Occurrences Resveratrol

1 occurrences

1.1 plants
1.2 foods

1.2.1 wine , grape juice
1.2.2 selected foods


1.3 dietary supplements

occurrences
plants

resveratrol phytoalexin, class of compounds produced many plants when infected pathogens or physically harmed cutting, crushing, or ultraviolet radiation.

plants synthesize resveratrol include knotweeds, pine trees including scots pine , eastern white pine, grape vines, peanut plants, cocoa bushes, , vaccinium shrubs produce berries, including blueberries, raspberries, mulberries, cranberries, , bilberries.

foods

the levels of resveratrol found in food varies considerably, in same food season season , batch batch.

wine , grape juice

in 2007 review of published resveratrol concentrations, average in red wines 6994189999999999999♠1.9±1.7 mg trans-resveratrol/l (7000819999999999999♠8.2±7.5 µm, ranging nondetectable levels 14.3 mg/l (62.7 μm) trans-resveratrol. levels of cis-resveratrol follow same trend trans-resveratrol.

in general, wines made grapes of pinot noir , st. laurent varieties showed highest level of trans-resveratrol, though no wine or region can yet said produce wines higher concentrations other wine or region. champagne , vinegar contain appreciable levels of resveratrol.

red wine contains between 0.2 , 5.8 mg/l, depending on grape variety. white wine has less because red wine fermented skins, allowing wine extract resveratrol, whereas white wine fermented after skin has been removed. composition of wine different of grapes since extraction of resveratrol grapes depends on duration of skin contact, , resveratrol 3-glucosides in part hydrolysed, yielding both trans- , cis-resveratrol.

selected foods

ounce ounce, peanuts have 25% resveratrol red wine. peanuts, sprouted peanuts, have content similar grapes in range of 2.3 4.5 μg/g before sprouting, , after sprouting, in range of 11.7 25.7 μg/g, depending upon peanut cultivar.

mulberries (especially skin) source of as 50 micrograms of resveratrol per gram dry weight.

dietary supplements

there no studies show resveratrol supplements beneficial in humans. sales of resveratrol supplements increased in 2006 after studies on non-humans.

harvard university scientist , professor david sinclair co-founded sirtris pharmaceuticals, initial product of resveratrol formulation; sinclair became known making statements resveratrol like: “(it s) close miraculous molecule can find.... 1 hundred years now, people maybe taking these molecules on daily basis prevent heart disease, stroke, , cancer.” of anti-aging field more cautious, regard else resveratrol might in body , lack of bioavailability.

sinclair , others obtained significant news coverage resveratrol. sinclair quoted , pictured in online ads resveratrol supplements, many of implied endorsement of advertised product though sinclair had not endorsed them.

supplements vary in purity , can contain anywhere 50 percent 99 percent resveratrol.