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Chemical compounds called acids are commonly found in nature and in the human body. Their characteristic feature is that they contain hydrogen atoms that dissociate easily. Acids can be classified as organic and inorganic. The organic group includes, among others, lactic acid. What is lactic acid? What are its properties and applications? You will find answers to these questions in this article. Published: 09-20-2022 What is lactic acid? Much has been written about lactic acid. The name of this compound comes from the curdled milk in which it is found. Chemists also refer to it as hydroxy acid, α-hydroxypropionic acid, or 2-hydroxypropanoic acid. It can also be found under various other names such as: lactic acid or acidum lacticum . What are the characteristics of lactic acid? The molecular formula of the compound is: C 3 H 6 O 3 . It belongs to the group of hydroxy acids, which means that in its structure it contains a carboxyl group and a hydroxyl group. Lactic acid – occurrence Lactic acid is a compound that we know in early childhood. It is found, among others, in popular food products, such as: sour milk, certain dairy products (yogurt, kefir, buttermilk), pickles (sauerkraut, cucumbers, peppers, etc.), wines and fermented drinks. Lactic acid is also produced naturally in muscles under hypoxia and when the body is depleted due to intense physical activity.
This applies to both the human and animal organism. Under the influence of intense movement, glycolysis occurs in the muscles, that is, the breakdown of a polysaccharide called glycogen, which provides the body with the necessary vital energy. In laboratory conditions, lactic acid can be obtained by fermentation of sweet solutions using bacteria - lactobacilli. How do I get a sweet taste out of the solution? For this purpose, laboratory technicians often use sucrose, various types of starch, or starch syrup. Chemists use calcium carbonate to neutralize the acid formed. Lactic acid: physical and CZ Leads chemical properties How to recognize lactic acid? The physical properties of lactic acid, such as its distinctive sour taste and whey smell, mean that even a layman can recognize this compound. A-hydroxypropionic acid can occur in two forms: clear or yellowish liquid soluble crystals. What other physical and chemical properties does lactic acid have? It has a molecular weight of 90.08 g/mol, starts to boil at 127°C, melts at 17 °C, It is optically active, dissolves in water and ethyl alcohol, it is hygroscopic, Acidifies various substances and products. What is the pH of lactic acid? The pH of lactic acid in solution is 3.86, making it weaker than many other acids, such as hydrochloric acid or citric acid.
Lactic acid in cosmetics – properties Lactic acid is readily sought after by manufacturers and specialists in the cosmetic and beauty industry. The chemical and physical properties of this compound have been known and appreciated for generations! This organic acid is a component of cosmetics, peels, capsules, globules and preparations with a regenerating and moisturizing effect. In modern cosmetics, there is a shift towards natural substances. It is not surprising that interest in lactic acid, which belongs to the group of the highest quality antioxidants, is growing significantly. As a cosmetic additive, the acid works in a multipurpose way: exfoliates and softens the epidermis, shrink pores, eliminates microorganisms, supports the regeneration process of irritated or damaged tissues, facilitates the regeneration of the bacterial flora, slows down the aging process of cells. Lactic acid – action People have appreciated the beneficial effects of lactic acid for years. The compound contained in pickles and dairy products has a very positive effect on the function of the human body. Thanks to its presence in the body, the amount of pathogenic bacteria is reduced and the metabolism is accelerated, which improves the general condition and increases appetite. Lactic acid facilitates the absorption of calcium and iron. The effective absorption of minerals contributes to improving the condition of bones, muscles, joints and the cardiovascular system. What other effects does lactic acid have? In addition to its detoxifying function, it also has antioxidant properties. It is a natural preservative and acidity regulator that gives food products a specific flavor and aroma.
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發表於 2024-3-16 18:52:49