Table 1.

Percentage of vit. D2 retention after thermal treatment at 75 ℃ for 2 h in the dark. Number of repetition for each treatment: n = 3. The data are represented here as the mean ± S.D, where *p < 0.05, **p < 0.01, ***p < 0.001, vit. D2 (5 μg) vs vit. D2 (5 μg) + quercetin (1 μg), vit. D2 (5 μg) vs vit. D2 (5 μg) + quercetin (2 μg), vit. D2 (5 μg) vs vit. D2 (5 μg) + quercetin (5 μg), vit. D2 (5 μg) vs vit. D2 (5 μg) + quercetin (10 μg). Statistical significance analysis was carried out through one-way analysis of variance (ANOVA) prism.

Vitamin and quercetin	75 °C, 2 h(% of vit. DD2 retention)
Vit D2 (5 μg)	49.56 ± 6.38
Vit D2 (5 μg) + Quercetin (1 μg)	72.77 ± 5.22
Vit D2 (5 μg) + Quercetin (2 μg)	79.23 ± 5.81
Vit D2 (5 μg) + Quercetin (5 μg)	86.74 ± 7.36
Vit D2 (5 μg) + Quercetin (10μg)	87.32 ± 3.65