Abstract: γ- Polyglutamic acid（γ-PGA），which can be produced by microbial fermentation，is a homopolymer of glutamic acid. γ-Polyglutamic acid (γ-PGA) shows water solubility，biodegradation，edibility and non-toxicity to human and environment，which makes it widely applicable in many fields，such as food，cosmetics，medicine，agriculture and so on .The chemical constitution，properties，production and application of γ-PGA are reviewed.

摘要： γ-聚谷氨酸是一种谷氨酸同聚物，可由微生物发酵得到。γ-聚谷氨酸具有水溶性、可生物降解性和可食用性且对人和环境无毒的诸多优点，这使得γ-聚谷氨酸及其衍生物在食品、化妆品、医药和农业等领域具有广阔的应用前景。本文综述了γ-聚谷氨酸的化学结构、性质、生产方法及其用途。