Non-destructive Measurement of Total Carotenoid Content in Processed Tomato Products: Infrared Lock-In Thermography, Near-Infrared Spectroscopy/Chemometrics, and Condensed Phase Laser-Based Photoacoustics-Pilot Study

作者：Bicanic D; Streza M; Doka O^*; Valinger D; Luterotti S; Ajtony Zs; Kurtanjek Z; Dadarlat D

来源：International Journal of Thermophysics, 2015, 36(9): 2380-2388.

DOI：10.1007/s10765-015-1895-2

• Carotenoids
• Infrared lock-in thermography
• Laser photoacoustic spectroscopy
• Near-infrared spectroscopy/chemometrics
• Processed tomato
• Spectrophotometry

Carotenes found in a diversity of fruits and vegetables are among important natural antioxidants. In a study described in this paper, the total carotenoid content (TCC) in seven different products derived from thermally processed tomatoes was determined using laser photoacoustic spectroscopy (LPAS), infrared lock-in thermography (IRLIT), and near-infrared spectroscopy (NIRS) combined with chemometrics. Results were verified versus data obtained by traditional VIS spectrophotometry (SP) that served as a reference technique. Unlike SP, the IRLIT, NIRS, and LPAS require a minimum of sample preparation which enables practically direct quantification of the TCC.

• 出版日期2015-9