A Quantitative Analytical Chemistry Research-based Experiment Involving Comparative Analysis of Amaranth Grain Oils Extracted from Embu and Meru Districts in Kenya

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dc.contributor.authorWanjau, R. N.
dc.contributor.authorRugutt, J. K.
dc.contributor.authorOkoth, K. O.
dc.contributor.authorGikonyo, Nicholas K.
dc.contributor.authorMachocho, Alex K.
dc.contributor.authorRugutt, K. J.
dc.contributor.authorObel, M. C.
dc.contributor.authorMibei, E.
dc.date.accessioned2014-06-27T08:38:56Z
dc.date.available2014-06-27T08:38:56Z
dc.date.issued2014
dc.descriptionDOI 10.1007/s00897132536aen_US
dc.description.abstractAmaranthus cruentus grains from Meru and Nyeri regions in Kenya were milled and oil extracted by the Bligh and Dyer method. Samples of oil from grains in the same regions extracted by cold pressing method were obtained from All Grain Company in Nairobi. Triacylglycerides (TAG) was the major component of neutral lipids in oil extracted by the two methods. In Dyer and Bligh method, TAG had a mean of 76.12% while cold pressed oil had 72.09%. Phosphatidylethanolamine (PE) was the major polar lipids component in both methods of extraction. In both methods of oil extraction, linoleic acid was the most abundant fatty acid. Other fatty acids that were also found to be present in high amounts in the two methods included: oleic acid (30–34%), palmitic acid (20–23%), stearic acid (2–3%) and linolenic acid (0.8–1.2%). There was no significant difference in the saponification, acid, peroxide and iodine values. The saponification values were quite high, 187.61–189.90. The peroxide values from both methods ranged from 3.10 to 3.17 while acid values from the same analysis ranged between 1.74 and 3.92. Iodine value was found to be between 77.02 in cold pressed oil to 78.77 in oil from Dyer and Bligh method.en_US
dc.identifier.citationThe Chemical Educator Volume 19 (2014) pp 091-095en_US
dc.identifier.issn1430-4171
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/10177
dc.language.isoenen_US
dc.subjectIn the Classroomen_US
dc.subjectanalytical chemistryen_US
dc.subjectAmaranthusen_US
dc.subjectoilen_US
dc.subjectfatty acidsen_US
dc.titleA Quantitative Analytical Chemistry Research-based Experiment Involving Comparative Analysis of Amaranth Grain Oils Extracted from Embu and Meru Districts in Kenyaen_US
dc.typeArticleen_US
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