| Literature DB >> 25466040 |
Hui Feng1, Fang Yuan1, Patricia A Skinkis2, Michael C Qian3.
Abstract
The influence of cluster-zone leaf removal on Pinot noir vine growth and fruit chemical and volatile composition was investigated in 3 years. Different severities of leaf removal (0%, 50%, 100%) were imposed during the pea-size stage of development from the cluster zone. Results show that cluster-zone leaf removal had little influence on vine growth, crop load, or grape maturity in terms of total soluble solids (TSS), pH or titratable acidity (TA) at harvest. However, 100% leaf removal resulted in higher concentrations of quercetin glycoside in grapes compared to 0% leaf removal. The 100% leaf removal also increased concentrations of petunidin- and malvidin-3-monoglucoside anthocyanins in two out of 3 years (2010 and 2012) by an average of 62% and 53%, respectively. In addition, 100% leaf removal resulted in higher concentrations of β-damascenone, and some bound-form terpenoids. The increases in β-damascenone were positively correlated to the increased sunlight exposure.Entities:
Keywords: Cluster-zone leaf removal; Phenolics; Pinot noir grape; SBSE–GC–MS; Sunlight exposure; Volatile compounds; β-Damascenone
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Year: 2014 PMID： 25466040 DOI： 10.1016/j.foodchem.2014.09.149
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514