Vis/NIRS technique could provide an accurate, reliable and nondestructive method for assessing the internal quality indices in mandarin

The development of sensors to measure fruit internal quality variables is one of the? challenges of post?harvest technology. Visible?near infrared spectroscopy (Vis/NIRS)? has been a promise technique for nondestructive fruit quality assessment. This study? was focused to evaluate the use of Vis/NIRS in measuring the quality parameters of? intact? mandarin? orange? fruit? (Citrus? clementina).? The? parameters? studied? were:? firmness, color (CIE Lab), peel thickness, soluble solids content (SSC), pH and total? acidity (TA).? A total of 120 mandarin fruit with different maturation were sampled. Reflectance NIR? spectra were collected in four points of each fruit and the fruits were posteriorly? analyzed for the physico?chemical parameters.?? Prediction models were selected based on the highest r2, lowest standard error of? calibration (RMSEC) and lower number of factors used in the calculation. For color? parameters (L*, a* and b*) model had a mean square error of calibration (RMSEC) of? 0.877, 1.780 and 1.589 and coef?cient determination (r2) of 0.923, 0.963 and 0.852, respectively. The proposed model for the SSC had a RMSEC of 0.314 and r2 of 0.749.? The results indicate that Vis/NIRS technique could provide an accurate, reliable and? nondestructive method for assessing the internal quality indices. SourcesNon?destructive?measurement?of?mandarin?orange?quality?parameters? with?Visible??Near?Infrared?Spectroscopy? ? L.?Paulo,?M.?Resende,?A.?Nunes,?C.?Miguel?Pintado,?P.?Antunes ? CATAA???Associa??o?Centro?de?Apoio?Tecnol?gico?Agro?Alimentar?de?Castelo?Branco, Zona?Industrial?de?Castelo?Branco,?Rua?A,?6000?459?Castelo?Branco,?Portugal.?? XIV?Congreso?Nacional?de?Ciencias?Hort?colas; Orihuela,?Espa?a, 3-5?de?junio?de?2015Picture by oahufresh.com