Bio-degradation of polyhydroxyalkanoates (PHA) films in soil and lake environment

Sevakumaran Vigneswari, and Nurul Shuhada Rashid, and Al-Ashraf Abdullah Amirul, (2019) Bio-degradation of polyhydroxyalkanoates (PHA) films in soil and lake environment. Malaysian Applied Biology, 48 (1). pp. 193-198. ISSN 0126-8643


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The use of petroleum-based synthetic plastics has led to a deleterious solid waste management especially in the form of marine debris and presents a major growing global pollution problem. In response to these issues, the application of biobased and biodegradable polymers as an alternative to synthetic plastics has been proposed. Polyhydroxyalkanoates (PHA) is a biodegradable microbial polymer. In this study, the biodegradation of this PHA both in soil and lake environment was evaluated. The percentage of degradation of the PHAs with various monomers such as poly (3-hydroxybutrate) [P(3HB)] and its copolymers poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB] in soil and lake was carried out. Besides, the modifications of these biopolymers into salt-leached films were also tested. Based on the results obtained, P(3HB-co- 4HB) films showed the highest rate of degradation for both lake and soil environment. Also the degradation of PHA, mainly caused by microbial activity, isolation and identification microorganisms capable of degrading PHA was also carried out. Based on the degradation index, Pseudomonas species and Acidovorax species were isolated.

Item Type:Article
Keywords:PHA; P(3HB-co-4HB); Degradation
Journal:Malaysian Applied Biology Journal
ID Code:12796
Deposited By: ms aida -
Deposited On:11 Apr 2019 07:27
Last Modified:16 Apr 2019 09:12

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