Background
Tea, as one of the three traditional drinks in the world, is very popular among people. Modern scientific research reveals that there are kinds of biologically active ingredients in tea leaves. The active tea extracts can be as antioxidant, anti-aging, anti-cancer, anti-cardiovascular diseases, etc. For example, green tea catechins (GTC), which comprise four major epicatechin derivatives; namely, epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG), and epigallocatechin gallate (EGCG).
Tea deep processing and comprehensive utilization have become one of the hot topics in the Chinese medicine branch and tea industry. Tea deep processing technology can be roughly divided into mechanical processing, physical processing, chemical and biochemical processing, and comprehensive technical processing. In the traditional processing method clarification is ineffective and the product taste is poor due to low precision filtration and chemical agent additives. However, The new technology of membrane separation including microfiltration, ultrafiltration, nanofiltration and reverse osmosis technologyis is applied in the deep processing of tea, which overcomes the shortcomings of traditional techniques and can extract various functional components in the tea to produce concentrated innovative products such as tea concentration drinks and high-purity instant tea, reducing production costs and improving product quality.
Process Diagram
Process Advantages
● High filtration precision
● High concentration of tea juice
● No need to add chemicals
● Strong anti-pollution ability
● Simplified process
● Low energy consumption
● Easy maitenance
Process Result of Instant Tea by integrated membrane:
● Light transmittance after UF: 98% (660nm)
● Tea Polyphenol retention rate after RO: 98 %
● Amino acid retention rate after RO: 98.5%
● Caffeine retention rate after RO: 99%
If you need more details about ceramic membrane process for tea processing ,please do not hesitate to contact with us or send email to us. TFT is willing to communicate and share information with you on engineering process issues. We are looking forward to developing more market and more applications with your help, bring this new technology to end users, create more values and benefits for all parties.
