By John F Kennedy, Glyn O Phillips, Peter A Williams, J.L. Piculell

The lawsuits of the Cellucon belief convention held in Lund, Sweden, in 1993. the most recent clinical advances are lined, environmental issues and the ensuing financial bills are handled. The papers have unusually large functions throughout a couple of industries, together with nutrition processing, prescription drugs, chemical processing, civil engineering and composite fabrics construction.

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Extra resources for Cellulose and Cellulose Derivatives: Cellucon '93 Proceedings: Physico-Chemical Aspects and Industrial Applications

Example text

Teeri, T. Drakenberg and 0. Teleman, manuscript in preparation. 8) in order to increase their bleachability. Pulps were treated either with a purified single enzyme or the enzymes were successively added in different combinations. The residual pulps were delignified with alkaline peroxide and analysed for kappa number and ISO-brightness. 5 units and combination with lignin modifying enzymes improved the value by a further one unit. Lignin modifying enzymes when acting alone gave equal or even poorer pulp values than the reference.

Table I. Cleavage pattern for the CBH II hydrolysis of the substrates cellotriose to cellohexaose. Substrate Products Relative amount cellotriose + a-cellobiose + glucose cellotetraose + a-cellobiose cellotriose + + cellobiose glucose 49 1 cellopentaose + a-cellobiose a-cellotriose + + cellotriose cellobiose 50 50 a-cellobiose a-cellotriose + + cellotetraose cellotriose 50 50 cellohexaose 40 Biosynthesis and biodegradation of cellulose Kinetic rates. Both HPLC and NMR data show that the catalytic rates for natural substrates are much higher than for 4-methylumbelliferyl substituted substrates.

Knowles and T. A. Jones, Science, 249, (1990) 380-386. 6. A. Teleman, A. Valkeajarvi, A. Koivula, T. Reinikainen, T. Teeri, T. Drakenberg and 0. Teleman, manuscript in preparation. 8) in order to increase their bleachability. Pulps were treated either with a purified single enzyme or the enzymes were successively added in different combinations. The residual pulps were delignified with alkaline peroxide and analysed for kappa number and ISO-brightness. 5 units and combination with lignin modifying enzymes improved the value by a further one unit.

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