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讓玉米漿幹粉的質量保持穩定的措施

玉米浆干粉是鲜玉米经过瞬间加热喷雾干燥而成，保持了玉米浆的所有特性，是液体玉米浆的替代品，可广泛用于制药、味精等生化发酵，也可以用于饲料、肥料添加。

　　對于粘度大、糖含量高的玉米漿來說，傳統的幹燥方法並不可行。目前流行的方法是噴霧幹燥（壓力噴霧、離心噴霧），主要有高溫噴粉和超低溫噴粉兩種幹燥工藝，前者加工成本低但容易致蛋白質或遊離氨基酸的焦化和炭化現象，而後者雖然加工成本高但不破壞玉米漿的成分，質量穩定可控，可保障用戶生物發酵的穩定性和重現性。

　　玉米浆干粉质量稳定是需要浸泡前经过除杂质、洗涤，将玉米表面杂质去处。浸泡液在浓缩前经过过滤，将不溶性杂质去处。采用四效蒸发浓缩，较采用单效及双效浓溶设备浓缩时受热时间短，有效成分破坏少。采用低温喷雾干燥，产品无焦化现象。现大部分厂家采用煤炭和天然气作为能源来烘干玉米浆，导致进风温度波动大，而喷嘴的流量却无法做出相应的及时调整，导致产品质量波动大，批次之间比稳定，影响发酵效果。而斯貝爾公司采用蒸汽作为能源，不但可以有效的避免上述不稳定因素，还可以降低产品的灰分含量，增加同单位的有效物质的利用。

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