The glucose - fructose ratio of California grapes

Authors

  • M. A. Amerine Department of Viticulture and Enology, University of California, Davis, California
  • G. Thoukis Department of Viticulture and Enology, University of California, Davis, California

DOI:

https://doi.org/10.5073/vitis.1958.1.224-229

Abstract

  1. Because of the high sweetness of fructose table grape varieties of high fructose content would be of interest for cold climates. For producing stable sweet table wines with ordinary yeasts high fructose varieties would be desirable. With the Sauternes strain of yeast high glucose varieties would be favored.
  2. The LOTHROP-HOLMES method gave good recovery of added glucose, duplicable results, and minor interference of fructose.
  3. The glucose/fructose ratio of California grapes at maturity varies over a wide range, from at least 0.80 to 1.12. There is, however, considerable variability in the ratio between different vines.
  4. Further data should be obtained for a large number of varieties in order to discover as wide a range of ratios as possible. Plant breeders could then use this information in their experiments.

Downloads

Published

2017-02-22

Issue

Vol. 1 No. 4 (1958): Vitis

Section

Article

License

The content of VITIS is published under a Creative Commons Attribution 4.0 license. Any user is free to share and adapt (remix, transform, build upon) the content as long as the original publication is attributed (authors, title, year, journal, issue, pages) and any changes to the original are clearly labeled. We do not prohibit or charge a fee for reuse of published content. The use of general descriptive names, trade names, trademarks, and so forth in any publication herein, even if not specifically indicated, does not imply that these names are not protected by the relevant laws and regulations. The submitting author agrees to these terms on behalf of all co-authors when submitting a manuscript. Please be aware that this license cannot be revoked. All authors retain the copyright on their work and are able to enter into separate, additional contractual arrangements.