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All issues Volume 10 (2018) BIO Web Conf., 10 (2018) 02008 Full HTML
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Table 2.

Location of maxima of absorption bands FTIR [12-13, 29, 31-34], together with the assignment of appropriate vibration for selected honeys: buckwheat, multifloral, sunflower, linden, and honeydew honey made in terms of spectral 3700-900 cm-1.

FTIR Type and origin of vibrations
Position of bands [cm-1]
Buckwheat Multifloral Sunflower Linden Honeydew
3340 3327 3335 3325 3343 V (O-H) in H2O
2937 2941 2932 2921 2931 V (C-H) or/and V (NH3) of free amino acids
2888 2879 2875 2882 2887
1646 1643 1640 1644 1646 5 (O-H) from H2O
1455 1456 1451 1453 1454 5 (O-CH) and 5 (C-C-H)
1415 1420 1408 1418 1417 5 (O-H) in C-OH group + 5 (C-H) in the alkenes
1347 1345 1344 1347 1342 5 (-OH) in C-OH group
1249 1256 1253 1253 1259 v (C-H) in carbohydrates or/and v (C-O) in carbohydrates
1189 1186 1193 1189 1189
1143 1145 1145 1153 1148 v (C-H) in carbohydrates or/and v (C-O) in carbohydrates
1101 1101 1102 1103 1105 v (C-O) in C-O-C group
1078 1080 1076 1080 1079
1055 1056 1056 1056 1055 v (C-O) in C-OH group or v (C-C) in the carbohydrate structure
1033 1032 1032 1033 1033
1014 1011 1012 1017 1014
981 981 978 985 982
966 966 964 976 964
917 917 923 933 920 5 (C-H)
895 897 894 897 892 anomeric region of carbohydrates or 5(C-H)
866 866 866 868 861
844 830 839 846 839
819 815 814 816 820

ν– stretching vibrations, δ – deformation vibrations, s – symmetric, as – asymmetric, st – strong, denotes frequencies that may originate from the solvent used*

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