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Articles by D.S. Rawat
Total Records ( 2 ) for D.S. Rawat
  Sunita Goswami , Jeewanti Kanyal , Om Prakash , Ravendra Kumar , D.S. Rawat , R.M. Srivastava and A.K. Pant
  Background and Objective: The lamiaceae Martinov or Labiatae de Juss. is the large family of flowering plants, commonly known as the mint or deadnettle family. Salvia reflexa Hornem. is the important medicinal plant of this family. The objectives of this study were to determine the essential oil composition of the aerial part of the plant and to evaluate its antioxidant, antifungal and antifeedant properties. Materials and Methods: The plant essential oil was extracted by hydro distillation method and chemical composition was analyzed by gas chromatography–mass spectrometry. The antioxidant activity was evaluated in terms of DPPH radical scavenging, reducing power and metal chelating activity. The antifungal property was performed against two phytopathogenic fungi viz; Curvularia lunata and Helminthosporium maydis and antifeedant property was carried out against Spilosoma obliqua (Walker) larvae. Results: Nineteen compounds were identified which contributed 94.3% of the total oil. Palmitic acid (25.8%), phytol (24.0%), (E)-caryophyllene (12.4%) and caryophyllene oxide (10.7%) were identified as the major components. The antioxidant activity in term of DPPH radical scavenging, reducing power and metal chelating activity of the essential oil was found to be IC50 = 71.82±0.45 μg mL1, RP50 = 23.6±1.05 μg mL1 and IC50 = 70.3±1.1μg mL1, respectively. The essential oil of Salvia reflexa showed strong antifungal and antifeedant activity in a dose dependent manner. Conclusion: The detailed study reveals that the essential oil of Salvia reflexa can be used as a good antioxidant, an excellent antifungal for inhibiting the growth of fungus and a very effective antifeedant for controlling the insects.
  Satish Chandra , D.S. Rawat , Dinesh Chandra and Jyotsna Rastogi
  Dianthus caryophyllus L. (carnation) is an important cut flower in trade. This plant traditionally used in China, Japan and Korea in the treatment of wounds and gastro-intestinal disorder and various other ailments. In recent pharmacological studies plant tested for anticancer, antiviral, antibacterial, antifungal and anti-insecticide activities. Kaempferide triglycoside a phenolic compound from plant exhibit anticancer properties against colon cancer cell lines and also show antifungal properties against Fusarium wilt causative pathogenic fungi. Plant extract possesses antibacterial properties against Helicobacter pylori, Pseudomonas spp. and Bacillus spp. The seeds extract of D. caryophyllus exhibit potent antiviral activity against HIV, herpes simplex virus-1 (HSV-1) and hepatitis A virus-27 (HAV-27). Essential oil extracted from flowers of carnation shows arthropods repellent and larvicidal activity.
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