Study of plastic degrading bacteria by Aneurinibacillus migulanus

Abstract

According to recent time the most issue about plastic waste is the big problem of the world. Especially, plastic packaging bags are come from convenience store or department store such as 7–11, Makro. The packaging consists of various kinds of plastic bags in food packaging that use more than 100 years for degradation. Microorganisms such as bacteria and fungi are involved in the degradation of both natural and synthetic plastics. Biodegradation is governed by different factors that include polymer characteristics, type of organism, and nature of pretreatment. The polymer characteristics such as its mobility, tacticity, crystallinity, molecular weight, the type of functional groups and substituents present in its structure, and plasticizers or additives added to the polymer all play an important role in its degradation. The objectives were study of bacteria (Aneurinibacillus migulanus) that can degrading plastic packaging and efficacy of degradation. This research was study on degradation of plastic films in solid and liquid media, concentration of Optical Density (OD) analysis, and concentration of cell dry (g) analysis. This bacteria (Aneurinibacillus migulanus) can degrade bioplastic plastic packaging in liquid medium within 20 days at 30 °C, 180 rpm. The highest rate of degrading activity, OD 600 nm, Cell dry weight (g) in Champion sample (14%, 2.11, and 0.055 g.), followed by S&P sample (1.9%, 2.12, and 0.061 g.) respectively. However, a well-established study on bioplastic degrading microorganism using optimize condition such as RSM technique still requires more research efforts to be generalized and applied to a wider scope of biodegradable plastics production.