Included among these phytonutrients are proanthocyanidins and anthocyanins; flavan -3-ols like catechins and epicatechins; flavonols
like isorhamnetin, kaempferol, myricetin, and quercetin; and terpenoids like ursolic acid.
Fresh garden cress contains the flavonol kaempferol, and fresh dill provides good amounts of both kaempferol and the
flavonol isorhamnetin.
In the case of DM2, scientists now know that pear flavonols (
including isorhamnetin, quercetin, and kaempferol), flavan -3-ols (especially epicatechin), and the anthocyanins (found in red - skinned varieties including Red Anjou, Red Bartlett, Comice, Seckel, and Starkrimson) all help improve insulin sensitivity.
Red onions contain high amounts of the flavonols quercetin and
isorhamnetin as well as smaller amounts of flavonols kaempferol and myricetin.
Flavonoid antioxidants
like isorhamnetin, quercitin, and kaempferol are also found in Brussels sprouts, as are the antioxidants caffeic acid and ferulic acid.
Isorhamnetin is also made in the body when enzymes convert quercetine with the help of S - adenosylmethionine.
The top half of the plant, specifically E. purpurea, is particularly rich in flavonoids such as quercetin,
isorhamnetin, and anthocyanins compared to the other two species.
This information is a result of the decrease in malondialdehyde concentrations that occur when high doses of onion juice were given to the subjects.The researchers suspect that the antioxidants in question are probably selenium compounds found in onions, and phenols such as quercetin and
isorhamnetin.
Flavonoids in asparagus include quercetin, rutin, kaempferol, and
isorhamnetin.
Over 45 different flavonoids have been identified in kale, and especially kaempferol, quercetin, and
isorhamnetin.
Most prominent among kale's flavonoids are its flavonols, including kaempferol, quercetin, and
isorhamnetin.
It found that catechin, epicatechin,
isorhamnetin, quercetin and kaempferol were the prime antioxidants in almond skins.
The profile is varied, with the aforementioned lignans like isolariciresinol, and tons of specific antioxidant types including quercetin, quinic acid, terpenes, violaxanthin, kaempferol, rutin, and
isorhamnetin.
Almonds are especially rich in polyphenols and flavonoid antioxidants, including quercetin, catechins, kaempferol and
isorhamnetin.
Flavonoid antioxidants like
isorhamnetin, quercitin, and kaempferol are plentiful in cruciferous vegetables, as are antioxidants like caffeic acid and ferulic acid.
Boy choy also provides flavonoids including quercetin, kaempferol and
isorhamnetin, as well as numerous antioxidant phenolic acids, including hydroxycinnamic and malic acid.
These phytonutrients include flavonoids like quercetin, kaempferol, and
isorhamnetin, as well as numerous phenolic acids (including significant amounts of hydroxycinnamic acids).