Journal
CARBOHYDRATE POLYMERS
Volume 153, Issue -, Pages 463-470Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.08.003
Keywords
beta-cyclodextrin; Laccase; Oxidation; Wool; Grafting
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Funding
- National Natural Science Foundation of China [21274055, 31300785]
- Program for Changjiang Scholars, Innovative Research Team in University [IRT_15R26]
- Fundamental Research Funds for the Central Universities [JUSRP11504]
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This study demonstrated a new enzymatic methodology to graft p-cyclodextrin onto wool. The primary hydroxyl groups in beta-cyclodextrin were oxidized to aldehyde groups using laccase/2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO), which reacted with the amino groups of wool to form Schiff bases. The effects of treatment conditions (treatment temperature, laccase dosage, TEMPO dosage, treatment time) on the aldehyde and carboxyl contents in beta-cyclodextrin were studied. FTIR spectrum of oxidized beta-cyclodextrin showed the presence of aldehyde and carboxyl groups. Results of MALDI-TOF mass spectroscopy confirmed the coupling of beta-cyclodextrin to tyrosine, which was used as a model compound for wool. ATR-FTIR spectroscopy of the grafted wool confirmed the presence of beta-cyclodextrin in grafted wool and the formation of a Schiff base between beta-cyclodextrin and wool. (C) 2016 Elsevier Ltd. All rights reserved.
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