ᎢᏴ ᎠᏂᏙᎾᎥ-ᏬᏗᎨ ᎦᏃᏥ ᎨᏒᎢ ᏬᏗᎨ ᎬᏗᏍᎬᎢ tannin (ᏯᏛᎾ ᎯᎠ ᏚᏙᎥ ""ᎤᏣᏓᏪ"") ᎠᎴ ᏐᎢ ᏑᏓᎴᎩ ᎠᏩᏛᏗ ᎭᏫᎾᏗᏢ ᎢᏴ ᎠᏂᏙᎾᎥ ᎢᏳᏍᏗ ᏯᏛᎿ, ᏡᎬ ᎤᏯᎸ, ᎠᎴ ᏐᎢ ᏯᏛᎿ ᏙᏧᏓᎴᏅ. ᎾᏍᎩ ᎨᏒᎢ ᎦᏓᏆᎵ ᎠᎴ ᏬᏗᎨ ᎭᏫᎾᏗᏢ ᏗᎧᏃᏗ, ᎬᏙᏗ ᎯᎠ ᏗᏙᎳᎩ ᎤᏓᏩᏗᏍᎬ ᎥᎵᏍᎦᏍᏙᏗᏍᎬ ᎾᎿ ᎯᎠ ᎦᏟᏐᏗ chemicals ᎠᎴ ᎯᎠ ᏗᎧᏃᏗ ᎯᎠ ᎤᏇᏓᎵ. ᎢᏴ ᎠᏂᏙᎾᎥ-ᏬᏗᎨ ᎦᏃᏥ ᎨᏒᎢ ᎾᏍᎩ ᏂᎨᏒᎾ ᏐᏈᎵ ᎤᏂᏴᏍᏗ ᎭᏫᎾᏗᏢ ᎠᎹ; ᎾᏍᎩ ᏫᏚᏳᎪᏛ ᎠᏲᎶᎬ, ᎠᎴ ᎢᏳᏃ ᎠᎦᏍᎦᏂ ᎦᏚᎳᏍᏙᏗ ᎠᎴ ᎾᎯᏳᎢ ᎤᎧᏲᏗ ᎾᏍᎩ ᏫᎵ ᎠᎦᏲᎳᏗᏍᏗ ᎠᎴ ᏗᏙᎳᎩ ᎦᏲᎵᎨ ᎦᏓᏆᎵ ᎠᎴ ᎠᏍᏓᏰᎯᎨ. ᎭᏫᎾᏗᏢ ᎤᏗᎴᎩ ᎠᎹ, ᎾᏍᎩ ᏫᎵ ᎠᎦᏲᎳᏗᏍᏗ drastically ᎠᎴ plasticize, ᏗᎾᏙᎳᎩ ᏄᏍᏛ ᎢᏯᏛᏁᏗ ᎠᎴ ᏭᎵᏱᎶᎸ ᏗᎾᏙᎳᎩ ᏩᎾ ᎤᏲᏍᏗ.