Constanze Burak

Effects of a quercetin-rich onion skin extract on 24 h ambulatory blood pressure and endothelial function in overweight-to-obese patients with (pre-)hypertension: a randomised double-blinded placebo-controlled cross-over trial

Verena Brüll, Constanze Burak, Birgit Stoffel‐Wagner et al. · British Journal Of Nutrition · 2015 · 231 citations · Full text

Medicine, Nutritional Sciences, Pharmacology +17

Higher plasma quercetin levels following oral administration of an onion skin extract compared with pure quercetin dihydrate in humans

Constanze Burak, Verena Brüll, Peter Langguth et al. · Zeitschrift für Ernährungswissenschaft · 2015 · 59 citations

Pharmacy, Pharmacokinetics, Pharmacology +4

No effects of quercetin from onion skin extract on serum leptin and adiponectin concentrations in overweight-to-obese patients with (pre-)hypertension: a randomized double-blinded, placebo-controlled crossover trial

Verena Brüll, Constanze Burak, Birgit Stoffel‐Wagner et al. · European Journal of Nutrition · 2016 · 56 citations

Agriculture, Endocrinology, Pharmacology +6

Acute intake of quercetin from onion skin extract does not influence postprandial blood pressure and endothelial function in overweight-to-obese adults with hypertension: a randomized, double-blind, placebo-controlled, crossover trial

Verena Brüll, Constanze Burak, Birgit Stoffel‐Wagner et al. · European Journal of Nutrition · 2016 · 47 citations

Agriculture, Nutritional Sciences, Pharmacology +11

Effect of alpha-linolenic acid in combination with the flavonol quercetin on markers of cardiovascular disease risk in healthy, non-obese adults: A randomized, double-blinded placebo-controlled crossover trial

Constanze Burak, Siegfried Wolffram, Berndt Zur et al. · Nutrition · 2018 · 40 citations

Agriculture, Nutrition, Nutritional Sciences +13