Abstract
Chili peppers are an important part of the Mexican diet. Till today they are integrated in the cultural traditions inherited froem pre-Columbian ancestors. In any case, scientific studies about all the varieties of chili peppers are not yet finished by far. In this work, we used photoacoustic spectroscopy to specifically characterize Capsicum annuum L. variety pasilla in three different stages: green, red and dried. Metabolic changes occurring in the samples during ripening and drying were monitored by measuring their optical properties using the photoacoustic technique. Several processes, such as water stress, occur during ripening and dehydration to promote the biosynthesis of new compounds; i.e. carotenoids, which are clearly visible in the absorption spectra. To obtain information on the other physical parameters involved, we also measured the moisture content of these peppers and the permeability of their cuticles beginning from the unripe stage until ripening and dehydration.
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Acknowledgments
This work was partially supported by CONACYT-México, the LPI-13 project and the SIP-IPN project No. 20151273. The authors also thank the technical assistance of Esther Ayala and Elizabeth Díaz Torres.
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The authors declare that they have no conflict of interest.
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Barrientos-Sotelo, V.R., Cano-Casas, R., Cruz-Orea, A. et al. Photoacoustic Characterization of Green, Red and Dehydrated Capsicum annuum L. variety Pasilla . Food Biophysics 10, 481–486 (2015). https://doi.org/10.1007/s11483-015-9415-2
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DOI: https://doi.org/10.1007/s11483-015-9415-2