Skip to main content
Advertisement

Main menu

  • Home
  • Content
    • Current Volume
    • AJEV and Catalyst Archive
    • Best Papers
    • ASEV National Conference Technical Abstracts
    • Print on Demand
  • Information For
    • Authors
    • Open Access Publishing
    • AJEV Preprint and AI Software Policy
    • Submission
    • Subscribers
      • Proprietary Rights Notice for AJEV Online
    • Permissions and Reproductions
  • About Us
  • Feedback
  • Alerts
  • Help
  • Login
  • ASEV MEMBER LOGIN

User menu

  • Log in

Search

  • Advanced search
American Journal of Enology and Viticulture
  • Log in
  • Follow ajev on Twitter
  • Follow ajev on Linkedin
American Journal of Enology and Viticulture

Advanced Search

  • Home
  • Content
    • Current Volume
    • AJEV and Catalyst Archive
    • Best Papers
    • ASEV National Conference Technical Abstracts
    • Print on Demand
  • Information For
    • Authors
    • Open Access Publishing
    • AJEV Preprint and AI Software Policy
    • Submission
    • Subscribers
    • Permissions and Reproductions
  • About Us
  • Feedback
  • Alerts
  • Help
  • Login
  • ASEV MEMBER LOGIN
Research Article

Preharvest Prediction of Yeast Assimilable Nitrogen in Finger Lakes Riesling Using Linear and Multivariate Modeling

Mark A. Nisbet, Tim E. Martinson, Anna Katharine Mansfield
Am J Enol Vitic.  2013  64: 485-494  ; DOI: 10.5344/ajev.2013.13030
Mark A. Nisbet
1Graduate Student, Department of Food Science, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Find this author on ADS search
  • Find this author on Agricola
  • Search for this author on this site
Tim E. Martinson
2Senior Extension Associate, Department of Horticulture, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Find this author on ADS search
  • Find this author on Agricola
  • Search for this author on this site
Anna Katharine Mansfield
3Assistant Professor, Department of Food Science, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Find this author on ADS search
  • Find this author on Agricola
  • Search for this author on this site
  • For correspondence: akm87@cornell.edu
  • Article
  • Figures & Data
  • Info & Metrics
  • PDF
Loading

Abstract

A three-year study was conducted to determine if regression models could be developed to predict yeast assimilable nitrogen (YAN) before harvest, using Riesling in the New York Finger Lakes region as a model. Berry samples were taken from 62 commercial Riesling vineyards around the Finger Lakes at veraison, two weeks before harvest, and harvest. Samples were measured for berry weight, Brix, pH, titratable acidity, ammonia, primary amino nitrogen, and yeast assimilable nitrogen (YAN). The average YAN concentration at harvest was 91.8 mg/L, and there were no significant differences in harvest YAN concentration among years. Linear regression models created using preharvest YAN concentrations (p < 0.05) had a cross-validated R2 (Q2) of 70%. Models using only preharvest ammonia had less predictive power (Q2 = 63%) but may allow winemakers more analytical flexibility than those requiring complete YAN measurements. Models created using multiple linear regression provided better predictive power (Q2 = 73.6%). Finally, a multivariate approach using partial least squares regression was used to create models with the highest predictive power (Q2 = 74.2%). The additional analysis required to obtain values for additional prediction variables may limit the practicality of multiple linear regression and partial least squares approaches. Because many winemakers are not able to perform the analyses required to calculate YAN during the busy time of harvest, the development of these regression models as predictive tools may allow winemakers to use preharvest analysis to calculate accurate supplemental nitrogen additions, allowing targeted supplementation and lowering the risk of excessive prophylactic additions.

  • yeast assimilable nitrogen
  • supplementation
  • regression
  • prediction
  • ©2013 by the American Society for Enology and Viticulture
View Full Text

Sign in for ASEV members

ASEV Members, please sign in at ASEV to access the journal online.

Sign in for Institutional and Non-member Subscribers

Log in using your username and password

Forgot your user name or password?

Pay Per Article - You may access this article (from the computer you are currently using) for 2 day for US$10.00

Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.

Forgot your user name or password?

PreviousNext
Back to top

Vol 64 Issue 4

  • Table of Contents
  • Table of Contents (PDF)
  • Index by author
View full PDF
Email Article

Thank you for your interest in spreading the word on AJEV.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Preharvest Prediction of Yeast Assimilable Nitrogen in Finger Lakes Riesling Using Linear and Multivariate Modeling
(Your Name) has forwarded a page to you from AJEV
(Your Name) thought you would like to read this article from the American Journal of Enology and Viticulture.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
You have accessRestricted access
Preharvest Prediction of Yeast Assimilable Nitrogen in Finger Lakes Riesling Using Linear and Multivariate Modeling
Mark A. Nisbet, Tim E. Martinson, Anna Katharine Mansfield
Am J Enol Vitic.  2013  64: 485-494  ; DOI: 10.5344/ajev.2013.13030
Mark A. Nisbet
1Graduate Student, Department of Food Science, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Tim E. Martinson
2Senior Extension Associate, Department of Horticulture, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Anna Katharine Mansfield
3Assistant Professor, Department of Food Science, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: akm87@cornell.edu

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero

Share
You have accessRestricted access
Preharvest Prediction of Yeast Assimilable Nitrogen in Finger Lakes Riesling Using Linear and Multivariate Modeling
Mark A. Nisbet, Tim E. Martinson, Anna Katharine Mansfield
Am J Enol Vitic.  2013  64: 485-494  ; DOI: 10.5344/ajev.2013.13030
Mark A. Nisbet
1Graduate Student, Department of Food Science, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Tim E. Martinson
2Senior Extension Associate, Department of Horticulture, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Anna Katharine Mansfield
3Assistant Professor, Department of Food Science, NYSAES, Cornell University, Geneva, NY 14456.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: akm87@cornell.edu
del.icio.us logo Twitter logo Facebook logo Mendeley logo
  • Tweet Widget
  • Facebook Like
  • Google Plus One
Save to my folders

Jump to section

  • Article
    • Abstract
    • Materials and Methods
    • Results
    • Discussion
    • Conclusions
    • Acknowledgments
    • Literature Cited
  • Figures & Data
  • Info & Metrics
  • PDF

Related Articles

Cited By...

More from this TOC section

  • Diversity of Wild Yeasts During Spontaneous Fermentation of Wines from Local Grape Varieties in Turkey
  • Bioprotective Effect of Pichia kluyveri and Lactiplantibacillus plantarum in Winemaking Conditions
  • Vine Age Affects Vine Performance, Grape and Wine Chemical and Sensory Composition of cv. Zinfandel from California
Show more Research Article

Similar Articles

AJEV Content

  • Current Volume
  • Archive
  • Best Papers
  • ASEV National Conference Technical Abstracts
  • Print on Demand

Information For

  • Authors
  • Open Access Publishing
  • AJEV Preprint and AI Software Policy
  • Submission
  • Subscribers
  • Permissions and Reproductions

Other

  • Home
  • About Us
  • Feedback
  • Help
  • Alerts
  • ASEV
asev.org

© 2025 American Society for Enology and Viticulture.  ISSN 0002-9254.

Powered by HighWire