Jurnal pangan nasional "terakreditasi" Kemeristekdikti dari Indonesian Food Technologists® - IFT
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Optimasi Ekstraksi Antosianin Pada Beras Hitam Sirampog Menggunakan Metode Ultrasound Extract Assist (UAE)

Awaliyatus Sholihah  -  , Indonesia
*Nur Aini orcid scopus  -  Jenderal Soedirman University, Indonesia
Hidayah Dwiyanti orcid  -  Universitas Jenderal Soedirman, Indonesia

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Abstract

Penelitian bertujuan untuk memperoleh variabel ekstraksi yang menghasilkan kadar antosianin dan total fenol maksimum dengan metode Ultrasonic-Assisted Extraction (UAE). Penelitian terdiri 2 tahap yaitu penelitian pendahuluan yang bertujuan menentukan komposisi pelarut yang paling tepat untuk proses ekstraksi. Penelitian utama bertujuan menentukan konsentrasi bahan dan waktu ekstraksi untuk mendapatkan hasil maksimal. Optimasi dilakukan menggunakan Respon Surface Methodology dengan rancangan Central Composite Design. Ada 2 faktor yang dicoba yaitu konsentrasi bahan dalam larutan (R 1 (0,05, 0,1 dan 0,15 g/l), dan waktu sonikasi (25, 35 dan 45 menit). Parameter yang diamati adalah kadar antosianin dan total fenol. Hasil penelitian menunjukkan bahwa komposisi pelarut yang paling tepat untuk proses ekstraksi beras hitam adalah perbandingan air dan etanol sebesar 51,5: 48,5. Kondisi optimal untuk ekstraksi antosianin pada beras hitam Sirampog menggunakan metode UAE adalah konsentrasi bahan 5 g/l selama 25 menit. Kondisi tersebut akan menghasilkan ekstrak dengan kadar antosianin 456 mg/100 g dan total fenol 6400 mg/100g.

Fulltext
Keywords: antosianin; fenol; Sirampog; ultrasound extract assist; waktu sonikasi
Funding: Ministry of research, technology and higher education

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