LACTIC ACID
Kaynaklar / Kullanımlar
Gıdaların, ilaçların ve boyaların üretiminde çözücü ve asitleştirici olarak kullanılır; Ayrıca yünlü eşya baskısında bir mordan olarak, bir lehimleme flaksı, bir hava alma ajanı ve fenolik reçineler için bir katalizör olarak kullanılır; Ayrıca deri tabaklamada, yağ kuyusu asitleştirmede ve bitki büyüme düzenleyicisinde kullanılır.
Laktik asit, gıda koruyucu, kürleme maddesi ve tatlandırıcı madde olarak kullanılır.
İşlenmiş gıdalardaki bir bileşendir ve et işleme sırasında dekontaminasyon maddesi olarak kullanılır.
Laktik asit ticari olarak glikoz, sükroz veya laktoz gibi karbonhidratların fermentasyonu veya kimyasal sentez yoluyla üretilir.
"Süt asidi" olarak da adlandırılan laktik asit, aşağıdaki kimyasal formüle sahip organik bir asittir: CH3CH (OH) CO2H.
Uluslararası Saf ve Uygulamalı Kimya Birliği (IUPAC) tarafından verilen resmi isim 2-hidroksipropanoik asittir.
Bu önemli asit doğal olarak üretilebilir (Martinez ve diğerleri, 2013), ancak önemi sentetik üretimlerle ilişkilidir.
Saf laktik asit renksiz ve hidroskopik bir sıvıdır; sudaki kısmi ayrışması ve ilişkili asit ayrışma sabiti (Ka = 1.38 10−4) nedeniyle zayıf bir asit olarak tanımlanabilir.
2-Hydroxypropanoic acid
Lactic acid
Laktik asit
Milk acid
Süt asidi
EC / List no.: 200-018-0
CAS no.: 50-21-5
Mol. formula: C3H6O3
Lactic acid was discovered in 1780 by Swedish chemist, Carl Wilhelm Scheele, who isolated the lactic acid from sour milk as an impure brown syrup and gave it a name based on its origins: 'Mjölksyra'.
The French scientist Frémy produced lactic acid by fermentation and this gave rise to industrial production in 1881.
Lactic acid is produced by the fermentation of sugar and water or by chemical process and is commercially usually sold as a liquid.
Pure and anhydrous racemic lactic acid is a white crystalline solid with a low melting point. Lactic acid has two optical forms, L(+) and D(-) .
L(+)-lactic acid is the biological isomer as it is naturally present in the human body.
How is lactic acid produced?
Lactic acid can be produced naturally or synthetically. Commercial lactic acid is produced naturally by fermentation of carbohydrates such as glucose, sucrose, or lactose.
The current world market leader in the commercial production of lactic acid is Corbion Purac: www.corbion.com.
The natural production process is shown in the figure below.
Wih the addition of lime or chalk, the raw materials are fermented in a fermenter and crude calcium lactate is formed.
The gypsum is separated from the crude calcium lactate, which results in crude lactic acid.
The crude lactic acid is purified and concentrated and L(+) lactic acid is the result.
LACTIC ACID, is an organic acid with applications in beer production as well as the cosmetic, pharmaceutical, food and chemical industries.
Commonly used as a preservative and antioxidant.
It also has uses as a fuel additive, chemical intermediate, acidity regulator, and disinfectant.
One specific use of LACTIC ACID is in I.V solutions, where it is an electrolyte to help replenish the bodies fluids.
It is also used in dialysis solutions, which results in a lower incidence of side effects compared to Sodium Acetate which can also be used.
LACTIC ACID comes in both R (D-) and S (L+) enantiomers which can be manufactured individually to near perfect optical purity.
This means LACTIC ACID is great in the production of other products which require a specific stereochemistry.
LACTIC ACID is used frequently in the cosmetic industry due to the effect of promoting collagen production, helping to firm the skin against wrinkles and sagging.
It can also cause micro peeling, which can help reduce various scars and age spots.
This is a great solution for people with sensitive or dry skin where exfoliants don’t work.
