Om Prakash

• G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, INDIA

Leucosceptrum canum, a rare Himalayan plant, shows significant bioactive properties, with its nematicidal potential investigated here for the first time. This study isolated and characterized flavonoids from L. canum, assessing their efficacy against the plant-parasitic nematode Meloidogyne incognita. Bioassay-guided fractionation identified three...

The pesticidal activity of the rhizome and aerial parts of Cautleya spicata (Sm.) Baker was investigated, revealing significant findings. The GC-MS analysis revealed significant compositional variability among the extracts. β-Sitosterol was identified as the dominant compound in all extracts prepared with hexane, acetone, and methanol, while α-humu...

Hedychium coronarium, commonly referred to as the white ginger lily, is esteemed for its ornamental characteristics and fragrant properties. However, its potential as a natural insecticide remains inadequately explored, particularly regarding the influence of seasonal variations on its chemical composition. The aim of this study was to investigate...

Hedychium flavescens is recognized for its medicinal and pesticidal potential, yet its comprehensive phyto-chemical profile and bioactivity against nematodes remain underexplored. This study offers a comparative analysis of the chemical composition, nematicidal activity and acetylcholinesterase (AChE) inhibition of essential oils (EOs) and extracts...

Carotenoids represent a prevalent category of pigments within the marine ecosystem. These compounds are not only found in bacteria, yeasts, and fungi but are also present in algae, as well as various vertebrates and invertebrates. Organisms within this environment can modify the structure of carotenoids obtained through their diet. Marine animals a...

Introduction Hedychium coronarium J. König, from the Zingiberaceae family, is a rhizomatous herb used in Ayurvedic medicine for its febrifuge, anti-rheumatic, and anthelmintic properties. Method This study characterizes the chemical diversity and biological activities of H. coronarium oleoresins collected from four locations in Uttarakhand: Pantna...

The fresh and dried rhizomes of Hedychium spicatum are used to treat various ailments. The present work aimed to determine the influence of drying conditions (shade; HSSH, sun; HSS, oven; HSSV30 HSSV50, blower; HSB) on the essential oil profile and antioxidant potential of H. spicatum rhizomes. The oil was extracted by hydrodistillation method. The...

Three labdane-type diterpenes, namely coronalactoside i, hedychilactone a, and (E)-labda-8(17),12-dien-15(16)-olide, along with the flavonoid glycoside isolinariin a, were isolated from Heydichium coronarium. Structural elucidation employed spectroscopic techniques (iR, mS, nmR, and dEpt) and comparison with literature data. pesticidal and antimicr...

This study investigates the phytochemical profiles and pesticidal activities of various Elsholtzia species, including E. ciliata, E. flava, E. fruticosa, and E. eriostachya, to discover their bioactive potential for sustainable pest management. Through comparative phytochemical analysis using GC‐MS technique, key compounds in the essential oils wer...

Hedychium coronarium plant has attracted considerable attention from researchers due to its diverse phytochemical composition and potential therapeutic applications. The objective of this study was to evaluate the phytochemical profile and biological attributes of H. coronarium essential oils collected during different seasons in the Kumaun region...

This study aimed to assess the chemical composition and pesticidal activities of essential oils (EOs) from Cautleya spicata rhizomes and aerial parts. The EOs were assessed against root-knot nematodes (Meloidogyne incognita) by mortality and hatchability bioassays and the phytotoxicity of the EOs was determined against Raphanus raphanistrum subspp....

Plants are a great source of bioactive compounds. Many such bioactive compounds are considered as extra nutritional constituents and typically occur in foods in small quantities. Capsaicinoids are a group of such compounds with many nutritional and health benefits. Capsaicinoids are amides present in Capsicum species, which are secondary metabolite...

The purpose of the investigation was to evaluate the phytochemical composition and biological properties of indigenous wild edible fruits that grow in the Uttarakhand Himalayas in India. Plant extracts were prepared employing the cold percolation method in both nonpolar and polar solvents, i.e., hexane and methanol. Subsequent GC-MS analysis of the...

Leucosceptrum canum Sm., belonging to the Lamiaceae family, is a colorful, aromatic woody plant renowned for its nectar production. Extensive phytochemical research over the years has led to the identification of numerous chemical constituents within L. canum, particularly highlighting diterpenoids and sesterterpenoids as its characteristic compoun...

