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Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.

BACKGROUND: Coconut water has grown in popularity among people as a ready-to-drink healthy beverage. Nevertheless, its future export expansion is restricted by high operating costs as large volumes of coconut water have to be handled during exporting and for its storage. Besides, large coconut water...

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Main Authors: Liew, Zhen-Shen, Ho, Yeek-Chia, Lau, Woei Jye, Youravong, Wirote, Sirinupong, Tippawan, Liang, Yong Yeow
Format: Article
Published: John Wiley and Sons Ltd. 2023
Subjects:
Q Science (General)
Online Access:http://eprints.utm.my/106343/
http://dx.doi.org/10.1002/jctb.7391
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spelling my.utm.1063432024-06-29T06:52:34Z http://eprints.utm.my/106343/ Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process. Liew, Zhen-Shen Ho, Yeek-Chia Lau, Woei Jye Youravong, Wirote Sirinupong, Tippawan Liang, Yong Yeow Q Science (General) BACKGROUND: Coconut water has grown in popularity among people as a ready-to-drink healthy beverage. Nevertheless, its future export expansion is restricted by high operating costs as large volumes of coconut water have to be handled during exporting and for its storage. Besides, large coconut water volumes also consume high energy during the pasteurization/sterilization process. Thus, in this work, we evaluated the potential of employing polymeric membranes for the concentration of coconut water at room temperature via either a pressure-driven or osmotically driven process. RESULTS: Our results indicated that the membrane that was tested under reverse osmosis (RO) mode at 25 bar could significantly concentrate coconut water by reducing its original volume by up to half, with negligible loss of ions/minerals. Upon completion of the RO process, Brix and conductivity of the coconut water were increased by 90% and 61.4%, respectively. As a comparison, the membrane tested under pressure-retarded osmosis (PRO) mode was only able to reduce the volume of coconut water by ~12%. Although coconut water concentration via PRO operation does not require an external driving force, this process suffers from several significant drawbacks, including reverse draw solute flux and the requirement for draw solution generation. CONCLUSION: Based on the results obtained, it can be concluded that the RO membrane process is still the most reliable and practical method of concentrating fruit juice, and its performance could be further enhanced using a high-flux polymeric membrane or through process optimization. John Wiley and Sons Ltd. 2023-07 Article PeerReviewed Liew, Zhen-Shen and Ho, Yeek-Chia and Lau, Woei Jye and Youravong, Wirote and Sirinupong, Tippawan and Liang, Yong Yeow (2023) Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process. Journal of Chemical Technology and Biotechnology, 98 (7). pp. 1722-1730. ISSN 0268-2575 http://dx.doi.org/10.1002/jctb.7391 DOI: 10.1002/jctb.7391
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science (General)
spellingShingle Q Science (General)
Liew, Zhen-Shen
Ho, Yeek-Chia
Lau, Woei Jye
Youravong, Wirote
Sirinupong, Tippawan
Liang, Yong Yeow
Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
description BACKGROUND: Coconut water has grown in popularity among people as a ready-to-drink healthy beverage. Nevertheless, its future export expansion is restricted by high operating costs as large volumes of coconut water have to be handled during exporting and for its storage. Besides, large coconut water volumes also consume high energy during the pasteurization/sterilization process. Thus, in this work, we evaluated the potential of employing polymeric membranes for the concentration of coconut water at room temperature via either a pressure-driven or osmotically driven process. RESULTS: Our results indicated that the membrane that was tested under reverse osmosis (RO) mode at 25 bar could significantly concentrate coconut water by reducing its original volume by up to half, with negligible loss of ions/minerals. Upon completion of the RO process, Brix and conductivity of the coconut water were increased by 90% and 61.4%, respectively. As a comparison, the membrane tested under pressure-retarded osmosis (PRO) mode was only able to reduce the volume of coconut water by ~12%. Although coconut water concentration via PRO operation does not require an external driving force, this process suffers from several significant drawbacks, including reverse draw solute flux and the requirement for draw solution generation. CONCLUSION: Based on the results obtained, it can be concluded that the RO membrane process is still the most reliable and practical method of concentrating fruit juice, and its performance could be further enhanced using a high-flux polymeric membrane or through process optimization.
format Article
author Liew, Zhen-Shen
Ho, Yeek-Chia
Lau, Woei Jye
Youravong, Wirote
Sirinupong, Tippawan
Liang, Yong Yeow
author_facet Liew, Zhen-Shen
Ho, Yeek-Chia
Lau, Woei Jye
Youravong, Wirote
Sirinupong, Tippawan
Liang, Yong Yeow
author_sort Liew, Zhen-Shen
title Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
title_short Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
title_full Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
title_fullStr Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
title_full_unstemmed Investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
title_sort investigations on membrane performance for coconut water concentration under pressure and by osmotically driven process.
publisher John Wiley and Sons Ltd.
publishDate 2023
url http://eprints.utm.my/106343/
http://dx.doi.org/10.1002/jctb.7391
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score 13.211869

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