Screening for Polypropylene Degradation Potential of Bacteria Isolated from Mangrove Ecosystems in Peninsular Malaysia

Abstract

Polypropylene (PP) is a versatile polymer that is widely used globally and plays an important role in many commercial applications. Its recalcitrance to degradation by microorganisms makes it persist in the environment, causing environmental pollution. In the present studies, Bacillus cereus and Sporosarcina globispora isolated from mangrove sediments in Peninsular Malaysia were screened for ability to degrade polypropylene using mineral salt media. The bacteria isolates were able to grow on media infused with polypropylene. The extents of biodegradability of the polypropylene granules by the isolated bacterial strains were assessed in vitro in the medium containing polypropylene as sole carbon source. After 40 days of incubation, the biodegradation of polypropylene granules was measured in terms of weight loss and rate of polymer reduction. Bacillus cereus showed 12% and Sporosarcina globispora showed 11% degradation by weight loss in 40 days. The rate of reduction of the polypropylene polymer granules by the isolates was 0.003g day -1 and 0.002g day -1 for B. cereus and S. globispora, respectively. The designated isolates can degrade the microplastic material and indicate positive potential towards remediation of polypropylene-contaminated environment.

Biodegradation of low-density polyethylene and polypropylene by microbes isolated from Vaigai River, Madurai, India

“…by changing color of microplastics as agreed earlier byHemjinda et al (2007) Okpokwasili and Nweke (2005). stated that the increasing bacterial concentration, and modifying the combination of bacterial isolates could significantly inducing the polymer degradation.The degradation of PE by bacterial isolates may extent up to certain limits and it depends on their binding efficiency in to the plastics(Helen et al 2017a). While individual approach, the highest polypropylene degradationwas observed in the B. paramycoides than the B. cereus and this results were contrast with Helen et al (2017a, b) who made attempt on polypropylene degradation by B. cereus and S. globispora and obtained highest degradation by B. cereus than the S. globispora.…”

Microbial strategies for degradation of microplastics generated from COVID-19 healthcare waste

“… LDPE 21 days Huerta Lwanga et al, 2018 Mangrove sediments Bacillus PP 40 days 4.0 Auta et al (2018) Mangrove sediment Bacillus gottheilii PE, PET, PP, PS 40 days 6.2, 3.0, 3.6, 5.8 Auta et al (2018) Mangrove sediment Rhodococcus PP 40 days 6.4 Auta et al (2018) Compost Bacillus thuringiensis PP and PLLA 15 days 12% Jain et al (2018) Compost Bacillus licheniformis PP and PLLA 15 days 10% Jain et al (2018) Sewage treatment plants (STP) Microbial consortia (including Aneurinibacillus sp., Brevibacillus sp.) HDPE, LDPE and PP 140 days 47%, 58% and 56% Skariyachan et al (2018) Mangrove sediments in Peninsular Malaysia Bacillus cereus PP 40 days 12 Helen et al (2017) Mangrove sediments in Peninsular Malaysia Sporosarcina Globispora PP 40 days 11 <...…”

Agen Pendegradasi Mikroplastik Dari Mikroba Endofit Mangrove Avicennia marina

“…Mineral salt media (MSM) digunakan untuk mencari pendegradasi mikroplastik menggunakan metode yang dijelaskan oleh (Divyalakshmi dan Subhasini, 2016;Auta et.al., 2017b) dengan sedikit modifikasi. Media MSM dibuat dengan komposisi K2 HPO4, 1.73g; KH2PO4, 0.68g; MgSO4-7H2O, 0.1g; FeSO4-7H2O, 0.03g; NH4NO3, 1g; CaCl2-2H2O, 0.02g (Helen et al, 2017). MSM berisi semua nutrisi yang dibutuhkan untuk pertumbuhan bakteri, kecuali untuk sumber karbon.…”