Unveiling the Benefits of Zinc Citrate Dihydrate

In today's increasingly health-conscious society, people's attention to food additives is also gradually rising. Among these, zinc citrate dihydrate is gaining attention. This article delves into the properties, uses, and impacts on human health of zinc citrate dihydrate, aiming to provide readers with a comprehensive understanding.

Zinc Citrate Dihydrate Overview:

Zinc citrate exists in two forms: dihydrate and trihydrate. It is formed by complete neutralization of citric acid with high-purity zinc sources, followed by precipitation and dehydration. The zinc citrate dihydrate chemical formula is (C6H5O7)2Zn3·2H2O. Zinc citrate finds its primary use in dental care products like toothpaste, mouthwash, and chewing gum due to its antibacterial and anti-inflammatory properties, reducing or inhibiting plaque and tartar formation. In pharmaceuticals, zinc citrate combats the common cold. Zinc is increasingly utilized in food supplements, functional foods, and beverages. The structure of zinc citrate dihydrate is as follows:

Properties:

Zinc citrate dihydrate, with CAS number 5990-32-9, appears as colorless or white crystalline powder, soluble in water, sparingly soluble in alcohol. It serves as a mineral supplement for treating or preventing zinc deficiency. The zinc citrate dihydrate molecular weight is 610.37 g/mol, with a melting point of 334 ℃.

Zinc citrate dihydrate absorption

Zinc, an essential mineral, occurs naturally in some foods, added to others, and available as a dietary supplement. Zinc citrate dihydrate is well-absorbed as a zinc supplement. Studies indicate its absorption rate is comparable to another common form, zinc gluconate, and both are better absorbed than zinc oxide. Here are the absorption details:

- Absorption Rate: Approximately 60%, considered a good indicator for oral zinc supplements. Supplements containing zinc citrate or zinc gluconate exhibit similar zinc absorption rates, around 61% in young individuals, while zinc oxide supplements have a rate of 50%. Simultaneous intake of zinc supplements with iron supplements containing 25mg or more elemental iron can decrease zinc absorption and plasma zinc concentrations. However, iron added to fortified or enriched foods does not interfere with zinc absorption.

- Factors Affecting Absorption: Several factors influence zinc absorption, including whether it's taken on an empty stomach or with food, the presence of other dietary components like phytates (which can inhibit absorption), and individual factors like gut health.

Benefits of Zinc Citrate Dihydrate:

- Versatile Applications: Zinc citrate dihydrate is utilized in dental care products due to its antibacterial and anti-inflammatory properties. It's used in food supplements, functional foods, and beverages. Additionally, it's employed in pharmaceutical and food formulations as a zinc supplement, as well as in organic synthesis, pesticides, and dyes intermediates.

- Overview of Health Benefits: Zinc citrate dihydrate offers a range of potential health benefits. It contributes to a healthy immune system, aiding in disease resistance. Moreover, zinc plays a role in wound healing and tissue repair as it's necessary for collagen synthesis, a protein vital for skin and tissue structure and support. Zinc is involved in many aspects of cellular metabolism, catalyzing hundreds of enzymes necessary for enhancing immune function, protein and DNA synthesis, wound healing, and cell signaling and division.

- Promoting Skin Health and Acne Prevention: In addition to general benefits, zinc citrate dihydrate may be particularly beneficial for skin health. Zinc possesses anti-inflammatory properties, helping calm and soothe irritated skin. Furthermore, research suggests zinc regulates sebum production, reducing inflammation associated with acne, potentially promoting cleaner, healthier skin.

Zinc citrate dihydrate solubility in water

Zinc citrate is supplied as a white to nearly white powder. It is nearly tasteless, sparingly soluble in water, soluble in dilute acid, and practically insoluble in ethanol (96%). Zinc citrate dihydrate is considered sparingly soluble in water, meaning it dissolves to a small extent, far less than highly soluble substances like sugar or salt. While exact solubility is challenging to obtain, some studies describe its solubility at approximately 3-6 milligrams per milliliter. It's noteworthy that zinc citrate exhibits reverse solubility. Zinc citrate dihydrate demonstrates inverse solubility, meaning its solubility decreases with increasing temperature, contrary to the behavior of most salts.

FAQs about Zinc Citrate Dihydrate

1. What are the uses of zinc citrate dihydrate?

Zinc citrate dihydrate, a form of zinc, is commonly used as a dietary supplement and serves as a source of zinc in certain oral care products like toothpaste and mouthwash. It is a popular supplement choice due to its gentleness on the stomach compared to other forms of zinc. In oral care, its value lies in its anti-inflammatory and antibacterial properties.

2. How is zinc citrate dihydrate absorbed by the body?

Zinc citrate dihydrate is more readily absorbed by the body compared to other forms of zinc. The citrate in zinc citrate facilitates this absorption process. Once absorbed, zinc plays a role in various bodily functions, including immune system health, wound healing, and enzymatic activity.

3. What is the chemical formula of zinc citrate dihydrate?

Zinc citrate exists in two forms: dihydrate and trihydrate. The chemical formula for zinc citrate dihydrate is (C6H5O7)2Zn3·2H2O, while for zinc citrate trihydrate, it is (C6H5O7)2Zn3·3H2O.

References:

[1] https://pubchem.ncbi.nlm.nih.gov/compound/Zinc-citrate-dihydrate

[2] https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/

[3] https://www.jungbunzlauer.com/en/products/special-salts/zinc-citrate

[4] https://www.fishersci.pt/shop/products/zinc-citrate-dihydrate-reagent-grade-zn-31-min-thermo-scientific/11313417