citric acid: a weak water-soluble acid found in many fruits (especially citrus fruits); used as a flavoring agent
acid: any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
alpha-linolenic acid: a polyunsaturated fatty acid with 18 carbon atoms; the only omega-3 fatty acid found in vegetable products; it is most abundant in canola oil; a fatty acid essential for nutrition