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Abstract

AIR POLLUTION TOLERANCE INDEX AND ANTIOXIDANT ACTIVITY OF PLANT LEAVES COLLECTED AT SAGO SERVE INDUSTRY, SALEM, TAMIL NADU, INDIA.

M. Krishnaveni*, Harsha V. Rari and Santhosh Kumar J.

ABSTRACT

Air pollution has detrimental effect on nearly all phases of our lives. Hence, it was decided to study the air pollution tolerance index of the plant leaves from the study area. Method: Aqueous leaf extract was used for the whole study. Biochemical components, secondary metabolites, antioxidant activities were assessed by following standard procedures. Fresh leaves were collected from the study area daily until the completion of the study. Results: The dust collected in the specific area was found to be in the range of 0.078±0.05, 0.132±0.02mg/g, this indicates pollution load. The ascorbic acid content was high with Azadirachta indica showing 0.36±0.00mg/g. The total chlorophyll content was high with Terminalia catappa showing 45.03±0.42mg/g. The relative water content of Ficus religiosa was found to be 73.04±2.76%. The aminoacid content was high with Phyllanthus emblica showing 6.60±4.51mg/g. The carbohydrate content was high with Swietenia mahagony showing 9.13±6.39mg/g. All the plants studied was sensitive towards pollution and none was found to be tolerant species in the experimental site selected. The total phenolic content was high with both Psidium guajava and Terminalia catappa showing 31.5±0.46mg/g. Mangifera indica showed highest total flavonoid content of 27.5±1.84mg/g. The reducing power activity was high with Terminalia catappa 26.0±0.00mg/g. Similarly, nitric oxide scavenging activity was high (18.4±12.5mg/g) with Murraya koenigii. Total antioxidant activity measured interms of phosphomolybdenum assay was high with Swietenia mahagony 13.0±8.50mg/g. Metal chelating activity was moderate with all the plants studied. Ficus religiosa showed highest carotenoid content of 16.30±0.05mg/g. Likewise, highest protein content was observed with Murraya koenigii 25.00±0.35mg/g. Conclusion: The results of the present study showed that, all the plants has to be protected as they belong to sensitive categoray. And it will be better to plant more of tolerant species inorder to protect the sensitive tree species. And also the results of secondary metabolites and antioxidant activities showed that the defense system of plants has worked out properly to fight against the pollution load.

Keywords: 10.20959/wjpr20166-6360


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