ANALISA KONSENTRASI POLIFENOL DALAM PRODUK TEH LIPTON MENGGUNAKAN METODE ANALISIS SPEKTOFOTOMETRI VISIBEL (The Analysis of Polifenol Concentration in product Lipton Tea Using Visible Spectrofotometri Analysis Method)

Abstract

Polyphenols are a group of chemicals found in plants, polyphenols in tea are different from polyphenols found in other plants. Polyphenols in tea do not adversely affect the digestion of food. Tea polyphenols are antimicrobial (bacteria and viruses), antioxidants, antiradiate, strengthen blood vessels, promote secretion and inhibit the growth of cancer cells. Polyphenols are a major group of lipton tea substances and most influential on all tea components. In taking polyphenols by using the extraction method using Aquadest. The purpose of extraction is to withdraw the chemical components present in the material. This extraction is based on the principle of mass transfer of the component of the substance into the solvent, where the displacement begins at the interface layer then diffuses into the solvent. Spectrophotometer is a device used to measure relative energy if the energy is transmitted, reflected or emitted as a function of wavelength. In practice the concentration analysis of polyphenols using Visibel spectrophotometric instrument with 725nm wavelength concentration of polyphenol The result of polyphenol experiment of lipton sample got concentration 25,646; 26,937; 27,306; 50,369; 53.69; 59.779; 127.122 (ppm). Keywords : Pholypenol,SpectrophotometryVisible,Absorbance,Lambert Beer