Papers by sachidananda swain
Frontiers in Nutrition
IntroductionRice crop meets the calorie and nutritional requirements of a larger segment of the g... more IntroductionRice crop meets the calorie and nutritional requirements of a larger segment of the global population. Here, we report the occurrence of intra-varietal variation in a popular rice landrace C14-8 traditionally grown under the geographical isolation of the Andaman Islands.MethodsBased on grain husk color, four groups were formed, wherein the extent of intra-varietal variation was studied by employing 22 agro-morphological and biochemical traits.ResultsAmong the traits studied, flavonoid and anthocyanin contents and grain yield exhibited a wider spectrum of variability due to more coefficients of variation (>25%). The first five principal components (PCs) of principal components analysis explained a significant proportion of the variation (91%) and the first two PCs explained 63.3% of the total variation, with PC1 and PC2 explaining 35.44 and 27.91%, respectively. A total of 50 highly variable SSR (HvSSR) markers spanning over 12 chromosomes produced 314 alleles, which r...
LEGUME RESEARCH - AN INTERNATIONAL JOURNAL, 2018
The extent of morphological variation among farmers’ varieties of urdbean was assessed using 21 D... more The extent of morphological variation among farmers’ varieties of urdbean was assessed using 21 DUS and 9 agronomic parameters. A set of 56 farmers’ varieties collected from different parts of the Andaman Islands were assessed for genetic diversity. Cluster analysis assigned farmers’ varieties into groups on the basis of agronomic performance rather than their origin and was identified 9 homogeneous clusters, it was able to separate 56 farmers’ varieties based on morphological and agronomic traits. Using cluster analysis by unweighted pair group with arithmetic mean (UPGMA) method and grouping of all farmers’ varieties exhibited the presence of wide genetic diversity by the formation of 9 clusters. Cluste- I had maximum number of farmers’ varieties i.e. 26 while, cluster VIII had only one (ANFVU-11-29). The pattern of distribution of farmers’ varieties into clusters assigned on the basis of agro-morphological performance and demonstrating that geographical isolation may not be the o...
Journal of Pharmacognosy and Phytochemistry, 2019
Turmeric is one of the important spice that has many medicinal properties. The co-2 variety of tu... more Turmeric is one of the important spice that has many medicinal properties. The co-2 variety of turmeric grown in Andaman and Nicobar Islands were subjected to phytochemical assay. The results showed that the rhizomes of turmeric had highest phenolic (31.62 mg/g GAE) and flavonoid content (18.02 mg/g GAE) in methanolic extract than aqueous extract. The antioxidant assay was done by DPPH activity of two extracts and were increased with increasing concentration (10-75 µg/ml), the DPPH activity was showed highest in methanolic extract (26.02 mg BHA/g). The antimicrobial scavenging activity was found to be 49.79% and 17. 24% in methanolic and aqueous extract respectively. The methanol and aqueous extracts of the C. longa showed no antimicrobial activity against R. solanacearum, C. gloeosporioides and Fusarium spp., at all dilutions
Industrial Crops and Products, 2015
ABSTRACT
International Journal of Current Microbiology and Applied Sciences, 2019
12593 tonnes (t) and productivity of 2.58 t/ha (DOES, 2018). Though these yield was at par with t... more 12593 tonnes (t) and productivity of 2.58 t/ha (DOES, 2018). Though these yield was at par with that of country (2.55 t/ha), it was far behind the highest productivity (3.998 t/ha) reported from the state of Punjab (Agricultural Statistics at a Glance, 2017) in the country. This huge yield gap (35.5%) was
Journal of Pharmacognosy and Phytochemistry, 2020
Since last few decades, there has been an exponential growth in popularising herbal medicine owin... more Since last few decades, there has been an exponential growth in popularising herbal medicine owing to its natural origin and lesser side effects while curing different ailments in the body. The present study was undertaken to reveal the effect of solvent (methanol, ethanol and aqueous) on phytoconstituents and antioxidant activity of Alpinia calcarata rhizome. Methanolic extract had highest phenolic content (21.08 mg/g GAE) followed by ethanolic (17.52) and aqueous extract (8.91 mg/g). DPPH radical scavenging activity was found to be highest in ethanolic extract (83.9%) and lowest in aqueous extract (58.01%). However, ABTS activity was found to be highest in methanolic extract (7.1 mg trolox/g) and lowest in aqueous extract (5.6 mg/g). Similar observations were found for Nitric oxide (NO) and FRAP activity. The metal chelating activity (MCA) was highest in ethanolic extract (84.6%) and lowest in methanolic extract (80.7%). This implied the potentiality ethanolic extract of Alpinia rhizome powder to be used in food and herbal industries for the preparation of nutraceutical compounds and herbal supplements.
Scientific Reports, 2021
Dragon fruit (Hylocereus spp.), an important tropical fruit belonging to the family Cactaceae, is... more Dragon fruit (Hylocereus spp.), an important tropical fruit belonging to the family Cactaceae, is rich in essential nutrients such as vitamins, minerals, complex carbohydrates, dietary fibres and antioxidants. This study aims to distinguish three dragon fruit species well adapted to Andaman and Nicobar Island through morphological (34 quantitative and 26 qualitative traits), biochemical (5 traits) and molecular (14 ISSR primers) characterization. Morphological characterization revealed that presence of considerable amount of genetic variations among them especially for fruit characters viz., colour of peel and pulp. Cladode characters such as number of spines (3–5), length of areoles (mm) as 1–4, margin ribs of cladode (convex or concave) and its waxiness (weak or strong white waxy or light waxy) could be used for identification of three Hylocereus spp. under present study. Highest co-efficient of variation (%) obtained for pulp weight (88.7), whereas, lowest in distance of anthers ...
International Journal of Chemical Studies, 2021
Kalmegh (Andrographis paniculata Nees.) is known as king of bitterness, Kalmegh is used as tradit... more Kalmegh (Andrographis paniculata Nees.) is known as king of bitterness, Kalmegh is used as traditional medicine for curing different ailments and is known for its wide medicinal properties. The whole herb is used for herbal cure at Andaman Islands and is grown in homestead gardens, An attempt was made to study the phytochemical composition and andrographolide content of both leaves and stem extracts. Methanolic extract yielded maximum total phenols in both leaf (24.18 mg/g) and stem extract (27.35 mg/g). Flavonoid content was also maximum in methanolic extract of leaf (52.57 mg/g) and stem (71.82 mg/g) of A. paniculata. Highest DPPH activity was found in methanolic extract in both leaf (7.08 mg BHT/g) and stem samples (7.15 mg BHT/g). The NO activity was highest in ethanolic extract in both leaf (13.85 mg vit C/g) and stem (12.86 mg Vit C/g). The methanol extract of leaf (14.65 mg EDTA/g) and stem (12.85 mg EDTA/g) showed higher chelating activity. The acetone extract of stem (3.16 mg vit c/g) and leaf (2.97 mg vit c/g) of Kalmegh showed effective reduction in the activity of hydrogen peroxide. Andrographolide content was maximum in leaf (3.49%) followed by stem (1.59%).
Uploads
Papers by sachidananda swain