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2019 Vol.32, Issue 6 Preview Page

Research Article

Effect of Microwave Assisted Water Extraction on Insoluble Phenolic Compounds through Bioactivity of Fagopyrum esculentum
Hyun Gi Kim1†
,
Yong Ju Kim2†
,
Tung Lian Thang 1
,
Sueng Yeob Song3
,
Kuek Soo Bang2*
1Graduate Student, Department of Lifestyle Medicine, Jeonbuk National University, Iksan 54596, Korea
2Professor, Department of Oriental Medicine Resources, Jeonbuk National University, Iksan 54596, Korea
3Undergraduate Student, Department of Oriental Medicine Resources, Jeonbuk National University, Iksan 54596, Korea
* Corresponding Author
† These authors contributed equally to this work.
31 December 2019. pp. 723-729
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Abstract

Fagopyrum esculentum (Buckwheat) is a globally used alternative crop that contains several useful substances with various effects; however, many of these substances (rutin, quercetin, etc.) are water insoluble. To extract these substances, alcohols is required, which is inconvenient because these solvents cause diverse problems. Many studies are underway to achieve effective extraction of these substances with water. Among of these studies, microwave assisted water extraction (MAE) has been performed extensively. In this study, we performed the extraction in various solvents and/or microwave from Fagopyrum esculentum. The analysis of the content of useful substances and the bioactivity were performed and shown to increase in MAE. Liquid chromatography-mass was performed in order to identify of the useful water-insoluble substances. Catechin, quercetin, and rutin, which are all insoluble in water, were hardly extracted with water even on heating (4.4 ppb, 3.9 ppb and 60.3 ppb, respectively). However, MAE was found to extract much more of these substances than water (1204 ppb, 110.8 ppb and 2946 ppb, respectively). Although less efficient than alcohols, MAE showed much higher efficiency than simple water extraction. These results indicate that water extraction using microwave technology is effective in cases where it is difficult to extract useful substances using water.

Keywords
Bioactive compound
Electromagnetic wave
Fagopyrum esculentum
Liquid chromatography-mass
Solubility
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Information
  • Publisher :The Plant Resources Society of Korea
  • Publisher(Ko) :한국자원식물학회
  • Journal Title :Korean Journal of Plant Resources
  • Journal Title(Ko) :한국자원식물학회지
  • Volume : 32
  • No :6
  • Pages :723-729
  • Received Date : 2019-11-08
  • Revised Date : 2019-12-06
  • Accepted Date : 2019-12-12
  • DOI :https://doi.org/10.7732/kjpr.2019.32.6.723
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