化妝品級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），它是一種水溶性，生物降解，不含毒性，使用微生物發酵法制得的生物高分子。γ-PGA是一種有粘性的物質，在“納豆”——發酵豆中被首次發現。它是一種特殊的陰離子自然聚合物，它是通過α-氨基＆γ-羧酸基團之間的酰胺鍵將D&L谷氨酸分子

特性： 
  · 對人體和環境無毒
  · 可生物降解，生態友好型
  · 水溶性，可得到無味清潔透明的溶液
  · 易交聯形成後期擁有卓越性能的水凝膠
                      

應用領域
    - PGA及其衍生物的分子量不等從5萬到2百萬道爾頓不等，因此他們可廣氾的應用在食品工業、化妝品、保健、水處理、廢水處理、衛生用品、醫療以及水凝膠等領域。 
   · 保健——有利於骨質疏鬆症者對鈣的吸收。
  · 醫藥——釋放藥物的載體，止血劑，軟組織填充劑。.
  · 化妝品——作為一個保濕劑以改善皮膚護理質量，作為增白劑具有長期持久的抗折皺的性能。
  

比其他聚合物商品更具優勢： 
  · 谷氨酸是無毒，可生物降解和退化，對皮膚有營養成分的高端產品。
  · 完全適用於所有的皮膚狀況，並提供優于HA（透明質酸）和膠原的持久的保濕效果
  · 只需要很低的濃度，因此成本降低。
  ·- PGA衍生物具有良好的強度，透明度和彈性。
   γ-聚谷氨酸可用於護膚產品、洗發水、發乳、剃須霜和口紅中。