PENGARUH KONSENTRASI HCL DAN PH PADA EKSTRAKSI PEKTIN DARI ALBEDO DURIAN DAN APLIKASINYA PADA PROSES PENGENTALAN KARET

Pectin is a complex polysaccharides compound which contained in plant cell walls. It is used in food manufacturing processes, adsorbent for waste water treatment and coagulant for rubber industry. Albedo durian was one of the potential sources of pectin, because albedo durian is consist of pectin compound. Acid extraction process was used to decompose pectin compound which contained in albedo durian. In this research, twenty grams of albedo durian was reacted with hydrochloric acid using stirred tank reactor. This process was conducted at temperature 90 0C for 1 hour in various solvent concentration and PH. The purpose of this research was to study the effect of solvent concentration and PH in pectin extraction process and the effect of adding pectin in process of latex coagulation. The result showed that the higher PH and solvent concentration, the higher yield of pectin. The maximum yield of pectin which was obtained in this research is 89.55%. The methoxyl contain and galacturonic which was obtained in this research between 2.430-3.13% and 67.65-82.02%, rescpectively. The Minimum time for latex coagulation about 5 minute using ratio pectin and latex 5:5.