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Technical assessment of reverse osmosis for concentration of fresh tea leaf extract.

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Title: Technical assessment of reverse osmosis for concentration of fresh tea leaf extract.
Authors: Lai, Quoc Dat1,2 (AUTHOR) lqdat@hcmut.edu.vn, Doan, Ngoc Thuc Trinh1,2 (AUTHOR), Nguyen, Hoang Dung1,2 (AUTHOR)
Source: Journal of Food Process Engineering. Jul2021, Vol. 44 Issue 7, p1-9. 9p.
Subjects: Tea extracts, Oxidant status, Reverse osmosis, Reverse osmosis process (Sewage purification), Osmotic pressure
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 membraneModeling of permeate flux in reverse osmosisFouling 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. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Food Process Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Technical assessment of reverse osmosis for concentration of fresh tea leaf extract.
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  Data: <searchLink fieldCode="AR" term="%22Lai%2C+Quoc+Dat%22">Lai, Quoc Dat</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> lqdat@hcmut.edu.vn</i><br /><searchLink fieldCode="AR" term="%22Doan%2C+Ngoc+Thuc+Trinh%22">Doan, Ngoc Thuc Trinh</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nguyen%2C+Hoang+Dung%22">Nguyen, Hoang Dung</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Food+Process+Engineering%22">Journal of Food Process Engineering</searchLink>. Jul2021, Vol. 44 Issue 7, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Tea+extracts%22">Tea extracts</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidant+status%22">Oxidant status</searchLink><br /><searchLink fieldCode="DE" term="%22Reverse+osmosis%22">Reverse osmosis</searchLink><br /><searchLink fieldCode="DE" term="%22Reverse+osmosis+process+%28Sewage+purification%29%22">Reverse osmosis process (Sewage purification)</searchLink><br /><searchLink fieldCode="DE" term="%22Osmotic+pressure%22">Osmotic pressure</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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 membraneModeling of permeate flux in reverse osmosisFouling 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. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Food Process Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1111/jfpe.13725
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 9
        StartPage: 1
    Subjects:
      – SubjectFull: Tea extracts
        Type: general
      – SubjectFull: Oxidant status
        Type: general
      – SubjectFull: Reverse osmosis
        Type: general
      – SubjectFull: Reverse osmosis process (Sewage purification)
        Type: general
      – SubjectFull: Osmotic pressure
        Type: general
    Titles:
      – TitleFull: Technical assessment of reverse osmosis for concentration of fresh tea leaf extract.
        Type: main
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          Name:
            NameFull: Lai, Quoc Dat
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            NameFull: Doan, Ngoc Thuc Trinh
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          Name:
            NameFull: Nguyen, Hoang Dung
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          Dates:
            – D: 01
              M: 07
              Text: Jul2021
              Type: published
              Y: 2021
          Identifiers:
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              Value: 01458876
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              Value: 44
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            – TitleFull: Journal of Food Process Engineering
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