KARAKTERISTIK BERAS ANALOG DARI TEPUNG JAGUNG- KACANG MERAH MENGUNAKAN AGAR-AGAR SEBAGAI BAHAN PENGIKAT
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Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian
Abstract
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To increase the nutritional value of analog rice from corn flour, especially in increasing protein levels, it is necessary to add a protein source, namely red bean flour. The addition of agars as binder is needed to form a compact analog rice character. The purpose of the study are 1) to determine the right formula in making analog rice from corn flour and red bean flour with the addition of gelatin; 2) to study the physical, chemical and sensory properties of the best analog rice and comparing it with parboiled rice. The study used a factorial Completely Randomized Design (CRD) with 2 factors, namely the proportion of corn flour:red beans (90:10; 85:15; 80:20; 75:25 and 70:30), and the addition of agar (0.5; 1; 1.5 and 2%). Variables observed in analog rice include yield, rehydration coefficient, water absorption, density, moisture content, protein content, fat content, carbohydrate content and sensory test (color, aroma, texture, flavor and preference). The best analog rice formula is made from corn flour: red bean flour with a ratio of 70:30 and 1.5% added agar. The analog rice has a protein content of 13.44%, fat content of 0.941%, moisture content of 5.15%, carbohydrate content of 78.95%, rehydration coefficient of 3.73 and bulk density of 0.517 g/ml. IR 64 rice has more advantages in terms of color, flavor and aroma, but texture and the panelists' preference for analog rice and IR64 rice is no different. Thus this analog rice can be used to substitute rice for physical, chemical and sensory properties no different with IR64 rice.
Keywords
agars, analog rice; corn flour; red bean flour; protein content; preference; fluffy texture; preference.