Table 5.

Use of adsorption process in different tea biomolecule separation

Process	Utility	Reference
Silica adsorbent containing β-cyclodextrin with methanol/acetonitrile/acetic acid mobile phase system	90 % EGCG recovery	Lai et al. 2012
Ultrafiltration with cellulose Acetate–titanium composite ultrafiltration membrane, adsorption by pa resin and finally elution by a mixed solvent system after water extraction	90 % of tea polyphenol recovery	Li et al. 2005
Chloromethyl, Amino, and Phenylamino Groups Functionalized Macroporous Adsorption Resins	Optimal temperature 338.15 K for maximized tea Catechin extraction and minimized caffeine retention	Liu et al. 2012
Poly(acrylamide-co-ethylene glycol dimethylacrylate) as adsorbent	Favoured adsorption of catechins with 192.85–171.11 mg/gm adsorption capacity and simultaneous decaffeination	Lu 2010
Adsorption by sawdust lignocellulose column	Separation of egcg and Caffeine in acidic conditions (ph 5.9–2.0)	Sakanaka 2003
Methacrylic acid in molecular imprinted polymers as the sorbent materials in solid phase extraction	Caffeine-theophylline Mixture and pentoxifylline-theophylline separation	Wang et al. 2004
Instant tea treatment by activated carbon (AC)	Partial decaffeination	Ye et al. 2009
Catechin adsorption by Woody tea stalk, Pine sawdust and Sugarcane bagasse	Selective tea Catechin adsorption with 209.41, 120.5 and 118.6 mg/gm adsorption capacity respectively	Ye et al. 2009
Macroporous crosslinked Poly(n-vinyl-2-pyrrolidinone) adsorbent with mobile phase ethanol	98 % tea polyphenols and 2 % caffeine recovery by adsorption with 98 mg/gm adsprption capacity	Zhao et al. 2008
Polyvinylpolypyrrolidone as adsorbent, water elution for caffeine and dimethylsulfoxide/ethanol elution for catechins	Separation of Catechin and caffeine	Dong et al. 2011