Microplastics occurrence, detection and removal with emphasis on insect larvae gut microbiota

Microplastics have been identified in all living forms including human beings, the present need is to restrain its spread and devise measures to remediate microplastics from polluted ecosystems. In this regard, the present review emphasizes on the occurrence, sources detection and toxic effects of microplastics in various ecosystems. The removal of microplastics is prevalent by various physico-chemical and biological methods, although the removal efficiency by biological methods is low. It has been noted that the degradation of plastics by insect gut larvae is a well-known aspect, however, the underlying mechanism has not been completely identified. Studies conducted have shown the magnificent contribution of gut microbiota, which have been isolated and exploited for microplastic remediation. This review also focuses on this avenue, as it highlights the contribution of insect gut microbiota in microplastic degradation along with challenges faced and future prospects in this area. [Display omitted] •Microplastics – complex entity with additives, adsorbed POPs and other matter•Microplastics detected in human placenta, lungs, blood and feces•Detection strategy – sampling, pre-treatment, separation and identification•Existing methods of removal – Low removal rate, cause secondary pollution•Gut Microbiota of microplastic-fed Insects – a promising stratagem for remediation