| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient production method for an alginic acid of low molecular weight or a derivative thereof, the alginic acid of low molecular weight or the derivative thereof, and a depolymerization method for an alginic acid of high molecular weight or a derivative thereof. SOLUTION: The present invention discloses (1) the production method for the alginic acid of low molecular weight or the derivative thereof of reducing the alginic acid having 200 thousands or more of weight average molecular weight by a GPC method, or the derivative thereof, into the alginic acid having a weight average molecular weight less than 100 thousands or a derivative thereof, by ball mill treatment, (2) the alginic acid having 30-100 thousands of weight average molecular weight by the GPC method and containing 10 wt.% or less of content of an oligomer component having a weight average molecular weight less than 10 thousands, or the derivative thereof, and (3) the depolymerization method for the alginic acid of high molecular weight or the derivative thereof. COPYRIGHT: (C)2009,JPO&INPIT
|
