italianoenglishfrançaisdeutschespañolportuguês
Language
Search
  • » Vine Pathology
  • » DETECTION OF POWDERY MILDEW IN GRAPES USING A DNA ASSAY AND NEAR INFRARED REFLECTANCE SPECTROSCOPY, AND ASSESSMENT OF CHARDONNAY WINE QUALITY
  • Vicente Ferreira , LAAE, Universidad de Zaragoza
    VIDEO SEMINAR ENOFORUM 2018: 70% of commercial wines contain, without it being evident, the aromas that will cause their aromatic degradation when free SO2 level decreases. Essentially there are tw...
    Price:15 €(Tax included)
    Published on: 17/01/2019

DETECTION OF POWDERY MILDEW IN GRAPES USING A DNA ASSAY AND NEAR INFRARED REFLECTANCE SPECTROSCOPY, AND ASSESSMENT OF CHARDONNAY WINE QUALITY

B.E. STUMMER, R.G. DAMBERGS, I.L. FRANCIS, T. ZANKER, E.S. SCOTT

The E. necator-specific DNA clone detected the pathogen in grapes, must and juice. Compared with visual assessment, the E. necator-specific DNA probe provides a reliable and objective means of detecting and quantifying powdery mildew in grapes, juice and must. The detection threshold is approximately 100 conidia. NIR could discriminate the least infection category from uninfected samples, but these samples were from a small number of trial plots. To ensure a robust calibration, further material representing more diversity must be scanned. Even small amounts of powdery mildew, as little as 1-5% of the bunch infected, resulted in increased oily, viscous mouth-feel characters. The detection tools described here offer the grape industry a means of obtaining objective, quantitative data on disease severity in grapes, must and juice samples at the winery, particularly when disease is slight and visual assessment is difficult. Such information can then be used to inform decisions about the use of grapes and must to achieve desired outcomes.
Published on 25/02/2008
Related sheets
© All Right Reserved
ISSN 1826-1590 VAT: IT01286830334
powered by Infonet Srl Piacenza
Privacy Policy
This website and its related third-party services make use of cookies necessary for the purposes described in the cookie policy. If you want to learn more about cookies or how to disable them (either totally or partially), please see the cookie policy. By closing this banner, scrolling through this page, clicking on a link or continuing navigation in any other way, you consent to the use of cookies.
More informationOK

- A +
ExecTime : 1,875