超微粉碎技术在葡萄籽加工中的应用

Application of Superfine Grinding Technology in Process of Grape Seeds

葡萄籽具有极高的营养价值和药用价值.为充分利用葡萄籽中的功能性成分,对葡萄籽的清洗、干燥、杀菌、冷冻和超微粉碎等工艺进行了研究.结果表明：葡萄籽超微粉的最佳工艺条件为：40℃下干燥2h→-20℃下冷冻30min→以40g/kg的比例加入微晶纤维素→混合后粉碎25min.采用该工艺获得的葡萄籽超微粉的颗粒直径为2.5～22.5μm,平均直径为6.2μm,而葡萄籽细胞的直径为15.0～32.5μm,平均为24.9μm,说明细胞破壁率达到了100%.

Grape seeds are of very high nutritional and medicinal value. In order to make good use of the functional compounds in grape seeds, the processing technology of grape seeds including washing, drying, sterilizing, freezing and superfine grinding was investigated. An optimal processing procedure for superfine grinding was then determined, i.e. , dying the seeds at 40℃ for 2 h→freezing the seeds at - 20℃ for 30 min→adding microcrystalline cellulose in a content of 40 g/kg→mixing and grinding the seeds for 25 min. Thus, superfine grinds of grape seeds with a diameter of 2. 5 ～ 22.5 μm and an average diameter of 6. 2 μm were obtained. As the diameter of grape seed cell is 15.0 ～32. 5μm and is 24. 9μm on an average, it can be determined that the cell walls are totally broken.