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Validating polyphenol intake estimates from a food-frequency questionnaire by using repeated 24-h dietary recalls and a unique method-of-triads approach with 2 biomarkers
Adventist Health Study method of triads phytochemicals polyphenols urinary polyphenols
2018/11/13
Background: The assessment of polyphenol intake in free-living subjects is challenging, mostly because of the difficulty in accurately measuring phenolic content and the wide presence of phenolics in ...
Polyphenol epidemiology: looking back and moving forward
Polyphenol epidemiology moving forward
2018/12/13
Polyphenols are bioactive compounds that are ubiquitous in plant-based foods and beverages, such as fruit, vegetables, nuts, legumes, whole-grain cereals, cocoa, tea, coffee, and wine (1). Dietary pol...
Antioxidant activity,S-alk(en)yl-l-cysteine sulfoxide and polyphenol content in onion (Allium cepa L.) cultivars are associated with their genetic background
Alliaceae cysteine sulfoxides simple sequence repeat (SSR) marker genotypes secondary metabolites
2016/5/11
Six onion cultivars Bingo, Dormo, Elenka, Elbrus, Spirit, and Sturon grown in the Czech Republic for commercial purposes were analysed to investigate the content of health-promoting compounds. The res...
Selecting plants with increased total polyphenol oxidases in the genus Trifolium
expression analysis polyphenolic enzyme protein quality Trifolium medium Trifolium pratense
2015/12/29
One of the aims in red clover (Trifolium pratense) breeding is to increase the polyphenol oxidase (PPO) activity, which may effectively reduce protein breakdown in silage and when cattle are fed by fr...
Characterisation of polyphenol oxidase and peroxidase and the role in browning of loquat fruit
Eriobotrya japonica PPO POD
2015/3/30
Polyphenol oxidase (PPO) and peroxidase (POD) were extracted from a new loquat fruit cultivar (Ninghaibai) and characterised using reliable spectrophotometric methods. In both cases, the optimum pH fo...
Influence of Thermal Treatment on Polyphenol Extraction of Wine cv. André
temperature wine grape colour
2015/3/4
The extraction of polyphenols and colour parameter development of the grape variety André processed by thermal
maceration techniques were examited.
Polyphenol content and antiradical activity in different apple varieties
apple varieties apple juice polyphenols antiradical aktivity
2015/1/22
Polyphenols are important antioxidant constituents of apples and they contribute positively to human health because they possess an antiradical activity. Fifteen apple varieties were analysed for thei...
Site conditions and genotype influence polyphenol content in potatoes
environmental conditions fertilization
2015/1/22
In the years 2005 and 2006 the effect of site conditions, yellow and purple fleshed varieties and mineral fertilization on the content of total polyphenols (TP) in potato tubers was investigated. In b...
Total polyphenol and main flavonoid antioxidants in different onion (Allium cepa L.) varieties
onion red yellow and white varieties polyphenols
2015/1/20
Polyphenolic antioxidant compounds were studied in three onion varieties (red – cv. Karmen, yellow – cv. Všetana and white – cv. Ala) regarding their total content and qualitative composition of ...
Influence of cultivar and storage of chicory plants (Cichorium intybus L.) on polyphenol composition and antioxidative potential
antioxidants AOP DPPH leaves storage
2014/3/28
We determine the total polyphenol content (TPC) and antioxidative potential (AOP) in external and internal leaves of different cultivars of chicory, both before and after storage. We analysed the red ...
Contusion Injury with Chronic In vivo Polyphenol Supplementation: Leukocyte Responses
PROANTHOCYANIDIN ANTIOXIDANT INFLAMMATION CYTOKINES MACROPHAGE
2017/5/18
In vivo, daily proanthocyanidolic oligomer (PCO) supplementation before and after experimental skeletal muscle contusion injury has been shown to result in a blunted neutrophil response in tissue, qui...
Characterisation of polyphenol oxidase from Melissa officinalis L. subsp. officinalis (lemon balm)
lemon balm protein enzyme kinetics inhibition
2014/2/24
Polyphenol oxidase (PPO) from Melissa officinalis L. subsp. officinalis (lemon balm) was partially purified by ammonium sulphate precipitation and dialysis; and then it was characterised in detail in ...
Cultivar influence on total polyphenol and rutin contents and total antioxidant capacity in buckwheat, amaranth, and quinoa seeds
pseudocereals phenolics rutin
2014/2/24
Five cultivars from each of the three types of pseudocereals, i.e. buckwheat, amaranth, and quinoa, were studied for total polyphenol and rutin contents as well as total antioxidant capacity of seeds....
Influence of Developmental Stage on Activities of Polyphenol Oxidase, Internal Characteristics and Colour of Lettuce cv. Grand Rapids
Developmental Stage Polyphenol Oxidase
2016/5/31
An analyzing study to evaluate the relationship between Polyphenol Oxidase (PPO) activity, internal qualities and degree of browning was conducted on lettuce var. Grand Rapids in order to understand t...
Rooting behaviour, polyphenol oxidase activity, and biochemical changes in grape rootstocks at different growth stages
Biochemical constituents grape rootstocks growth parameters
2011/6/29
Four grape rootstocks belonging to different Vitis species were planted in September. Rooting behaviour, polyphenol oxidase (PPO; EC 1.14.18.1) activity and biochemical parameters were studied at diff...