Gámez Sara, Ramírez José A, Garrote Gil, Vázquez Manuel
Department of Food Science and Technology, U A M Reynosa-Aztlán, Universidad Autónoma de Tamaulipas, Apartado Postal 1015, Reynosa, Tamaulipas, 88700 Mexico.
J Agric Food Chem. 2004 Jun 30;52(13):4172-7. doi: 10.1021/jf035456p.
Sugar cane bagasse, a renewable and cheap bioresource, was hydrolyzed at 100 degrees C using phosphoric acid at different concentrations (2, 4, or 6%) and reaction times (0-300 min) to obtain fermentable sugar solutions, which have a high concentration of sugars (carbon source for microorganism growth) and a low concentration of growth inhibitors (acetic acid and furfural). Xylose, glucose, arabinose, acetic acid, and furfural were determined following the hydrolysis. Kinetic parameters of mathematical models for predicting these compounds in the hydrolysates were obtained. Derived parameters such as efficiency of hydrolysis or purity of hydrolysates were considered to select as optimal conditions 6% phosphoric acid at 100 degrees C for 300 min. Using these conditions, 21.4 g of sugars L(-)(1) and <4 g of inhibitors L(-)(1) were obtained from the hydrolysis with a water/solid ratio of 8 g of water g(-)(1) of sugar cane bagasse on a dry basis.
甘蔗渣是一种可再生且廉价的生物资源，在100℃下使用不同浓度（2%、4%或6%）的磷酸并在不同反应时间（0 - 300分钟）进行水解，以获得可发酵糖溶液，该溶液含有高浓度的糖（微生物生长的碳源）和低浓度的生长抑制剂（乙酸和糠醛）。水解后测定了木糖、葡萄糖、阿拉伯糖、乙酸和糠醛的含量。获得了用于预测水解产物中这些化合物的数学模型的动力学参数。考虑了诸如水解效率或水解产物纯度等衍生参数，以选择100℃下6%磷酸反应300分钟作为最佳条件。在这些条件下，以甘蔗渣干基计，水/固比为8克水/克甘蔗渣进行水解，可获得21.4克/升的糖和低于4克/升的抑制剂。
