2024年7月18日 星期一 19:43:55

如何提高薯类淀粉的白度

 

     白度是评判高品质薯类淀粉的指标之一,如何提高薯类淀粉的白度,本文将介绍一些在生产加工过程中需要注意的生产操作:
     在生产薯类淀粉时,用作生产淀粉的原料如马铃薯、甘薯和木薯通常都带有泥沙、杂草,所以在称量加工前一定要清洗干净。清洗效果的好坏直接影响到设备的寿命和淀粉质量,也就影响了淀粉的白度。
     粉碎后薯类细胞中所含的氢氰酸被释放出来。氢氰酸能与铁反应生成亚铁氰化物,呈淡蓝色。所以凡是与淀粉乳接触的设备或管道都要求用不锈钢或其他耐腐蚀材料制成。此外,粉碎后,薯细胞中的氧化酶释出,和空气中的氧起作用,使组成细胞的一些物质发生氧化,导致淀粉色泽发暗,因此在淀粉粉碎时或粉碎后立即向粉碎浆料中加入亚硫酸或其他化学物质以抑制氧化酶的作用。
 

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