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Nitrogen Stress가 적양배추(Brassica oleracea)의 callus분화 및 Anthocyanin 함량변화와 항산화 활성에 미치는 효과
예다인,김혜림,김효정,최문정,김초록,김영지,이지현,구민성,정 강현,이인순,문혜연 대구대학교 산업기술연구소 2012 産業技術硏究 Vol.23 No.1
In order to study on the effects of antioxidant activity, changing concentration of anthocyanin and callus formation of Brassica oleracea by nitrogen stress experimented callus culture in MS medium with 0.1 ㎎/ℓ IAA, 0.2 ㎎/ℓ kinetin and 0∼5 mM KNO3. As medium showed differentiation of callus and the pigmental deposit like red color inside callus tissue. We extracted functional material from natural leaf and callus tissue of Brassica oleracea to use 70% ethanol as solvent and those extract used to determine antioxidant activity as 1, 1-diphenyl-2-picryl-hydrozyl (DPPH) radicals scavenging effect and nitric oxide radical scavenging effect as well as the concentration of total phenol and flavonoid. Additionally, we measured the concentration of anthocyanin and catalase activity from natural and callus tissue. In result, M1 had over 35% anthocyanin concentration, 1.7 times catalase activity and 20% DPPH activity compared with control. MC, M2 and M3 also showed 50% DPPH activity compared with positive control, BHT. However, more natural tissue than callus tissue cultured with nitrogen source had high effect on nitric oxide radical scavenging and the concentration of phenol compound, flavonoid and vitamin C. As a result, nitrogen source brought hypersensitivity in callus tissue of Brassica oleracea, so this reaction only induced to change color of callus tissue, pigment deposit for culture and also increase anthocyanin concentration, DPPH activity. Therefore, natural tissue of Brassica oleracea is good food for anticancer and detoxification and it has high concentration of functional compound.