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ARS Home » Midwest Area » Peoria, Illinois » National Center for Agricultural Utilization Research » Functional Foods Research » Research » Publications at this Location » Publication #382049

Research Project: Development of Enhanced Bio-Based Products from Low Value Agricultural Co-Products and Wastes

Location: Functional Foods Research

Title: Preparations of gels using cedarwood oil and plant waxes for an insect barrier

item Eller, Fred

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 5/14/2021
Publication Date: 5/14/2021
Citation: Eller, F.J. 2021. Preparations of gels using cedarwood oil and plant waxes for an insect barrier. Annual AOCS Meeting & Expo. Meeting Abstract. Virtual.

Interpretive Summary:

Technical Abstract: The purpose of this study was to develop cedarwood oil (CWO) into a convenient formulation that could be used as a barrier to crawling insects. A variety of oleogelators (e.g., plant waxes, bees wax and tristearin) and structuring agents (e.g., silica gel and cellulose) were tested. Oleogels mixtures were compared by placing a drop of the test mixture on the side of a glass beaker and then exposing the beaker to increasing temperatures starting at 25°C. The temperature at which the test mixture melted and slid down the beaker was recorded. The goal was to resist melting up to a temperature of at least 60°C (i.e., 140°F). Different concentrations of CWO in oleogelators were tested to attain the highest concentration of CWO possible. In general, higher concentrations of the oleogelators led to higher melting points. A CWO mixture containing beeswax did not resist melting as well as a mixture containing tristearin. At concentrations of 10% plant wax (i.e., 90% CWO), rice bran wax and sunflower wax gave gels that melted at the highest temperature, while at 15% plant wax (i.e., 85% CWO), carnauba wax melted at the highest temperature. Cedarwood oil formulated with silica gel resisted melting better than those formulated with cellulose. Some of these plant waxes are suitable for preparing CWO formulations for use as an insect barrier. Field trials are planned to evaluate their effectiveness.