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Item Iron content and availability studies in some Sri Lankan rice varieties(International Journal of Food Science and Technology, 2011) Herath, H.M.T.; Rajapakse, H.; Wimalasena, S.; Weerasooriya, M.K.B.Thirty-eight rice varieties, grown in Low Country Wet Zone, during Yala (2006) and Maha (2006 . 2007) seasons were screened for stable high iron rice varieties and were statistically analysed. Iron contents ranged 1.89.3.73 mg 100 g)1 and varied significantly (P < 0.05) with variety and season. Selected fifteen high iron rice varieties, at degree of polishing 8.10% were analysed for iron, zinc and phytate. High iron contents in endosperm were observed in Suduru Samba (0.47 mg 100 g)1), Basmati 370 (0.37 mg 100 g)1), Kalu Heenati (0.42 mg 100 g)1), Rathu Heenati (0.44 mg 100 g)1) and Sudu Heenati (0.37 mg 100 g)1). Phytate contents of polished rice varieties ranged from 200.300 mg 100 g)1. Large reduction in iron content (84.5.93.6%) was observed in polished rice while the reduction in phytate content (18.9.40.8%) was low. Percentage dialyzability of iron in selected endosperm high iron rice varieties ranged from 1.73 to 8.71. Dialysability of iron in cooked polished rice did not show a relation to the phytate content in raw rice.Item Alkaline lipase from rice bran; Purification. Characterization of and evaluation its potential to use as a bio-detergent(Culture, Globalization and the Developing World, 2nd ICSS, 2013) Weerasooriya, M.K.B.; Singharam, I.Removal of fatty nature stain is a major problem in laundry cleaning. Currently fat containing dirts are removed by saponification at high temperature under high alkaline conditions. The method costs energy as well as lower the texture and quality of textile fabrics. Therefore, there is a need of low temperature active alkaline lipases to save the energy and to maintain the quality of fabrics. Novozyme Company in Denmark, and Genecor International, in India currently produce microbial lipases to use in the detergent industry. Though these commercial lipases stable in alkaline pH, 2-3 wash cycles are needed to obtain a significant removal of lipid stain .Cost production of these enzymes are also high. Hence, their industrial use has been limited. Objective of the paper is to study Purification. Characterization of rice bran lipase and evaluation it?s potential to use as a bio-detergent. Lipase was extracted from rice bran partially purified by DEAE Cellulose chromatography. Its pH stability under alkaline conditions, a temperature kinetics and lipolytic activity towards different lipids were studied. Washing performance tests also carried out to test its potential to remove fatty nature stains. Enzyme showed optimum reactivity at 30-40�C optimum stability around pH 8-10. High lipolytic activity toward all the tested lipids eg. Olive, soybean, sun flower, coconut oil, margarine and butter. Washing performance tests also showed stain caused by coconut oil (1.00ml) can be completely removed by treating the fabric with lipase 1mg/ml at 30�C for 15min. Findings showed that rice bran lipase can be used as a potential candidate in bio-detergent industry.Item Isolation of alkaline lipase from rubber seed - Partial purification, characterization and its potential applications as a detergent additive(Indian Journal of Chemical Technology, 2012) Weerasooriya, M.K.B.; Kumarasinghe, A.A.N.