Abstract
<p>Abstract: One of the natural dye sources for the brown color called tannins is Resin Banana<br />Leaf Stem. Tannins were obtained through the extraction process of Resin Banana Leaf Stem<br />using 96% ethanol. This study aimed to obtain a total level by extraction and drying. The<br />influence of the material with a solvent ratio (weight/volume), time, temperature, and rotational<br />speed stirrer in the extraction of dye from resin stem of banana were studied to get an optimum<br />process. This experiment is using some ratios of the weight of banana leaf to the volume of<br />solvent, i.e.: 20:200 and 50:200 (g/ml). The condition was set at 63<br />C for 160 minutes and<br />stirring rotational speed of 200 rpm. With the same material, extraction with soxhlet was done<br />until the solvent becomes clear. Total tannin was obtained at 7.68%. With a three-neck flask<br />extraction process obtained the optimum conditions, i.e.: the ratio of the weight to the volume of<br />solvent of 50:200 g/ml at 63<br />o<br />o<br />C, and stirring rotational speed of 200 rpm for 140 minutes. This<br />condition process produce heavy tannins about 29.2576 mg.<br />Keywords: banana stem, resin, extraction, natural dye</p>
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