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Additional studies on the antifungal activity of a methanol extract of Ipomoea carnea subsp. fistulosa and octadecyl p-coumarates

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Title Additional studies on the antifungal activity of a methanol extract of Ipomoea carnea subsp. fistulosa and octadecyl p-coumarates
 
Creator Eugene Sebastian J Nidiry, Girija Ganeshan, A.N. Lokesha and N. Ramachandran
 
Subject Ipomoea carnea subsp. fistulosa, Octadecyl p-coumarates, Antifungal activity, Phytophthora nicotianae, Cercospora capsici
 
Description Not Available
Background: Ipomoea carnea subsp. fistulosa is a plant native to South America, but sparsely distributed in India and Bangladesh. Aphrodisiac, purgative, cathartic and sore curing properties have been attributed to the plant. Although there were several papers on the antifungal and antibacterial activities of on the crude extractives of the plant, the first report on the bioassay monitored isolation and characterization of the chief antifungal compounds as a mixture of E and Z isomers of octadecyl p-coumarates
was published from this Institute. Material and Methods: The methanol extractive of Ipomoea carnea subsp. fistulosa exhibited antifungal activity against the mycelial growth of Phytophthora nictotiana by poisoned food technique. This is in addition to the reported activity against Colletotrichum gloeosporioides. Results and Discussion: Octadecyl p-coumarates isolated from the plant by column chromatography followed by HPLC exhibited activity against the mycelial growth of Cercospora capsici. This is in addition
to the reported activity of octadecyl p-coumarates against the spore germination of Alternaria alternata, Alternaria porri and Cladosporium cucumerinum. Conclusion: Additional studies conducted with the crude extractive of Ipomoea carnea subsp. fistulosa confirmed its antifungal activity against Phytophthora nicotianae. Identification of octadecyl p-coumarates as antifungal active principles was confirmed by its activity against Cercospora capsici by modified mycelial growth inhibition study.
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Date 2019-10-15T04:46:49Z
2019-10-15T04:46:49Z
2016-09-01
 
Type Article
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/23372
 
Language English
 
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