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以魔芋葡甘聚糖为原料，分别采用苯甲酸、醋酸和没食子酸对魔芋葡甘聚糖进行酯化改性，研究了改性pH值、温度及改性处理时间对改性产物吸附空气中SO2和抑菌效果的影响，优化了改性工艺参数，得到了有较好使用效果的天然的有机大分子空气净化材料。研究结果表明：当采用苯甲酸为魔芋葡甘聚糖酯化改性剂时，改性产物对空气中的SO2吸附效果和抑菌作用效果优于使用醋酸和没食子酸的改性产物。其改性处理温度50℃，反应时间2 ...
Changes in Color Parameters during Fermentation and Storage of Red Wine Using Thai Roselle under Different pHs and SO2 Concentrations
color parameters anthocyanins pigments in wine
2010/11/23
A red wine was made from must consisting of dried roselle calyces, water, yeast extract, sugar, and NH4H2PO4. The pHs of wine samples were adjusted to various values within the range 2.5 to 4.0, or SO...