Composition and morphology characterization of exopolymeric substances produced by the PAH-degrading fungus of Mucor mucedo

Environmental Science and Pollution Research International
Chunyun JiaZongqiang Gong

Abstract

To explore the role of exopolymeric substances (EPS) in the process of polycyclic aromatic hydrocarbons (PAH) biodegradation, the characteristics of EPS isolated from a PAH-degrading fungus were investigated firstly by spectrometric determination, microscopic observation, Fourier transform-infrared spectroscopy (FT-IR), and three-dimensional excitation-emission matrix fluorescence spectroscopy (3D-EEM), and then the PAH-degrading ability of isolated EPS was evaluated. The EPS compositions and morphology varied significantly with the extraction methods. EPS were mainly composed of proteins, carbohydrate, and humic-like substances, and the cation exchange resin (CER)-extracted EPS were granular while other EPS samples were all powders. Heating was the most effective treatment method, followed by the CER, centrifugation, and ultrasonication methods. However, 3D-EEM data demonstrated that heating treatment makes the mycelia lyse the most. Overall, therefore, the CER was the best EPS extraction method for Mucor mucedo (M. mucedo). The PAH degradation results indicated that 87 % of pyrene and 81 % of benzo[a]pyrene (B[a]P) were removed by M. mucedo over 12 days and 9 % more pyrene and 7 % more B[a]P were reduced after CER-extracted E...Continue Reading

References

May 15, 2002·Journal of Biotechnology·Hong Liu, Herbert H P Fang
Aug 17, 2004·Applied Microbiology and Biotechnology·Guo-Ping ShengZhou Yu
Aug 26, 2004·Environmental Pollution·Anders R JohnsenHauke Harms
Nov 9, 2007·Colloids and Surfaces. B, Biointerfaces·Guo-Ping ShengHan-Qing Yu
Aug 23, 2008·Journal of Hazardous Materials·Zhiqiang ZhangDidier Leonard
May 16, 2009·Journal of Hazardous Materials·A K Haritash, C P Kaushik
Jul 3, 2009·Journal of Colloid and Interface Science·Janette TourneyMarisa Magennis
Jul 28, 2012·Journal of Environmental Management·Tony Hadibarata, Risky Ayu Kristanti

❮ Previous
Next ❯

Citations

Jun 27, 2019·Environmental Science and Pollution Research International·Dan LiChongde Wu
Nov 24, 2020·Frontiers in Microbiology·Avani Bharatkumar PatelDatta Madamwar

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.