Characterization of the Phytochemical Constituents of Taif Rose and Its Antioxidant and Anticancer Activities

Table 2

Total amount of phenolic, flavonoid, and flavonol compounds of 80% methanol extracts, 𝑛-butanol, and aqueous fractions for both fresh and dry Taif rose.

Extract	Total phenolics; (mg gallic acid equivalent/g extract)^1	Total flavonoids; (mg quercetin equivalent/g extract)^2	Total flavonols; (mg quercetin equivalent/g extract)^3
Fresh roses
80% MeOH	61.54 ± 3.88^c	30.94 ± 0.39^c	21.01 ± 0.55^c
𝑛-Butanol fraction	186.84 ± 6.94^e	63.18 ± 0.76^d	34.46 ± 0.58^d
Aqueous fraction	7.73 ± 2.21^a	3.61 ± 0.34^a	3.08 ± 0.10^a
Dry roses
80% MeOH	49.38 ± 1.27^b	24.94 ± 1.25^b	14.20 ± 0.59^b
𝑛-Butanol fraction	177.99 ± 7.25^d	65.59 ± 0.82^e	40.51 ± 0.85^e
Aqueous fraction	7.74 ± 1.91^a	3.74 ± 0.17^a	2.81 ± 0.13^a

Values of SC₅₀, total antioxidant capacity reducing power activity, were expressed as mean of triplicate determinations ± standard deviation (𝑛=3). Values in the same column followed by a different letter (a–e) are significantly different (𝑃<0.05, ANOVA).
¹Total phenolics expressed by mg gallic acid equivalent/g extract.
²Total flavonoids expressed by mg quercetin equivalent/g extract.
³Total flavonols expressed by mg quercetin equivalent/g extract.