Table 3.

5-HMF content of subcritical water extracts obtained from food-by products at 180 and 200 °C

Extraction temperature (°C)	Static extraction time (min)	5-HMF content of artichoke leave (mg/L)	5-HMF content of lemon peel (mg/L)	5-HMF content of flaxseed meal (mg/L)
180	15	42.71 ± 1.17c	115.13 ± 0.93d	47.49 ± 0.11c
180	30	48.90 ± 0.18b	203.39 ± 1.32b	122.73 ± 4.23b
180	45	58.83 ± 0.18a	231.21 ± 3.14a	215.02 ± 13.20a
200	15	44.49 ± 0.10c	181.45 ± 2.76c	222.94 ± 13.67a

Values are means ± standard deviations of three (n = 3) measurements

Values with different superscript letters within a column are significantly different at p < 0.05