Many people should have this experience. The food ingredients are carefully cleaned for hygiene. As a result, the more the water is washed, the more color it becomes. This is how it happened? Did you buy dyed food from unscrupulous merchants?
”fading” is also a good food
Fruits and plants often contain natural pigments. Some of these pigments are fat-soluble pigments and some are water-soluble pigments.
black rice, purple rice, black peanuts, black corn, mulberries, purple cabbage, strawberries, blueberries and other foods are rich in water-soluble pigments-anthocyanins. When these foods are washed with water, it is easy to cause damage to the food cells, anthocyanins will dissolve out, and the phenomenon of”fading” will occur.
Anthocyanins will have different colors when they encounter different water.
Although some foods contain anthocyanins, the cell structure is relatively tight, so the color will not fade after a short period of washing. However, if it is soaked for a long time, the outer cells of the food will gradually absorb water, and the anthocyanins will also slowly dissolve, causing the water to change color.
Therefore, when the water changes color when the food is washed, it may not necessarily be the fake and inferior food that has been dyed illegally.
Beautiful and delicious meals
In life, when everyone talks about food dyeing, it is easy to change color, which seems to be unsafe. In fact, all kinds of beautiful and delicious processed foods in life are inseparable from food colorants.
At present, there are more than 60 kinds of food colorants (that is, pigments commonly referred to by everyone) in the world. According to their sources and properties, they can be divided into two categories:natural colorants and synthetic colorants.
Natural pigments can come from plants. The yellow color of curry comes from the color of turmeric. Turmeric is a common source of natural yellow pigments.
Some natural pigments come from animals or minerals. For example, cochineal red is extracted from cochineal insects. It is stable and has high color saturation. It is mostly used in orange, red or purple food. For 1g of cochineal red dye, about 155 cochineals are needed.
Artificial synthetic pigments refer to organic pigments prepared by artificial chemical synthesis methods, mainly using aniline dyes separated from coal tar as raw materials. Color expressiveness will be much better than natural pigments.
For example, caramel coloring that makes food brownish brown is widely used in foods such as beer, brown bread, sauces and cola beverages.
Regardless of whether natural colorants or synthetic colorants are consumed, the country must conduct a strict risk assessment on their safety. Only through risk assessment and approval can they be used as edible colorants.
To learn more about the scope of use and use limits of edible colorants, please pay attention to GB 2760-2014″National Food Safety Standards and Food Additives Use Standards”.
Consumers don’t need to worry too much about the safety of colorants for food purchased through formal channels~
Contribution:Municipal Quality Standards Institute