Essential oils work synergistically to mitigate pathogenic impact of Meloidogyne incognita, Rhizoctonia solani and Sclerotinia rolfsii, Biocatalysis and Agricultural Biotechnology, https://doi. Abstract The phytochemical analysis and potential synergistic interactions between the essential oils (EOs) of Vitex negundo L. Piper longum L. and Vitex ag...

Coleus aromaticus Benth. (Family: Lamiaceae) is a huge perennial, aromatic and succulent herb native to the Indian subcontinent. The dried leaves have an oregano-like texture making them a perfect culinary food supplement to be used as herbal seasoning for meat and other food products. The present study aimed to identify the bioactive components in...

Nematodes are damaging pests that have a negative impact on many different crops. Different nematicides that are detrimental to the environment are used to control these nematodes. Additionally, they have a broad spectrum since they negatively affect the nontarget species. Therefore, it is necessary to develop novel, environment- friendly strategie...

Pesticides are categorized into different types according to their toxicity and environmental impacts. “Biorational” pesticides are pest control agents that are comparatively safe for humans and have a less negative impact on the environment. The classes of biorational pesticides comprise botanicals, microbial, minerals, and synthetic materials. Bo...

The essential oil composition of Acorus calamus (Acoraceae) rhizomes, collected from twenty different ecological niches in Uttarakhand, India, with an oil yield ranging between 0.7-5.4% (v/w), was examined by GC/MS. Among the identified components, β-asarone (62.3-75.9%), α-asarone (2.2-6.1%), Z-isoelemicin (2.4-6.2%), Z-methyl isoeugenol (2.3-6.4%...

The present research work aims to analyze the chemical, phytochemical composition and biological activities of Curcuma amada with Curcuma longa L. essential oil, the 2 variants collected from the diverse elevations and geographical variations of Kumaun and Garhwal regions of Uttarakhand, India. The analysis was done by using gas chromatography-mass...

The paper focuses on the biological activities of polar and non-polar extracts made from the aerial part of the plant Anaphalis margaritacea that was further chemically characterized. Both extracts’ constituent components were identified by their GC-MS profiles. In vitro antioxidant and anti-inflammatory activity of methanolic and hexane extracts w...

Plant extracts are considered as a promising alternative to chemical pest control agents. The chemistry of plant extracts varies with several environmental as well as geographical factors. Zingiber roseum (Roxb.) Roscoe also known as "Rosy Ginger" and "Jangli Adrak" is one of the most important aromatic and medicinal plant of family Zingiberaceae....

The plant Artemesia nilagirica, collected from the terrain of the Himalayan region in Uttarakhand, India, was evaluated for its phytochemical composition, antioxidant and anti-inflammatory activities in vitro. The different polarity extracts of the plant were prepared and subjected to GC-MS analysis for their phytochemical composition. Twenty-six c...

The objective of the present study was to examine the chemical compositions of Salvia coccinea oleoresins prepared in methanol and petroleum ether. GC-MS analysis of Salvia coccinea methanolic oleoresin (SCMO) and Salvia coccinea ether oleoresin (SCEO) resulted in the identification of 15 and 12 constituents, comprising 84.7 and 81.2% of the total...

The medicinal traits of Callicarpa macrophylla Vahl. have been used in traditional and folklore medicinal system, however, scientific evaluation of such medicinal plants have not been much explored yet. Different solvent extracts of the whole plant of C. macrophylla from the Himalayan region are the key subject of interest to evaluate and exhibit t...

Abstract The present study aimed to identify the bioactive constituents in the chloroform extract of H. spicatum rhizomes (HS-RCLE), further evaluated for its in-vitro pesticidal activities validating via molecular docking techniques. GC/MS analysis of HS-RCLE identified 14 compounds contributing 84.1 % of the total composition. The extract was dom...

A chemical study on the rhizomes of Hedychium spicatum resulted in the isolation and identification of labdane diterpenes, hedychilactone A (1), and B (2). The chemical structure of known compounds 1 and 2 were elucidated based on extensive spectral data analyses and identified by comparing their experimental spectral data with the reported data in...

