• Title/Summary/Keyword: wild duck

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Evaluation of the Antioxidant Activity of Wheat Sprouts Produced by Different Cultivation Methods and Harvest Times (새싹밀의 재배방법과 수확시기에 따른 항산화 성분 및 활성 평가)

  • Yang, Ji Yeong;Song, Seung-Yeob;Seo, Woo Duck;Lee, Mi Ja;Kim, Hyun Young
    • The Korean Journal of Food And Nutrition
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    • v.34 no.6
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    • pp.584-592
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    • 2021
  • In this study, the antioxidant activity of methanol extracts of wheat sprouts grown in wild fields and cultivated fields and harvested at various times were analyzed to compare the quality characteristics of the wheat sprouts as a function of their cultivation and harvest time, as well as for the development of functional materials. The total polyphenolic and flavonoid content, as well as antioxidant activity of the wheat extracts, were subsequently analyzed. The ABTS radical scavenging activity of the wheat extract increased from 16.97 mg TEAC/g sample on cultivation day three in cultivated field wheat sprouts to 25.99 mg TEAC/g sample after seven days of wild field cultivation. The total polyphenol content increased from 17.08 mg GA eq/100 g in cultivated field wheat sprouts grown for three days to 28.70 mg GA eq/100 g after seven days of wild field cultivation. In addition, the flavonoid content increased from 7.02 mg catechin eq/100 g (7 days) to 8.47 mg/g after 12 days of wild field cultivation. Notably, the activity subsequently decreased. These results suggest that the wheat sprouts with higher biological activity were those produced from the wild field after 20 days.

Dirofilaria immitis infection in wild raccoon dogs, Nyctereutes procyonoides (야생너구리 (Nyctereutes procyonoides)의 개 심장사상충 (Dirofilaria immitis) 감염)

  • Song, Kun-Ho;Lee, Il-Berm;Kim, Duck-Hwan
    • Korean Journal of Veterinary Research
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    • v.42 no.4
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    • pp.545-550
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    • 2002
  • The raccoon dog (Nyctereutes procyonoides) may be infected by Dirofilaria immitis. However, there has been no report on dirofilarial infection in the raccoon dog in Korea. In this study, we report on D. immitis infection in two wild raccoon dogs captured in the Daejeon area. The two raccoon dogs were referred to the Veterinary Teaching Hospital, Chungnam National University for diagnosis of D. immitis infection. The modified Knott's test for the detection of blood D. immitis microfilariae was positive, and serological test (FASTest$^{(R)}$ HW Antigen ELISA kit, Diagnostik Mega Cor, Austria) for D. immitis was positive as well. Additionally, D. immitis microfilariae were differentiated from other microfilariae by using acid phrnphatase histochemical staining (Leucognost-SP$^{(R)}$kit, Diagncstica MERCK, Germany). The two raccoon dogs were necropsed and D. immitis infection was confirmed.

Antibacterial Activities of Methylelaiophylin (Methylelaiophylin의 항균활성)

  • Lee, Dong-Sun;Lee, Sang-Han;WOO, Ju-Hyung;Lee, Jin-Man;Seu, Young-Bae;Hong, Soon-Duck
    • Journal of Life Science
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    • v.7 no.3
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    • pp.180-185
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    • 1997
  • Methylelaiophylin generated superoxide radicals in Bacillus subtilis and showed antibacterial activity against a broad range of gram positive bacteria. The inhibition of DNA synthesis was more sensitive than one of RNA synthesis. A recombination-deficient mutant strain of B. subtilis was 2-fold more sensitive than a wild strain, and this sensitivity was reduced in the presence of an antioxidant, dithiothreitol. Methylelaiophylin generated superoxide radicals in B. subtilis lysates, and this suggests that the antibacterial activity of methylelaiophylin is related to the generation of active oxygen species in the cells.

