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Determination of Carbonyl Groups in Lignin

Alternatively, the total carbonyl content of a lignin preparation may be determined by reduction with either sodium or potassium borohydride. This method is based on the Lindberg-Misiorny method for the determination of carbonyl groups in carbohydrates (Lindberg and Misiorny 1952, Lindberg and Theander 1954). Both sodium and potassium borohydrides are insoluble in ether but soluble in water without decomposition. At room temperature, they effectively reduce aldehydes and ketones in aqueous and methanol solutions, in particular in weakly alkaline solutions, without simultaneously reducing olefinic double bones ... [Pg.449]

GF Zakis, AA MeUds, and BY Nieberte. Methods for Determination of Quinone Carbonyl Groups in Lignins. Khim. Drev. 82-86, 1987. [Pg.96]

B Hortfing, T Tamminen, and E Kentta. Determination of Carboxyl and Non-conjugated Carbonyl Groups in Dissolved and Residual Lignins by IR Spectroscopy. Holtforschung 51 405 10, 1997. [Pg.134]

See other pages where Determination of Carbonyl Groups in Lignin is mentioned: [Pg.15]    [Pg.448]    [Pg.239]    [Pg.326]    [Pg.108]    [Pg.15]    [Pg.448]    [Pg.239]    [Pg.326]    [Pg.108]    [Pg.449]    [Pg.457]    [Pg.457]    [Pg.538]    [Pg.542]    [Pg.542]    [Pg.78]    [Pg.443]    [Pg.450]    [Pg.456]    [Pg.240]    [Pg.243]    [Pg.535]    [Pg.408]    [Pg.4244]    [Pg.448]    [Pg.449]    [Pg.456]    [Pg.239]    [Pg.243]    [Pg.538]    [Pg.257]    [Pg.482]    [Pg.108]    [Pg.93]    [Pg.220]    [Pg.469]    [Pg.138]    [Pg.144]    [Pg.105]    [Pg.227]    [Pg.230]    [Pg.231]    [Pg.424]    [Pg.449]    [Pg.278]    [Pg.130]    [Pg.227]    [Pg.368]    [Pg.426]    [Pg.429]   


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Carbonyl Group determination

Determination of Carbonyl Groups

In carbonyl groups

Lignin carbonyl groups

Lignins determination

Of carbonyl group

Of lignin

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