A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Mishra, Sudeep
- Phytochemistry of Guggul (Commiphora wightii): A Review
Authors
1 Banasthali Vidyapith, Bansthali, Rajasthan
2 Government P. G. College, Satna MP
Source
Asian Journal of Research in Chemistry, Vol 6, No 4 (2013), Pagination: 415-426Abstract
Guggul has been known to mankind since the time of Vedas. It is the oleo-gum-resin exudate from the bark of Commiphora wightii (Arn.) Bhandari [Family: Burseraceae]. Guggul is very well described in various ayurvedic texts for their various therapeutic properties. C. wightii has been used as an inactive pharmaceutical ingredient, binding agent, anti-obesity agent and cholesterol-reducing agent. Gum guggul is used in incense, lacquers, varnishes, and ointments, as a fixative in perfumes, and in medicine. Therapeutic uses include treatment of nervous diseases, leprosy, muscle spasms, ophthalmia, skin disorders, ulcerative pharyngitis, hypertension, ischaemia, and urinary disorders. The main active constituents of this oleo-gum resin are Z-guggulsterone, E-guggulsterone, Z-guggulsterol and guggulsterol I-V. The main aim of chemical investigations was to isolate and chemically characterize compounds of the oleo- gum resin of C. wightii responsible for the hypocholesterolaemic/ hypolipaemic activity. For the standardization of guggul, tests like physico-chemical values, chromatographic analysis have been reported. Several companies supply gum guggul in bulk through the Internet. There are many companies which are supplement supplier of gum guggulu through the internet. Supplement suppliers include formulation of guggulu as well as guggulu in combination of other medicinal plants. There are several patents have been assigned for guggulu uses in cosmetics. The review discusses chemistry, uses as well as commercial availability of guggul.Keywords
Guggul, Chemistry, Standardization, Therapeutics uses, Commercial availabilityReferences
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- Synthesis of Diaryl Heptanoid Based Ketene Dithioacetals as Novel Antileishmanial Agents
Authors
1 Division of Medicinal Chemistry, Central Drug Research Institute, Lucknow, IN
2 National Institute of Science Communication and Information Resources, Dr. K. S.Krishnan Marg, New Delhi, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 7 (2011), Pagination: 1188-1193Abstract
Diaryl heptanoid based ketene dithioacetals have been synthesized in good yield by the condensation of aromatic aldehyde or substituted aromatic aldehyde and acetone ketene dithioacetals in the presence of methanolic potassium hydroxide, 3,4-dihydro-2H-pyran, PPTS as a catalyst under room temperature conditions. It is the first suceesful report of utility of potassium hydroxide as a base for the preparation of series of ketene. α- oxo ketene dithioacetals have been extensively used as the anti-leishmanial agent. The remarkable advantages offered by this method are excellent catalyst, mild reaction conditions, simple procedure and good yield of product.
Keywords
Acetone Ketene Dithioacetals, Potassium Hydroxide, Diaryl Heptanoid Based Ketene, α- Oxo Ketene Dithioacetals, Anti-Leishmanial Agent.- Studies on Standardization of Tephrosia purpurea Linn - An Important Ayurvedic Drug
Authors
1 Central Council for Research in Ayurveda and Siddha, Janakpuri, Delhi-110058, IN
2 National Institute of Ayurvedic Pharmaceutical Research, Patiala - 47001, Punjab, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 5 (2011), Pagination: 726-728Abstract
Herbal drugs are traditionally used in various parts of the world to cure different diseases. The present study has been conducted to evaluate the quality control parameters of the hydro alcoholic extracts of Tephrosia purpurea Linn ;an important Indian medicinal plant widely used in the preparation of Ayurvedic formulations. Tephrosia purpurea Linn. is a highly branched, sub-erect herb commonly known in Sanskrit as Sharapunkha. It has been used in Indian traditional medicine for the treatment of various inflammatory disorders. The plant is used to cure diseases of the kidney, liver, spleen, heart, blood, skin eruptions, bronchitis, bilious febrile attack, boils, pimples, and bleeding piles. The dried herb is effective as a tonic, laxative, and diuretic. The ischolar_mains and seeds are have insecticidal, piscicidal and vermifugal properties.
As there is no detailed standardisation work reported on Tephrosia purpurea Linn extract, the physicochemical parameters, phytochemical analysis, toxic heavy metals and microbial contamination analysis are carried out. The study revealed specific identities for the particular crude drug which will be useful in identification and control to adulterations of the raw drug and Ayurvedic formulations.
