Effect of grape bunch sunlight exposure and UV radiation on phenolics and volatile composition of Vitis vinifera L. cv. Pinot noir wine

Jianqiang Song; Richard Smart; Hua Wang; Robert Dambergs; Angela Sparrow; Michael C. Qian

doi:10.1016/j.foodchem.2014.09.150

Effect of grape bunch sunlight exposure and UV radiation on phenolics and volatile composition of Vitis vinifera L. cv. Pinot noir wine

Jianqiang Song, Richard Smart, Hua Wang, Robert Dambergs, Angela Sparrow, Michael C. Qian

Agricultural, Environmental and Veterinary Sciences

Research output: Contribution to journal › Article › peer-review

108 Citations (Scopus)

Abstract

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, C13-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 β-ionone, but the increase was not statistically significant for UV treatment. Neither sunlight nor UV treatment showed any impact on the concentration of β-damascenone.

Original language	English
Pages (from-to)	424-431
Number of pages	8
Journal	Food Chemistry
Volume	173
Early online date	07 Oct 2014
DOIs	https://doi.org/10.1016/j.foodchem.2014.09.150
Publication status	Published - 15 Apr 2015

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@article{063e1f9094834775984e981c10881b55,

title = "Effect of grape bunch sunlight exposure and UV radiation on phenolics and volatile composition of Vitis vinifera L. cv. Pinot noir wine",

abstract = "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, C13-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 β-ionone, but the increase was not statistically significant for UV treatment. Neither sunlight nor UV treatment showed any impact on the concentration of β-damascenone.",

keywords = "Sunlight exposure, Ultraviolet (UV) radiation, Pinot noir wine, Wine phenolics, Terpene alcohols, C13-norisoprenoids",

author = "Jianqiang Song and Richard Smart and Hua Wang and Robert Dambergs and Angela Sparrow and Qian, {Michael C.}",

note = "Includes bibliographical references",

year = "2015",

month = apr,

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doi = "10.1016/j.foodchem.2014.09.150",

language = "English",

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pages = "424--431",

journal = "Food Chemistry",

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TY - JOUR

T1 - Effect of grape bunch sunlight exposure and UV radiation on phenolics and volatile composition of Vitis vinifera L. cv. Pinot noir wine

AU - Song, Jianqiang

AU - Smart, Richard

AU - Wang, Hua

AU - Dambergs, Robert

AU - Sparrow, Angela

AU - Qian, Michael C.

N1 - Includes bibliographical references

PY - 2015/4/15

Y1 - 2015/4/15

N2 - 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, C13-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 β-ionone, but the increase was not statistically significant for UV treatment. Neither sunlight nor UV treatment showed any impact on the concentration of β-damascenone.

AB - 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, C13-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 β-ionone, but the increase was not statistically significant for UV treatment. Neither sunlight nor UV treatment showed any impact on the concentration of β-damascenone.

KW - Sunlight exposure

KW - Ultraviolet (UV) radiation

KW - Pinot noir wine

KW - Wine phenolics

KW - Terpene alcohols

KW - C13-norisoprenoids

U2 - 10.1016/j.foodchem.2014.09.150

DO - 10.1016/j.foodchem.2014.09.150

M3 - Article

C2 - 25466041

SN - 0308-8146

VL - 173

SP - 424

EP - 431

JO - Food Chemistry

JF - Food Chemistry

ER -

Effect of grape bunch sunlight exposure and UV radiation on phenolics and volatile composition of Vitis vinifera L. cv. Pinot noir wine

Abstract

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