• Current Research on Agriculture and Life Sciences
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• 제31권2호
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• pp.101-107
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• 2013

This study was undertaken to determine free radical scavenging capacity and oxidative DNA damage protecting activity of methanol extract of red tea stem. The extract was subjected to assess their antioxidant potential using various in vitro systems such as $DPPH^{\bullet}$, $ABTS^{{\bullet}+}$, super oxide and nitric oxide free radicals and it exhibited $IC_{50}$ values of $68.88{\pm}1.1$, $12.08{\pm}0.65$, $404.38{\pm}1.6$, $93.6{\pm}2.7{\mu}g/mL$ respectively. Red tea extract also showed ferric reducing ability (FRAP) with 2606.85 mmol Fe (II)/g of extract. Furthermore, Methanol extract of red tea stem showed significant DNA damage protecting activity in concentration dependent manner against $H_2O_2+UV$ induced photolysis on pUC19 plasmid DNA. Results of this study showed that the methanol extract of Red Tea stem has strong antioxidant potential along oxidative DNA damage protecting capacity that would be the significant sources of natural antioxidants, which might be helpful in preventing the progress of various oxidative stress generated diseases. Further study is necessary for isolation and characterization of the active antioxidants, which may serve as a potential source of natural antioxidant.

• 한국식생활문화학회지
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• 제18권4호
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• pp.379-395
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• 2003

Regional foods is influenced by weather, local and social environment etc. The purpose of this study was to understand that regional foods in the middle of Chosun Dynasty through Domundaejac. Some of representative dishes of the Hansung and Kyonggi-do Area is duck(rice cake) of seasonally celebrated days, hangua(korea confectionary) and rice wine. Typical foods in Chungchong-do Area is included persimmon, jujube, watermelon and wax gourd. Some of the well-known food in Kangwon-do Area is pear, bangpungchuk(gruel), sukebyung(rice cake), woongjijunggua(korea confectionary) and sanat-kimchi(picked mustard leaves and stem) that is seemed characteristics of mountainous section. Some of the famous dishes in Cholla-do Area is backsanja(korea confectionary), tea, chuksun kimchi(bamboo shoot pickle), citrus fruits and ear shell. Kyongsan-do Area ia famous persimmon, bamboo fruit, dasik(korea confectionary) and yakban(glutinous rice cake). Hwanghae-do Area is famed pear and choshi as assumed the eatly form of gochujang(thick soypaste mixed with red pepper). Representative dishes are deljjuk(blue berry), herring, sangat-kimchi(picked mustard leaves and sterm) in Hamgyong-do Area and daemandu(big dumpling) in Pyongan-do Area. The coast area is famous for using lots of sea food. Fresh seafood is consumed raw, and clams, fish and seaweed are liberally added to soups and other dishes. The East coast is catched salmon, flatfish, codfish, sandfish and mackerel The West coast is catched yellow corvenia, lobster, tiny shrimp and large-eyed herring. The South coast is catched sea mussel, codfish and laver.

• 농약과학회지
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• 제15권1호
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• pp.36-47
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• 2011

2010년 서울 강북지역에서 유통되고 있는 농산물에서 내분비 장애추정농약의 노염상태를 조사하기 위해서 실행되었다. 우리는 총 3,081건의 농산물에서 내분비 장애추정농약 33종을 동시다성분 방법으로 분석하였다. 12종의 농약이 600회 검출되었고 22회 부적합하였다. 검출빈도가 가장 높은 농약은 procymidone이었고 부적합 빈도는 endosulfan가 가장 높았다. 검출빈도 대비 부적합빈도가 높은 농약은 diazinon이었다. 농산물별로는 466건에서 농약이 검출되었고 22건이 최대잔류 허용기준에 부적합하였다. 농산물은 유형별로 분류되었고 기타 유형에 속한 고춧가루의 검출률이 70.7%로 가장 높았고 과채류은 35.3%, 차류는 23.6%, 엽경채류는 21.2%, 과실류는 14.6%, 엽채류는 11.2%였다. 부적합율은 엽경재류와 엽채류, 근채류가 각각 1.0%, 1.1%, 0.4%였다. 부추가 주요 관리대상 농산물로 검출률 및 부적합율이 높았고 여러 농약이 함께 검출되었다.