I have to test for some potential leaf extract against Alternaria. Please suggest me a group of plants, which aqueous extract could be inhibitory to the fungus Alternaria.
Antifungal effect depend on the species of the plant , on solvent and the part of the plant.
https://doi.org/10.1128/AAC.00949-16
https://www.jstage.jst.go.jp/article/antibiotics1968/49/9/49_9_873/_pdf
https://doi.org/10.1016/j.foodchem.2010.12.011
https://doi.org/10.1111/j.1365-2672.1996.tb03543.x
Good luck.
Yes, you will do well to choose a plant that is rich in saponins. They tend to confer antifungal effects. To identify a species with saponins, you can either do a literature search, or test them by mixing leaves with water and shaking to see if a soapy froth appears. The froth must persist for several hours for it to be caused by saponins.
Plants from the family Rubiaceae are rich in flavonoids which have a wide range of antimicrobial activities
Naturally many plant family have antifungal activity for e.g., Meliaceae, Lamiaceae family. Reading standard articles and writing a review article for further studies might help for any kind of study.
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