Browsing by Author "Muralidharan, S."

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Organochlorine Pesticide Residues in the Marine Fishes of Coimbatore Market – Suitability for Human Consumption
(SACON, 2012) Jayanthi, P.; Muralidharan, S.
The current study has attempted to document the organochlorine pesticide residues in select species of commercially important marine fishes, received from Cochin and Rameshwararn, and sold at Coimbatore market. A total of 716 fish samples belonging to seven species, namely Carangoides malabaric, Cynoglossus macrolepidotus, Nemipterus japonicus, Rastrelliger kanagurta, Sardinella longiceps, Scomberomorus commersonn and Sphyraena barracuda caught at Cochin and Rameshwaram were collected from the Coimhatore market. The samples were collected with regular intervals during the study period (October 2004 . September 2006) which fell into eight quarters, with three months being one quarter.
Pesticide Residues in select components of an Agroecosystem adopting organic and conventional farming in Padayetti Village, Palakkad District, Kerala
(SACON, 2014) Ganesan, K.; Muralidharan, S.
The ever increasing human population and the corresponding demand for food have forced the producers to intensify their efforts to increase the productivity. Among the grain crops, paddy is the highest pesticide consuming crop in India. Increasing awareness on health and many environmental issues associated with the indiscriminate use of chemical fertilizers and pesticides has led to interest in alternate methods of agricultural farming which are environment-friendly and economically feasib le. The Kerala State Biodiversity Board (KSBB) through Department of environment and Climate Change (DoEee) launched a demonstration project known as "Granary of Kerola" in Palakkad district in 2009 to conserve biodiversity associated with agroecosystems by totally avoiding chemical inputs in agriculture. To protect the paddy crop from weeds, insects and diseases, pesticides such as insecticides, herbicides and fungicides are used. Moreover, determination of pesticide residues in paddy has become increasingly essential for consumers, producers and authorities responsible for quality control. Hence, this study was conducted to investigate pesti cide residues in different environmental components adopting two different types of cultivation methods, namely organic and conventional.
Polychlorinated Biphenyl (PCB) residues in marine fishes available in Coimbatore market and their suitability for human consumption
(SACON, 2011) Alaguraj, A.; Muralidharan, S.
Seven species of marine fishes totalling 732 individuals caught at Cochin and Rameshwaram coasts, and sold in Ukkadam fish market. Coimbatore between October 2004 and October 2006 were analysed for residues of 32 individual congeners, including six indicator PCBs (PCB 28, 52, 101, 138, 153 and 180) with Gas Chromatograph coupled with Mass Selective Detector. Fishes included in the present study are Indian Mackerel (Rastrelliger kanagurta), Japanese Threadfin Bream (Nemipterus japonicus), Oil Sardine (Sardinela Iongiceps), Great Barracuda (Sphyraena barracuda), Malabar Travelly (Carangoides malabaricus), Tongue Sole (Cyanoglossus macrolepidotus) and King Seer (Scomberomollus commersonil)' Selection was based on human consumption (preference), commercial value and availability throughout the year in both the locations.
Polycyclic aromatic hydrocarbon contamination in Pallikaranai wetland, Chennai, Tamil Nadu, India; Fish as an Indicator.
(SACON, 2020) Mythreyi, D.; Muralidharan, S.
Enormous quantities of man-made chemicals are being used every day to meet the ever increasing food, energy, transport and industrial demands. During the past few decades, there has only been a steady increase in the use of these chemicals leading to their excessive presence throughout the global environment. Wetlands, being the most fragile ecosystems have suffered the maximum. Extensive stretches of wetland habitats have been altered and destroyed. Among the gazillion types of chemicals, Persistent Organic Pollutants (POPs) are significant because they are resistant to degradation in the environment and biota. Due to their fat soluble nature and resistance to degradation, ingestion of certain POPs by fauna leads to bioaccumulation throughout their lives, generally in fat tissues, and biomagnification through food chain. Among the POPs, Polycyclic Aromatic Hydrocarbons (PAHs) are highly prevalent in vertebrates, particularly fishes. Polycyclic Aromatic Hydrocarbons (PAHs) are a unique class of POPs constituted by hundreds of individual organic compounds. These ubiquitous environmental contaminants are wide-spread in the air, bonded to particulate matter and readily bioavailable. Studies have demonstrated the carcinogenic, mutagenic and teratogenic behaviour of many of the PAHs. Based on their properties, 16 PAHs are listed as “priority pollutants” by the U.S. Environmental Protection Agency (EPA). These 16 PAHs are being measured and monitored in different environmental components in ecosystem throughout the globe.