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Lotus root starch, soup

Pure lotus root starch contains a lot of iron and reducing sugar and other ingredients, contact with the air, easy oxidation, make the powder color from white to reddish. Other starches (such as sweet

Pure lotus root starch contains a lot of iron and reducing sugar and other ingredients, contact with the air, easy oxidation, make the powder color from white to reddish. Other starches (such as sweet potato, potato and water chestnut, pueraria, etc.) have no such changes and are pure white or yellowish. If the starch is rose red, it is caused by the addition of food coloring.