Journal
FOOD CHEMISTRY
Volume 173, Issue -, Pages 424-431Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.09.150
Keywords
Sunlight exposure; Ultraviolet (UV) radiation; Pinot noir wine; Wine phenolics; Terpene alcohols; C-13-norisoprenoids
Funding
- China Scholarship Council [2009630125, 2010630200]
Ask authors/readers for more resources
The effect of canopy leaf removal and ultraviolet (UV) on Pinot noir grape and wine composition was investigated in this study. Limited basal leaf removal in the fruit zone was conducted, compared to shaded bunches. The UV exposure was controlled using polycarbonate screens to block UV radiation, and acrylic screens to pass the UV. The results showed that bunch sunlight and UV exposure significantly increased the Brix and pH in the grape juice, and increased substantially wine colour density, anthocyanins, total pigment, total phenolics and tannin content. Bunch sunlight and UV exposure affected terpene alcohols, C-13-norisprenoids and other volatile composition of the wine differently. Sunlight exposure and UV resulted in increase of nerol, geraniol and citronellol but not linalool. Sunlight exposure slightly increased the concentration of beta-ionone, but the increase was not statistically significant for UV treatment. Neither sunlight nor UV treatment showed any impact on the concentration of beta-damascenone. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available