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- W3158210395 abstract "Abstract This paper focused on the concentration of waste fresh tea leaf extract, byproduct of tea processing, by application of reverse osmosis. The concentration was carried out by plate and frame crossflow system equipped HR98PP membrane, operating as concentration mode with full recirculation of retentate. Results show that permeate flux increased with increase in operating pressure. Modeling of permeate flux based on osmotic pressure model at 30 and 40 bar of operating pressure was proposed. Hermia's model was applied for analyzed the membrane fouling in operation process. Good agreement between complete pore blocking model and experimental data was found. The recovery yields and contents of total solid (TS), total polyphenols (PPs) and antioxidant capacity (AC), consequently effectiveness, at 40 bar of operating pressure were higher than those at 30 bar. At 40 bar of operating pressure and 7.57 of concentration factor, the recovery yields of TS, PPs, and AC were 83.7, 85.1, and 79.6%, respectively. Contents of TS, PPs, and AC in retentate and permeate were 64.62 and 1.91 g/L; 25.82 and 0.61 g GAE/L; 97.87 and 3.35 mM TEAC, respectively. Maximum theoretical content of TS at 40 bar was estimated as 341 g/L. Results imply that it is potential to apply reverse osmosis for concentration of waste fresh tea leaf extract to produce instant powder with high content of polyphenols. Practical applications The concentration of waste fresh tea leaf extract by reverse osmosis membrane Modeling of permeate flux in reverse osmosis Fouling mechanism was analyzed by Hermia's model. Recovery yields and contents of total solid, total polyphenols and antioxidant capacity in concentrate against concentration factor were estimated." @default.
- W3158210395 created "2021-05-10" @default.
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- W3158210395 date "2021-05-03" @default.
- W3158210395 modified "2023-09-25" @default.
- W3158210395 title "Technical assessment of reverse osmosis for concentration of fresh tea leaf extract" @default.
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- W3158210395 doi "https://doi.org/10.1111/jfpe.13725" @default.
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