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Changes in Antioxidant Activity of Rehmannia radix Libosch with Heat Treatment

원문정보

Koan Sik Woo, In Guk Hwang, Youn Ri Lee, Junsoo Lee, Heon Sang Jeong, Dae Sik Song

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초록

영어

This study evaluated the effects of heat treatment on antioxidant activity of Rehmannia radix Libosch (RRL). RRLwas heated at various temperatures (110-150oC) for various times (1-5hr), and the total polyphenol, flavonoid content, andantioxidant activity were investigated. With increased heating temperature and exposure time, total content of polyphenol,flavonoid, as well as antioxidant activity increased. The highest total polyphenol and flavonoid contents were 21.65 and 3.56mg/g, respectively, these values were occurred after heating for 3hr at 150oC (RRL was 5.09 and 0.83mg/g, respectively).The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity was highest value of 83.46% after heating for 3 hr at150oC. The 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) cation radical scavenging activity was highest valueof 20.43mg ascorbic acid (AA) eq/g after heating for 2hr at 150oC. There were highly significant differences in the totalpolyphenol, flavonoid content, and antioxidant activity among heating temperatures and times (p<0.001), with heatingtemperature having the greater effect.

목차

Abstract
 Introduction
 Materials and Methods
 Results and Discussion
 References

저자정보

  • Koan Sik Woo National Institute of Crop Science, Rural Development Administration, Suwon, Gyeonggi 441-857, Korea
  • In Guk Hwang Department of Food Science and Technology, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
  • Dae Sik Song Shinwon FI Co., Hwaseong, Gyeonggi 445-944, Korea
  • Youn Ri Lee Department of Food Science and Technology, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
  • Junsoo Lee Department of Food Science and Technology, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
  • Heon Sang Jeong Department of Food Science and Technology, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea

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자료제공 : 네이버학술정보

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