As it is high in value, extra virgin olive oil (EVOO) is frequently blended with inferior vegetable oils. This study presents an optical method for determining the adulteration level of EVOO with soybean oil as well as peanut oil using LED-induced fluorescence spectroscopy. Eight LEDs with central wavelengths from ultra-violet (UV) to blue are tested to induce the fluorescence spectra of EVOO, peanut oil, and soybean oil, and the UV LED of 372 nm is selected for further detection.
View Article and Find Full Text PDFThe consumption of spicy food in daily diets have been found to be inversely associated with human mortality. However, whether intake of spices is the reason for reduced mortality, and whether capsaicin, the main bioactive component of spices, plays a major role, remain elusive. Here, we report that low concentration of capsaicin can indeed extend life span.
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