Grape pulp, also known as grape pomace, after wine-making, can be utilized as fertilizer, animal feed, and even piquette (“second wine”), among other uses. It is also possible to extract nutrients from grape pomace and use them as supplements for health benefits. Found in high amounts in red grapes, one such nutrient, resveratrol, has shown cardioprotective effects as an antioxidant, anti-carcinogenic, and anti-inflammatory agent. Here, we characterized resveratrol in grape pomace. Resveratrol was identified with reflectance
spectroscopy. The developed method, which uses fiber optic-based instrumentation, could be used to rapidly assess resveratrol in grape pomace. This could help supply managers make decisions about the end-use of the pomace. It could be beneficial to extract resveratrol from grape pomace and use it as supplements instead of disposing the pomace as food waste. However, a challenge could remain in the potential efficient upscaling of the resveratrol.