List of Articles Ravendra Kumar

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  1 - Chemical composition and biological activities of Nepeta hindostana (Roth) Haines, Nepeta graciliflora Benth. and Nepeta cataria L. from India
  مونیکا جوشی راوندرا کومار ام پراکاش آنیل پانت D. راوات
  10.30495/medherb.2021.683393
  Background & Aim:Intraditional medicine system, Nepeta species are widely used to reduce chicken pox, tuberculosis, malaria, pneumonia, influenza, measles, stomach disorders, eye complaints, respiratory disorders, asthma, colds, coughs etc. The aim of the present st More

  Background & Aim:Intraditional medicine system, Nepeta species are widely used to reduce chicken pox, tuberculosis, malaria, pneumonia, influenza, measles, stomach disorders, eye complaints, respiratory disorders, asthma, colds, coughs etc. The aim of the present study was to evaluate the chemical composition and biological activities of the essential oils from three species of genus Nepeta viz: Nepeta hindostana (Roth) Haines (NHO), Nepeta graciliflora Benth (NGO) and Nepeta cataria L (NCO).Experimental: The essential oils were analysed by the combination of GC and GC-MS. Antioxidant activity was tested by using reducing power assay, metal chelating of Fe2 +assay, and DPPH radical scavenging assay. In-vitro antinflammatory activity was evaluated using albumin denaturation assay and anti-diabetic activity was determined by using α-amylase assay.Results: The major components present in NCO, NHO and NGO were cis-nepetalactone (69.78%), β-farnesene (43.41%) and sesquisabinene (28.75%), respectively. NCO showed the highest percentage inhibition of DPPH radical (IC50=5.89 µl/ml) followed by NHO (IC50=8.63 µl/ml) and then NGO (IC50=13.81 µl/ml). In terms of reducing power assay and metal chelating of Fe2+ assay, the highest antioxidant activity was also shown by NCO. Among the tested essential oil, NCO showed highest in-vitro anti-inflammatory potential (IC50 18.463±0.14 µg/ml) followed by NGO and NHO with IC50 22.035±0.11 µg/ml and 26.17±0.14 µg/ml, respectively. NHO showed maximum antidiabetic activity with IC50 8.92±0.10 µg/ml of α-amylase.Recommended applications/industries: On the basis of present research work it is marked that the essential oil of Nepeta hindostana (Roth) Haines, Nepeta graciliflora Benth. and Nepeta cataria L. is a potent antioxidant, anti-inflammatory and anti-diabetic agent indicating their potentiality in the field of food, pharmaceutical and cosmetic industry Manuscript profile
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  2 - Chemical composition and anti-inflamatory, anti-nociceptive and antipyretic activity of rhizome essential oil of Globba sessiliflora Sims. collected from Garhwal region of Uttarakhand
  راوندرا کومار پراکاش ام پانت آنیل کومار ماهش ایسیدورو والاری اسزپانیاک لچ
  10.18869/JHD.2017.59
  Background & Aim:Family Zingiberaceae is worldwide in distribution. Plants of the zingiberaceae family are used in traditional herbal folk medicine besides their uses in spices, cosmetic, ornamental, food preservatives etc. In Uttarakhand the herbs grow from sub- More

  Background & Aim:Family Zingiberaceae is worldwide in distribution. Plants of the zingiberaceae family are used in traditional herbal folk medicine besides their uses in spices, cosmetic, ornamental, food preservatives etc. In Uttarakhand the herbs grow from sub-tropical to temperate region. Globba sessiliflora Simsrhizomes were collected at maturity stage in November from Garhwal region of Uttarakhand, India. In present communication the medicinal use of various zingiberaceous herb provoked us to study the chemical diversity and pharmacological activity determination of this important traditional herb. Experimental: The essential oil was extracted using hydrodistillation method and analyzed by GC-MS. Anti-inflamatory, anti-nociceptive and antipyretic activities of essential oil were experimently determined using mice model. Results: The major compounds identified were β-eudesmol (27.6%), (E)-β-caryophyllene (24.3%), α-humulene (3.0%), (6E)-nerolidol (4.1%), caryophyllene oxide (9.7%), γ-eudesmol (6.4%) and τ-muurolol (8.3%) besides other minor constituents. Essential oil of G. sessiliflora rhizome showed good anti-inflamatory, anti-nociceptive and antipyretic activities at the dose level of 100 mg/kg body weight. The oral administration of the essential oil exhibited no toxicity at 400, 600 and 800 mg/kg b.wt. concentration. Ibuprofen, indomthacin and paracetamol were used as standard drugs for comparison.Recommended applications/industries: G. sessiliflora essential oil can be used as herbal remedy for its nontoxicityanti-inflamatory, anti-nociceptive and antipyretic activities. Manuscript profile
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  3 - Comparative Study of Chemical Composition and Antioxidant Activity of Essential Oil Extracted from Acorus calamus L. Leaves
  پینکی چابی آرکانا پارکی ام پراکاش راوندرا کومار ای. کا پانت
  10.14196/JHD. 2018. 203
  Background & Aim: Acorus calamus L. is a native herb in India. The herb belongs to family Acoraceae. It is perennial and grows in marshy land with scented rhizomes and tapered reed like leaves with 80-100 cm in height. The leaves generally arise from the rhizomes. I More

