Today, the experiment of fusing tea polyphenols with disinfection and sterilization and odor elimination formulas was carried out.
Tea polyphenol selection: EGCG content greater than 99%, mesh number 80-100 mesh.
Dissolve EGCG in water to obtain a faint milky white liquid.
However, when the pale milky white EGCG solution is mixed with an acidic liquid containing oxidizing substances (PH value 4-5), the overall solution changes color similar to black tea in seconds.
After discussion and continued experiments, it has been concluded that tea polyphenols react with a nano-metal oxide component. Tea polyphenols are reducing substances, and their mechanism of action is similar to sacrificing themselves for oxidation, thereby protecting the substance from oxidation and deterioration. Tea polyphenols act as if similar to the effect of zinc powder in epoxy zinc-rich primers, sacrificing themselves to protect others.
Through this experiment, it can be judged that when the tea polyphenols are integrated into the formulation of shampoos, cosmetics, masks and other products, oxidizing substances cannot be added, even if the amount of these substances is added within the standard and safety range, it will cause the color of liquids and pastes to change in seconds, and some molecular bonds and bio-bases of tea polyphenols will interact with oxidizing substances.
From another level, the disinfection and cosmetics with the addition of tea polyphenols are safer, because the formulator cannot add other parts of the chemical oxidation disinfection and fungicide.
Next time, debug a few natural green tea polyphenol disinfectants for evaluation, please pay attention to and comment on the guidance.
The picture above shows the appearance of the tea polyphenol EGCG99 aqueous solution
The above two figures show that the tea polyphenol EGCG99 grade solution changes color in seconds after adding oxidizing substances.
In fact, not only tea polyphenols, many plant extracts can not be mixed with oxidizing substances, not only discoloration, but also may fail, this reason has a certain relationship with the PH value, but the correlation is not large, everyone discussed and analyzed. (Captain)