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Blueberry juices produced in China and in Italy were analyzed by means of Raman spectroscopy. The reference data of important nutraceutical indicators such as degrees Brix and carbohydrates were available. Some juices were produced from fresh organic fruits, while others were industrial grade, differing in qualities and prices. Raman spectra obtained with excitation at 1064 nm were acquired using...
The non-destructive nature of spectroscopy as a modern analytical method for food analysis is particularly attractive for rapid quality checks. This paper shows how Raman spectroscopy can be used for assessing the nutraceutic properties of lyophilized blueberries which were selected at different ripeness. The Raman spectra of powder samples were processed together with their reference data by means...
A selection of top-quality extra virgin olive oils with excellent nutraceutic properties was artificially adulterated by means of lower-grade olive oils commonly used in commercial counterfeits. The oil sample set was analyzed by means of diffuse-light absorption spectroscopy performed in the wide 400-1700 nm spectral range. A setup based on optical fiber technology was experimented, which made use...
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