Table 2.

Characterisation of the fraction of secondary metabolites of a tincture derived from the bark of Cinnamomum verum J. Presl based on the analysis of five batches (mean and range)

Constituent	Method	Mean	Range
		% (w/w)	% (w/w)
Total polyphenols	Folin–Ciocalteu	0.3440	0.2665–0.3948
Flavonoids	Spectrophotometry	0.0008	0–0.0018
(E)‐Cinnamaldehyde	HPTLC	0.0008	0.0001–0.0012
Methyleugenol	GC‐MS	–	ND#–0.00001

HPTLC: high‐performance thin‐layer chromatography.

^# ND: not detected, lower than 0.00001%, corresponding to 0.1 mg/kg.