Mangrove bark: a renewable resin source for wood adhesives

From four solutions tested to extract tannins from mangrove bark for wood adhesives, hot water is recommended. Hot water extracted 21.4% of formaldehyde-hydrochloric acid reactive polyphenols on oven-dry bark basis.

De quatro solventes testados para extrair taninos de casca de mangue para adesivos para madeira, água quente é a mais recomendada. Agua quente extraiu 21.4% de polifenois da casca seca reativos em formaldeido-acido cloridrico.