PENGARUH KONSENTRASI PELARUT DAN LAMA EKSTRAKSI PADA PRODUKSI KARAGENAN
DOI:
https://doi.org/10.35800/mthp.7.1.2019.23908Keywords:
Carrageenan, Kappaphycus alvarezii, Steam Method, Karaginan, Metode Uap, NaOH, KOHAbstract
The purpose of this study is to obtain carrageenan from red seaweed Kappaphycus alvarezii using the steam method. In this study the treatment of 4% NaOH and 5% KOH was used and the extraction time was 7 hours and 10 hours. The stages of making carrageenan are; drying, soaking, washing, extraction, settling, filtering, drying and grinding. The results of this study showed that the highest yield was in 4% NaOH treatment, 10-hour extraction time was equal to 18.15%. The lowest water content was obtained from 5% KOH treatment, 10 extraction time which was 1.9%. The best pH value is in 4% NaOH treatment, 10 hours extraction time is 7.58. The best results of gel strength were obtained from 5% KOH treatment, 7 hours extraction time which was 78.3 mm/g/sec.
Keyword: Carrageenan, Kappaphycus alvarezii, Steam Method, NaOH, KOH.
Penelitian ini bertujuan untuk mendapatkan karaginan dari rumput laut merah Kappaphycus alvarezii dengan menggunakan metode uap. Pada penelitian ini digunakan perlakuan konsentrasi NaOH 4% dan KOH 5% dan waktu ekstraksi 7 jam dan 10 jam. Tahapan pembuatan karaginan ini adalah pengeringan, perendaman, pencucian, ekstraksi, pengendapan, penyaringan, pengeringan dan penggilingan. Hasil penelitian ini diperoleh rendemen terbanyak ada pada perlakuan NaOH 4%, waktu ekstraksi 10 jam yaitu sebesar 18,15%. Kadar air yang paling rendah diperoleh dari perlakuan KOH 5%, waktu ekstraksi 10 yaitu sebesar 1,9%. Nilai pH terbaik ada pada perlakuan NaOH 4%, waktu ekstraksi 10 jam yaitu sebesar 7,58. Hasil penelitian kekuatan gel paling terbaik diperoleh dari perlakuan KOH 5%, waktu ekstraksi 7 jam yaitu sebesar 78,3 mm/g/det.
Kata kunci: Karaginan, Kappaphycus alvarezii, Metode Uap, NaOH, KOH.
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