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Trace Metal Contents in Cultured and Wild fishes from the Coastal Area of Tongyeoung, Korea and their Safely Evaluations (통영연근해역 양식산 및 자연산 어류 중의 미량금속 함량 및 안전성 평가)

  • Choi Jong-Duck;Jeoung In-geon
    • Journal of Food Hygiene and Safety
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    • v.20 no.4
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    • pp.205-210
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    • 2005
  • The content of the trace metals in the cultured and wild fishes were determined. The tested fishes were genuin porgy (Pagrus major) and black porgy (Acanthopogrus schlegeli). The samples of the cultured and wild fishes were collected from slices of raw fish in shops, during 2003 to 2004. The samples were digested with acids, then analyzed by ICP (inductively Coupled plasma Spectrometer) and AAS (Automic Absorption Spectrometer) for the content of lead (Pb), cadmium (Cd), arsenic (As), copper (Cu), manganese (Mn) and zinc (Zn). The content of mercury (Hg) was determined using mercury analyzer. The mean contents of trace metals in cultured and wild fish was 0.031,0.047mg/kg far total-mercury,0.321,0.407 for Pb, 0.048,0.063 for Cd, 1.006, 1.132 for As, 0.467,0.806 for Cu, 0.233, 0.293 for Cr, 9.69, 12.20 for Zn,0.798, 0.624 mg/kg far Mn, respectively. The content of all the trace metals except manganese in wild fish was more than that in cultured fish. The highest level of total-mercury, lead, cadmium, zinc, chromium and arsenic in the samples analyzed were all below the quarantine limit of Korean regulation and guideline established by the U.S. Food and Drug Administration f3r human consumption. The level of the trace metals in the samples was negligible, which could be endogenous. Our data obtained in this study showed that the average weekly intakes of lead, cadmium and mercury from cultured and wild fishes takes about $6\∼13\%$ of Un(Provisional Tolerance Weekley Intakes) that FAO/WHO Joint Food Additive and Contaminants Committee has set to evaluate their safeties.

Phylogenetic Analysis using mtDNA D-loop Sequences in Korean Native Ducks (mtDNA D-loop 염기서열 변이를 이용한 토종오리의 계통 분류)

  • Choi, Nu Ri;Seo, Dong Won;Jin, Seon Deok;Sultana, Hasina;Heo, Kang Nyeong;Lee, Jun Heon
    • Korean Journal of Poultry Science
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    • v.41 no.4
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    • pp.235-240
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    • 2014
  • Recently, the consumption of duck meat has been gradually increased in Korea. However, most of the duck breeds in Korea were imported from overseas. Based on the large demands for the breeding stocks of native ducks, a new project for the commercial use of the Korean native ducks has been launched. For the initial investigation of the relationships between Korean native duck (KND) with other duck breeds, the sequences from D-loop control region in mitochondrial DNA (mtDNA) was used. The results from phylogenetic analysis indicated that both KND and White Commercial Duck (WCD) breeds were classified well with wild duck breeds. However, mallard duck was not discriminated well with KND. The haplotype analysis indicated that KND and WCD have eight different haplotypes with eleven SNPs. Three haplotypes (haplotype 1, 3, 4) were shared both in KND and WCD. On the other hand, haplotype 1 was appeared only KND and haplotype 5, 6, 7, 8 were identified only in WCD population. With further verifications, the results presented here can be used for the conservation and commercialization of the Korean native ducks.

