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Table 3 FTIR bands (cm−1) for commercial chitin, extracted chitin from glucose fermentation and from banana peel fermentation

From: Microbial extraction of chitin from seafood waste using sugars derived from fruit waste-stream

Functional group Commercial chitin Extracted chitin from glucose fermentation Extracted chitin from banana peel fermentation
O–H stretch 3447 3448 3423
C–H stretch 2891 2925 2921
C=O stretch of N-acetyl group (Amide I) 1660 1654 1655
N–H bend, C–N stretch (Amide II) 1559 1560 1542
CH3 in NHCOCH3 group 1379 1425 1383
CH2 wagging (Amide III) 1315 1315 1319
C–O–C stretch 1073 1072 1073