Posted by admin on Sep 30, 2020 in |
Bay leaf is an aromatic leaf commonly used in cooking for its distinctive flavor and fragrance. The bay leaf sold in Nigerian markets being Laurus nobilis (L. nobilis) is imported. The leaf of Syzygium guineense (S. guineense) and Syzygium eucalyptoides (S. eucalyptoides) have a long history of use as vegetables and spices in Nigeria. In this study, leaf of S. guineense, S. eucalyptoides, and a commercial sample of L. nobilis being the gold standard for bay leaf, were evaluated for comparative essential oil composition in search of Nigerian bay leaf. The essential oil was obtained by hydrodistillation using a Clevenger-type apparatus. The essential oils were analyzed by gas chromatography-mass spectrometry (GC-MS). The major chemical constituents of the essential oil of L. nobilis were eucalyptol (9.33%), α- pinene (8.31%), and camphene (3.17%). S. guineensec contained β-myrcene (12.29%), globulol (7.60%), phytol (6.63%) and trans-ocimene (6.08%). S. eucalyptoides leaf essential oil contained 6-octadecanoic acid (16.37%), phytol (8.46%), 6-octadenanoic acid (9%), pentadenanoic acid (7.26%), caryophyllenyl alcohol (6.17%). L. nobilis leaf essential oil contained 75...
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Posted by admin on Aug 31, 2020 in |
The purpose of the present research work was to formulate and evaluate vanishing herbal cream. Herbal creams offer several advantages over other creams. The majority of existing creams which has prepared from drugs of synthetic origin and give extras fairness to face, but it has several side effects such as itching or several allergic reactions. Herbal creams do not have any of these side effects; without side effects, it gives the fairness look to the skin. The method carried out to prepare herbal cream was very simple. Firstly, the oil phase was prepared, the mixture of stearic acid (17%), potassium hydroxide (0.5%), sodium carbonate (0.5%) were melted at 70 ºC. Secondly, the aqueous phase was prepared, a mixture of alcoholic extract of crude drugs, including C. officinalis and A. indica, Turmeric, Nutmeg, Cinnamon, are commercially available as extracts and in the different formulation to be used either for cosmetic purposes or for medical use. Glycerin (6%), perfume (0.5%), water (71%) heated at 70 ºC. Then aqueous phase was added...
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Posted by admin on Aug 31, 2020 in |
A field study was conducted at the Vegetable Research Farm, Banaras Hindu University, Varanasi, during rabi season 2016-2017 for the evaluation of newer insecticides (Imidacloprid 600 FS and Thiamethoxam 30 % FS) on plant growth characters of a garden pea. The two insecticides were applied as a seed treatment in different doses. The result of bio-efficiency revealed that the seed treatment with T₃ gaucho (Imidacloprid 600 FS) @ 2 ml/kg was found effective in promoting plant growth and increased germination % (93.84%) and maximum plant stand per meter square(m²) (30.40%). Less number of days to 50% flowering (43.33 days) and maximum plant height at last harvesting stage (91.07 cm) were also recorded in seed treatment with T₃ gaucho (Imidacloprid 600 FS), while there was no significant difference in plant height at 30 DAS and 45 DAS. However, all the seed treatment was found superior over untreated...
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Posted by admin on Aug 31, 2020 in |
The present study, carried out on Cymbopogon citratus was interested in volatile and no-volatile extracts of the plant. It focused on the effect of two types of extracts on eleven strains of bacteria. Chemical analysis of the volatile extract obtained with a yield of 2.28% revealed the presence of 72.91% of citral and other minority compounds. The extraction yield of the ethanolic extract (no-volatile) is 10.8%. Chemical groups such as reducing compounds, alkaloids, flavonoids, phenolic compounds, leuco-anthocyanins, saponosides, coumarins, and finally, terpenoids have been identified in this extract. The Minimum Inhibitory Concentration (MIC) and Bactericidal (CMB) were determined by macro dilution method. The volatile extract showed the best inhibitory activities on more than 90% of the strains of bacteria studied. The lowest minimum inhibitory concentrations were obtained against Micrococcus luteus (0.3125 mg/ml), Staphylococcus epidermidis T22695 (0.625 mg/ml) and Proteus vulgaris A25015 (0.625 mg/ml). This extract also had the best inhibition diameters against most bacteria. The bactericidal activity of this extract was only obtained against Enterococcus faecalis (1.25 mg/ml). The...
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Posted by admin on Jul 31, 2020 in |
Nowadays, the use of essential oils as alternative therapies has gained worldwide concern, owing to their various biological activities. Considerable attention has been devoted to essential oil, which is widely used for its important properties, including antimicrobial, anti-inflammatory, antispasmodic, cytoprotective, hepatoprotective, with strong antioxidant actions. Eucalyptol is an essential oil present in large amounts in a variety of plants, which is frequently used in the manufacture of cosmetics, to increase percutaneous penetration of drugs, as a nasal decongestant and anti-cough agent, and in aromatherapy. GC analysis of the essential oil was carried out on the Agilent 7820A system with a mass detector (MS) and a HP-5 MS column (30 m × 0.25 mm, 0.25 μm film thickness). Nineteen essential chemical constituents were identified based on GC-MS in Eucalyptus oil supplied from the pharmacy. The main constituents of Eucalyptus oil are eucalyptol (76.81%), γ -terpinene (7.75), α-pinene (6.62), and α-terpineol (1.44%). These four components account for 92.6% of the total relative content of the Eucalyptol oil. This research also demonstrated...
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