The genus Cinnamomum

112 U.M. Senanayake and R.O.B. Wijesekera
Yazaki and Okude (1990) reported that callus and suspensions cultures of C. cassia
produced large amount of condenced tannin. They have isolated (–)-epicatechin and
procyanidins B2, B4 and C1, which are precursors of condensed tannins, from callus
cultures.
Cinnamon bark contains a significant amount of mucilaginous substances, which consists
mainly of a water-extractable L-arabino-D-xylan and an alkali extractable D-glucan.
Gowda and Sarathy (1987) studied the nature of the arbinoxylan from cinnamon bark.
The arabinoxylan is composed of L-arabinose and D-xylose in the molar ratio 1.6:1.0. It
contained a (1 : 4)-linked -D-xylan backbone in which each D-xylopyranosyl residue
is substituted at both 0–2 and 0–3 with L-arabinofuranosyl, 3–0--D-xylopyranosyl-Larabinofuranosyl
and 3–0-L-arabinofuranosyl-arabinofuranosyl-L-arabinofuranosyl
groups.
References
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Gowda, C. and Sarathy, C. (1987) Structure of an L-arabino-D-xylan from the bark of
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