Isolation and molecular characterization of polyvinyl chloride (PVC) plastic degrading fungal isolates

被引：123

作者：

Ali, Muhammad Ishtiaq ^{[1
]}

Ahmed, Safia ^{[1
]}

Robson, Geoff ^{[2
]}

Javed, Imran ^{[1
]}

Ali, Naeem ^{[1
]}

Atiq, Naima ^{[1
]}

Hameed, Abdul ^{[1
]}

机构：

[1] Quaid I Azam Univ, Dept Microbiol, Islamabad, Pakistan

[2] Univ Manchester, Fac Life Sci, Manchester, Lancs, England

来源：

JOURNAL OF BASIC MICROBIOLOGY | 2014年 / 54卷 / 01期

关键词：

Biodegradation; Polyvinyl chloride; Fungi; SEM; GPC; AEROBIC BIODEGRADABILITY; POLYMERIC MATERIAL; DEGRADATION; SOIL; IDENTIFICATION; POLYETHYLENE; POLYSTYRENE; DNA;

D O I：

10.1002/jobm.201200496

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The recalcitrant nature of polyvinyl chloride creates serious environmental concerns during manufacturing and waste disposal. The present study was aimed to isolate and screen different soil fungi having potential to biodegrade PVC films. After 10 months of soil burial experiment, it was observed that a number of fungal strains were flourishing on PVC films. On morphological as well as on 18rRNA gene sequence and phylogenetic basis they were identified as Phanerochaete chrysosporium PV1, Lentinus tigrinus PV2, Aspergillus niger PV3, and Aspergillus sydowii PV4. The biodegradation ability of these fungal isolates was further checked in shake flask experiments by taking thin films of PVC (C source) in mineral salt medium. A significant change in color and surface deterioration of PVC films was confirmed through visual observation and Scanning electron microscopy. During shake flask experiments, P. chrysosporium PV1 produced maximum biomass of about 2.57mgml(-1) followed by A. niger PV3. P. chrysosporium PV1 showed significant reduction (178,292Da(-1)) in Molecular weight of the PVC film than control (200,000Da(-1)) by gel permeation chromatography. Furthermore more Fourier transform infrared spectroscopy and nuclear magnetic resonance also revealed structural changes in the PVC. It was concluded that isolated fungal strains have significant potential for biodegradation of PVC plastics.

引用

页码：18 / 27

页数：10

共 46 条

[1]

Ali MI, 2009, INT J AGRIC BIOL, V11, P577

[2] Molecular typing by random amplification of polymorphic DNA and m13 southern hybridization of related paired isolates of Aspergillus fumigatus [J].