Snehashish Dutta - Academia.edu (original) (raw)

Papers by Snehashish Dutta

Research paper thumbnail of Chromosomal studies in some species of Ipomoea L occurring in Assam

Research paper thumbnail of Antioxidant activity and nutraceutical property of the fruits of an ethno-medicinal plant: Carissa carandas L. found in Brahmaputra valley agro-climatic condition

Journal of Pharmaceutical Sciences and Research

Research paper thumbnail of The Karyotype of the Ipomoea’s of Assam Including Two Newly Recorded Variants

CYTOLOGIA, 2017

Karyotype can be designated as representative of the species, and in some instances even of the g... more Karyotype can be designated as representative of the species, and in some instances even of the genus. As karyotype is subjected to variation it can be used in the identification of the species or variety and to establish relationships amongst the species. Ipomoea L. the largest genus of the family Convolvulaceae has been subjected to modification many times and is constantly under debate. Taking this into consideration, the genus Ipomoea has been taken up for research. Over 500 species are distributed worldwide and in India just over 60 species could be recorded. Karyomorphologically, Ipomoea L. is a very inadequately investigated genus. To study the chromosome morphology, different parameters were considered such as arm ratio, centromeric index, presence or absence of satellites, total chromatin length, and total form percentage. Using the arm ratio of the long arm to short arm, two classes of chromosomes were obtained metacentric and submetacentric. Thirteen specimens were investigated and it was established that their somatic chromosome counts varied from 2n=28 to 2n=32, indicating that the species of the genus fall under several basic series as x=14, 15, and 16 of which x=15 is the most frequent. In the investigation process, two new variants each of Ipomoea aquatica and Ipomoea cairica could also be recorded for the first time. Besides these, all the examined species possessed a variable number of satellite chromosomes ranging from two to 12, which could be aptly used as chromosomal markers for their proper taxonomical characterization.

Research paper thumbnail of Phyto-chemical properties of Momordica cochinchinensis Spreng: an underutilised wild edible fruit from Cachar Hills, Assam

Agroforestry Systems, 2016

Momordica cochinchinensis Spreng., belonging to family cucurbitaceae, is a large climber generall... more Momordica cochinchinensis Spreng., belonging to family cucurbitaceae, is a large climber generally found under wild growing condition in the Cachar hills region of Assam, India. The fruits of this tuberous plant are supposed to possess high nutritional and medicinal properties and have been widely used in many traditional medicine practices. The present study was carried out to scientifically validate the presence of nutritional property and antioxidant activity of Momordica cochinchinensis found in this part of India. The experimental result reveals that the fruits have a high nutraceutical property and a considerable amount of antioxidative activity as the IC50 value was found to be 294.13 ± 0.46 μg/ml.

Research paper thumbnail of Studies on the Cytotoxic Effect of Oil Refinery Sludge on Root Meristem

Cytotoxicity of the oil refinery s ludge was s tudied us ing Allium cepa L. a s a tes t plant. On... more Cytotoxicity of the oil refinery s ludge was s tudied us ing Allium cepa L. a s a tes t plant. Onion roots were treated with different concentrations of pollutant for d iffe re n t durations along with controls . The high mitotic index and lower percentage of abnormality was very much evident in roots treated with diluted pollutants . The mitotic index showed decreas ing tendency with parallel increase in pollutant concentrations . Binucleate, s ticky anaphase eros ion, C-metaphase, polyploidy, unequal dis tribution of chromosomes , spiral nature of chromosome and dis tortion of poles are some of the c o mmo n a b n o rma lities observed in all treatments . Both duration and concentration of the treatment influenced the cell divis ion. The types and percentage of abnormalities confirmed impact of s ludge generated by oil refinery on crop and other biota in the agro-ecosys tem.

Research paper thumbnail of Chromosomal studies in some species of Ipomoea L occurring in Assam

Research paper thumbnail of Antioxidant activity and nutraceutical property of the fruits of an ethno-medicinal plant: Carissa carandas L. found in Brahmaputra valley agro-climatic condition

Journal of Pharmaceutical Sciences and Research

Research paper thumbnail of The Karyotype of the Ipomoea’s of Assam Including Two Newly Recorded Variants

CYTOLOGIA, 2017

Karyotype can be designated as representative of the species, and in some instances even of the g... more Karyotype can be designated as representative of the species, and in some instances even of the genus. As karyotype is subjected to variation it can be used in the identification of the species or variety and to establish relationships amongst the species. Ipomoea L. the largest genus of the family Convolvulaceae has been subjected to modification many times and is constantly under debate. Taking this into consideration, the genus Ipomoea has been taken up for research. Over 500 species are distributed worldwide and in India just over 60 species could be recorded. Karyomorphologically, Ipomoea L. is a very inadequately investigated genus. To study the chromosome morphology, different parameters were considered such as arm ratio, centromeric index, presence or absence of satellites, total chromatin length, and total form percentage. Using the arm ratio of the long arm to short arm, two classes of chromosomes were obtained metacentric and submetacentric. Thirteen specimens were investigated and it was established that their somatic chromosome counts varied from 2n=28 to 2n=32, indicating that the species of the genus fall under several basic series as x=14, 15, and 16 of which x=15 is the most frequent. In the investigation process, two new variants each of Ipomoea aquatica and Ipomoea cairica could also be recorded for the first time. Besides these, all the examined species possessed a variable number of satellite chromosomes ranging from two to 12, which could be aptly used as chromosomal markers for their proper taxonomical characterization.

Research paper thumbnail of Phyto-chemical properties of Momordica cochinchinensis Spreng: an underutilised wild edible fruit from Cachar Hills, Assam

Agroforestry Systems, 2016

Momordica cochinchinensis Spreng., belonging to family cucurbitaceae, is a large climber generall... more Momordica cochinchinensis Spreng., belonging to family cucurbitaceae, is a large climber generally found under wild growing condition in the Cachar hills region of Assam, India. The fruits of this tuberous plant are supposed to possess high nutritional and medicinal properties and have been widely used in many traditional medicine practices. The present study was carried out to scientifically validate the presence of nutritional property and antioxidant activity of Momordica cochinchinensis found in this part of India. The experimental result reveals that the fruits have a high nutraceutical property and a considerable amount of antioxidative activity as the IC50 value was found to be 294.13 ± 0.46 μg/ml.

Research paper thumbnail of Studies on the Cytotoxic Effect of Oil Refinery Sludge on Root Meristem

Cytotoxicity of the oil refinery s ludge was s tudied us ing Allium cepa L. a s a tes t plant. On... more Cytotoxicity of the oil refinery s ludge was s tudied us ing Allium cepa L. a s a tes t plant. Onion roots were treated with different concentrations of pollutant for d iffe re n t durations along with controls . The high mitotic index and lower percentage of abnormality was very much evident in roots treated with diluted pollutants . The mitotic index showed decreas ing tendency with parallel increase in pollutant concentrations . Binucleate, s ticky anaphase eros ion, C-metaphase, polyploidy, unequal dis tribution of chromosomes , spiral nature of chromosome and dis tortion of poles are some of the c o mmo n a b n o rma lities observed in all treatments . Both duration and concentration of the treatment influenced the cell divis ion. The types and percentage of abnormalities confirmed impact of s ludge generated by oil refinery on crop and other biota in the agro-ecosys tem.