Evaluation of antioxidant activity of kale extracts by means of SFE method

Abstract

Human organism needs nutrients which are able to protect from cancer, diseases or to fast ageing . All nutrients are assimilated only from food and drinks so it is very important to remember about them during composing daily menu. One of these nutrients is lutein that exists only in plants, as a yellow pigment. In human health it plays much more important roles. Lutein is considered as very strong antioxidant, that can destroy free radical. What is connected with that, lutein can protect eye and skin. High concentration of lutein can be found in retina, where it works as a filter from blue and UV light and as a antioxidant that scavenning photo-induced free radicals that can be produced in high amount because of wide exposition of retina on light [1]. Similar protection(as lutein filter), found in skin, reduces risk of skin cancer. Also it plays a protective role from cataract and AMD ( Age-related Macular Degeneration), that is very problematic, in nowadays, diseases, and high intake of lutein can reduce risk even about 50% [1]. Its next important role is reducing a risk of cardiovascular diseases, as atherosclerosis (because it prevents oxidation of High Density Lipoprotein to Low Density Lipoprotein) [2, 3]. [...]