Increasingly, the public wants to "eat healthy," consuming foods that are high in the nutrients that are considered beneficial. The problem is that many of these food components are ultimately ineffective.
This is so because most bioactive phytochemicals (chemical components derived from plants) are not soluble in water, and therefore their absorption via the digestive system is very limited. In plain terms, the beneficial components simply pass through our bodies.
In order to solve this problem, two Ph.D. students at the Hebrew University of Jerusalem have contributed to the development of "nanovehicles" that can successfully transport the desired components through the digestive system. For their successful work, the two students, Aviram Spernath and Idit Yuli-Amar are first-prize student winners of this year's Kaye Innovation Awards at the Hebrew University, which were presented on June 8 during the 67th meeting of the university's Board of Governors.
Spernath and Yuli-Amar have been working under the supervision of Prof. Nissim Garti and Dr. Abraham Aserin at the Hebrew University's Casali Institute of Applied Chemistry in developing nanodroplets and tiny liquid crystals that are effective in binding with, dissolving, stabilizing and retaining food or medicinal chemicals, thereby creating microemulsions. The vehicles are built using complex formulations involving emulsifiers, water, oil and alcohol.
These nanodroplets or liquid-crystals, each bearing the desired bioactive chemicals, can be incorporated into liquid or solid food, capsules, powders or tablets. The vehicles' retentive qualities and nanostructure enable them to be successfully absorbed through digestive membranes. The method has significant health implications for both better nutrition and medical treatment.
Spernath, 35, who lives in Kfar Saba, and Yuli-Amar, 28, of Jerusalem stress that their specially formulated vehicles can successfully entrap and transport nutrients dissolved in nanodroplets or liquid-crystals that are 95 percent water. The current direction of their research is aimed at developing vehicles that are exclusively water-based, without the need for an alcohol component.
Source: Eurekalert & othersLast reviewed: By John M. Grohol, Psy.D. on 21 Feb 2009
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