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Canola oil is an excellent vehicle for eliminating pesticide residues in aqueous ginseng extract

Title
Canola oil is an excellent vehicle for eliminating pesticide residues in aqueous ginseng extract
Authors
Cha, Kyu-MinLee, Eun-SilKim, Il-WoungCho, Hyun-KiRyu, Ji-HoonKim, Si-Kwan
Ewha Authors
김일웅
Issue Date
2016
Journal Title
JOURNAL OF GINSENG RESEARCH
ISSN
1226-8453JCR Link2093-4947JCR Link
Citation
vol. 40, no. 3, pp. 292 - 299
Keywords
canola oilPanax ginseng extractpesticide residue eliminationtwo-phase partition chromatographyvegetable oil
Publisher
KOREAN SOC GINSENG
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
Background: We previously reported that two-phase partition chromatography between ginseng water extract and soybean oil efficiently eliminated pesticide residues. However, an undesirable odor and an unpalatable taste unique to soybean oil were two major disadvantages of the method. This study was carried out to find an alternative vegetable oil that is cost effective, labor effective, and efficient without leaving an undesirable taste and smell. Methods: We employed six vegetable oils that were available at a grocery store. A 1-mL sample of the corresponding oil containing a total of 32 pesticides, representing four categories, was mixed with 10% aqueous ginseng extract (20 mL) and equivalent vegetable oil (7 mL) in Falcon tubes. The final concentration of the pesticides in the mixture (28 mL) was adjusted to approximately 2 ppm. In addition, pesticides for spiking were clustered depending on the analytical equipment (GC/HPLC), detection mode (electron capture detector/nitrogenephosphorus detector), or retention time used. Samples were harvested and subjected to quantitative analysis of the pesticides. Results: Soybean oil demonstrated the highest efficiency in partitioning pesticide residues in the ginseng extract to the oil phase. However, canola oil gave the best result in an organoleptic test due to the lack of undesirable odor and unpalatable taste. Furthermore, the qualitative and quantitative changes of ginsenosides evaluated by TLC and HPLC, respectively, revealed no notable change before or after canola oil treatment. Conclusion: We suggest that canola oil is an excellent vehicle with respect to its organoleptic property, cost-effectiveness and efficiency of eliminating pesticide residues in ginseng extract. Copyright (C) 2015, The Korean Society of Ginseng, Published by Elsevier.
DOI
10.1016/j.jgr.2015.09.007
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연구기관 > 의과학연구소 > Journal papers
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