PENGARUH WAKTU TERHADAP EKSTRAKSI PEKTIN DARI KULIT PISANG KEPOK DENGAN METODE MICROWAVE ASSISTED EXTRACTION (MAE)

Abstract

East Kalimantan is one of the bananas producing provinces with a potential of 79,343 tons/year. Meanwhile,banana peel as its waste is not utilized well. Whereas, the banana peel contains pectin up to 21% of the banana peel’smass. Therefore, it is important to study the extraction of pectin from banana peel. This research aims to determine theoptimum extraction time to obtain the highest rendement of pectin with Microwave Assisted Extraction method (MAE)that meets the standard. The pectin was extracted with variation of extraction time (15, 20, 25, 30 and 35 minutes) form30 grams that were dissolved in 600 mL of 0.25% HCl at 80°C using MAE as heating method with power of 600 Watt.The experimental results showed that the highest pectin’s rendement obtained at 30 minutes extraction time. The pectinproduced has rendement of 21.64%, water content of 12.4%, ash content of 7.29%, equivalent weight of 2397 mg,methoxyl content of 2.96%, and galacturonic acid content of 67.95%.