Abstract

The aim of this study is to isolate phytosterol compounds from orange juice using ultrafiltration (UF) flat sheet membranes (supplied by Alfa Laval) with molecular weight cut-off (MWCO) values of 10 kDa fabricated from regenerated cellulose, polyethersulphone and fluoropolymer. A cross-flow filtration rig operated at a transmembrane pressure (TMP) of 0.5–2 bar, and a cross-flow velocity (CFV) of 0.5–1.5 m s−1. Membrane rejection towards total phytosterols, proteins, sugars were determined along with antioxidant activity. The regenerated cellulose membrane displayed the highest permeate flux (a pseudo steady-state value of 22 L m−2 h−1), with a higher fouling index (75%) and a good separation efficiency of phytosterols (32% rejection towards phytosterols) from orange juice. Although the yield of phytosterols was relatively low (40 mg/L), there is a great potential to optimise the filtration process to produce commercially relevant amount of phytosterols. All membranes investigated displayed cleaning efficiencies of >95%.

Original languageEnglish
Pages (from-to)10-21
Number of pages12
JournalFood and Bioproducts Processing
Volume113
Early online date20 Sep 2018
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Cleaning
  • Fouling
  • Nutraceuticals
  • Orange juice
  • Phytosterols
  • Ultrafiltration

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Biochemistry
  • Chemical Engineering(all)

Cite this

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title = "Membrane fouling during the fractionation of phytosterols isolated from orange juice",
abstract = "The aim of this study is to isolate phytosterol compounds from orange juice using ultrafiltration (UF) flat sheet membranes (supplied by Alfa Laval) with molecular weight cut-off (MWCO) values of 10 kDa fabricated from regenerated cellulose, polyethersulphone and fluoropolymer. A cross-flow filtration rig operated at a transmembrane pressure (TMP) of 0.5–2 bar, and a cross-flow velocity (CFV) of 0.5–1.5 m s−1. Membrane rejection towards total phytosterols, proteins, sugars were determined along with antioxidant activity. The regenerated cellulose membrane displayed the highest permeate flux (a pseudo steady-state value of 22 L m−2 h−1), with a higher fouling index (75{\%}) and a good separation efficiency of phytosterols (32{\%} rejection towards phytosterols) from orange juice. Although the yield of phytosterols was relatively low (40 mg/L), there is a great potential to optimise the filtration process to produce commercially relevant amount of phytosterols. All membranes investigated displayed cleaning efficiencies of >95{\%}.",
keywords = "Cleaning, Fouling, Nutraceuticals, Orange juice, Phytosterols, Ultrafiltration",
author = "Abd-Razak, {Nurul Hainiza} and Chew, {Y. M.John} and Bird, {Michael R.}",
year = "2019",
month = "1",
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doi = "10.1016/j.fbp.2018.09.005",
language = "English",
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journal = "Food and Bioproducts Processing",
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publisher = "Institution of Chemical Engineers",

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TY - JOUR

T1 - Membrane fouling during the fractionation of phytosterols isolated from orange juice

AU - Abd-Razak, Nurul Hainiza

AU - Chew, Y. M.John

AU - Bird, Michael R.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The aim of this study is to isolate phytosterol compounds from orange juice using ultrafiltration (UF) flat sheet membranes (supplied by Alfa Laval) with molecular weight cut-off (MWCO) values of 10 kDa fabricated from regenerated cellulose, polyethersulphone and fluoropolymer. A cross-flow filtration rig operated at a transmembrane pressure (TMP) of 0.5–2 bar, and a cross-flow velocity (CFV) of 0.5–1.5 m s−1. Membrane rejection towards total phytosterols, proteins, sugars were determined along with antioxidant activity. The regenerated cellulose membrane displayed the highest permeate flux (a pseudo steady-state value of 22 L m−2 h−1), with a higher fouling index (75%) and a good separation efficiency of phytosterols (32% rejection towards phytosterols) from orange juice. Although the yield of phytosterols was relatively low (40 mg/L), there is a great potential to optimise the filtration process to produce commercially relevant amount of phytosterols. All membranes investigated displayed cleaning efficiencies of >95%.

AB - The aim of this study is to isolate phytosterol compounds from orange juice using ultrafiltration (UF) flat sheet membranes (supplied by Alfa Laval) with molecular weight cut-off (MWCO) values of 10 kDa fabricated from regenerated cellulose, polyethersulphone and fluoropolymer. A cross-flow filtration rig operated at a transmembrane pressure (TMP) of 0.5–2 bar, and a cross-flow velocity (CFV) of 0.5–1.5 m s−1. Membrane rejection towards total phytosterols, proteins, sugars were determined along with antioxidant activity. The regenerated cellulose membrane displayed the highest permeate flux (a pseudo steady-state value of 22 L m−2 h−1), with a higher fouling index (75%) and a good separation efficiency of phytosterols (32% rejection towards phytosterols) from orange juice. Although the yield of phytosterols was relatively low (40 mg/L), there is a great potential to optimise the filtration process to produce commercially relevant amount of phytosterols. All membranes investigated displayed cleaning efficiencies of >95%.

KW - Cleaning

KW - Fouling

KW - Nutraceuticals

KW - Orange juice

KW - Phytosterols

KW - Ultrafiltration

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U2 - 10.1016/j.fbp.2018.09.005

DO - 10.1016/j.fbp.2018.09.005

M3 - Article

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