The chemical composition of oak fruit: starch, protein, various sugars, especially quercite, oil and tannin The chemical composition of oak leaves and bark: a tannin called quercetinic acid soluble in water, a sugar called quercite, a bitter substance called quercetin, mucilage, a red substance.
Oak fruit can be considered as a nut. Acorns are green at first. It can be eaten raw or roasted or even boiled. Oak fruit has many properties.
Oak is one of the nutritious and very useful fruits that is mostly found in Zagros and Lerneshin regions of Iran. The fruit of the oak tree, which is also known as the forest oak, has a spherical appearance with a firm skin and a relatively fatty core.
