| The countries that would otherwise have imported kanten from Japan could no longer do so; consequently, they were forced to try producing kanten and eventually developed industrial methods of producing kanten without relying on natural conditions. |
寒天の供給を絶たれた諸外国は自力による寒天製造を試み、自然に頼らない工業的な寒天製造法を開発した。 |