Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Quality and Antioxidant Characteristics of Roasted Maize Tea according to Cultivation Period and Variety

파종시기 및 품종별 볶음 옥수수차의 품질 및 항산화 특성

  • Lee, Ji Hae (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Hyun-Joo (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Mi Jung (Research Policy Bureau, Rural Development Administration) ;
  • Jung, Gun-Ho (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Byong Won (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Byoung Kyu (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Woo, Koan Sik (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
  • 이지혜 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김현주 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 김미정 (농촌진흥청 연구정책국) ;
  • 정건호 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이병원 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 이병규 (농촌진흥청 국립식량과학원 중부작물부) ;
  • 우관식 (농촌진흥청 국립식량과학원 중부작물부)
  • Received : 2017.08.10
  • Accepted : 2017.09.06
  • Published : 2017.11.30
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Abstract

We evaluated the proximate compositions of raw materials, total polyphenols, total flavonoids, and radical scavenging activities of roasted maize tea according to cultivation period and variety. Proximate compositions of raw materials were significantly different according to cultivation period and variety, and quality characteristics of roasted maize tea extracts were significantly different according to cultivation period. Total polyphenols, total flavonoids, and radical scavenging activities of roasted maize tea were significantly different before and after roasting. The total polyphenol content of Pyeonggangok cultivar sown on April 5th was elevated about 3.60-fold before and after roasting by $3.42{\pm}0.16$ and $12.22{\pm}0.67mg$ gallic acid equivalents/g, respectively. Overall, total polyphenol content was higher in roasted maize tea produced using maize sown on April 5th. 1,1-Diphenyl-2-picrylhydrazyl radical scavenging activity of Gangdaok cultivar sown on April 5th was elevated about 31.6-fold before and after roasting by $7.61{\pm}1.93$ and $240.37{\pm}8.82mg$ Trolox equivalents (TE)/g, respectively. 2,2'-Azino-bis-3-ethylbenzothiazoline-6-sulfonic acid radical scavenging activity of Pyeonggangok cultivar sown on April 5th was elevated about 5.5-fold before and after roasting by $153.84{\pm}1.32$ and $843.54{\pm}3.64mg$ TE/g, respectively. The correlation between proximate compositions of raw materials and quality as well as antioxidant characteristics of roasted maize tea showed overall significance.

옥수수차의 기능성을 높일 수 있는 식품가공기술을 개발함으로써 새로운 소비 수요를 창출하고자 국내에서 육성된 옥수수 품종을 파종시기를 달리하여 수확된 옥수수로 볶음차를 제조하여 항산화 성분 및 활성 변화를 살펴보았다. 파종시기 및 품종별 원료곡의 일반성분은 전체적으로 유의적인 차이를 보였으며, 볶음 옥수수차 침출액의 품질특성 또한 전체적으로 파종시기에 따라 유의적인 차이를 보였다. 볶음 옥수수차의 총 폴리페놀 및 플라보노이드 함량은 볶음처리전후 유의적인 차이를 보였다. 4월 5일 파종한 평강옥은 볶음처리 전후에 총 폴리페놀 함량이 각각 $3.42{\pm}0.16$ 및 $12.22{\pm}0.67mg$ GAE/g으로 약 3.6배 증가하였다. 전체적으로 볶음 옥수수차의 총 폴리페놀 함량은 4월 5일 파종한 옥수수를 이용하여 제조한 옥수수차에서 높았다. 볶음 옥수수차의 DPPH 및 ABTS 라디칼 소거 활성은 볶음처리 전후 유의적으로 증가하는 것으로 나타났다. 4월 5일 파종한 강다옥의 DPPH 라디칼 소거 활성은 볶음처리 전후에 각각 $7.61{\pm}1.93$ 및 $240.37{\pm}8.82mg$ TE/g으로 약 31.6배 유의적으로 증가하였다. 4월 5일 파종한 평강옥의 ABTS 라디칼 소거 활성은 볶음처리 전후에 각각 $153.84{\pm}1.32$ 및 $843.54{\pm}3.64mg$ TE/g으로 약 5.5배 유의적으로 증가하였다. 원료의 일반성분과 볶음 옥수수차의 품질특성, 항산화 성분 및 활성 간의 상관성은 전체적으로 유의성을 보였다.

Keywords

References

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