Degradation of degradable starch-polyethylene plastics in a compost environment

Article Abstract:

A comprehensive evaluation of the degradation performance of degradable starch polyethylene plastic compost bags is discussed. A 20-day and an eight-week period were used in the characterization of the rate of chemical degradation and photodegradation. High-temperature gel permeation chromatography was used to measure changes in the polyethylene molecular weight distribution. The degradation of these plastics in the natural environment was confirmed.

Research, Usage, Plastics, Compost, Biodegradable plastics, Plastic bags

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Changes in fatty acid branching and unsaturation of Streptomyces griseus and Brevibacterium fermentans as a response to growth temperature

Article Abstract:

The relation between growth temperature and fatty acid composition of Streptomyces griseus and Brevibacterium fermentans were studied. S. griseus and B. fermentans showed characteristic fatty acid interchanges at three and two growth temperature changes, respectively. Changes in fatty acid branching, unsaturation and chain length were involved. The effect of temperature on the fatty acid profiles of S. griseus and B. fermentans were different.

Physiological aspects, Streptomyces, Fatty acid metabolism

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