| 摘要 |
This invention relates to a method of purifying .beta.1,3-glucans which comprises cooling a hot alkaline solution of a microbially produced .beta.-1,3-glucan in a mixture of water and a hydrophilic organic solvent, then, where necessary, further adding a hydrophilic organic solvent, and neutralizing the mixture containing precipitated glucan. The invention provides a method of purifying .beta.-1,3-glucans which is commercially very advantageous in that it does not entail an excessive rise of viscosity and, hence, insures the ease of handling. The .beta.-1,3-glucans purified by the method of the invention impart excellent thickening, water-holding, swelling and/or plastic characteristics to various substrates and can be used advantageously in chemical, food and other industries. |
