Zinc citrate is available as dihydrate and trihydrate and is produced by complete neutralisation of citric acid with a high purity zinc source, subsequent precipitation and dehydration.
Zinc citrate is mainly used in dental care products such as toothpastes, mouthwashes and chewing gums due to its antimicrobial and anti-inflammatory effects and its ability to reduce or inhibit the formation of dental plaque and tartar. In pharmaceuticals, zinc citrate fights common colds. Zinc is increasingly used in food supplements, functional foods and beverages.
As an organic mineral source it is preferred in many applications over inorganic sources because of its superior bioavailability, physiological compatibility and nearly neutral taste compared to other zinc salts.
Among the organic zinc salts zinc citrate has one of the highest zinc content (31%).
Zinc citrate is supplied as a white to almost white powder. It is practically odourless, slightly soluble in water, soluble in diluted acid and practically insoluble in ethanol (96%). Zinc citrate has an inverse solubility.
Slightly soluble in water high mineral content (31%) zinc citrate trihydrate is specified according to food, pharma and oral care grade.
Zinc citrate dihydrate is specified according to the latest edition of the USP.
The following granulation types are available:
Zinc citrate trihydrate:
- M2050 (oral care)
Zinc citrate dihydrate:
Zinc citrate is supplied in polyethylene lined paper bags with 25 kg net weight.
- Available as dihydrate or trihydrate
- White crystalline powder
- Neutral taste
- High mineral content (31%)
- Slightly soluble in water
- Highly bioavailable
- Allergen and GMO free
- Highly bioavailable zinc source
- Antibacterial agent
- Anti-plaque in oral care products
- Baby Food, Infant Formula
- Cereals, Snacks
- Desserts, Ice Cream
- Fruit Preparations, Sweet Spreads
- Soy Products
- Fire protection
- Carbonated Soft Drinks
- Instant Drinks, Syrups
- Juice Drinks
- Sports and Energy Drinks
- Fire protection
In Europe, zinc salts of citric acid are on the positive list of Regulation (EC) No. 1925/2006 on food fortification. They are also listed in Directive 2002/46/EC of the European Parliament and the Council relating to food supplements as vitamins and mineral substances which may be used in the manufacture of food supplements. Furthermore, it is listed as mineral salt in the EU Regulation (EC) No. 609/2013 on food intended for infants and young children, food for special medical purposes, and total diet replacement for weight control.
In the USA, zinc citrate can be considered as substance classified as dietary ingredients according to FDC Act., § 201 (ff). In oral care products zinc citrate is classified as Class I active ingredient with respect to safety and a Class III active ingredient with respect to efficacy. Since 2009, Jungbunzlauer zinc citrate is “generally recognised as safe” (self-affirmed GRAS) in full compliance with the US Food, Drug, and Cosmetic Act.