Meghali Kalita - Academia.edu (original) (raw)

Papers by Meghali Kalita

Research paper thumbnail of An ethnobotanical study of traditionally used medicinal plants: Case study from Assam, India

Ethnobotany research and applications, Jun 24, 2024

Research paper thumbnail of Extended Distribution of Tupistra Nagarum (Asparagaceae) from Nagaland to Assam, India

Journal of Economic and Taxonomic Botany, Mar 31, 2024

Research paper thumbnail of Impact of the environment on the health: From theory to practice

Environmental Research, 2021

The Erice 56 Charter titled "Impact of the environment on the health: from theory to practic... more The Erice 56 Charter titled "Impact of the environment on the health: from theory to practice" was unanimously approved at the end of the 56th course of the "International School of Epidemiology and Preventive Medicine G. D'Alessandro" held from 3th to 7th November 2019 in Erice - Sicily (Italy) and promoted by the Study Group of "Environment and Health" of the Italian Society of Hygiene, Preventive Medicine and Public Health. The course, that included lectures, open discussions and guided working groups, was aimed to provide a general training on epidemiological and toxicological aspects of the environmental health impact, to be used by public health professionals for risk assessment, without forgetting the risk communications. At the end of the course 12 key points were agreed among teachers and students: they underlined the need of specific training and research, in the perspective of "One Health" and "Global Health", also facing emerging scientific and methodological issues and focusing on communication towards stakeholders. This Discussion highlight the need to improve knowledge of Health and Environment topic in all sectors of health and environmental prevention and management.

Research paper thumbnail of Understanding biochemical defense and phytoremediation potential of Leucas aspera in crude oil polluted soil

Environmental Science and Pollution Research, 2022

The phytoremediation potential and enzymatic defense of a medicinal herb Leucas aspera was studie... more The phytoremediation potential and enzymatic defense of a medicinal herb Leucas aspera was studied in the crude oil contaminated soil. The productivity, antioxidants, and phytochemical and functional group profiles of the plant species in stress conditions were investigated. Besides, changes in enzymes, beneficial bacterial population, and physico-chemical and total oil and grease (TOG) profiles in the contaminated soil were also studied. The results showed improvement in physico-chemical conditions, increase in beneficial bacterial population (4.1–5.4 folds), and decrease in TOG (31.3%) level of the contaminated soil by end of the experimental trials. The L. aspera treated contaminated soil showed enhancement in dehydrogenase (32.3%), urease (102.8%), alkaline phosphatase (174.4%), catalase (68.5%), amylase (76.16%), and cellulase (23.6%) activities by end of the experimental trials. Furthermore, there were significant variations in leaf area index, chlorophyll, and biomass contents of the experimental plant as against the initial level and control. Besides, the significant reduction in IC50 values (24–27.4%) of L. aspera samples grown in contaminated soil confirms the strong antioxidant enzymatic defense of the plant species against the crude oil associated abiotic stress. The Fourier-transform infrared (FT-IR) analysis confirmed the uptake and metabolism of aliphatic hydrocarbons, aldehydes, alkyl halides, and nitro compounds by the experimental plant from the contaminated soil.

Research paper thumbnail of Understanding Biochemical Defense of Leucas Aspera in Crude Oil Polluted Habitat and Changes in Soil Properties

The response of an indigenous medicinal herb Leucas aspera in crude oil polluted habitat was stud... more The response of an indigenous medicinal herb Leucas aspera in crude oil polluted habitat was studied. The productivity, antioxidants, phytochemical and functional group profiles of the plant species in stress conditions were investigated. Besides, changes in enzymes, beneficial bacterial populations and physico-chemical conditions and total oil and grease (TOG) contents in the contaminated soils were also studied. The results showed improvement in physico-chemical conditions, increase in beneficial bacterial population (4.1-5.4 folds) and decrease in TOG (31.3%) level of the contaminated soils by end of the experimental trials. The activities of dehydrogenase, urease, alkaline phosphatase, catalase, amylase and cellulase have increased in the range of 23.6-174.4% after introduction of L. aspera in the contaminated soils. Further, there were significant variations in leaf area index, chlorophyll and biomass contents of the experimental plant as against the initial level and control. ...

