-promoting bacteria for increasing plant yields. The use of phosphate solubilizing bacteria as inoculants increases the P uptake by plants. In this study, isolation, screening and characterization of 36 strains of phosphate solubilizing bacteria (PSB) from Central Taiwan were carried out.Mineral phosphate solubilizing (MPS) activities of all isolates were tested ontricalcium phosphate medium by analyzing the soluble-P content after 72 h of incubation at 30 8C. Identification and phylogenetic analysis of 36 isolates were carried out by 16S rDNA sequencing. Ten isolates belonged to genus Bacillus, nine to genus Rhodococcus, seven to genus Arthrobacter, six to genus Serratia and one each to genera Chryseobacterium, Delftia, Gordonia and Phyllobacterium. In addition, four strains namely, Arthrobacter ureafaciens, Phyllobacterium myrsinacearum, Rhodococcus erythropolis and Delftia sp. are being reported for the first time as phosphate solubilizing bacteria (PSB) after confirming their capacity to solubilize considerable amount of tricalcium phosphate in the medium by secreting organic acids. P-solubilizing activity of these strains was associated with the release of organic acids and a drop in the pH of the medium. HPLC analysis detected eight different kinds of organic acids, namely: citric acid, gluconic acid, lactic acid, succinic acid, propionic acid and three unknown organic acids from the cultures of these isolates. An inverse relationship between pH and P solubilized was apparent from this study. Identification and characterization of soil PSB for the effective plant growth-promotion broadens the spectrum of phosphate solubilizers available for field application.

Shridhar Patil - One of the best experts on this subject based on the ideXlab platform.

  • bioconversion of 16 dehydropregnenolone acetate to exclusively 4 androstene 3 17 dione by Delftia acidovorans mtcc 3363
    Polish Journal of Microbiology, 2017
    Co-Authors: Pushpendra Awadhiya, Tushar Banerjee, Shridhar Patil
    Abstract:

    Delftia acidovorans MTCC 3363 was found to convert 16-dehydropregnenolone acetate (16-DPA) exclusively to 4-androstene-3, 17-dione (AD). Addition of 9α-hydroxylase inhibitors was not required for preventing the accumulation of byproducts. The effect of pH, temperature, substrate concentration, surfactants and carrier solvents on this bioconversion has been studied. 16-DPA was maximally converted in buffered medium at pH 7.0, at temperature 30°C and 0.5 mg ml-1 substrate concentration. Detergent addition and temperature above 35°C had deleterious effect on bioconversion. Dioxan was found to be the best carrier solvent for biotransformation of 16-DPA to AD.

  • Bioconversion of 16-dehydropregnenolone Acetate to Exclusively 4-androstene-3,17-dione by Delftia acidovorans MTCC 3363
    'Index Copernicus', 2017
    Co-Authors: Pushpendra Awadhiya, Tushar Banerjee, Shridhar Patil
    Abstract:

    Delftia acidovorans MTCC 3363 was found to convert 16-dehydropregnenolone acetate (16-DPA) exclusively to 4-androstene-3, 17-dione (AD). Addition of 9α-hydroxylase inhibitors was not required for preventing the accumulation of byproducts. The effect of pH, tempera­ture, substrate concentration, surfactants and carrier solvents on this bioconversion has been studied. 16-DPA was maximally converted in buffered medium at pH 7.0, at temperature 30°C and 0.5 mg ml–1 substrate concentration. Detergent addition and temperature above 35°C had deleterious effect on bioconversion. Dioxan was found to be the best carrier solvent for biotransformation of 16-DPA to AD