In-situ glyoxalization during biosynthesis of bacterial cellulose
메타 데이터
바이오화학분류
바이오플라스틱
기타
바이오정밀화학
기타
화장품용 기능성소재
기타
의료용 화학소재
식품첨가제
논문
In-situ glyoxalization during biosynthesis of bacterial cellulose
학술지
Carbohydrate polymers
저자명
Castro, C.; Cordeiro, N.; Faria, M.; Zuluaga, R.; Putaux, J.L.; Filpponen, I.; Velez, L.; Rojas, O.J.; Ganan, P.
초록
A novel method to synthesize highly crosslinked bacterial cellulose (BC) is reported. The glyoxalization is started in-situ, in the culture medium during biosynthesis of cellulose by Gluconacetobacter medellensis bacteria. Strong crosslinked networks were formed in the contact areas between extruded cellulose ribbons by reaction with the glyoxal precursors. The crystalline structure of cellulose was preserved while the acidic component of the surface energy was reduced. As a consequence, its predominant acidic character and the relative contribution of the dispersive component increased, endowing the BC network with a higher hydrophobicity. This route for in-situ crosslinking is expected to facilitate other modifications upon biosynthesis of cellulose ribbons by microorganisms and to engineer the strength and surface energy of their networks.