Table 1.
Total tanin, flavonoid, and phenolic contents of sweet potato leaves at various drying temperatures

Cultivars Temp. (°C) Total tanin (mg/g) Flavonoids (mg/g) Total phenolics (mg GAE/g)
Shinmi 40 10.87±0.10b1) 55.18±0.40a 69.98±1.37b
50 9.62±0.26d 42.01±1.12c 51.53±1.09c
60 7.89±0.36fg 30.67±0.06e 31.19±1.12f
70 7.28±0.14g 25.21±0.30f 27.93±1.17g
Hayanmi 40 12.37±0.57a 55.37±1.10a 85.10±0.72a
50 10.17±0.17c 46.67±1.30b 71,72±0.85b
60 9.00±0.30de 40.73±0.44cd 41.93±0.75d
70 8.26±0.45ef 39.63±0.87d 38.75±1.40e
Means±SD (n=3) in a row followed by same letter are not significantly different by Duncan’s multiple range test (p<0.05).