Degradation of polyethylene by Klebsiella pneumoniae Mk-1 isolated from soil.

The massive accumulation of polyethylene (PE) in the natural environment has caused persecution to the ecological environment. At present, the mechanism of microbial degradation of PE remains unclear, and the related enzymes for degrading PE need to be further explored. In this study, a strain of Klebsiella pneumoniae Mk-1 which can effectively degrade PE was obtained from the soil.

The potential beneficial effects of GM11 on rats with chronic unpredictable mild stress- induced depression.

Objective: The main purpose of the present study was to assess the beneficial effect of GM11 ( GM11), screened from Sichuan traditional fermented food, in depressive rats induced by chronic unpredictable mild stress (CUMS).

Methods: Male SPF SD rats were randomly assigned to 3 groups: the control group, CUMS group and CUMS +  GM11 group ( = 10). The rats in the CUMS and GM11 groups received CUMS stimulation for 42 d.

Screening of Polyethylene-Degrading Bacteria from Rhyzopertha Dominica and Evaluation of Its Key Enzymes Degrading Polyethylene.

Polyethylene (PE) is widely used, and it has caused serious environmental problems due to its difficult degradation. At present, the mechanism of PE degradation by microorganisms is not clear, and the related enzymes of PE degradation need to be further explored. In this study, Rd-H2 was obtained from Rhizopertha dominica, which had certain degradation effect on PE plastic.