What compounds give purple kale its striking hue compared to standard green kale?
Answer
Anthocyanins
The distinct, deep coloration seen in purple kale is attributed specifically to the presence of anthocyanins. These pigments are powerful antioxidants, renowned for their presence in other dark-colored fruits such as blueberries and cranberries. This presence of anthocyanins provides purple kale with an enhanced antioxidant strength profile when contrasted directly with its green counterpart. It is important to recognize that while these compounds contribute significantly to the visual appeal and antioxidant benefits when the kale is raw, they are heat-sensitive, meaning the vibrant purple color often diminishes or transforms into a mix of green and orange upon cooking processes like roasting.
Related Questions
What compounds give purple kale its striking hue compared to standard green kale?Which carotenoid antioxidants in kale actively filter out harmful blue light for vision protection?What nutrient, recommended for increasing intake to maintain healthy blood pressure, is found abundantly in kale?What essential water-soluble antioxidant is required for the body to synthesize collagen?Which two compounds derived from kale's Brassicaceae membership help prevent cancer by blocking formation?What simple technique can be used on raw kale leaves to improve digestibility by breaking down fibrous structure?Individuals taking anticoagulant medications like Warfarin must maintain consistent intake of which abundant kale nutrient?Which flavonoid, found alongside kaempferol in kale, may support heart health and possess anti-inflammatory attributes?Which non-digestible fibers in kale serve as specific food sources for the gut microbiome's beneficial bacteria?Why is kale considered better than other sources for absorbing calcium, especially for those avoiding dairy?