Lacmus (E121) – what is it?
Lacmus, also known as E121, is a natural dye that has long been used in a variety of fields, from chemicals to food. Its unique characteristic is that it changes color depending on the pH of the environment – from red in acidic environments to blue in alkalis. It is extracted from a genus of lichens, mainly the species Roccella tinctoria.
In the food industry, lacmus is rarely used as a food colorant, mainly because of its sensitivity to pH, which can lead to unpredictable color changes in food products. However, it does find use in some niche products and as a pH indicator in laboratories.
Properties of Lakmus
Lakmus is soluble in water and alcohol, and its greatest characteristic is its color change depending on the acidity of the environment. It is an all-natural dye, which may be attractive to consumers looking for products free of synthetic additives.
Uses of Lacmus
The main use of lacmus in industry is its role as a pH indicator. In the food industry, its use is limited, but it can be used in educational food experiment kits or as a natural colorant in specialized products.
Where to buy Lakmus?
Lakmus is mainly available in specialty stores, such as laboratory chemical stores or science hobby stores. It can also be found in some online stores offering food additives or educational materials. It is worth contacting the sales department of Foodcom S.A.
Lacmus and its functions in food
Although lacmus is not commonly used as a colorant in the food industry, it has its own unique uses. It can be used for educational purposes, to demonstrate the effect of pH on dyes, and in niche food products it is used to impart a natural color depending on the acidity of the ingredients.
