ISHS Acta Horticulturae 566: II International Symposium on Application of Modelling as an Innovative Technology in the Agri-Food Chain; MODEL-IT
POTENTIAL OF NEAR INFRARED SPECTROSCOPY FOR NON-DESTRUCTIVE ESTIMATION OF SOLUBLE SOLIDS IN GROWING MELONS |
| Authors: | H. Ito, S. Morimoto, R. Yamauchi |
| Keywords: | Cucumis melo, Brix, a portalbe instrument, intact, harvest time, monitoring |
| Abstract:
Non-destructive determination of soluble solids (○Brix) in harvested fruits using near infrared (hereafter, NIR) spectroscopy has been reported by many researchers. We have just reported on non-destructive estimation of ○Brix in harvested melons using a NIRSystems Model 6500 spectrophotometer (Ito et al., 2000). There is a cultivated variety that is difficult to judge harvest time from external appearance. If we can determine ○Brix in growing fruits non-destructively in the field, immature fruits will not be harvested. A portable NIR spectrophotometer for field use has been just developed by Kubota Corporation. The spectral data of growing melons in a plastic greenhouse were measured by the portable spectrophotometer. A commercial program was used for multiple linear regression analysis. ○Brix in the growing melons could be estimated by a multiple regression equation calibrated with harvested melons. Absorbances of 906 and 874 nm that are key wavelengths for non-destructive ○Brix determination were included in the multiple regression equation as the independent variables. Therefore, it was concluded that ○Brix in growing fruits could be determined non-destructively in the field. | |
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