The Resource Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation, by Nicole Elizabeth Doerr

Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation, by Nicole Elizabeth Doerr

Label
Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation
Title
Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation
Statement of responsibility
by Nicole Elizabeth Doerr
Creator
Contributor
Author
Thesis advisor
Subject
Genre
Language
eng
Summary
Norton is an important grape cultivar that is native to Missouri and grown widely because of disease resistance and wine quality. Wine quality is related to levels of flavonoids, and vineyard practices influence flavonoid accumulations. However, little research has examined accumulation of flavonoids in Norton fruit over the growing season. A two-year (2012-2013) study was initiated using Norton and Cabernet Sauvignon vines at Mountain Grove, MO, and a one year study in (2013) using Norton vines at Rocheport, MO. Cabernet Sauvignon, a well-studied grape cultivar was monitored for flavonoid accumulation as a comparison to Norton. Berry samples were collected at six stages of maturation from green berries at 43 days after flowering (DAF) to harvest (125 DAF). Levels of sugars, acids, and flavonoids such as anthocyanins, tannins, and total phenolics were estimated from berry skins at each harvest date. Compared to Cabernet Sauvignon, Norton had 15% higher sugars, 9% higher acids, 72% higher anthocyanins, 40% lower tannins, and 9% lower total phenolics averaged over six stages. High levels of anthocyanins in Norton would contribute to higher quality wine based on color. However, lower tannin levels will result in a less astringent wine; tannins are added during fermentation to adjust astringency. Lower total phenolic content can decrease the stability of wine limiting storage. Documentation of Norton berry flavonoid content will allow future research to determine how vineyard practices can alter the concentration of flavonoids during berry development
Cataloging source
MUU
http://library.link/vocab/creatorName
Doerr, Nicole Elizabeth
Degree
M.S.
Dissertation note
Thesis
Dissertation year
2014.
Government publication
government publication of a state province territory dependency etc
Granting institution
University of Missouri--Columbia
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorDate
1960-
http://library.link/vocab/relatedWorkOrContributorName
Smeda, R. J.
http://library.link/vocab/subjectName
  • Grapes
  • Tannins
  • Cabernet (Wine)
Label
Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation, by Nicole Elizabeth Doerr
Instantiates
Publication
Note
  • "May 2014."
  • "A Thesis Presented to the Faculty of the Graduate School at the University of Missouri In Partial Fulfillment of the Requirements for the Degree Master of Science."
  • Thesis supervisor: Dr. Reid Smeda
Accompanying material
2 supplementary files.
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
917629785
Extent
1 online resource (xi, 100 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
  • c
Other physical details
illustrations (some color) +
Specific material designation
remote
System control number
(OCoLC)917629785
Label
Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation, by Nicole Elizabeth Doerr
Publication
Note
  • "May 2014."
  • "A Thesis Presented to the Faculty of the Graduate School at the University of Missouri In Partial Fulfillment of the Requirements for the Degree Master of Science."
  • Thesis supervisor: Dr. Reid Smeda
Accompanying material
2 supplementary files.
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier.
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent.
Control code
917629785
Extent
1 online resource (xi, 100 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
  • c
Other physical details
illustrations (some color) +
Specific material designation
remote
System control number
(OCoLC)917629785

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