Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Studies On the Major Components and Antioxidative Properties of Whole Fruit Powder and Juice Prepared from Premature Mandarin Orange

미숙 온주밀감을 이용한 통 밀감 분말과 착즙액의 성분함량 및 항산화성에 관한 연구

  • Kang, Yeung-Joo (Department of Food Bio Science and Engineering, Cheju National University) ;
  • Yang, Min-Ho (Department of Food Bio Science and Engineering, Cheju National University) ;
  • Ko, Weon-Jun (Department of Food Bio Science and Engineering, Cheju National University) ;
  • Park, Seung-Rim (Gunpoong Bio) ;
  • Lee, Bong-Gyu (Department of Computer Science and Statistics, Cheju National University)
  • 강영주 (제주대학교 식품생명공학과) ;
  • 양민호 (제주대학교 식품생명공학과) ;
  • 고원준 (제주대학교 식품생명공학과) ;
  • 박승림 (건풍바이오) ;
  • 이봉규 (제주대학교 전산통계학과)
  • Published : 2005.10.31
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Abstract

Major components and antioxidative properties of whole fruit powders and juices prepared from premature mandarin, Citrus unshu, were investigated. Dietary fiber, flavonoid, and organic acid contents greatly increased in samples with lower degree of fruit maturity (August) than higher ones (October), and in whole fruit powders than extracted juices, whereas free sugar contents, especially sucrose content, increased in fruits with higher degree of maturity than lower ones. Antioxidative properties were not affected by degree of fruit maturity, whereas total polyphenol content and electron-donating abilities were higher in extracted juices than whole fruit powders. Nitrite-scavenging abilities of all samples were similar except at pH 6.0.

매년 제주지역에서 적과에 의하여 발생하는 미숙과 5-10만톤을 자원화하기 위하여 8, 9, 10월에 수집된 미숙감귤을 마쇄한 후 전자파 가열건조한 통 밀감 분말과 착즙 액에 대하여 적과 시기별 일반성분, 식이섬유, 유리 당, 유기산, flavonoid 분석을 하였다. 숙도가 높을수록 미숙감귤분말의 지방, 회분, 단백질, 총산은 감소하였으나 환원당 함량은 증가하였다. 식이섬유는 총 식이섬유(TDF)가 8월 53.1%, 9월 49.7%, 10월 39.9%로 함량이 높으며, 중성 식이섬유(NDF), 산성 식이섬유(ADF)의 경우도 숙도가 낮을수록 함량이 높았고 착즙 액은 모두 1% 이내로 적었으며 시기별 차이도 뚜렷치 않았다. Flavonoid는 미숙감귤분말의 narirutin과 hesperidin이 각각 8월 1317.8mg% 및 6129.5mg%에서 10월 881.0mg% 및 44221.2mg%로 감소하였으며 neohesperidin은 거의 검출되지 않았다. 유리 당은 숙도가 높을수록 함량이 높아·졌으며 8월의 경우 glucose>fructose>sucrose순이었으나, 10월로 갈수록 sucrose>fructose>glucose순으로 변하였다. 유기산은 미숙감귤분말의 경우 citric acid가 8월 27.86%에서 10월 11.41%로 낮아졌고 ascorbic acid는 0.081%에서 0.12%로 미량이지만 과실이 익어갈수록 높아졌으며 착즙액도 길은 경향을 보였다 총 polyphenol과 전자공여작용은 미숙감귤분말과 착즙 액이 각각 8월 21.7mg%과 78.2mg% 및 44.2% 및 61.6%로 숙도가 낮을수록 높은 경향을 보였다. 8월 미숙감귤분말 추출액과 미숙감귤 착즙 액의 각각 아질산염소거작용은 8월 미숙감귤분말의 경우 pH 1.2에서 57.2%의 비교적 높은 소거 능을 보였다. 따라서 미숙 통밀감 분말은 식이섬유 및 flavonoid 소재원으로 이용 가능성이 있다.

Keywords

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