ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Vijayasree Jayaprakash and Uma Maheswari Devi Palempalli
Department of Applied Microbiology, Sri Padmavati Mahila Visvavidyalayam, Tirupati, India.
J. Pure Appl. Microbiol., 2018, 12 (4): 2259-2268 | Article Number: 5320
Received: 02/10/2018 | Accepted: 15/11/2018 | Published : 24/12/2018
Abstract

The biodegradation of High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) by  Aspergillus oryzae  was examined in the current study. The optimal temperature, pH, favorable carbon and nitrogen sources for organism growth were determined. A comparative study of degradation in surface sterilized and palmitic acid treated polyethylenes was done to learn the effect of  the surfactant fatty acid on the polymer. The films degraded by Aspergillus oryzae strain were analyzed by weight loss, FTIR, SEM studies and degree of water absorption (swelling index). The organism showed 33% weight loss of black coloured HDPE and 40% weight loss of green coloured LDPE in 90 days after palmitic acid treatment.

Keywords

HDPE, LDPE, Aspergillus oryzae, biodegradation.

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