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You searched for subject:(Pinot gris wine). One record found.

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Lincoln University

1. Townshend, Emily. Investigating the phenolic composition of orange wines: studying the effects of oxidation and skin contact on white wine tannin.

Degree: 2018, Lincoln University

An in-depth analysis of orange wines was conducted to assess factors affecting the phenolic composition. Orange wines were produced from Pinot Gris juice and table grape skins from September 2017 to March 2018. Factors included in this experiment were different ratios of skin contact to juice, additions of sulfur dioxide and aging. Basic wine data was analysed along with methylcellulose precipitable tannin, fractionation by solid-phase extraction and mean degree of polymerisation via acid catalysis in the presence of excess phloroglucinol. Increasing rates of skin addition resulted in a higher tannin composition in wine, along with an increase in pH and a decrease in TA and alcohol percentage. The use of SO2 limited tannin development, mean degree of polymerisation and affected the proportions observed in fractions two and three, but protected total phenolics from oxidation over time, especially those present in fraction one. The use of SO2 also resulted in orange wines with a lesser degree of browning. Orange wine phenolics develop in a similar way to red wine phenolics and are affected by similar winemaking conditions, however further study is required to confirm results. Advisors/Committee Members: Harrison, Roland, Tian, Bin.

Subjects/Keywords: orange wine; phenolics; tannin; fractionation; colour; oxidation; skin contact; solid-phase extraction; Pinot gris wine; mean degree of polymerisation (mDP); maceration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Townshend, E. (2018). Investigating the phenolic composition of orange wines: studying the effects of oxidation and skin contact on white wine tannin. (Thesis). Lincoln University. Retrieved from http://hdl.handle.net/10182/10384

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Townshend, Emily. “Investigating the phenolic composition of orange wines: studying the effects of oxidation and skin contact on white wine tannin.” 2018. Thesis, Lincoln University. Accessed July 22, 2019. http://hdl.handle.net/10182/10384.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Townshend, Emily. “Investigating the phenolic composition of orange wines: studying the effects of oxidation and skin contact on white wine tannin.” 2018. Web. 22 Jul 2019.

Vancouver:

Townshend E. Investigating the phenolic composition of orange wines: studying the effects of oxidation and skin contact on white wine tannin. [Internet] [Thesis]. Lincoln University; 2018. [cited 2019 Jul 22]. Available from: http://hdl.handle.net/10182/10384.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Townshend E. Investigating the phenolic composition of orange wines: studying the effects of oxidation and skin contact on white wine tannin. [Thesis]. Lincoln University; 2018. Available from: http://hdl.handle.net/10182/10384

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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