Research paper thumbnail of An ethnobotanical study of traditionally used medicinal plants: Case study from Assam, India

Ethnobotany research and applications, Jun 24, 2024

Research paper thumbnail of Extended Distribution of Tupistra Nagarum (Asparagaceae) from Nagaland to Assam, India

Journal of Economic and Taxonomic Botany, Mar 31, 2024

Research paper thumbnail of Impact of the environment on the health: From theory to practice

Environmental Research, 2021

The Erice 56 Charter titled "Impact of the environment on the health: from theory to practic... more The Erice 56 Charter titled "Impact of the environment on the health: from theory to practice" was unanimously approved at the end of the 56th course of the "International School of Epidemiology and Preventive Medicine G. D'Alessandro" held from 3th to 7th November 2019 in Erice - Sicily (Italy) and promoted by the Study Group of "Environment and Health" of the Italian Society of Hygiene, Preventive Medicine and Public Health. The course, that included lectures, open discussions and guided working groups, was aimed to provide a general training on epidemiological and toxicological aspects of the environmental health impact, to be used by public health professionals for risk assessment, without forgetting the risk communications. At the end of the course 12 key points were agreed among teachers and students: they underlined the need of specific training and research, in the perspective of "One Health" and "Global Health", also facing emerging scientific and methodological issues and focusing on communication towards stakeholders. This Discussion highlight the need to improve knowledge of Health and Environment topic in all sectors of health and environmental prevention and management.

Research paper thumbnail of Understanding biochemical defense and phytoremediation potential of Leucas aspera in crude oil polluted soil

Environmental Science and Pollution Research, 2022

The phytoremediation potential and enzymatic defense of a medicinal herb Leucas aspera was studie... more The phytoremediation potential and enzymatic defense of a medicinal herb Leucas aspera was studied in the crude oil contaminated soil. The productivity, antioxidants, and phytochemical and functional group profiles of the plant species in stress conditions were investigated. Besides, changes in enzymes, beneficial bacterial population, and physico-chemical and total oil and grease (TOG) profiles in the contaminated soil were also studied. The results showed improvement in physico-chemical conditions, increase in beneficial bacterial population (4.1–5.4 folds), and decrease in TOG (31.3%) level of the contaminated soil by end of the experimental trials. The L. aspera treated contaminated soil showed enhancement in dehydrogenase (32.3%), urease (102.8%), alkaline phosphatase (174.4%), catalase (68.5%), amylase (76.16%), and cellulase (23.6%) activities by end of the experimental trials. Furthermore, there were significant variations in leaf area index, chlorophyll, and biomass contents of the experimental plant as against the initial level and control. Besides, the significant reduction in IC50 values (24–27.4%) of L. aspera samples grown in contaminated soil confirms the strong antioxidant enzymatic defense of the plant species against the crude oil associated abiotic stress. The Fourier-transform infrared (FT-IR) analysis confirmed the uptake and metabolism of aliphatic hydrocarbons, aldehydes, alkyl halides, and nitro compounds by the experimental plant from the contaminated soil.

Research paper thumbnail of Understanding Biochemical Defense of Leucas Aspera in Crude Oil Polluted Habitat and Changes in Soil Properties

The response of an indigenous medicinal herb Leucas aspera in crude oil polluted habitat was stud... more The response of an indigenous medicinal herb Leucas aspera in crude oil polluted habitat was studied. The productivity, antioxidants, phytochemical and functional group profiles of the plant species in stress conditions were investigated. Besides, changes in enzymes, beneficial bacterial populations and physico-chemical conditions and total oil and grease (TOG) contents in the contaminated soils were also studied. The results showed improvement in physico-chemical conditions, increase in beneficial bacterial population (4.1-5.4 folds) and decrease in TOG (31.3%) level of the contaminated soils by end of the experimental trials. The activities of dehydrogenase, urease, alkaline phosphatase, catalase, amylase and cellulase have increased in the range of 23.6-174.4% after introduction of L. aspera in the contaminated soils. Further, there were significant variations in leaf area index, chlorophyll and biomass contents of the experimental plant as against the initial level and control. ...