Table 1.

The contents of phenolics in buckwheat honey samples from different geographical origins (μg/100 g honey).

Samples (μg/100 g honey)	S1	S2	S3	S4	S5	S6	S7	S8
Benzoic acid	82.64	98.06	77.16	147.52	68.62	89.73	45.32	—
cis,trans-Abscisic acid	111.08	64.23	66.02	81.41	40.44	44.42	64.95	489.31
Gallic acid	109.55	182.15	83.65	150.52	63.47	66.17	38.25	—
Isoferulic acid	152.64	—	6.91	35.97	40.56	88.27	—	—
Methyl syringate	30.66	—	93.74	138.52	2.89	68.12	—	237.52
p-Coumaric acid	316.01	221.86	180.42	303.35	54.99	76.71	423.52	265.95
Ferulic acid	53.25	72.11	73.69	76.35	0.48	23.81	74.4	45.67
Protocatechuic acid	265.47	462.96	352.64	379.52	84.24	75.27	451.52	139.41
trans,trans-Abscisic acid	66.69	70.42	58.52	61.51	28.77	39.92	65.01	402.41
Vanillin	41.76	24.96	63.52	107.35	29.86	53.96	46.15	—
4-Hydroxybenzaldehyde	1092.35	564.04	1081.73	734.41	464.33	322.52	55.81	223.41
4-Hydroxy benzoic acid	65.79	275.43	188.89	231.21	43.22	48.58	72.96	64.25

Note. Average calculated from two independent analyses. (—): not detected. Sample 1 from Mongolia, sample 2 from Heilongjiang, sample 3 from Heilongjiang, sample 4 from Liaoning, sample 5 from Jilin, sample 6 from Henan, sample 7 from Shanxi, and sample 8 from Beijing.