Table 2.
Total flavonoid and total polyphenol contents of the onion peel extracts according to the extraction method
| Measurement | AE1) | LTPE2) | RE3) | SE4) |
| Polyphenols (mg GAE5)/g) | 209.99±7.087)a8) | 176.01±3.18b | 178.24±3.89b | 140.14±5.88 |
| Flavonoids (mg RHE6)/g) | 25.00±0.57a | 20.32±0.80c | 23.30±0.36b | 20.09±0.10c |
AE, autoclave extraction; LTPE, low temperature high pressure extraction; RE, reflux extraction; SE, stirrer extraction.
GAE, gallic acid equivalents; RHE, rutin hydrate equivalents.
Values are mean±standard deviation of triplicate determinations.
Different superscripts within a row (a-d) indicate significant differences (p<0.05)