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Enhancement of Antioxidant Activity of Onion Powders by Browning during Drying Process
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Enhancement of Antioxidant Activity of Onion Powders by Browning during Drying Process

논문 기본 정보

자료유형
학술저널
저자정보
Dong-Jin Lee (고려대학교) Jung-Ah Han (상명대학교) Seung-Taik Lim (고려대학교)
저널정보
한국식품과학회 한국식품과학회지 한국식품과학회지 제48권 제1호 KCI등재 SCOPUS
발행연도
2016.2
수록면
15 - 19 (5page)

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연구결과
Enhancement of Antioxidant Activity of Onion Powders by Browning during Drying Process
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초록· 키워드

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Drying process was applied to increase the antioxidant activity of onion powder: freeze-drying or air-drying at 50, 70, and 90°C and onion extracts were obtained from each powder using water or aqueous ethanol (50%) at 25°C and 60°C. In the color analysis, the freeze-dried powders showed higher L* and lower a* and b* values than did the air-dried ones. The browning index of powders air-dried at 90°C was significantly higher than that of freeze-dried powders or those air-dried at temperatures below 90°C. Phenolic content in the extracts was 4.02-23.12 mg gallic acid equivalent/g sample, and was the highest in the extract from the sample air-dried at 90°C, regardless of the extraction condition. The highest antioxidant activity, measured by 2,2-azinobis-3-ethylbenzothiazoline-6-sulfonic acid and 1,1-diphenyl-2-picrylhydrazyl methods, was found in the powder air-dried at 90°C, which induced browning. These findings indicate that antioxidant activity depends more on browning during drying than on extraction conditions.

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2016-594-002650464