  Background & Aim: Acorus calamus L. is a native herb in India. The herb belongs to family Acoraceae. It is perennial and grows in marshy land with scented rhizomes and tapered reed like leaves with 80-100 cm in height. The leaves generally arise from the rhizomes. It is also known as sweet flag in English and vernacularly as Bach. The present investigation reveals the chemical diversity and antioxidant activity of Acorus calamus leaf essential oils from different altitudinal regions of Uttarakhand. Experimental: The essential oil composition of Acorus calamus (Araceae) leaves, collected from twenty different ecological niches of Uttarakhand, in India with oil yield ranged between 0.2-1.4 percent, were analyzed by GC/MS. DPPH assay were performed for determination of antioxidant activity of each oil. Results: The major component ranging 43.4-60.7% of the total oil was identified as β- asarone. The other predominant constituents were α-asarone (2.6-7.9%), shyobunone (3.4-6.3%) and Z- isoelemicin (3.2-5.4%). The antioxidant activity of essential oil was studied by their ability to scavenge free radicals with different IC50 values (10.79-106.44 μg/ml) in comparison to standard antioxidant. Recommended applications/industries: The vast chemical diversity of the herb essential oil and its antioxidant potential can be good natural source for herbal neutraceuticals and phenyl propanoids, the biologically important class of terpenoids. Manuscript profile
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  4 - Chemical composition and antioxidant activity of Acorus calamus L. accessions from different altitudes of Uttarakhand Himalayas
  آرکانا پارکی پینکی کوبی ام پراکاش راوندرا کومار آنیل پانت
  Background & Aim: Acorus calamus L. (Araceae) is an herb traditionally used in Indian and Chinees system of medicine. It is a perennial herb with long, cylindrical scented rhizomes which are creeping and extensively branched with the thickness up to 2.5 cm. The rhiz More

  Background & Aim: Acorus calamus L. (Araceae) is an herb traditionally used in Indian and Chinees system of medicine. It is a perennial herb with long, cylindrical scented rhizomes which are creeping and extensively branched with the thickness up to 2.5 cm. The rhizomes are whitish internally and brownish externally in appearance. It is vernacularly known as Bach in India. The present investigation reveals the phytochemical screening and antioxidant activity of the rhizome and leaves methanolic extracts of A calamus from three different altitudes of Uttarakhand. Experimental: The extracts compositions of Acorus calamus rhizomes and leaves collected from three different altitudes of Uttarakhand Himalayas, India. The yield of extracts ranged from 0.3- 4.8% w/v, were analyzed by GC/MS and in-vitro antioxidant assay were done by different methods. Results: Over 65 contributing 80.90-90.55 % in different extracts among all the accessions were identified. The major compounds identified were β-asarone (44.9-51.9%), shyobunone (1.1%- 5.3%), Z-methyl isoeugenol (0.1%-2.4%), leinoleic acid (6.4%-18.9%), α-asarone(0.1%-4.6%) and Z-isoelemicin (2.2%-15.8%). The amount of phenolics in rhizome extracts, ranged from 4.10 mg-4.80 mg GAE/g respectively, whereas in leaf extracts the amounts were 2.40-3.26mg GAE/g respectively.All the extracts exhibited good in vitro antioxidant activity with the IC50 values ranging from 0.3- 4.8 % w/v determined by different methods compared to standard antioxidant. Recommended applications/industries: Based on above observations it can be inferred that the herb may be a good source of bioactive compounds and can work as an antioxidant to prevent the oxidative deteriorative activity of food materials beside generation of database for its scientific and judicious in-situ exploitation. Manuscript profile