Extraction of Crude Coconut Oil from Industrial Coconut Waste and Determination of its Physico-Chemical and Antimicrobial Properties

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dc.contributor.author Karunarathne, U.H.D.A.
dc.date.accessioned 2021-10-26T08:13:08Z
dc.date.available 2021-10-26T08:13:08Z
dc.date.issued 2014
dc.identifier.other UWU/PLT/14/0022
dc.identifier.uri http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/7385/PLT%2014%20022-24022021122643.pdf?sequence=1&isAllowed=y
dc.description.abstract Coconut oil is one of the highly beneficial natural oil with many of the hidden medicinal values. High amount of low-fat coconut residue and sludge water is removed from coconut processing industry without any use. This study was conducted to extract oil from coconut residue and sludge water in order to compare the properties of extracted oil. Oil was extracted from 10 L of industrial sludge water by density separation. Low fat coconut residue was taken and oil was extracted using solvent extraction technique. N-hexane and Di-ethyl ether were two solvents used. Coconut residue (5 g) was taken and both solvents were added separately 1:1, 1:2, 1:3, 1:4 ratios and kept in water bath for 04 different time intervals (2, 4, 6, 12 h) at 37 °C. Later, the solvent was separated from the residue and kept in oven at 40 °C to remove the solvent and the oil was obtained. The physicochemical parameters were determined by standard methods using commercial coconut as control. According to the statistical results, there was a significant difference between the yields of two solvents (p<0.05) with the best yield of for N-hexane in 1:4 ratio with 4 h retention time (20.14%), whereas yield obtained from sludge was 5.00%. Proximate analysis shown that the fat content in residual coconut was 28.33% ± 0.38. According to the chemical analysis, peroxide (mg peroxide kg-1), acid values and moisture content were 2.85 + 0.09, 1.39 + 0.01, 1.26 + 0.09, 1.59 + 0.01 and 1.36 + 0.03, 0.097 + 0.00, 0.099 + 0.00, 42.2 ± 1.29, and 1.23% + 0.00, 0.99% + 0.00, 1.49% ± 0.01, 9.25% ± 0.02 for commercial oil, hexane, ether extracted oils and sludge oil respectively. The TBARS results showed that oil extracted using hexane have less oxidation than control (P<0.05). This study concludes that low fat residue and sludge water is no longer wastage and it contains significant amount of oil with good chemical properties. However further studies need to check the composition in the extracted oils. Keywords: Low fat, Sludge, Extraction, Chemical properties en_US
dc.language.iso en en_US
dc.publisher Uva Wellassa University of Sri Lanka en_US
dc.relation.ispartofseries ;UWU/PLT/14/0022
dc.subject Palm and Latex Technology and Value Addition Degree Programme ( PLT) en_US
dc.title Extraction of Crude Coconut Oil from Industrial Coconut Waste and Determination of its Physico-Chemical and Antimicrobial Properties en_US
dc.title.alternative Research Article – PLT 2014 en_US
dc.type Thesis en_US

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