Pengambilan Tanin dalam Serbuk Kulit Kelapa dengan Ekstraksi Menggunakan Etanol

Abstract

Coconut shell powder can be used as a planting medium called cocopeat. Cocopeat has several advantages, namely being able to bind and store water optimally, and containing essential nutritional elements that plants need. Behind the many advantages of cocopeat, there are also disadvantages of cocopeat, namely the tannin content which inhibits the absorption of nutrients into plants. However, if tannin can be separated from other ingredients, it can be used, for example in the health sector as a producer of anti-oxidants which can capture free radicals in the body. Apart from that, tannins are often used for industrial purposes, including as a leather tanner, as an adhesive, as a dye and so on. This tannin extraction aims to improve the quality of cocopeat so that it does not hinder the absorption of nutrients in cocopeat into plant roots, and to obtain tannin which is much needed for industrial purposes. In this research, tannins from coconut shell powder were extracted using ethanol. Optimal conditions to obtain maximum tannin extract are carried out at a solution boiling temperature of 78^oC cm, stirring speed of 300 rpm, ratio of solvent volume to material mass of 10 mL/g, and a process time of 3 hours. Under these conditions, it is able to extract 87% of the tannins in coconut shell powder.