Properties, composition, and analysis of grain sorghum wax |
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| Authors: | Keum T Hwang Susan L Cuppett Curtis L Weller Milford A Hanna |
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| Affiliation: | (1) Department of Food Science and Human Nutrition and Institute for Molecular Biology and Genetics, Chonbuk National University, Chonju, 561-756 Chonbuk, Korea;(2) Department of Food Science and Technology, University of Nebraska, 68583-9726 Lincoln, NE;(3) Dept. of Biological Systems Engineering, University of Nebraska, 210 L.W. Chase Hall, 68583-0726 Lincoln, NE;(4) Industrial Agricultural Products Center, University of Nebraska, Lincoln, Nebraska |
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| Abstract: | Grain sorghum wax has been judged to be a potential source of natural wax with properties similar to carnauba wax. Approximately
0.16–0.3% (w/w) wax can be extracted from grain sorghum depending on the efficiency of the organic solvents. Although the
melting points of carnauba wax and sorghum wax are similar, i.e., 78–86 and 77–85°C, respectively, they differ in acid values,
i.e., 2–10 and 10–16, respectively, and saponification numbers, i.e., 77–95 and 16–49, respectively. Improved knowledge of
the properties, composition, and analysis of grain sorghum wax would assist in efforts for industrial application of this
product. Major components of sorghum wax are hydrocarbons, wax esters, aldehydes, free fatty alcohols, and FFA. The hydrocarbons
consist mainly of C27 and C29, and the aldehydes, alcohols, and acids are mainly C28 and C30. The wax esters are mostly esters of C28 and C30 alcohols and acids. |
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| Keywords: | Fatty acid fatty alcohol fatty aldehyde grain sorghum wax hydrocarbon wax ester |
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