User profiles for Mark O. Downey

Mark O. Downey

Verified email at thebicycleemporium.com.au
Cited by 5402

Cultural practice and environmental impacts on the flavonoid composition of grapes and wine: a review of recent research

MO Downey, NK Dokoozlian… - American Journal of …, 2006 - Am Soc Enol Viticulture
Flavonoids are a large and diverse group of compounds that, by their presence or absence,
contribute greatly to wine quality. While the flavonoid content and composition of a wine …

The effect of bunch shading on berry development and flavonoid accumulation in Shiraz grapes

MO Downey, JS Harvey… - Australian journal of …, 2004 - Wiley Online Library
Opaque boxes were applied to bunches of Shiraz grapes prior to flowering to determine the
effect of sunlight on berry development and accumulation of flavonoids. The boxes were …

Proanthocyanidin synthesis and expression of genes encoding leucoanthocyanidin reductase and anthocyanidin reductase in developing grape berries and …

J Bogs, MO Downey, JS Harvey, AR Ashton… - Plant …, 2005 - academic.oup.com
Proanthocyanidins (PAs), also called condensed tannins, can protect plants against herbivores
and are important quality components of many fruits. Two enzymes, leucoanthocyanidin …

Analysis of tannins in seeds and skins of Shiraz grapes throughout berry development

MO Downey, JS Harvey… - Australian Journal of …, 2003 - Wiley Online Library
The flavan‐3‐ol and proanthocyanidin composition of both seeds and skin of Vitis vinifera L.
cv. Shiraz grapes was determined by reversed‐phase HPLC after acetone extraction and …

Synthesis of flavonols and expression of flavonol synthase genes in the developing grape berries of Shiraz and Chardonnay (Vitis vinifera L.)

MO Downey, JS Harvey… - Australian Journal of …, 2003 - Wiley Online Library
Flavonols were determined in Shiraz and Chardonnay grapes throughout berry development.
The predominant flavonols were quercetin‐3‐glycosides with trace amounts of kaempferol…

Exclusion of sunlight from Shiraz grapes alters wine colour, tannin and sensory properties

R Ristic, MO Downey, PG Iland… - Australian Journal of …, 2007 - Wiley Online Library
The aim of this study was to determine how changes in grape composition brought about by
artificial shading (sunlight exclusion) influence wine properties including colour, flavonoid …

Condensed tannin and grape cell wall interactions and their impact on tannin extractability into wine

…, JF Harbertson, MO Downey - Australian Journal of …, 2010 - Wiley Online Library
It has been suggested that tannin extraction from grape berries into wine is limited by tannin
binding to cell walls. Here we review the current state of knowledge and identify gaps in …

Simultaneous separation by reversed-phase high-performance liquid chromatography and mass spectral identification of anthocyanins and flavonols in Shiraz grape …

MO Downey, S Rochfort - Journal of Chromatography A, 2008 - Elsevier
A limitation of large-scale viticultural trials is the time and cost of comprehensive compositional
analysis of the fruit by high-performance liquid chromatography (HPLC). In addition, …

Impact of exogenous tannin additions on wine chemistry and wine sensory character

…, GP Parpinello, H Heymann, MO Downey - Food Chemistry, 2012 - Elsevier
Tannins are an important part of wine quality and are frequently added during winemaking.
Tannin additives and their impact on wine are poorly documented. This work sought to …

Impact of condensed tannin size as individual and mixed polymers on bovine serum albumin precipitation

JF Harbertson, RL Kilmister, MA Kelm, MO Downey - Food chemistry, 2014 - Elsevier
Condensed tannins composed of epicatechin from monomer to octamer were isolated from
cacao (Theobroma cacao, L.) seeds and added to bovine serum albumin (BSA) individually …