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| Articles
by
M. Khayamy |
Total Records (
2 ) for
M. Khayamy |
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E. Nikkhah
,
M. Khayamy
,
R. Heidari
and
R. Jamee
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Anthocyanins are natural pigments widely distributed in nature. Anthocyanin color molecules are a subclass of flavonoids. They are responsible for the reds, purples and blues in many flowers, fruits and vegetables. Fruits and berries are the most sample sources of anthocyanins in nature. Berries and fruits are an important part of the Finnish diet. In many researches the positive effect of fruit and berry intake on human health has been reported. Anthocyanins are considered to contribute to the healthiness of fruits and berries for their antioxidant, anti-carcinogenic, anti-inflammatory and anti-angiogenic properties for example. Anthocyanins can also improve the nutritional value of processed foods by preventing oxidation of lipids and proteins in the food products. However, the stability of anthocyanins becomes most significant also in this case, as in the case of color quality. In this study the anthocyanin pigment was extracted from the three different berries (Morus nigra L., Morus alba var. nigra and Fragaria L.). Using the soaking and wetting in ethanol (1% acidified). The extracted anthocyanin pigments then were exposed to three different concentration of sugar (sucrose) (20, 40 and 60%). Three groups of anthocyanin solutions keeping in darkness and refrigerator for 63 days and per 3 week, the quantity of anthocyanin absorbance recorded in 520 nm. In this study, according to statistical analysis, primary concentration (20%) of sugar (sucrose) has protective effect on Anthocyanins, but in higher concentration this effect is decreased. |
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H. Khoshnoud
and
M. Khayamy
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Ethanolic extract from flowers of Verbascum cheiranthifolium Boiss. (Scrophulariaceae) was examined for its effect on mortality and progeny production against adults of Sitophilus oryzae (L.) and Tribolium castaneum (Herbst.). The insecticide was applied at five dose rates, which 0.25, 0.5, 1.0, 2.0 and 3% (w/v). Adults of the above-mentioned species were exposed to the treated wheat at 25°C and 65% RH and mortality was assessed after 24 and 48 h, 7, 14 and 21 day of exposure. Then all adults were removed and the treated substrate remained at the same conditions for an additional 45 day after this interval, the commodity was checked for progeny production. For two species mortality increased with the increase of dose and exposure interval. Results indicate that S. oryzae was more sensitive than T. castaneum. In case of S. oryzae mortality was 100% after 21 day of exposure at the highest dose rate. For two species, complete suppression of the progeny production was observed in the treated wheat than in the untreated wheat even in the lowest dose rate. Therefore, this botanical material can be used for protection of stored Wheat from infestations of stored-product insect pests. |
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