Yunus Cicek

Themazi is a family business that goes back to 1950'ies. We are producing oak gall which has the highest tannic acid %65-70 in the world. The tannic acid is a natural/organic additive for many sectors, like natural dyeing, chemical, cosmetic, winemaking. Gallnuts from the oak tree are the earliest and richest source for natural tannin. They are produced by insects who deposit their eggs in small punctures they make on young branches. As a protection, the tree excretes a tannin-rich substance that hardens and forms into a gallnut. These are collected and ground for use as a tannin mordant. Gallnut or Oak Gall is used to mordant cellulose fibers and fabrics before the alum mordant is used. Oak gallnut is abnormal outgrowths of plant tissues caused by various parasites, particularly insects. Oak galls, found on oaks in the Middle East, have long been used to make high-quality ink and for dyeing.