Pengaruh Konsentrasi Bahan Pengawet Alami dari Ekstrak Daun Gambir (Uncaria gambir Roxb) terhadap Mutu Tahu Selama Penyimpanan

Abstract

This study was performed to determine the effect of the addition of gambir leaf extract on tofu quality at room storage. Method of this study was completely randomized design with two factors i.e. the concentration of gambir leaf extract (G) : (0 %), (0,25 %), (0,5 %), (0,75 %) and (1 %) and storage time (L) : (0 days), (2 days), (4 days), and (6 days). The analyzed parameters were total microorganism, tofu acidity, immersion water acidity, moisture content, ash content, protein content, and sensory test (color, aroma, flavor, and texture). The amount of gambir leaf extract had highly significant effect on total microorganism, ash content, and sensory test ( color, aroma, and texture). Storage time (L) had highly significant effect on total microorganism, tofu acidity, immersion water acidity, water content, protein content, and sensory test (color, aroma, taste, and texture). The interaction of gambir leaf extract and storage time had highly significant effect on total microorganism and color. The best composition which gave the best effect on tofu was 0,5 % of gambir leaf extract and 4 days storage.