化妆品级γ-聚谷氨酸（γ-PGA）

γ-PGA, CAS：25513-46-6 γ-Polyglutamic acid  is a water soluble, biodegradable, non-toxic biopolymer produced by microbial fermentation. γ-PGA is a sticky material first found in “natto”, a fermented soybean. γ-PGA is an unusual anionic, naturally occurring homo polyamide that is made of D & L glutamic acid units connected by amide linkages between alpha amino & gamma carboxylic acid groups. CAS：25513-46-6  γ-PGA  has a molecular weights ranging from 50,000 to more than 2 million Daltons.	Applications PGA in CosmeticPGA in Agriculature PGA in Wastewater treament Health product Hygienic Pharma  PGA in Food industry
Structure:
γ-Polyglutamic acid γ-PGA Powder γ-PGA Hydrogel
Properties:
· Non toxic towards humans and environment    · Biodegradable, hence eco friendly    · Water soluble, gives non odorous clear transparent solution    · Can be easily cross linked to form hydro gels which further have excellent properties    · Can be prepared in Na, Ca, Mg, H forms.
Applications:
γ - PGA and its derivatives have molecular weights ranging from 50,000 to more than 2 million Daltons, hence they have wide applications in food industry, cosmetics,      health care, water treatment, waste water treatment, Hygiene products, Medical treatments, Hydrogels etc.
· Food industry - as thickener for foods & drinks, improves taste of drinks, stabilizer in ice creams, texture enhancer, binder, animal feed supplement, antifreezing agent or        cryoprotectant, bitterness relieving agent, as an additive in preparation of starch foods (bakery & noodles) for avoiding staling, enhancing food texture and maintaining food shapes.    · Water treatment – Heavy metal absorbent or chelating agent.    · Waste water treatment – Biopolymer flocculant, a substitute for polyacrylamide.    · Health Care – Facilitates calcium absorption in osteoporosis cases.    · Hygiene products – as absorbent in Baby diapers, women’s tampons etc.    · Medical treatment – Drug release carrier, a haemostatic agent, soft tissue augmentation,.    · Cosmetics - as a humectant, moisturizer to improve skin care quality, as a whitening agent, has anti wrinkle property which gives long lasting effect.
Advantages over other commercial available polymers:
· Non toxic, Biodegradable and degraded end products are glutamates which are nutritional ingredients to skin.    · Fully compatible with all skin conditions and provide long lasting moisturizing effect better than HA (Hyaluronic acid ) and Collagen    · Is required in very less concentration hence cost effective.    · γ-PGA derivatives have excellent strength, transparency and elasticity.
γ-PGAcan be used in skin care products, shampoo, hair lotion, shaving cream and lipsticks.

	γ–PGA Powder	γ-PGA Hydrogel
Appearance	White powder	Clear Liquid
Grade	Cosmetic	Cosmetic
Molecular Weight	700 kDa	700 kDa
Purity	≥92%	≥92%
γ–PGA content	≥90%	0.1%-25%
pH	4.0-7.0	4.0-7.0
Package	Aluminum foil	Bottle
Weight	100 g、500 g、1000 g	100 g、500 g、1000 g

γ-聚谷氨酸（γ-PGA），它是一种水溶性，生物降解，不含毒性，使用微生物发酵法制得的生物高分子。γ-PGA是一种有粘性的物质，在“纳豆”——发酵豆中被首次发现。它是一种特殊的阴离子自然聚合物，它是通过α-氨基＆γ-羧酸基团之间的酰胺键将D&L谷氨酸分子

特性： 
  · 对人体和环境无毒
  · 可生物降解，生态友好型
  · 水溶性，可得到无味清洁透明的溶液
  · 易交联形成后期拥有卓越性能的水凝胶
                      

应用领域
    - PGA及其衍生物的分子量不等从5万到2百万道尔顿不等，因此他们可广泛的应用在食品工业、化妆品、保健、水处理、废水处理、卫生用品、医疗以及水凝胶等领域。 
   · 保健——有利于骨质疏松症者对钙的吸收。
  · 医药——释放药物的载体，止血剂，软组织填充剂。.
  · 化妆品——作为一个保湿剂以改善皮肤护理质量，作为增白剂具有长期持久的抗折皱的性能。
  

比其他聚合物商品更具优势： 
  · 谷氨酸是无毒，可生物降解和退化，对皮肤有营养成分的高端产品。
  · 完全适用于所有的皮肤状况，并提供优于HA（透明质酸）和胶原的持久的保湿效果
  · 只需要很低的浓度，因此成本降低。
  ·- PGA衍生物具有良好的强度，透明度和弹性。
   γ-聚谷氨酸可用于护肤产品、洗发水、发乳、剃须霜和口红中。