Blueberry juices: a rapid multi-analysis of quality indicators by means of dispersive Raman spectroscopy excited at 1064 nm

L. Ciaccheri; T. Yuan; S. Zhang; A. A. Mencaglia; C. Trono; L. Yuan; A. G. Mignani

doi:10.1117/12.2264608

23 April 2017 Blueberry juices: a rapid multi-analysis of quality indicators by means of dispersive Raman spectroscopy excited at 1064 nm

L. Ciaccheri, T. Yuan, S. Zhang, A. A. Mencaglia, C. Trono, L. Yuan, A. G. Mignani

Author Affiliations +

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032332 (2017) https://doi.org/10.1117/12.2264608
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

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 a dispersive fiber-optic spectrometer. Degrees Brix were measured by means of a commercial refractometer, while carbohydrate contents were available from the producers. Multivariate processing was used for predicting Brix and carbohydrates from Raman spectra and from the reference data. Determination coefficients equal to 0.88 and 0.84, respectively, were obtained. This experiment further confirms the excellent potentials of Raman spectroscopy for both non-destructive and rapid assessments of food quality.

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L. Ciaccheri, T. Yuan, S. Zhang, A. A. Mencaglia, C. Trono, L. Yuan, and A. G. Mignani "Blueberry juices: a rapid multi-analysis of quality indicators by means of dispersive Raman spectroscopy excited at 1064 nm", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032332 (23 April 2017); https://doi.org/10.1117/12.2264608

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