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Comparison of subcritical water and organic solvents for extracting kava lactones from kava root.
J Chromatogr A. 2001 Jul 20; 923(1-2):187-94.JC

Abstract

Subcritical water extraction of lactones from a kava (Piper metlhysticum) root was compared to a Soxhlet extraction with water, to boiling in water, and to a sonication in acetone. For ground kava (250-500 microm), 2 h of subcritical water extraction were required for a complete extraction at 100 degrees C, while at 175 degrees C, 20 min were sufficient. For a complete extraction of the unground (shredded) kava, the time of extraction was extended to 40 min at 175 degrees C. Boiling for 2 h and extraction with Soxhlet apparatus for 6 h, both of which employed water at atmospheric pressure, produced yields 40-60% lower than those obtained with subcritical water. With unground kava, 40 min of subcritical water extraction yielded essentially the same recoveries of lactones as 18 h of sonication with acetone, methylene chloride, or methanol.

Authors+Show Affiliations

Energy and Environmental Research Center, University of North Dakota, Grand Forks 58202, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

11510541

Citation

Kubátová, A, et al. "Comparison of Subcritical Water and Organic Solvents for Extracting Kava Lactones From Kava Root." Journal of Chromatography. A, vol. 923, no. 1-2, 2001, pp. 187-94.
Kubátová A, Miller DJ, Hawthorne SB. Comparison of subcritical water and organic solvents for extracting kava lactones from kava root. J Chromatogr A. 2001;923(1-2):187-94.
Kubátová, A., Miller, D. J., & Hawthorne, S. B. (2001). Comparison of subcritical water and organic solvents for extracting kava lactones from kava root. Journal of Chromatography. A, 923(1-2), 187-94.
Kubátová A, Miller DJ, Hawthorne SB. Comparison of Subcritical Water and Organic Solvents for Extracting Kava Lactones From Kava Root. J Chromatogr A. 2001 Jul 20;923(1-2):187-94. PubMed PMID: 11510541.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of subcritical water and organic solvents for extracting kava lactones from kava root. AU - Kubátová,A, AU - Miller,D J, AU - Hawthorne,S B, PY - 2001/8/21/pubmed PY - 2002/1/30/medline PY - 2001/8/21/entrez SP - 187 EP - 94 JF - Journal of chromatography. A JO - J Chromatogr A VL - 923 IS - 1-2 N2 - Subcritical water extraction of lactones from a kava (Piper metlhysticum) root was compared to a Soxhlet extraction with water, to boiling in water, and to a sonication in acetone. For ground kava (250-500 microm), 2 h of subcritical water extraction were required for a complete extraction at 100 degrees C, while at 175 degrees C, 20 min were sufficient. For a complete extraction of the unground (shredded) kava, the time of extraction was extended to 40 min at 175 degrees C. Boiling for 2 h and extraction with Soxhlet apparatus for 6 h, both of which employed water at atmospheric pressure, produced yields 40-60% lower than those obtained with subcritical water. With unground kava, 40 min of subcritical water extraction yielded essentially the same recoveries of lactones as 18 h of sonication with acetone, methylene chloride, or methanol. SN - 0021-9673 UR - https://www.unboundmedicine.com/medline/citation/11510541/Comparison_of_subcritical_water_and_organic_solvents_for_extracting_kava_lactones_from_kava_root_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(01)00979-7 DB - PRIME DP - Unbound Medicine ER -