Rhus coriaria L.

Adsorption of Cu (II) from Aqueous Solutions by Sumac Rhus coriaria L.) Tannins... 

Keywords Cu(II) adsorption, Rhus coriaria L., sumac leaves, tannins... 

Rhus coriaria L. is a shrab, which reaches 3M p in high in the wild. Its powdered leaves were used as a tanning agent for its high tannin content [10]. Tannins are found in the leaves, fmit, barks, roots and wood of trees. They can be classified into two groups condensed tannins and hydroly sable tannins [11]. The co-occurrence of both kinds of tannins in the same plant or plant tissue is often observed [12]. The main compounds present mRhus coriaria L. are hydrolysable gallatonnins. 

The amount of adsorption on the sumac leaves (Rhus coriaria L.) was determined from the difference in concentration before and after the adsorption experiment as the following equation. 

Testing of Black Natural Dyeings. Black dyeings are first boiled in tin(II) chloride solution (15). During this treatment, dyeings with iron tannate (C.I. Natural Brown 6) become almost colorless, whereas dyeings with tanners sumach (Rhus coriaria L., Herba, C.I. Natural Brown 6) turn yellow-orange because of their quercetin content. 

Giancarlo, S., L.M. Rosa, F. Nadjafi, and M. Francesco. 2006. Hypoglycaemic activity of two spices extracts Rhus coriaria L. and Bunium persicum Boiss. Nat. Prod. Res. 20(9) 882-886. 

---