BIO ACCUMULATION AND BIOCHEMICAL CONSTITUENTS CHANGES IN GILL TISSUES OF A FRESHWATER FISH LABEO ROHITA EXPOSED TO METAL AND METAL OXIDE NANOPARTICLES IN PERSONAL CARE PRODUCTS Mahudunan Iydroose 1* , Kaler Sonam Sree 1 , Palanivel Velmurugan 2 and Mathan Ramesh 3 1 Department of Environmental Sciences, Bharathiar University, Coimbatore – 641 046 2 Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environment and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk 570-752, South Korea 3 Unit of Toxicology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore – 641 046, Tamil Nadu, India E-mail: nanoiydro@gmail.com (*Corresponding Author) Abstract: Personal care products (PCPs) are among the most commonly detected compounds in surface water. PCPs have used large amount of metal and metal oxide nanoparticles (NPs). In the present study an attempt was made to study the bioaccumulation and biochemical constituents changes in gill tissues of a freshwater fish labeo rohita exposed to metal and metal oxide nanoparticles in domestic wastewater collected from student hostel. The observed results suggested that the structural conformation of proteins in fish gill tissues was significantly influenced by wastewater exposure when compared to control and the uptake of various NPs in gill tissue was very high. Keywords: Bio accumulation, Nanoparticles, Toxicity, Gill tissues, Metal, Metal oxide, Personal care products, Labeo rohita Introduction PCPs are used extensively by people to maintain their appearance and looks and also to be attractive and gaze younger in all the ages. For this purpose world’s people consume enormous quantities of skin care products, soaps, sunscreen lotions, hair styling products, hair removers, shampoos, conditioners, moisturizers, anti-agers, nail and cuticle care products, oral care including toothpastes, and whiteners (Daughton and Ternes, 1999). Metal and metal oxide NPs are among the most commonly used engineered NPs in cosmetics. Noble metals like gold, platinum, and silver are used as well as oxides of titanium, zinc, cerium, and iron. Some of these engineered metal-based NPs (e.g. aluminum and iron oxide) are used as concealers in foundations. Others (e.g. silver) are used for their antibacterial properties in beauty soaps as well as their claimed ability to remedy pimples and acne. Together with platinum NPs, which International Journal of Science, Environment ISSN 2278-3687 (O) and Technology, Vol. 4, No 6, 2015, 1489 – 1495 2277-663X (P) Received Oct 10, 2015 * Published Dec 2, 2015 * www.ijset.net