Molecular Identification and Polymer Determination of Poly(3-hydroxybutyrate) Producing Bacteria Isolated from the Fish Lutjanus sp. | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 32, Volume 28, Issue 6, November 2024, Page 589-601 PDF (736.39 K) | ||||
| DOI: 10.21608/ejabf.2024.392401 | ||||
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| Author | ||||
| Rahmi et al. | ||||
| Abstract | ||||
| Poly(3-hydroxybutyrate) is a biodegradable bio-plastic that can be produced by bacteria and used as a substitute for petrochemical plastics. Various sources of Poly(3-hydroxybutyrate) producing bacteria have been successfully studied. However, few bacteria from fish samples have been identified. More sources of Poly(3-hydroxybutyrate) producing bacteria need to be found to obtain potential bacteria. Therefore, it is necessary to carry out molecular identification of poly(3-hydroxybutyrate) producing bacteria isolated from Lutjanus sp. and determine the polymer content. The methods of this research include the isolation and screening of isolates of Poly(3-hydroxybutyrate) producing bacteria, molecular identification of Poly(3-hydroxybutyrate) producing bacteria, and production and determination of Poly(3-hydroxybutyrate) content using gas chromatography-mass spectrometry (GM-MS). The results indicate that during the bacterial screening stage, two isolates capable of producing Poly(3-hydroxybutyrate) were isolated from the intestine (UKA-2) and gill (IKA-4) of Lutjanus species. Molecular identification of UKA-2 and IKA-4 bacteria revealed their similarity to Enterobacter cloacae and Bacillus species. The Poly(3-hydroxybutyrate) content testing by GC-MS showed that the content value of UKA-2 was 1.39%, while IKA-4 had a content of 78%. This demonstrates the significant potential of the IKA-4 isolate, Bacillus sp. isolated from the gill of Lutjanus sp. to produce Poly(3-hydroxybutyrate). | ||||
| Keywords | ||||
| Bioplastic; GC-MS; Isolation; Fish bacteria; Nile blue A; Screening P(3HB) | ||||
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