ISHS Acta Horticulturae 368: International Symposium on Postharvest Treatment of Horticultural Crops
DETERMINATION OF APPLE MATURITY BY NIT |
| Authors: | T. Lovász, A. Salgó, P. Merész, P. Sass |
| Keywords: | dry matter, hardness, juice pH, pectin, refraction, titrable acidity |
| Abstract:
The application possibilities of the NIT method were investigated for predicting a few chemical and physical factors. Using six cultivars of apple (Jonnee, Jonagold, Jonathan, Golden Delicious, Gloster and Mutsu) three different picking date (ten days apart) were applied. Calibrations of the dry matter and juice pH were the best (C>0.90, cv %=3–4 %). Hardness, acidity and pectin content had lower values (C=0.85–0.88, cv %=9–10 %). Refraction showed extremely low correlation (C=0.75, cv %=7 %) because of the lack of its reliabte determination. | |
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