Effects of natural polymer acetylation on the anaerobic bioconversion to methane and carbon dioxide

  title={Effects of natural polymer acetylation on the anaerobic bioconversion to methane and carbon dioxide},
  author={Christopher J. Rivard and William S. Adney and Michael E. Himmel and David J. Mitchell and Todd B. Vinzant and Karel Grohmann and Luc Moens and Helena Li Chum},
  journal={Applied Biochemistry and Biotechnology},
The successful production of novel biodegradable plastic copolymers incorporating both synthetic plastic formulations, such as polystyrene, and naturally occurring biodegradable polymer components, such as cellulose, starch, or xylan, requires stable chemical bonding between these polymers. Modification of the natural polymers through acetylation of the available hydroxyl groups permits the formation of appropriate film-forming plastic copolymers. However, modification of natural polymers has… 

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Anaerobic degradation of eight commercially available biodegradable polymers was compared in two anaerobic tests using digestion sludge, according to ISO 11734 and ASTM D.5210-91, but with the ISO medium, longer lag phases and greater ranges of variation in the results were observed.

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Specific cellulose degradation rates were determined for aerobic and anaerobic digestion systems fed a high cellulose, processed MSW feed, while maintaining optimum nutrient levels, mesophilic temperature (37°C), and a pH of 7.0–7.4.

Effect of the degree of acetylation on the enzymatic digestion of acetylated xylans

The onset of resistance is similar for both the xylanase and acetyl esterase enzymes, and both enzymes were completely inhibited by a degree of acetylation of 1.5 moles acetyl groups per mole anhydroxylose units at all enzyme loadings.

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The management of solid waste is reaching a crisis in the U.S. and worldwide. This is illustrated by wandering garbage barges with no permission to land and by wastes washing up on beaches. Every

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It was almost exactly three years ago that a ceramic material that superconducts above liquid nitrogen temperature (77 K) was discovered. Within days of the discovery, electronics, power