Research of the agglomerates of grape seeds ultrafine-powder

chinois. 为了解决葡萄籽在超微粉过程中的结块问题，对影响葡萄籽超微粉结块的葡萄籽水分含量、脂肪含量、葡萄籽粉碎时间、抗结剂的选择等因素进行了研究。结果表明，葡萄籽水分含量大于50.0 mg/g时，结块量增加明显；脂肪含量为116 mg/g时结块较少,脂肪含量越高越易结块；葡萄籽粉碎时间超过25 min时，结块量增多，延长到55 min后趋于稳定；储藏时间对葡萄籽超微粉结块的影响不大；使用抗结剂可减少葡萄籽超微粉的结块，在微晶纤维素、硬脂酸钙、二氧化硅等几种抗结剂中，微晶纤维素的抗结块能力最好，以30～35 g/kg微晶纤维素对结块抑制作用最为显著。因此在葡萄籽加工中,选择脂肪含量低的葡萄籽,并干燥到水分含量恒定,粉碎时添加30~35 g/kg微晶纤维素,并控制粉碎时间在25 min以内，可有效减少超微粉结块。

anglais. In order to solve the agglomeration of the grape seeds ultrafine-powder, the factors which influenced the agglomeration of grape seeds ultrafine-powder, such as different moisture content of grape seeds, different fat content of grape seeds, different smashing of grape seeds, and the choice of anti-agglomeration reagent were studied. The result indicated when the moisture content was bigger than 50.0 mg/g, more agglomeration increased obviously; when fat content was bigger than 116 mg/g, there was little agglomeration; when smashing time surpassed 25 min, more agglomeration increased, and tended to keep stable after 55 min time; with the time of storage extended, the agglomeration of grape seeds ultrafine-powder did not increase; the anti-agglomeration reagent coule be used to reduce the agglomeration of grape seeds ultrafine powder in the Microcrystalline Cellulose, Calcium Stearate, Silicon Dioxide, among which the Microcrystalline Cellulose was better; the Microcrystalline Cellulose between 30-35 g/kg showed best inhibition. So, in the processing of the grape seeds, it’s good to choose low fat content, drying moisture content to invariableness, and when crushed, add the Microcrystall the Cellulose between 30-35 g/kg, and control the time of comminution of grape seeds in less than 25 min.