한국식품영양학회지 (The Korean Journal of Food And Nutrition)

  • 제27권6호
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  • Pages.1051-1058
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  • 2014
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  • 1225-4339(pISSN)
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  • 2287-4992(eISSN)
한국식품영양학회 (The Korean Society of Food and Nutrition)
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유자의 종류별 수확시기에 따른 유리당, 헤스페리딘, 나린진, 플라보노이드 함량과 항고혈압 활성 변화

The Change of Free Sugar, Hesperidine, Naringin, Flavonoid Contents and Antihypertensive Activities of Yuza Variety according to Harvest Date

  • 투고 : 2014.08.19
  • 심사 : 2014.11.01
  • 발행 : 2014.12.31
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초록

재래유자(C. junos I), 개량종 I(C. junos I+Poncirus trifoliata), 개량종 II(Citrus junos I+C. junos II) 세 가지 유자의 종류별 수확시기에 따른 유리당, 헤스페리딘, 나린진, 플라보노이드 함량과 항고혈압 활성을 알아보고자 실험을 수행하였다. 수확시기가 늦을수록 산도는 감소하고 당도는 증가하여 당산비는 증가하였고, 포도당, 서당은 수확시기에 따른 변화가 크지 않았으나, 과당은 유자가 충분히 익는 11월에 급격히 증가함을 보여주었다. 개량종 II는 10월 수확한 과피에서, 재래종은 10월 수확한 과즙에서 다른 품종보다 총 플라보노이드가 높았으며, 유자 과피의 hesperidin과 naringin은 유자가 미성숙했을 시기인 7월에 가장 높았고, 급격히 감소하고 있었다. 총 플라보노이드 중에서 hesperidin과 naringin이 차지하는 비율도 미숙과인 7월보다 11월에 현저히 감소하는 것으로 나타났다. ACE 저해 효과는 과즙과 과피에서 모든 수확시기에서 높게 나타났다. 과즙보다 과피에서 높게 나타났으며 품종별, 수확 시기별 차이는 관찰되지 않았으나 제철 11월에 수확한 재래종 과피에서 ACE 저해 효과가 가장 높았다. 따라서 hesperidin과 naringin을 이용하고자 할때는 미숙과를, 당도나 ACE 저해 효과를 이용하고자 할 때는 완숙과를 이용하는 것이 타당할 것으로 보인다.

Yuza (Citrus junos) had 3 varieties and they had variable physiochemical properties. This study analyzed free sugar, hesperidine, naringin, flavonoid contents and antihypertensive activities according to variety and harvest time of Yuza. Three Yuza varieties, native (C. junos I), improved I (C. junos I + Poncirus trifoliata), improved II (C. junos I + C. junos II) were used. Harvest time could influence biochemical properties of Yuza such as acidity and $^{\circ}brix$. When the Yuza harvested at behind of season, the sugar/acid ratio went up because the acidity was decreased but sugar content was increased. Fructose content was dramatically high at November, Yuza of the season. Total flavonoids was high in pulp parts of improved II and in juice of native one harvested at October. The content of hesperidin and naringin in peels and juices were high in immature fruits fresh-picked at July since then they were decreased steadily and there were no difference according to varieties. The angiotensin converting enzyme (ACE) inhibition was powerful at pulp of Yuza in particular native one picked at November.

키워드

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