||Investigations on Antifungal Activity of Hemizyga bracteosa (BENTH) Vegetables Extracts against Rice Fungi.
TOVIDE Noel ,
GNANCADJA ANDRÉ LÉOPOLD SIMPLICE ,
OHIN Brice ,
TOVIDE Noel ,
BABA-MOU FARID A. KADER SAÏD ,
||Journal of Chemical, Biological and Physical Sciences
||Rice is one of the most widely consumed cereals in Benin; its quality and
contamination are therefore important factors to take into account for consumer safety.
The presence of molds and mycotoxins in rice is one of the main health risks to consider.
The objective of this study is to assess the antifungal activities of natural extracts of
Hemizygia bracteosa on molds isolated from rice during storage. Volatile and nonvolatile
extracts based on the leaves of the plant were produced and the effectiveness of
these extracts was tested on five fungal strains. A phytochemical screening was also
carried out in order to identify the main families of compounds contained in the nonvolatile
extracts of the plant. Yields are 0.003% for essential oils, 7.24% for the aqueous
extract, 6.57% for semi-ethanolic extract and 10.72% for the ethanol extract. The
minimum inhibition concentrations vary from 3.75 to 37.5 μl/ml. Also tannins,flavonoids, saponins, Quinone derivatives, anthocyanins, leuco-anthocyanins and
mucilage have been identified while the hydrocyanic acid derivatives and the
anthracenosides was absent. Infestation rates of collected rice samples ranged from 40 to
90% and these extracts have anti-fungal properties found on, Aspergillus parasiticus, A.
flavus, A. niger, A. versicolor and Penicillium digitatum.
||Hemizygia bracteosa, rice, antifungal activity, contamination
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