88 research outputs found
Abscisic acid and ethephon treatments applied to ‘Verdejo’ white grapes affect the quality of wine in different ways
<div><p>ABSTRACT: Exogenous ethephon and abscisic acid (ABA) treatments are used worldwide to improve the coloring of red table grapes, but there is little information about their impact on the quality of white grapes and wines. The aim of this work was to evaluate the effects of exogenous ethephon and ABA applications at veraison on the composition of ‘Verdejo’ white grapes, and on the quality of their wines. To attain this objective, a field trial was carried out in a ‘Verdejo’/110 Richter vineyard located in north-central Spain. Two levels of ethephon (0 and 1500 mg L−1) and ABA (0 and 800 mg L−1) were sprayed on clusters at veraison, in a factorial design for three consecutive seasons. Ethephon and ABA had additive effects, decreasing titratable acidity and increasing pH of the must, which could be exploited by accelerating the grape ripening process in cold-climate zones. Nevertheless, each growth regulator affected the composition and sensory analysis of the wines differently. Ethephon treatments produced wines with lower concentration of acids and better flavor quality than those made from untreated plants, while wines with ABA applications tended to have a higher ethanol concentration and poorer aroma quality than controls. The wines submitted to treatments with ethephon obtained the best overall evaluation in the sensory analysis throughout the trial.</p></div
Frequency of main bacterial genus, groups and species detected in faecal samples by qRTi-PCR.
<p>Bacterial DNA expressed as log genome equivalents/Ml.</p><p>n =  number of samples where the bacterial group was isolated.</p
Frequency of main bacterial genus, groups and species isolated in breast milk samples by culture and qRTi-PCR.
1<p>Data are expressed as log<sub>10</sub> colony-forming units/mL;<sup>2</sup>Bacterial DNA expressed as log genome equivalents/mL; ND: Not determined.</p
Frequency of main bacterial species isolated in breast milk samples by culture medium and presence of HIV RNA.
<p>*Fisher Exact Test.</p
Mean bacterial DNA detected in faecal samples by type of infant breastfeeding.
<p>*T Student test.</p
Characteristics of study participants (n = 121).
<p>Values are number n (%) unless indicated otherwise</p>*<p>Mid-Upper Arm Circumference</p
Mean bacterial DNA detected in faecal samples by infant lactation period.
<p>*Analysis of Variance (ANOVA).</p
Isolation of bacterial groups and RNA HIV in breast milk by lactation period.
*<p>Fisher exact test p<0.05.</p><p>n = number of samples where the bacterial group or HIV RNA was detected.</p
Baseline characteristics at enrolment of study participants (N = 113).
<p>Baseline characteristics at enrolment of study participants (N = 113).</p
Reasons for non-participation in rounds 2 and 3 of interviews (n = 64).
<p>Reasons for non-participation in rounds 2 and 3 of interviews (n = 64).</p
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