Micromeria biflora Benth. (Lamiaceae) is an important medicinal herb used widely for treating the ailments like nose bleeds, toothaches, wounds, and sinusitis. The essential oil (EO) of Micromeria biflora collected from Bageshwar, Uttarakhand in India was examined by GC and GC/MS, which contributed 97.1% of the total essential oil. The EO was found...

Te objective of the current study was to evaluate the altitudinal variability in chemical compounds, nematicidal, insecticidal, herbicidal, and antifungal activity of the essential oils of H. coronarium collected from four diferent habitats of Tarai and Kumaun region of Uttarakhand. Essential oils were hydro-distilled from rhizomes of H. coronarium...

Background: Alpinia malaccensis, commonly known as "Malacca ginger" and "Rankihiriya," is an important medicinal plant of Zingiberaceae. It is native to Indonesia and Malaysia and widely distributed in countries including Northeast India, China, Peninsular Malaysia and Java. Due to vide pharmacological values, it is necessary to recognize this spe...

The aim of present study was to investigate the phytochemical analysis and biological activities of the essential oils of Ocimum gratissimum L. and Ocimum sanctum L. The GC-MS analysis of Ocimum gratissimum essential oil (OGEO) and Ocimum sanctum essential oil (OSEO) comprised 97.3% and 95.9% of the total compositions respectively, with phenylpropa...

Cinnamomum camphora L. belonging to family Lauraceae, is an aromatic evergreen plant which has been traditionally used to heal several health problems such as cold, fever, pneumonia, diarrhea and various infections. In this study, four drying treatments (sun, shade, blower and oven) were applied on the leaves of C. camphora collected in summer seas...

In the present investigation the chemical composition and biological activities of essential oils (EOs) of the five Strobilanthes species viz., S. angustifrons C. B. Clarke, S. pentastemonoid M, (Nees) T. Anderson, S. tomentosa (Nees) J.R.I.Wood, S. attenuata (Wall. ex Nees) Jacq. ex Nees and S. glutinosa (Nees) collected from different locations o...

Artemisia annua L. [family Asteraceae (Compositae)] is a well-known medicinal herb with a broad spectrum of applications in pharmaceuticals and cosmetics. The present study aimed to investigate the variation of essential oil (EO) composition from the plant aerial parts, harvested in rainy (AAREO) and winter (AAWEO) seasons. GC-MS analysis of AAREO...

The current study describes the analysis of the phytochemical composition and biological activities of various polarity extracts of the Anaphalis busua plant that was collected at an altitude of 1654 m in the Himalayan terrain of Uttarakhand, India. The extracts were prepared by the cold percolation method, which was then subjected to GC-MS for phy...

The objectives of the present study were to investigate the phytochemical composition of essential oils (EO) from rhizomes of Acorus calamus collected from Jorhat, Assam; Munsyari and Pantnagar, Uttarakhand, India. EOs were studied for different pesticidal activities viz; nematicidal, insecticidal, and herbicidal activity. To study the synergistic...

The objective of the current study was to re-examine the chemical components of the essential oil (EO) from the aerial parts of Skimmia anquetilia N.P. Taylor & Airy Shaw in two different seasons designated as Skimmia anquetilia rainy season essential oil (SKREO) and Skimmia anquetilia winter season essential oil (SKWEO). The GC-MS analysis of SKRE...

Medicinal and aromatic plants are known to have a number of biologically active compounds. Since ancient times, such plants have been used in ethnopharmacology. A number of medicines have been developed from plant origin by researchers and Researchers continue to be interested in plant-based medicines.. Zingiberaceae is a well-known plant family fo...

Alkaloids are the most basic, naturally occurring nitrogen-containing organic compounds frequently found in plants, animals and microbes. These are the important secondary metabolites known to have a number of therapeutic and pharmacological properties. Several studies have focused on the wide range of pharmaceutical potential of alkaloids from var...

Alkaloids are the most basic, naturally occurring nitrogen-containing organic compounds frequently found in plants, animals and microbes. These are the important secondary metabolites known to have a number of therapeutic and pharmacological properties. Several studies have focused on the wide range of pharmaceutical potential of alkaloids from var...