Chemical Composition of Cultured and Wild Codonopsis lanceolata Roots of Different Age Groups -II. Separation of the Lipid Fractions- (더덕(沙蔘)의 년근별(年根別) 화학성분(化學性分)에 관(關)한 연구(硏究) -제2보(第2報) : 지질분획(脂質分劃)의 분리(分離)-)

  • Park, Boo-Duck;Park, Yong-Gone;Choi, Kwang-Soo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.14 no.3
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    • pp.280-283
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    • 1985
  • Lipid fractions of the roots of cultured (five years old) and wild (eight years old) Codonopsis lanceolata were analyzed. The most abundant fraction of the lipids extracted from cultured and wild roots of C. lanceolata was neutral lipid and the next came phospholipid and glycolipid in descending order. The percentage, however, of the neutral lipid in total lipid was comparatively low, while that of phospholipid, particularly high; 41.30% and 29.34% in that of cultured and wild one respectively. The richest fraction of neutral lipid was triglyceride; 39.49% and 32.88% in the cultured and the wild respectively, and followed by sterol esters and free acid. Noticed amounts of sterol esters and monoglycerides which is able to be used as an emulsifiers, were contained in the neutral lipid of roots; 27.74% and 5.11% respectively. The unsaturated fatty acid fraction of the total lipid hydrolyzate contained in cultured and wild C. lanceolata roots was 72.87% and 74.37% respectively. The main fatty acid contained in the total lipid hydrolyzate was linoleic acid, and followed by linolenic acid palmitic acid. The main saturated fatty acid was palmitic acid and lauric acid.

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Growth Pattern and Content of Tropane Alkaloids of Metabolic Engineered Scopolia parviflora Hairy Root Lines

  • Kang, Young-Min;Min, Ji-Yun;Kim, Won-Jung;Kim, Yong-Duck;Lee, Byung-Hynn;Choi, Myung-Suk
    • Korean Journal of Medicinal Crop Science
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    • v.12 no.2
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    • pp.123-128
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    • 2004
  • Hyoscyamine and scopolamine are two most common tropane alkaloids found in the Solanaceae. The pEB expression vector carrying Nspmt gene was transformed to Agrobacterium rhizogenes. The growth of transgenic hairy roots were approximately to 80% of the wild type root. Transgenic hairy roots are less developed on only their branch roots than those of the wild type root. The extracts from Nspmt transgenic hairy root lines, 3 and 5 contained between 3.52 and 4.23 mg/g dry weight as hyoscyamine and did between 5.23 to 6.40 mg/g dry weight as scopolamine. These results showed that the overexpression of the pmt gene enhanced tropane alkaloids production of S. parviflora transformed roots and this improvement affected both hyoscyamine and scopolamine production.

A Study of Wedding Feast Dishes in Gare Dogam Euigwae (1651, 1696) (가례도감의궤(嘉禮都鑑儀軌)에 나타난 1600년대(年代)의 조선왕조(朝鮮王朝) 궁중(宮中) 가례상(嘉禮床)차림 고(考) -1651년(年) 현종(顯宗) 명성후(明聖后), 1696년(年) 경종(景宗) 단의후(端懿后) 가례동뢰연(家禮同牢宴)-)

  • Kim, Sang-Bo;Lee, Sung-Woo
    • Journal of the Korean Society of Food Culture
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    • v.5 no.1
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    • pp.43-58
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    • 1990
  • To analyze wedding feast dishes of royal prince (1651, 1696) of Choson Dynasty, studied Gare Dogam Euigwae. Historic book 'Gare Dogam Euigwae' discribed wedding feast dishes of king‘s Choson Dynasty. The results obtained from this study are as follows. Dishes were arranged in four kinds of table, the first one called the main table, the second the right side table, the third the left side table, the fourth the confronting side table. Dishes of main table were oil and honey pastry, and fruits (pine nuts, orange, dried persimmon, torreya nuts, dried chestnut, jujube). Dishes of the second table and the third table were oil and honey pastry, and small cake made of honey and rice with patterns pressed in it. Dishes of the fourth table were cooked vegetable (wild ginseng, platy-codon, radish, white gourd melon, ginger), dried slices of meat seasoned with spices (abalone, octopus, shark, pheasant), cooked meat (wild goose, fowl, egg, pheasant, abalone), and fried fish (roe deer, fish, duck, pigeon, sparrow). The main table (同牢大宴床) and the second table (右挾床) stand as a symbol for integrity. The third table (左挾床) symbolize longerity. The fourth table (面挾床) symbolize bearing many young and connubial felicity.

