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中文摘要：
L-色氨酸作为人体内的一种必需氨基酸，广泛应用于医药、食品与饲料等行业。工业上采用的色氨酸生产方法有化学合成法、转化法及微生物发酵法。近年来，随着代谢工程在色氨酸菌种选育中的成功运用，微生物发酵法逐渐成为主要的色氨酸生产方法。系统综述了微生物发酵法生产色氨酸所涉及的代谢工程策略，包括生物合成色氨酸的代谢调控机制以及途径改造的措施和效果，此外，还探讨了L-色氨酸未来的发展前景。
英文摘要：
L-tryptophan （L-Trp） is widely used in food, animal feed and pharmaceutical industries as an essential amino acid for humans. Chemical synthesis, enzymatic~microbial conversion and microbial fermentation are the methods for industrial production of L-Trp. Recently, with successful application of metabolic engineering in strain improvement, microbial fermentation gradually becomes the major method of L-Trp production. The strategy of metabolic engineering for improving L-Trp production is reviewed, involving the regulatory mechanism and genetic modification of L-Trp biosynthesis. Furthermore, the prospect of L-Trp production is also discussed.
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