Cancer is a type of illness that may begin in any body tissue or organ and spread to other tissues when abnormal cells multiply unchecked, invade nearby regions of the body, and/or move to other body organs. Cancer is a major problem, causing remarkable deaths in both developing and developed countries. Prevention is better than cure as cancer ther...

Globba sessilifora Sims is an aromatic rhizomatous herb of family Zingiberaceae which is endemic to Peninsular India. Tis study frst reports the phytochemical profle and pesticidal potential of oleoresins obtained from the aerial and rhizome parts of Globba sessilifora Sims. Te oleoresins were prepared by the cold percolation method and were analyz...

The objective of the current study was to reexamine the chemical components of the essential oil (EO) from the aerial parts of Skimmia anquetilia N.P. Taylor & Airy Shaw in two different seasons designated as Skimmia anquetilia rainy season essential oil (SKREO) and Skimmia anquetilia winter season essential oil (SKWEO). The GC-MS analysis of SKREO...

This study was aimed to explore the chemical composition and biological activities of essential oil from aerial part of Mosla dianthera along with its major isolated compound, carvone. The hydro-distilled essential oil was analysed by GC-MS and biological activities were investigated in terms of antioxidant, anti-inflammatory, herbicidal, antibacte...

Hedychium coronarium J. Koenig belongs to the family Zingiberaceae, generally known as butterfly ginger, butterfly lily, cinnamon jasmine, garland flower and ginger lily. It is a medicinal plant grown throughout India, Southeast Asian countries, China, Japan, and Brazil. Traditionally, it is used as a febrifuge, tonic, anti-rheumatic, used to treat...

The objective of this study was to assess the nematicidal, insecticidal, antifungal, and antibacterial potential in Ajuga parviflora Benth butanol extract (APBE). The GC-MS analysis of the extract resulted in the identification of over 32 constituents, comprising 81.7% of the total composition of which glycerol (15.8%), 3,5-dimethylphenyl isocyanat...

The present study describes chemical composition, phytochemicals, antifungal activities, antioxidant assays and total phenolic content of essential oil and varied polarity solvent extract from flowers of Alpinia malaccensis (Burm.f.). Total 27 components were identified in essential oil by GC-MS with terpinen-4-ol (28.6%) and α- terpineol (12.8%) a...

Acmella uliginosa, an edible herb belonging to Asteraceae family, was collected from the Terai region of Uttarakhand, India. Methanol and hexane extracts of the whole plant were prepared using soxhlet apparatus. The GC-MS analysis of plant extracts identifies 22 and 35 major compounds of methanol and hexane extracts which comprises of 74.21% and 73...

Plants respond against biotic and abiotic stresses through various morphological, biochemical, and molecular mechanisms. Biochemical mechanisms of self-defense against plant pathogens are widespread, extremely dynamic, and mediated by both direct and indirect defenses. Physical or morphological and bio-chemical mechanisms such as formation of diffe...

Cinnamomum leaves are used extensively as spices in food and to produce essential oils for flavoring and preservation of food besides having a number of biologically active compounds making it an important part of our traditional systems of medicines. The leaves of Cinnamomum zeylanicum were collected from three different attitudes of Uttarakhand t...

Agrochemicals, commonly referred to as crop protection chemicals or pesticides, play a key role in controlling harmful pests that are responsible for damaging crops, thereby significantly reducing the quality and yield of crops. Agrochemicals comprise insecticides that protect crops either by killing insects or by preventing their attacks; antimicr...

Nepeta hindostana, commonly known as the North Indian Catmint, is an important Indian aromatic and medicinal plant of family Lamiaceae. Its leaves are extensively used as cardiac tonic and gargle to cure sore throat in the form of extract or decoction. However, there are few reports on the chemical composition and biological activities of leaf esse...

A comparative study of volatiles, antioxidant activity, phytotoxic activity, as well as in silico molecular docking and ADMET study, was conducted for essential oils from three Vitex species, viz., V. agnus-castus, V. negundo, and V. trifolia. Essential oils (OEs) extracted by hydrodistillation were subjected to compositional analysis using GC-MS....

