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Microbial production of high value molecules using rayon waste material as carbon-source

机译:使用人造丝废料作为碳源的高价值分子的微生物生产

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摘要

Rayon filaments composed of regenerated cellulose are used as reinforcement materials in tires and to a lower extent in the clothing industry as personal protective equipment e.g. flame retardant cellulosic based materials. After use, these materials are currently transferred to landfills while chemical degradation does not allow the recovery of the cellulose (as glucose) nor the separation of the high valuable flame-retardant pigment. In this study, rayon fibers were enzymatically hydrolyzed to allow recovery of glucose and valuable additives. The glucose was successfully used as carbon source for the production of high value compounds such as itaconic acid, lactic acid and chitosan. 14.2 g/L of itaconic acid, 36.5 g/L of lactic acid and 39.2 g/L of chitosan containing biomass were produced from Escherichia coli, Lactobacillus paracasei and Aspergillus niger, respectively, comparable to yields obtained when using commercial glucose as carbon source.
机译:由再生纤维素组成的人造丝丝用作轮胎中的增强材料以及服装工业中的较低程度,作为个人防护装备。 阻燃纤维素基材料。 使用后,目前这些材料目前被转移到垃圾填埋场,而化学降解不允许回收纤维素(作为葡萄糖),也不是高价值阻燃性颜料的分离。 在本研究中,人造丝纤维被酶促水解,以允许葡萄糖和有价值的添加剂恢复。 葡萄糖成功地用作碳源,用于生产高价值化合物,如衣康酸,乳酸和壳聚糖。 从大肠杆菌,乳酸杆菌,帕拉卡萨氏菌和曲霉生物量产生14.2克/升衣康酸,36.5g / L含有生物质的乳酸生物质,与使用商业葡萄糖作为碳源时获得的产率相当。

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