Spectrophotometric Determination of Deacetylation Degree of Chitinous Materials Dissolved in Phosphoric Acid | Zendy

Hsiao HsienYi | Zendy; Tsai ChihCheng | Zendy; Chen Suming | Zendy; Hsieh BoChuan | Zendy; Chen Richie L.C. | Zendy

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Spectrophotometric Determination of Deacetylation Degree of Chitinous Materials Dissolved in Phosphoric Acid

Author(s) -

Hsiao HsienYi,

Tsai ChihCheng,

Chen Suming,

Hsieh BoChuan,

Chen Richie L.C.

Publication year - 2004

Publication title -

macromolecular bioscience

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.924

H-Index - 105

eISSN - 1616-5195

pISSN - 1616-5187

DOI - 10.1002/mabi.200400084

Subject(s) - phosphoric acid , acetylation , chemistry , degree (music) , organic chemistry , biochemistry , gene , physics , acoustics

Summary: A simple spectrophotometric method is proposed for determining deacetylation degrees ( DD ) of chitinous materials using phosphoric acid as the UV‐transparent solvent system. Calibrating by the extinction coefficients ( A 210 ) of D ‐glucosamine and N ‐acetyl‐ D ‐glucosamine, DD values (24–88%) were computed numerically. The results correlated well ( R 2 = 0.9805, n = 50) with those obtained by solid‐state 13 C NMR.Comparison of the results obtained by the proposed UV method and solid‐state 13 C NMR.

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