This study aims to quantitative, qualitative estimation of phenolics, antioxidant (DPPH free radical scavenging, nitric oxide radical scavenging, superoxide anion scavenging, reducing power and metal chelating activity), and herbicidal properties of methanol extract of Vitex species {(Vitex negundo L. collected from Haldwani (VNH), Bhimtal (VNB) an...

The aim of present study was to evaluate chemical composition and different biological activities viz., pharmacological and antioxidant activities of essential oils. The chemical composition of essential oils was determined by gas chromatography/ mass spectrometry while biological activities were evaluated by standard protocols. Essential oils of H...

This research assessed the seasonal variation in the chemical composition and biological activities of essential oils extracted from Thymus linearis Benth. in rainy season and winter season. The essential oil highest yield was recorded in the rainy season. The oils were analyzed by GC and GC-MS. Thymol was the marker component in both oils with...

Hedychium coccineum Buch. Ham. ex Sm. is a perennial rhizomatous herb belonging to the family Zingiberaceae. The aim of the present study was to compare the chemical composition and biological activities of H. coccineum rhizome essential oil (HCCRO) and H. coccineum aerial part essential oil (HCCAO). The plant material was subjected to hydro-distil...

Essential oils, also called volatile odoriferous oil, are aromatic and volatile liquids extracted from different parts of plants by steam distillation, dry distillation, hydro-diffusion, or other suitable mechanical methods without heating. Essential oils and their constituents have wide range of applications in the field of pharmaceutical, sanitar...

The aim of the present study was to evaluate nematicidal, herbicidal and insecticidal activity of rhizome chloroform oleoresin of Hedychium coronarium J. Koenig. The GC-MS analysis led to identification of fifteen constituents comprising of 87.9% of total oleoresin composition. The major component found to be was Coronarin E (20.1%). The oleoresin...

Now-a-days pesticides become an essential part of our up-to-date life and help us to preserve agricultural fields, stored grain, flowers beds, and exterminate pests that extend harmful infectious diseases. Insecticides are chemicals used to eliminate insects that attack, destroy, or injure plants. Insecticides are beneficial to crops but also have...

Plants produce secondary metabolites for defense and based on the biosynthetic pathway, these chemical compounds are broadly divided into three categories namely nitrogen-containing compounds, phenolic compounds, and terpenes. Essential oils and other such compounds are known for their biological activities. The extraction of essential oils is...

The present study investigated the variability in the content, composition, antioxidant and anti-inflammatory potential of the volatile oil constituents of aerial parts of Ocimum americanum Linn. collected at two stages from two sites of north Himalayas. The essential oils of O. americanum at vegetative and full blooming stages were isolated by usi...

Background The Himalayan region has been reported as rich accumulation of natural wealth, particularly of aromatic and medicinal plants. Indian Ajuga species (Ajuga brachystemon, Ajuga integrifolia, Ajuga macrosperma and Ajuga parviflora) belonging to Lamiaceae family have been reported from different parts of Uttarakhand. Phytochemical studies rev...

The present study was carried out for analysis of hexane and methanol extract of Limnophila indica and evaluated for its in-vitro herbicidal efficacy against Raphanus sativus in terms of three parameters that is inhibition of germination, inhibition of coleoptiles growth and inhibition of radical growth. The plant extracts of the plant L. indica ex...

The aim of the study was to compare the chemical composition and biological activities of Coleus barbatus aerial part essential oil (CBAEO) and Coleus barbatus root part essential oil (CBREO). The hydrodistilled essential oils (EOs) were analysed by gas chromatography-mass spectrometry (GC-MS) and biological activities were investigated in terms of...

Caryopteris foetida (D. Don) Thell. also known as stinking blue beard is an aromatic shrub of family verbenaceae. The essential oils from the leaf, stem, and seeds of C. foetida were extracted and analyzed in search of a novel compound. Over 73 constituents were identified from the essential oils of leaf, seeds, and stem. The major compound identif...

Background & Aim: In traditional 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 esse...

Every species has its own way of communication with diverse range of complexity that is relatively simplified in case of higher organisms while relatively complex in lower organisms like insects. Infochemical mediated chemical signal dissemination is very unanimous mode of communication in insects. Inability of lower organisms to emit acoustic sign...

