퀴노아의 품질특성 및 생리활성에 대한 로스팅 온도의 영향 = Effects of Roasting Temperature on Quality Characteristics and Biological Activity of Quinoa

다국어 초록 (Multilingual Abstract)

The present study aimed to evaluate the effects of roasting temperature on the quality characteristics and biological activity of quinoa. Quinoa was roasted at 160, 200, and 220℃ for 20 min. The lightness (L^*) of quinoa decreased, however, the redness (a^*) increased as the roasting temperature increased. The yellowness (b^*) was the highest at 160℃ and decreased at 200 and 220℃. The highest contents of total polyphenol, flavonoid, and quercetin were observed at 220℃, the highest roasting temperature. The highest radical scavenging activities of 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (73.65%) and α,α-diphenyl-β-picrylhydrazyl free radicals (47.82%) were found in roasted quinoa at 220℃. The α-glucosidase activity was inhibited by 62.13% at this temperature. The roasted quinoa at 220℃ also showed a significant cytoprotective effect against oxidative stress in HepG2 cells. These results could be useful in the development of food products using quinoa.

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