(searched for: doi:10.6000/1927-5951.2011.01.01.14)
Journal of Natural Medicines, Volume 75, pp 762-783; https://doi.org/10.1007/s11418-021-01545-7
Traditional herbal medicines, which have been used in the matured traditional medical systems as well as those have been used in ethnic medical systems, are invaluable resources of drug seeds. Ethnobotanical and ethnopharmacological survey may provide useful information of these herbal medicines, which are valuable for searching new bioactive molecules. From this viewpoint, we have been performing the ethnobotanical and ethnopharmacological field studies in Yunnan Province and Guangxi Zhuang Autonomous Region, China, and Mongolia. Phytochemical studies on traditional herbal medicines were performed based on the information obtained by our ethnobotanical survey. Herbal medicines used in Uzbekistan and Bangladesh were also investigated on the basis of the ethnopharmacological information obtained from collaborative researchers in the respective regions. Some studies were carried out for searching active substance(s) based on bioassay-guided fractionation and isolation. Over 150 new molecules were isolated in these studies, and their various biological activities were also demonstrated. This review summarizes the results of phytochemical studies of those traditional herbal medicines as well as biological activities of the isolated molecules. Graphic abstract
African Journal of Pharmacy and Pharmacology, Volume 11, pp 209-216; https://doi.org/10.5897/AJPP2017.4747
The purpose of this study was to understand and investigate the phytochemical and antimicrobial effects of different fractions of the methanolic extract of Corchorus capsularis leaf. For the extraction of lipophilic compounds with the help of methanol solvent system, cold extraction process was used, where the grinded coarse powder of the leaf was soaked in methanol and kept for four days for proper extraction. After that, the extract was concentrated by using rotatory evaporator and dried in room temperature. Compounds in the extract were separated according to their polarity by using vacuum liquid chromatography (VLC) and solvents of different polarity N-hexane, benzene, diethyl ether, chloroform, dichloromethane. Later, thin layer chromatography (TLC), flavonoid assay, disk diffusion, inhibitory action in nutrient broth was done for different fractions of the methanolic extract. Diethyl ether, chloroform, dichloromethane fractions showed good anti-oxidant property but poor antibacterial activity against different types of microorganism. Chloroform fraction showed good inhibitory activity against Aspergilus niger (fungus) in nutrient broth. Key words: Corchorus capsularis, vacuum liquid chromatography (VLC), thin layer chromatography (TLC), disc diffusion method, nutrient broth, Bangladesh.
Published: 30 July 2015
Evidence-Based Complementary and Alternative Medicine, Volume 2015, pp 1-30; https://doi.org/10.1155/2015/896314
Ylang-ylang (Cananga odorataHook. F. & Thomson) is one of the plants that are exploited at a large scale for its essential oil which is an important raw material for the fragrance industry. The essential oils extracted via steam distillation from the plant have been used mainly in cosmetic industry but also in food industry. Traditionally,C. odoratais used to treat malaria, stomach ailments, asthma, gout, and rheumatism. The essential oils or ylang-ylang oil is used in aromatherapy and is believed to be effective in treating depression, high blood pressure, and anxiety. Many phytochemical studies have identified the constituents present in the essential oils ofC. odorata. A wide range of chemical compounds including monoterpene, sesquiterpenes, and phenylpropanoids have been isolated from this plant. Recent studies have shown a wide variety of bioactivities exhibited by the essential oils and the extracts ofC. odorataincluding antimicrobial, antibiofilm, anti-inflammatory, antivector, insect-repellent, antidiabetic, antifertility and antimelanogenesis activities. Thus, the present review summarizes the information concerning the traditional uses, phytochemistry, and biological activities ofC. odorata. This review is aimed at demonstrating thatC. odoratanot only is an important raw material for perfume industry but also considered as a prospective useful plant to agriculture and medicine.
Journal of Pharmacy and Nutrition Sciences, Volume 3, pp 71-75; https://doi.org/10.6000/1927-5951.2013.03.01.8
The methanol extracts and their pet-ether, carbon tetrachloride, chloroform and aqueous soluble partitionates of Ophirrhiza mungos, Mussaenda macrophylla, Gmelina philippensis and Synedrella nodiflorawere subjected to assays for membrane stabilizing and thrombolytic activities. The extractives inhibited heat- as well as hypotonic solution-induced haemolysis of human erythrocytes in vitro. The pet-ether soluble fraction of O. mungos, M. macrophylla and S. nodiflora demonstrated 61.16 % & 24.75%, 52.55% & 23.35% and 60.24% & 22.85% inhibition of hemolysis of RBC caused by hypotonic solution and heat, whereas the carbon tetrachloride soluble fraction of G. philippensis showed 49.05% and 21.25% inhibition of hypotonic and heat induced hemolysis of RBC, respectively. Here, acetyl salicylic acid was used as reference standard at 0.10 mg/mL. Among the four plants, the carbon tetrachloride soluble fraction of O. mungos, methanol extract of M. macrophylla, carbon tetrachloride soluble fraction of G. philippensis and chloroform soluble fraction of S. nodiflora revealed highest thrombolytic activity with clot lysis value of 50.09%, 49.50%, 47.14% and 46.37%, respectively. Standard streptokinase and water were used as positive and negative controls which showed 65.00% and 3.84% lysis of clot, respectively.
Asian Pacific Journal of Tropical Biomedicine, Volume 2; https://doi.org/10.1016/s2221-1691(12)60408-0