Resumen

RIBERA-FONSECA, A; NOFERINI, M  y  ROMBOLA, A.D. Non-destructive Assessment of Highbush Blueberry Fruit Maturity Parameters and Anthocyanins by Using a Visible/Near Infrared (vis/NIR) Spectroscopy Device: A Preliminary Approach. J. Soil Sci. Plant Nutr. [online]. 2016, vol.16, n.1, pp.174-186.  Epub 18-Ene-2016. ISSN 0718-9516.  http://dx.doi.org/10.4067/S0718-95162016005000014.

We evaluate the use of a portable and non-invasive technology based on visible and near infrared (vis/NIR) spectroscopy (Cherry-Meter) for monitoring fruit maturity parameters and anthocyanins in two highbush blueberry (Vaccinium corymbosum L.) cultivars (Misty and Sharpblue). This device measures an Index of Absorbance Difference (I_AD), which showed high correlations with fruit quality parameters in other fruit crops. We found positive but differential correlations between I_AD values and fruit anthocyanins, which was higher for Misty (r = 0.970, p≤0.01) than for Sharpblue (r = 0.714, p>0.05). Interestingly, Cherry-Meter measurements were also correlated with solid soluble concentrations (r = 0.685, p≤0.01) and fruit firmness (r = -0.714, p≤0.01), but only in Sharpblue. For both cultivars, I_AD values were also significantly (p≤0.01) related with fruit FW (0.447 for Sharpblue and 0.559 for Misty). The High Performance Liquid Chromatography (HPLC) data indicated that I_AD variations were associated with significant changes in single berry anthocyanidins levels. These findings are the first approach, highlighting the potentialities of Cherry-Meter for the non-destructive assessment of fruit maturity and anthocyanidin profile in blueberries.

Palabras clave : Anthocyanins; blueberry; Harvest; Non-destructive; vis/NIR spectrometry.

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