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A Study on the Comparison Among Korea, China and Japan Food Cultures (II) - From 14C to 19C, on the Daily foods - (한(韓).중(中).일(日)의 식생활문화(食生活文化) 비교연구(比較硏究) (II) - $14{\sim}19$세기, 일상식품(日常食品)을 중심(中心)으로-)

  • Ahn, Myung-Soo
    • Journal of the Korean Society of Food Culture
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    • v.12 no.3
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    • pp.353-364
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    • 1997
  • A study was carried out to compare the daily foods which were eaten during $14{\sim}19$ century among Korea (Chosun dynasty), China (Ming, thing dynasty), and Japan (Muromachi, Edo era). Specially, in Ming, Ching dynasty, Noodles and dumpling were cooked very often and in Muromachi, Edo era, many kinds of beans were used so much, and there were many kinds of steamed rice to compare with Korea and China. Also, in Japan at these era Woodong, Morisoba, and Somyen were used as favorite foods harbitually. 1. The crops were used as staple foods in three countries such as steamed rice, gruel, noodle, dumpling, rice cake etc. commonly. 2. In Chosun, a roe deer, deer, antelope, and wild boar were more favoite dishes than cow, chicken, and dog, generally people enjoyed to eat pork and chicken. In Ming Ching, pork, chicken, goose, dove, lamb, ass, and duck were used as food materials, also wild animals such as deer, rabbit, and monkey etc. were used. In Muromach era, wild animal as racoon dog, otter, deer, antelope, bear, were used as food materials, in early Edo era (Yayoi and Momoyama), beef and pork were used as daily foods but they were eaten decreasingly in Edo era. So in Japan at those era, the dishes prepared of fishes were more than those of meats. For example, Sushi was made from that time, people all over the world are enjoying to have Sushi at present time. 3. Also in these era, many kinds of vegetables and fruits were used in three countries, and new kinds of vegetables and fruits were introduced from foreign countries, for example, red pepper, pumpkin, sweet potato, potato in Korea, corn, sweet potato, red pepper in China, and water melon, pumpkin, corn, red pepper, marmellow, sweet potato, sugar beet in Japan.

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Ecologic Study of Hantavirus Infection in Avians and Squirrels in Korea (한국에 서식하는 조류와 다람쥐의 Hantavirus 감염에 대한 생태학적 연구)

  • Lee, Yun-Tai;Park, Chul-Hee;Cho, Kyu-Bong;Song, Jae-Ong;Park, Eun-Byung;Choi, Sung-Gu
    • The Journal of Korean Society of Virology
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    • v.26 no.1
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    • pp.101-106
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    • 1996
  • Hantavirus is the etiologic agent of hemorrhagic fever with renal syndrome (HFRS). It has been known that the natural reservoirs of Hantavirus are not only field mice but also other animals in parts of the world. In this study, to research on the host range of Hantavirus, immunofluorescent antibody against Hantavirus was investigated in wild birds from 1991 to 1992, duck from 1991 to 1992 and squirrels (Tamias sibiricus) in 1990 in Korea. The results were as follows: 1. Of total 179 wild birds of 14 species, Emberiza elegans elegans and Passer montanus dy-bowsky were antibody positive. The positive rates were 3.92% (2 out of 51) and 1.64% (1 out of 61), respectively. 2. The antibody titers of wild birds were 1:16 and 1:64 in Emberiza elegans elegans, 1:16 in Passer montanus dybowsky. 3. The positive rate of antibody in ducks was 2.3% (3 out of 129). 4. The positive rate of antibody in squrrels was 48.10% (38 out of 79). According these results, we newly showed that passer montanus dybowsky, domestic ducks and Tamias sibiricus possessed the antibody against Hantavirus.

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