Abstract
The antioxidative effects of BHT and rosemary on the hydrolysate from skipjack processing byproduct(SPB) was evaluated by storing at $30^{\circ}C$ for 60 days. Each of 0.02% BHT, 0.01% rosemary, and 0.02% rosemary was added into SPB hydrolysate prior to spray drying and the dried powder was tightly sealed in the laminated film(PET/Al foil/CPP, $5\mu\textrm{m}/15\mu\textrm{m}/70\mu\textrm{m})$ bags for storage. The colometric lightness("L") decreased through the storage period in all treatments while the redness ("a") showed the opposite trend. Changes of pigment were higher in level of hydrophillic brown than in lipophilic brown during storage. The effect of antioxidants, by adding BHT and rosemary, showed in TBA and POV during storage. Especially, the 0.02% rosemary treatment was more effective than 0.02% BHT treated SPB having effect of angiotensin converting enzyme(ACE) inhibiting.yme(ACE) inhibiting.
참치 가수분해물을 항산화제인 BHT 0.02% 첨가구와 rosemary 0.01% 및 0.02%를 첨가한 제품을 대조구와 함께 $30^{\circ}C에서$ 저장하면서 검사한 결과 색도에서 대조구 및 항산화제 처리한 4제품 모두 명도는 감소하는 반면에 적색도는 증가하는 경향이었다. 그리고 수용성 갈변물질이 지용성 갈변물질 보다 함량이 많았으며 저장 중 증가폭도 컸다. 지방산화 억제능에서는 0.02% BHT 첨가구 보다 0.02% rosemary 첨가구에서 효과가 있었고, ACE 저해능에서는 생시료에서 3% 미만의 낮은 효율을 보인 반면에 가수분해물에서는 72.2%를 나타내었으며, $IC_{50}$/은 1.124mg이었다.
