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Rice bran, which is one of the major by products of paddy contain high quality proteins and edible oil apart from fibre, ash and NFE (nitrogen free extract). The existing solvent extraction method employs n-hexane as the most viable solvent for the extraction of oil from rice bran. But the high cost and scarce availability of n-hexane resulted in uneconomical extraction of rice bran oil. In this study, rice bran was ohmically heated for different time periods(1, 2 and 3 min) with different current values (5, 15 and 20 A) and with different concentration of sodium chloride (1 M, 0.1 M and 0.01 M) as conducting medium. The ohmically heated rice bran was subjected to extraction studies. Ohmic heating of rice bran of paddy varieties Red Triveni and Basmati reduced the extraction time by nearly 75 % and 70 % respectively and gave a maximum quantity of oil extracted when compared to bran, which was not ohmically heated. From the experiments with varying concentrations, residence time of ohmic heating and currents, it was found that ohmically heating the rice bran with 1 M sodium chloride solution and with a current value of 20 A for 3 min gave maximum oil extraction with minimum extraction time.

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A study was carried out to produce chocolates from coconut variants viz, coconut oil, coconut cream and coconut milk as a substitute for cocoa butter. The chocolate prepared with 40% cocoa butter was taken as control. The preliminary trials were conducted with different composition of ingredients for the optimization of the level of substitution of coconut variants. Cocoa butter substituted at the levels of 10 %, 20 % and 30 % by coconut oil, coconut cream and coconut milk respectively were optimized based on the consumer acceptance. The raw materials used in the fabrication of chocolate were subjected to analysed for Peroxide value (PV), Acid Value (AV) and Free Fatty Acid (FFA) content and were found to have desirable oxidative stability.