Preparation of Chlorophyll-free Young Barley Leaf Extract Powders Using Supercritical Carbon Dioxide Modified with Cosolvent

Jin Hee Hong; Seungjoo Haam; Heaung Shig Oh; Giobin Lim; Jong Hoon Ryu

doi:10.1007/s12257-019-0236-x

Preparation of Chlorophyll-free Young Barley Leaf Extract Powders Using Supercritical Carbon Dioxide Modified with Cosolvent

Jin Hee Hong, Seungjoo Haam, Heaung Shig Oh, Giobin Lim, Jong Hoon Ryu

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, we attempted to prepare chlorophyll-free young barley leaf extract powders using three different supercritical carbon dioxide (SCCO₂) drying processes. The pure SCCO₂ drying process for a methanolic extract solution resulted in a ~30% increase in the antioxidant (saponarin and isovitexin) content and a ~75% decrease in the chlorophyll content compared to a solvent evaporation method. The drying process with ethanol-modified SCCO₂ increased the antioxidant content considerably and completely removed the chlorophylls. However, this process could not dry an aqueous ethanolic extract solution with a more than 30% water content. The ethanol-modified SCCO₂ drying process that employed a periodic flush with pure SCCO₂ was found to effectively dry an aqueous ethanolic extract solution with more than 30% water content.

Original language	English
Pages (from-to)	997-1006
Number of pages	10
Journal	Biotechnology and Bioprocess Engineering
Volume	24
Issue number	6
DOIs	https://doi.org/10.1007/s12257-019-0236-x
Publication status	Published - 2019 Nov 1

Bibliographical note

Funding Information:
This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ00950201)” Rural Development Administration, Republic of Korea. Publisher’s Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Publisher Copyright:
© 2019, The Korean Society for Biotechnology and Bioengineering and Springer.

All Science Journal Classification (ASJC) codes

Biotechnology
Bioengineering
Applied Microbiology and Biotechnology
Biomedical Engineering

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title = "Preparation of Chlorophyll-free Young Barley Leaf Extract Powders Using Supercritical Carbon Dioxide Modified with Cosolvent",

abstract = "In this study, we attempted to prepare chlorophyll-free young barley leaf extract powders using three different supercritical carbon dioxide (SCCO2) drying processes. The pure SCCO2 drying process for a methanolic extract solution resulted in a ~30% increase in the antioxidant (saponarin and isovitexin) content and a ~75% decrease in the chlorophyll content compared to a solvent evaporation method. The drying process with ethanol-modified SCCO2 increased the antioxidant content considerably and completely removed the chlorophylls. However, this process could not dry an aqueous ethanolic extract solution with a more than 30% water content. The ethanol-modified SCCO2 drying process that employed a periodic flush with pure SCCO2 was found to effectively dry an aqueous ethanolic extract solution with more than 30% water content.",

author = "Hong, {Jin Hee} and Seungjoo Haam and Oh, {Heaung Shig} and Giobin Lim and Ryu, {Jong Hoon}",

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AU - Lim, Giobin

AU - Ryu, Jong Hoon

N1 - Funding Information: This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ00950201)” Rural Development Administration, Republic of Korea. Publisher’s Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Publisher Copyright: © 2019, The Korean Society for Biotechnology and Bioengineering and Springer.

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N2 - In this study, we attempted to prepare chlorophyll-free young barley leaf extract powders using three different supercritical carbon dioxide (SCCO2) drying processes. The pure SCCO2 drying process for a methanolic extract solution resulted in a ~30% increase in the antioxidant (saponarin and isovitexin) content and a ~75% decrease in the chlorophyll content compared to a solvent evaporation method. The drying process with ethanol-modified SCCO2 increased the antioxidant content considerably and completely removed the chlorophylls. However, this process could not dry an aqueous ethanolic extract solution with a more than 30% water content. The ethanol-modified SCCO2 drying process that employed a periodic flush with pure SCCO2 was found to effectively dry an aqueous ethanolic extract solution with more than 30% water content.

AB - In this study, we attempted to prepare chlorophyll-free young barley leaf extract powders using three different supercritical carbon dioxide (SCCO2) drying processes. The pure SCCO2 drying process for a methanolic extract solution resulted in a ~30% increase in the antioxidant (saponarin and isovitexin) content and a ~75% decrease in the chlorophyll content compared to a solvent evaporation method. The drying process with ethanol-modified SCCO2 increased the antioxidant content considerably and completely removed the chlorophylls. However, this process could not dry an aqueous ethanolic extract solution with a more than 30% water content. The ethanol-modified SCCO2 drying process that employed a periodic flush with pure SCCO2 was found to effectively dry an aqueous ethanolic extract solution with more than 30% water content.

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Preparation of Chlorophyll-free Young Barley Leaf Extract Powders Using Supercritical Carbon Dioxide Modified with Cosolvent

Abstract

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