Posted by admin on Aug 31, 2018 in |
Mango is the most popular fruit having excellent flavor, pleasant aroma, attractive color, and taste. It is a good source of vitamin A and C, TSS (total soluble solids) and minerals. It is also a medium source of carbohydrate. Their fruit has distinct physio-morphological characteristic features and composition variation. Phenolics are aromatic benzene ring compounds with one or more hydroxyl groups produced by plants mainly for protection against stress. Phenolics play important roles in plant development, particularly in lignin and pigment biosynthesis. Phenolic is among the major contributors that are accountable for antioxidant properties in fruits, vegetables, whole grains, and other plant-based materials. Hence in the present study, the phenolic acid analysis was done by HPTLC for comparison between three varieties at unripe and ripe stages. Three varieties, namely alphonso, kesar, and rajapuri were studied extensively for the phenolic acid variations. Phenolic acids occur naturally in plants and are their main polyphenols. In plants, they act as signaling molecules and agents of defense. In humans, these compounds act as...
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Posted by admin on Sep 8, 2017 in |
A simple TLC method has been developed for the simultaneous quantification of bergenin using HPTLC plate precoated with silica gel 60 F254. The method was developed in toluene: ethyl acetate: acetone (2:4:4 v/v) toluene: ethyl acetate: formic acid (4:6:1, v/v) and validated in terms of precision, repeatability, and accuracy. The isolated compounds were characterized using spectroanalytical techniques and found to be bergenin. The in-vitro antioxidant activity of the isolated compound was determined. For the antioxidant potential, two standard analytical protocols, namely, DPPH radical scavenging activity (RSA) and ferric reducing antioxidant power were adopted. The results showed that the compound was found to be a more potent...
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Posted by admin on Sep 8, 2017 in |
This study evaluated the scientific basis for the traditional use of Aegiceras corniculatum (Myrsinaceae) stem extract as an anthelmintic agent. The study design was an investigation of the traditional anthelmintic medicinal plant Aegiceras corniculatum using in-vitro anthelmintic properties of four extracts of the plant were evaluated using earthworms. The earthworm (Pheretima posthuma) resembles both anatomically and physiologically to the intestinal roundworm parasites of human beings. The four crude stem extracts of Aegiceras corniculatum were petroleum ether extract (50 & 100 mg/ml), chloroform extract (50 & 100 mg/ml), methanol extract (50 & 100 mg/ml) and aqueous extract (50 & 100 mg/ml). The paralysis time of petroleum ether extract (96 ± 6.33 & 76 ± 2.31), chloroform extract (116 ± 4.36 & 92 ± 7.50), ethanol extract (62 ± 3.20 & 34 ± 3.52) and aqueous extract (200 ± 2.22 & 180 ± 3.19) were compared to the standard drug Albendazole suspension 100mg / 5ml (5 ± 1.00). The results showed that the four extracts produced dose-dependent and significant anthelmintic activities....
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Posted by admin on Sep 8, 2017 in |
The present study was conducted to investigate the color strength (K/S), colorfastness, antibacterial and antioxidant properties of silk using fabric Cichorium intybus root extract as a natural dye. Comparative results of color fastness (fastness to wash, rub, light and perspiration) and colorimetric properties (CIELab and K/S values) of dyed silk samples were studied to quantify the effect of mordants and mordanting method. Alum and myrobalan were used as mordants. Three methods of mordanting techniques were used (pre, meta and post-mordanting). The samples showed acceptable color strength and colorfastness values. The antibacterial activity of the dyed samples with and without mordants was tested against common pathogens Escherichia coli and Staphylococcus aureus. The antioxidant property of the dyed fabric was analyzed by DPPH method. Cichorium intybus proved to be very effective in inhibiting microbial growth. The results of DPPH assay were positive for all the samples. The dyeing of silk fabric with Cichorium intybus root extract provided a multifunctional textile material with both antioxidant and antibacterial...
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Posted by admin on Sep 8, 2017 in |
Tunisian flora contains several wild plants with diverse therapeutic uses. As a contribution to the efforts to select natural sources of antitumor compounds, we investigated in this study the antiproliferative activity of several extracts of the Tunisian species: Astragalus gombo, Nicotiana glauca and Artemisia campestris. Dried aerial part (A. gombo and A. campestris) and leaves (N. glauca) were extracted with ethyl acetate, dichloromethane, and methanol. In the vitro anti-proliferative activity of the extracts was tested against the human solid tumor cell lines: HBL-100, T-47D, and WiDr. Tests were performed using the sulforhodamine B (SRB) assay. All extracts of A. campestris and A. gombo were active against all tested cell lines, with GI50 values between 12 and 93 µg/ml. Dichloromethane extract of A. campestris was the most active extract with GI50 of 12 µg/ml against HBL-100 cell line. This kind of cell seems to be the most sensitive regarding all tested extracts. Our results showed that A. gombo, A. campestris and N. glauca are a promising source of natural antitumor...
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