摘要：【中文】本发明公开了一种无明矾红薯粉的制作工艺，将50份红薯淀粉、0.44‑2.2份复合添加剂及30份水混合后进行打浆，随后加入30份水进行搅拌打糊，得预处理粉芡；将预处理粉芡进行煮粉糊化，随后放入粉丝机中挤压成型，得成型粉丝；将成型粉丝加入沸水煮制后放入冷水中浸泡冷却，干燥后即得一种无明矾红薯粉丝。本发明制得的无明矾红薯粉丝不添加明矾，粉丝不粘连、不断条且筋道，杜绝了铝离子对人体潜在的危害，解决了长期以来渴望解决的问题。且生产方法简单，适合于工业化生产及家庭式、小批量的人工挤压生产。公开的复合添加剂具有较广的适用范围，可以用于马铃薯淀粉、红薯淀粉及木薯淀粉生产粉丝粉条。 【EN】The invention discloses a preparation process of alum-free sweet potato powder, which comprises the steps of mixing 50 parts of sweet potato starch, 0.44-2.2 parts of compound additive and 30 parts of water, pulping, adding 30 parts of water, stirring and pasting to obtain pretreated starch; cooking the pretreated starch paste, and then putting the starch paste into a vermicelli machine for extrusion forming to obtain formed vermicelli; adding boiling water into the formed vermicelli, boiling, soaking in cold water, cooling, and drying to obtain the alum-free sweet potato vermicelli. The alum-free sweet potato vermicelli prepared by the invention is not added with alum, is not adhered, broken and chewy, avoids the potential harm of aluminum ions to human bodies, and solves the problem which is eagerly solved for a long time. And the production method is simple and is suitable for industrial production and household and small-batch manual extrusion production. The disclosed composite additive has a wide application range, and can be used for producing vermicelli from potato starch, sweet potato starch and cassava starch.