Keywords
Tephrosia purpurea Linn, Ayurvedic, Physicochemical Parameters, Toxic Metals.- A New Flavonoid and other Two Flavonoids Isolated from Different Plant Parts of Selected Cassia Species
Authors
1 University of Rajasthan, Jaipur-302055, IN
2 National Institute of Science Communication and Information Resources, Dr. K. S.Krishnan Marg, New Delhi-110 012, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 5 (2011), Pagination: 818-821Abstract
Cassia species have been of keen interest in phytochemical and pharmacological research due to their excellent medicinal values. Different classes of natural products, possessing potent physiological and pharmacological activities have been isolated from Cassia species, and they include anthracene derivatives, flavonoids and polysaccharides. Present study shows that various concentration of flavonoids in different plant parts of selected Cassia species. The higher levels of both kaempferol and qurecetin(F+B) were measured in flowers of Cassia nodosa (quercetin : 1.02 mg/gdw; kaempferol : 0.93 mg/gdw). Similarly higher levels of kaempferol-7-O-glucoside(F+B) was also measured in flowers of C. nodosa (0.42 mg/gdw) while minimum levels of kaempferol and qurecetin were measured in ischolar_main of Cassia renigera (0.07 mg/gdw; 0.06 mg/gdw) respectively . The minimum levels of Kaempferol-7-O-glucoside was not measured in C. renigera.Keywords
Cassia Species, Flavonoids, Kaempferol, Qurecetin, Kaempferol-7-O-Glucoside, Flowers, Leaves.- A Comparative Study of the Quality Assessment of Vitex negundo Linn Leaves Collected from Three Different Geographical Locations
Authors
1 National Institute of Ayurvedic Pharmaceutical Research, Patiala- 147001, Punjab, IN
2 School of Pharmaceutical Sciences, Shobhit University, Meerut, UP, IN
3 Central Council for Research in Ayurveda and Siddha (CCRAS), Janakpuri, Delhi-110058, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 6 (2011), Pagination: 986-989Abstract
Vitex negundo Linn (Five-leaved chaste tree), Hindi-Nirgundi, Sanskrit-Sindhuvara, Tamil and Malyalam-Vennochi, Telugu-Nalla vavili and Punjabi-Marwan (Family: Verbenaceae), is an important medicinal plant found throughout India. All parts of this plant especially the leaf and ischolar_main extracts are being used in various formulations in Ayurveda and Unani systems of medicine. Vitex negundo Linn is pungent, bitter and astringent in taste and according to Ayurveda , it alleviates vata and kapha doshas, but aggravates pitta dosha. It possesses light and dry attributes. Its leaves and seeds are widely used externally for rheumatism and inflammations of joints and also reported to have insecticidal properties. Internally, decoction of its leaves is taken as diuretic, expectorant, vermifuge, tonic and febrifuge. The chemical components of the essential oil of leaf isolated from the plant are used to treat colds and coughing spells. Vitex negundo Linn is used in Classical Ayurvedic Preparations like Nirgundi kalka, Nirgundi ghrta, Nirgundi kvatha, Vranasodhana taila, Visagarbha taila etc. The evaluation studies of Pharmacopoeial standards, phytochemical parameters suggested that the observed physiochemical parameters are of great value in quality control and formulation development of Vitex negundo Linn. Physicochemical parameters like preliminary characteristics, toxic heavy metals, and aflatoxin analysis were carried out. The study revealed that the results on different parameters of the crude drug will be useful in identification and control of adulterations.Keywords
Ayurveda, Vitex negundo Linn, Toxic Metals, Aflatoxin and Quality Control.- Method Development and Validation of Multiclass Pesticide Residues and Metabolites in Wheat by GC-ECD and GC-MS
Authors
1 Institute of Pesticide Formulation Technology, Sector-20, Udyog Vihar, Opp. Ambience Mall, NH-8, Gurgaon, Haryana-122016, IN
Source
Asian Journal of Research in Chemistry, Vol 9, No 1 (2016), Pagination: 13-21Abstract
A method was developed and validated for analysis of 25 multiclass pesticide residues and their metabolites in wheat grains using GC-ECD for quantification, and GC-MS for confirmation. Samples were treated through a method developed by slight modification in QuEChERS technique. The GC-ECD instrument was calibrated at 6 calibration levels (viz. 0.005, 0.010, 0.050, 0.100,0.250, 0.500 mg/Kg) with regression co-efficient (r2) varying from 0.9993 to 0.9756. Sample preparation include extraction by Acetonitrile solvent (HPLC grade) and clean up by C-18, PSA and anhydrous MgSO4. Limit of Detection (LOD) of pesticides in wheat matrix varies from 0.002-0.06 μg/g and Limit of Quantitation (LOQ) from 0.004 to 0.2 μg/g. Mean recovery percentage of pesticides at 1 LOQ lies in range of 79.77-128.04 with RSD below 16.35%. Uncertainty measured at three sources–purity of standards, weighing and instrument precision. Maximum expanded uncertainty (2U) falls between the range of 0.0008-0.487.Keywords
Pesticide Residue, Method Development, LOD, LOQ, Wheat.- Studies of Ternary Complexes of Zn (II) Involving Aminocarboxylic Acids and NTA (Nitrilotriacetic Acid) by Paper Electrophoresis
Authors
1 Awadhesh Pratap Singh University, Rewa (M.P), IN
2 Arihant Publication Pvt. Limited, New Delhi, IN