Organic Baby Bok Choy. Baby bok choy has dark green, spoon-shaped leaves with wide, light green midribs and mild flavor. Bok choy contains vitamin C, vitamin E, and beta-carotene. These nutrients have powerful antioxidant properties that help protect cells against damage by free radicals. Unlike most other fruits and vegetables, bok choy contains the mineral selenium. Selenium helps to detoxify some cancer-causing compounds in the body. Selenium also prevents inflammation and decreases tumor growth rates.