Bind calcium and can contribute to kidney stone formation in susceptible people. High in spinach, rhubarb, beet greens and almonds; boiling reduces the soluble fraction.
8 foods, grouped by presence band. Bands are used instead of amounts because compound content swings widely with cultivar, soil, storage and preparation — a single number per food would look more precise than the measurements justify.
One of the compounds this food is characterised by in the literature.
Spinacia oleracea
A fast-growing leafy annual in the amaranth family, eaten raw as young leaves or cooked as mature ones. It wilts to a fraction of…
Beta vulgaris subsp. vulgaris
A leafy form of the same species as beetroot, grown for its leaves and thick stalks rather than its root. The coloured stems owe…
Consistently reported in this food in amounts researchers treat as meaningful.
Prunus dulcis
The edible seed of a stone fruit closely related to the peach, eaten raw, roasted or ground into flour and butter. The USDA…
Beta vulgaris
The swollen taproot of a cultivated Beta vulgaris, deep red from betalain pigments. It is among the richest dietary sources of…
Sesamum indicum
Small oil-rich seeds used whole, toasted, or ground into tahini across the Middle East, Africa and East Asia. The USDA reference…
Recorded in this food without a dependable quantity attached to it.
Actinidia deliciosa
A fuzzy-skinned berry from a woody vine, with green or golden flesh and small edible black seeds. It contains actinidin, a…
Petroselinum crispum
A biennial Apiaceae herb eaten fresh in quantity in dishes such as tabbouleh and used as a garnish elsewhere. It is unusually…
Curcuma longa
The dried, ground rhizome of Curcuma longa, and the yellow base of most curry powders. The USDA entry is per 100 g of the dried…