“…Quercetin is a kind of natural polyhydroxy flavonoid that is found in various foods and plays a role in improving several diseases, such as diabetes, inflammation, and allergies (Hu, Lin, Zheng, & Cheung, ; Kee et al, ; Lin et al, ; Shen, Dang, et al, ; Shen, Lee, et al, ; Wang, Hu, et al, ; Wang, Hu, et al, ; Wang, Lam, et al, ; Wang, Lam, et al, ). Quercetin has a clear antagonistic effect on many kinds of malignant tumors (Kim et al, ) and can affect precancerous lesions of colon cancer by inhibiting the release of inflammatory factors (Miyamoto, Yasui, Ohigashi, Tanaka, & Murakami, ).…”