ArticleFoods (Basel, Switzerland)2026
Identification of Two Dielectric Relaxations in Oleic-Rich Oils Within the 50-900 MHz Range Using a Low-Cost Method.
Article in Foods (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The dielectric spectrum of vegetable oils has been widely used to explore relationships with their physicochemical quality parameters. A Cole-Cole relaxation with a characteristic frequency around 200-300 MHz is commonly reported at 25 °C. More recently, the efficient heating of vegetable oils at 2450 MHz has been attributed to the relaxation of a glycerol component (10% by weight) in the triglycerides of vegetable oils. This study presents a method to identify more than one relaxation process using a NanoVNA directly connected to a 5-pin open-ended coaxial probe. The reflection coefficient S
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