| abstract |
[PROBLEMS] To provide a method for efficiently obtaining a composition containing rhamnan sulfate from seaweeds. [Solution] Weight average molecular weight is 10,000 to 5,000,000, α-amylase inhibitory activity 50% inhibitory concentration (IC50) is 0.9mg/mL to 0.12mg/mL, blood coagulation double extension concentration (CT2) is 280mg/mL. Achieved by rhamnan sulfate-containing compositions that are ˜400 mg/mL. At this time, the amount of acid is preferably 0.6 mg/g to 1500 mg/g with respect to dry seaweeds. [Selection diagram] Fig. 3 |