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Carnosic acid and carnosol, a derivative of the acid, are used as antioxidant preservatives in food and nonfood products, where they’re labelled as “extracts of rosemary” (E392). Is rosmarinic acid a flavonoid? Rosmarinic acid (RA) (Figure 4.13) is a polyphenolic antioxidant hydroxycinnamic acid found in many Lamiaceae herbs and widelyRead More →