A chemical method for the assessment of grapes according to their seed content
DOI:
https://doi.org/10.5073/vitis.1983.22.306-310Abstract
Polyphenolic compounds, which are unevenly distributed between seed, pulp and skin, are the basis of a chemical method for the assessment of seedlessness in grapes.
Known seedless and seeded grapes were evaluated using this method and a statistic test showed a significant difference between them. The color of the grapes did not interfere with this method. Frozen storage of samples at -20 °C for 3 months did not alter the results of the test. Hybrids of known progenies which were evaluated gave results which generally agree with those of the taste test.
This chemical method, compared to assessment by taste, is more reliable, quantitative and relatively easy to perform.
Une méthode chimique pour la détermination des raisins selon leur teneur en pépins
Une analyse chimique pour la détermination de l'absence de grains de raisins est décrite. La méthode est basée sur la détermination colorimétrique de composés phénoliques dans les raisins.
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