Carbohydrate Research p. 1 - 7 (2016)
Update date:2022-08-18
Topics:
Shiomi, Norio
Abe, Tatsuya
Kikuchi, Hiroto
Aritsuka, Tsutomu
Takata, Yusuke
Fukushi, Eri
Fukushi, Yukiharu
Kawabata, Jun
Ueno, Keiji
Onodera, Shuichi
Eight kestose isomers were isolated from sugar beet molasses by carbon-Celite column chromatography and HPLC. GC-FID and GC-MS analyses of methyl derivatives, MALD-TOF-MS measurements and NMR spectra were used to confirm the structural characteristics of the isomers. The 1H and 13C NMR signals of each isomer saccharide were assigned using COSY, E-HSQC, HSQC-TOCSY, HMBC and H2BC techniques. These kestose isomers were identified as α-D-fructofuranosyl-(2-> 2)-α-D-glucopyranosyl-(1 < ->2)-β-D-fructofuranoside, α-D-fructofuranosyl-(2-> 3)-β-D-fructofuranosyl-(2 < ->1)-α-D-glucopyranoside, α-D-fructofuranosyl-(2-> 4)-β-D-fructofuranosyl-(2 < ->1)-α-D-glucopyranoside, β-D-fructofuranosyl-(2- > 4)-β-D-fructofuranosyl-(2 < ->1)-α-D-glucopyranoside, β-D-fructofuranosyl-(2- > 3)-α-D-glucopyranosyl-(1 < ->2)-β-D-fructofuranoside, α-D-fructofuranosyl-(2- > 1)-β-D-fructofuranosyl-(2 < ->1)-α-D-glucopyranoside, α-D-fructofuranosyl-(2- > 6)-α-D-glucopyranosyl-(1 < ->2)-β-D-fructofuranoside, and α-D-fructofuranosyl-(2- > 6)-β-D-fructofuranosyl-(2 < ->1)-α-D-glucopyranoside. The former five compounds are novel saccharides.
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