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. 2023 Jan 11;9(1):57. doi: 10.3390/gels9010057

Table 3.

IR spectroscopy results.

Λ,cm−1 Bonds Fluctuations λ,cm−1 Bonds Fluctuations λ,cm−1 Bonds Fluctuations λ,cm−1 Bonds Fluctuations
Maltodextrin ZnO-maltodextrin Agar–agar ZnO-agar–agar
3335 C–H 3399 C–H 3275 C–H 3414 C–H
2912 C–H 2880 C–H 3080 C–H 2893 OH
1627 C–C 2899 C–H 2956 C–H 1564 CH3
1437 OH 1529 C–C 2916 C–H 1496 OH
1388 CH3 1401 OH 1656 C–C 1342 CH3
1211 CH3 1296 CH3 1462 OH 1287 CH3
1140 CH2 978 CH3 1415 OH 1134 CH2
1058 CH2 883 CH3 1332 OH 1098 CH2
989 CH3 637 C–H 1263 CH3 980 CH3
918 CH3 567 Zn–O 1159 C–O 875 CH3
835 CH3 - - 1122 C–O 782 C–H
752 C–H - - 1084 CH2 631 C–H
683 C–H - - 1030 CH2 565 Zn–O
- - - - 767 CH2, CH3 - -
- - - - 729 CH2, CH3 - -
Methylcellulose ZnO-methylcellulose Hydroxyethyl-cellulose ZnO-hydroxyethylcellulose
3478 C–H 3109 C–H 3437 C–H 3239 C–H
3443 C–H 1919 CH3 3283 C–H 2945 C–H
2940 C–H 1555 C–C 3167 C–H 1597 C–C
2916 C–H 1397 OH 1649 C–C 1389 OH
1680 C=C 1340 CH3 1568 CH2 1339 CH3
1622 C–C 1288 CH3 1410 OH 1287 CH3
1478 CH3 1242 CH3 1024 CH3 1146 CH3
1402 OH 1003 CH3 925 CH3 1053 CH3
1321 CH3 974 CH3 891 CH3 1026 CH3
1254 CH3 886 CH2 852 CH2 936 CH3
1180 CH3 783 C–H 804 CH2 829 CH2
1134 CH3 702 C–H - - 756 C–H
1057 CH3 638 C–H - - 687 C–H
939 CH3 569 Zn–O - - 615 C–H
885 CH2 517 CH2, CH3 - - 558 Zn–O
685 C–H - - - - - -
661 C–H - - - - - -
561 CH2, CH3 - - - - - -
520 CH2, CH3 - - - - - -
Amylopectin ZnO-amylopectin - - - -
3233 C–H 3404 C–H - - - -
2909 C–H 2874 C–H - - - -
1624 C–C 2800 C–H - - - -
1412 OH 1554 CH2 - - - -
1331 CH3 1383 OH - - - -
1215 CH3 1292 CH3 - - - -
1117 CH3 1136 CH3 - - - -
1049 CH3 1096 CH3 - - - -
1013 CH3 978 CH3 - - - -
978 CH3 886 CH2 - - - -
918 CH3 785 C–H
849 CH2 740 C–H - - - -
716 C–H 625 C–H - - - -
661 C–H 565 Zn–O - - - -
569 CH2, CH3 - - - - - -
513 CH2, CH3 - - - - - -
417 CH2, CH3 - - - - - -