The foaming agent was extracted from tea saponin, a camellia seed extract. Tea saponin is a natural nonionic surfactant extracted from the fruit of the Camellia genus. Japan first isolated tea saponin crystals from tea seeds in 1931 and obtained them in 1952. China began research in the late 1950s, and it was not until 1979 that the technology for industrial production was established.
The products with more than 80% saponin content are light yellow amorphous powder, ph=6 ~ 7; The pure effect of tea saponin is a colourless fine columnar crystal, melting point 224℃; The products with more than 40% saponin content are brown, red oily transparent liquid, ph=7 ~ 8. Tea saponin in an aqueous solution has solid foam power and a certain foaming height, even at relatively low concentrations. If the concentration is increased, the foam is durable and relatively stable. For example, the foam produced by 0.05% tea saponin aqueous solution does not dissipate after 30min of oscillation, while the foam produced by 0.06% high-quality soap aqueous solution dissipates after 14min. Pure tea saponin tastes bitter and spicy, has specific hemolytic and fish toxicity, is insoluble in cold water, and quickly dissolves in an alkaline solution. It is not sensitive to water hardness, and its foam force is unaffected. Its foaming ability is due to the increase in concentration and improvement. Tea saponin produced by the foam has excellent stability; a long time without foam, 2880min (48h) can still maintain 14㎜ foam height (0.005% solution); this is the synthesis of anionic or non-ionizing surfactant, in any case, is difficult to reach. Table 3-3 shows the steady height of tea saponin foam at different times. As can be seen from the table, its foam dissipation is very slow and stable. The foaming size of tea saponin is smaller than that of synthetic nonionic or anionic surfactants. Still, its bubble stability is not comparable to synthetic nonionic or anionic surfactants. Table 3-4 is now used to compare tea saponin's foaming and foaming properties. It can be seen from the table that tea saponin has impressive foam stability. If you are looking for high quality, high purity and cost-effective foaming agent, or if you require the latest price of foaming agent, please feel free to email contact mis-asia.
