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Identification and Quantification of Avenanthramides and Free and Bound Phenolic Acids in Eight Cultivars of Husked Oat ( Avena sativa L) from Finland.

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Finland is the second largest oat producer in Europe. Despite the existing knowledge of phenolics in oat, there is little information on the phenolic composition of oats from Finland. The aim of the study was to investigate the concentrations of free and bound phenolic acids, as well as

Mass spectrometric characterisation of avenanthramides and enhancing their production by germination of oat (Avena sativa).

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Avenanthramides are amides, with a phenylalkenoic acid (PA) and an anthranilic acid (AA) subunit, which are secondary metabolites of oat. Oat seeds were germinated, extracted, and the avenanthramides analysed by a combination of UHPLC with ion trap and high resolution ESI-MS. Typical fragmentation

Enhancement of γ-aminobutyric acid, avenanthramides, and other health-promoting metabolites in germinating oats (Avena sativa L.) treated with and without power ultrasound.

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Power ultrasound as an emerging processing technology has been investigated for stimulating seeds to enhance germination and accumulation of health-promoting metabolites, such as γ-aminobutyric acid (GABA) and phenolic compounds. This work was undertaken to evaluate the effects of power ultrasound

In vitro total antioxidant capacity and anti-inflammatory activity of three common oat-derived avenanthramides.

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To better understand mechanisms underlying the health benefits of oats, the free radical scavenging capacities of oat avenanthramides 2c, 2f, and 2p and their ability to inhibit NF-κB activation were evaluated. The antioxidant capacities of 2c, 2f, and 2p against peroxyl radicals, hydroxyl radicals,

Avenanthramides in oats (Avena sativa L.) and structure-antioxidant activity relationships.

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Eight avenanthramides, amides of anthranilic acid (1) and 5-hydroxyanthranilic acid (2), respectively, and the four cinnamic acids p-coumaric (p), caffeic (c), ferulic (f), and sinapic (s) acid, were synthesized for identification in oat extracts and for structure-antioxidant activity studies. Three

Effect of chemical systemic acquired resistance elicitors on avenanthramide biosynthesis in oat (Avena sativa).

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Oats produce a group of phenolic antioxidants termed avenanthramides. These metabolites are, among food crops, unique to oats and have shown, in experimental systems, certain desirable nutritional characteristics such as inhibiting atherosclerotic plaque formation and reducing inflammation.

Avenanthramides are bioavailable and accumulate in hepatic, cardiac, and skeletal muscle tissue following oral gavage in rats.

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Avenanthramides (AVA), polyphenols found exclusively in oats ( Avena sativa L.), may play a role in the anti-inflammatory and antiatherogenic activity of oats. The bioavailability of AVA has been demonstrated previously, but its distribution at the organ and tissue level and the extent of

Overview of the Anticancer Profile of Avenanthramides from Oat.

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Cancer represents one of the leading causes of death worldwide. Progresses in treatment of cancer have continued at a rapid pace. However, undesirable side effects and drug resistance remain major challenges for therapeutic success. Natural products represent a valuable starting point to develop new

Antiproliferative activity of vitexin-2-O-xyloside and avenanthramides on CaCo-2 and HepG2 cancer cells occurs through apoptosis induction and reduction of pro-survival mechanisms.

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OBJECTIVE CaCo-2 colon cancer cells and HepG2 liver cancer cells represent two malignant cell lines, which show a high resistance to apoptosis induced by the conventional anticancer drugs. Vitexin-2-O-xyloside (XVX) and avenanthramides (AVNs) are naturally occurring dietary agents from Beta vulgaris

Key Phytochemicals Contributing to the Bitter Off-Taste of Oat (Avena sativa L.).

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Sensory-directed fractionation of extracts prepared from oat flour (Avena sativa L.) followed by LC-TOF-MS, LC-MS/MS, and 1D/2D-NMR experiments revealed avenanthramides and saponins as the key phytochemicals contributing to the typical astringent and bitter off-taste of oat. Besides avenacosides A

Quantitation and taste contribution of sensory active molecules in oat (Avena sativa L.)

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A total of 59 taste active molecules were quantitated, and then rated for their individual taste impact on the basis of dose-over-threshold factors (DoT) in oat flour (Avena sativa L.). A sensitive HPLC-MS/MS-method was developed to quantitate bitter-tasting steroidal and furostanol-saponins as well

The effect of mechanical processing on avenanthramide and phenol levels in two organically grown Italian oat cultivars.

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Avenanthramides (AVNs), free and bound phenols and their antioxidant capacities (ORAC) were evaluated in two Avena sativa L. cultivars, Donata and Flavia. The cultivars (cvs.) were grown in loamy and medium texture soils and assessed after industrial dehulling and milling. Total dietary fiber,

Contents of phenolic acids, alkyl- and alkenylresorcinols, and avenanthramides in commercial grain products.

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The contents of free and total phenolic acids and alk(en)ylresorcinols were analyzed in commercial products of eight grains: oat (Avena sativa), wheat (Triticum spp.), rye (Secale cerale), barley (Hordeum vulgare), buckwheat (Fagopyrum esculentum), millet (Panicum miliaceum), rice (Oryza sativa),

Avenanthramide, a polyphenol from oats, inhibits vascular smooth muscle cell proliferation and enhances nitric oxide production.

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The proliferation of vascular smooth muscle cells (SMC) and impaired nitric oxide (NO) production are both crucial pathophysiological processes in the initiation and development of atherosclerosis. Epidemiological data have indicated that diets rich in whole grain foods are associated with a reduced

The Biosynthetic Pathway of Major Avenanthramides in Oat.

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Avenanthramides are a group of N-cinnamoylanthranilic acids, with health-promoting properties mainly found in oat (Avena sativa L.). However, the biosynthetic mechanism for the main three types of avenanthramides (Avn-A, Avn-B and Avn-C) is not completely understood. In the present

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