加拿大外贸
因此，用挤压膨化机生产水产料，应优于环模制粒机生产的料，因为环模制粒由于受温度的限制，其中淀粉的糊化度不可能高，一般不大于50%。糊化不仅提高了消化吸收率，而且改善了制粒和成形效果，因为糊精是很好的粘结剂。糊化的淀粉分子相互交联，形成网状的空间结构，在瞬间膨化后失去部分水分，冷却后成为膨化产品的骨架，使产品保持一定的形状。若原料配方中淀粉含量少，或根本不含淀粉，则很难形成疏松多孔的膨化结构。一定配方的原料，如淀粉含量高，则容易膨化，产品密度小。.英语好的,帮下忙吧!非常感谢!
Thus, Aquatic product feeding by the extruder should be better than the pelletizing ring die, because the ring die pellet due to temperature constraints, in which starch gelatinization is not impossible high, not generally bigger than 50%. Pasting is not only improve the digestion and absorption rate, but also improve the granulation and forming effect, Because the dextrin is the very good cementing agent. The dextrinize of starch molecules cross linking mutually, forms netted the spatial structure, in an instant after extruding losing part of the moisture contents, After cooling become puffs the product the skeleton, makes the product to maintain certain shape. If in raw materials formula the starch content is less, or simply does not contain the starch, it is difficult to form porous of puffed structure. A certain formula of raw materials, If the starch content is high, then easy to extruded, the product density is small.
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[ 本帖最后由 小兔豆 于 2011-1-17 16:59 编辑 ]
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