期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 59, 期 17, 页码 9080-9093出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf201611b
关键词
Tagetes patula L.; marigold; gallic acid; linoleic acid; alpha-terthienyl; patuletin; nematicidal activity; cyst nematode; Heterodera zeae
资金
- Higher Education Commission Islamabad, Pakistan
Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including alpha-terthienyl) were detected. In studies of compounds obtained commercially, alpha-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24h. Assessment of structure activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
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