| 摘要 |
PURPOSE: A manufacturing method of jujube origin pectin is provided to effectively extract pectin from a jujube. CONSTITUTION: A jujube origin pectin production method comprises the following steps: a step which treats freeze-dried jujube with hemicellulase; a step which extracts supernatants by extracting the jujube at 60-70 deg. C for 1-3 hours by centrifuging after adjusting in the pH into 0.5-1.5, and adding acid in the jujube which is treated with hemicellulase; and a step which precipitates pectin by adding isopropyl alcohol in the supernatants. The treatment of hemicellulase is executed for 4 hours at 70 deg. C. The isopropyl alcohol is added in a weight ratio of 1:3. The jujube origin pectin has 20-40 mol% methylation degree and 1-5 mol% of acetylation degree, and the contents of galacturonic acid is 40-60 mol%. |