The current study deals with different biological activities and phytochemical composition of methanolic and ethyl acetate oleoresins from rhizomes of Hedychium spicatum Sm. Chemical analysis of Hedychium spicatum rhizome methanolic oleoresin (HSRMO) revealed the presence of curzerene (14.7 %), coronarin E (13.3 %), curdione (10.2 %) and linderazul...

Abstract The essential oils from the fresh leaves of three Melalecua spp. viz; Melaleuca leucadendron (L.) Melaleuca linariifolia Sm. and Melaleuca bracteata F. Muell. growing in Tarai region of North India were analyzed by a combination of gas chromatography/mass spectrometry. The analysis revealed the presence of several constituents of industria...

Essential oils are odorous and volatile compounds found only in 10% of the plant kingdom and are stored in plants in special brittle secretory structures, such as glands, secretory hairs, secretory ducts, secretory cavities or resin ducts. Essential oils constitute a major group of agro-based industrial products and they find applications in variou...

Present research reports chemical composition, antioxidant, anti-inflammatory insect anti-feedant, and sprout suppressant activity in essential oil from aerial parts of Cotinus coggygria Scop. (syn. Rhus cotinus) growing widely in Uttarakhand, Himalaya. C. coggygria Scop. is commonly known as ‘smoke tree’ or ‘smoke bush’ due to its flowers those gi...

The present investigation was accomplished to study the chemical variability of the essential oil of the plant Mentha aquatica L. collected from Bhimtal, Uttarakhand, India during different seasons ranging from April to December. The essential oils collected at various month intervals were subjected to be analyzed with GC along with MS and FID for...

The present study investigated the compositional variation and antioxidant potential of Origanum vulgare L. (subsp. vulgare) collected from three districts of Uttarakhand, India. The essential oil composition was analyzed by GC and GC/MS, and the antioxidant potential was evaluated using 2,2ʹ-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging acti...

The methanolic and chloroform extracts of leaves and bark of Zanthoxylum armatum DC. were evaluated for their phytochemical analysis and biological activities. In phytochemical analysis, fargsin was identified as major constituent in leaves methanolic and leaves chloroform extracts. t-butylamine and benzoxazole, 2-(isobutylamino) were identified as...

Premna mucronata Roxb., commonly known as Agyon, is a plant of family Lamiaceae. This study dealt with the phytochemical analysis of the essential oil from the leaves of Premna mucronata Roxb. (PMLO) using GC/MS technique and screening of its antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH), metal chelating and reducing power assays...

Zingiber chrysanthum Roscoe is a traditional medicinal plant species sparsely occurring in Kumaun Lesser Himalaya, Uttarakhand. Seeds of this species were collected from wild populations and essential oil was extracted. This essential oil was phytochemically analyzed by GC/MS and various biological activities viz: antioxidant, anti-inflammatory, an...

Zingiber chrysanthum Roscoe is a traditional medicinal plant species sparsely occurring in Kumaun Lesser Himalaya, Uttarakhand. Seeds of this species were collected from wild populations and essential oil was extracted. This essential oil was phytochemically analyzed by GC/MS and various biological activities viz: antioxidant, anti-inflammatory, an...

Medicinal plants are the important element of indigenous medical systems in all over the world. Over the centuries societies around the world have developed their own tradition to make sense of medicinal plants and their uses. Mosla dianthera (Buch.-Ham. ex Roxb.) Maxim. is an important medicinal plant of the family Lamiaceae. The aerial part of th...

The aim of present study was to analyzed the chemical composition and to evaluate biological activities of the ethyl acetate leaf, stem and root extract of A. solanacae Roxb. Extracts were obtained from different parts of the plant using Soxhlet method in ethyl acetate. The extracts so obtained were chemically analysed qualitatively and quantitativ...

Chemical composition, biological activities and antioxidant activity of Salvia reflexa (Lamiaceae) was studied. Essential oil of this species show strong antifeedant and antifungal activity.

Premna mucronata Roxb. commonly known as agyon, is a high medicinal value plant belonging to the family Lamiaceae. The phytochemical, antioxidant, anti-inflammatory and antibacterial potential of leaves and bark hexane extracts of Premna mucronata (PMLH and PMBH) were investigated in this study. GC/MS analysis was done to determine the compounds pr...