| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively obtain a viscosity improver for Chinese yam safely usable and capable of improving viscosity of Chinese yam only by adding and mixing to frozen Chinese yam or dried yam powder by containing fine powder of egg shell as an active component. SOLUTION: For instance, an egg is cracked and content solution is removed, then the egg shell is coarsely crushed, thus an egg shell membrane is removed and the egg shell is well washed, then dried. The dried egg shell is coarsely crushed by a coarse crusher such as a hummer mill and subjected to a fine crusher to obtain fine powder of egg shell having <=88μm maximum granular diameter as an active component. Preferably, an adding amount of the viscosity improver is 0.5-2.0% to the Chinese yam (reducing to solid component). |
