• 제목/요약/키워드: food source of Zn

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한국성인의 아연 섭취실태 및 아연보충에 의한 아연 영양상태 변화 (Dietary Zinc Analysis and Changes of Zinc Nutriture with Zinc Supplementation in Korean Adults)

  • 박진순
    • Journal of Nutrition and Health
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    • 제26권9호
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    • pp.1110-1117
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    • 1993
  • The purpose of this was to analyse zinc intakes and effect of Zn(30mgZnSO4/day) supplementation on plasma zinc level, serum HDL-cholesterol and serum Alkaline Phosphatase (AP) activity of Korean adults. The men consumed 8.52($\pm$2.08)mg of zinc, and the women consumed 6.4($\pm$2.62)mg of zinc. Although protein intakes of subjects were lower than normal values. The first source of zinc was cereal and grain group, the second was meat, fish, egg and soybean group. Two food groups supplied about 80% of zinc. After two weeks of zinc supplementation, the zinc concentration in plasma was significantly increased. The highest plasma zinc level was 78.80ug/dl(men), 76.04ug/dl(women) at 2 weeks after zinc supplementation(p<0.05). Serum DHL-cholesterol was significantly decreased by zinc supplementation. The lowest serum HDL-cholesterol level was 39.29mg/dl(men), 44.84mg/dl(women) at 4 weeks after zinc supplementation(p<0.01). Serum AP activity was significantly increased by zinc supplementation. The highest AP activity was 86.40units/L(man), 67.93units/L(women) at 2 weeks after zinc supplementation(p<0.05). It seems that the supplementation of 30mg ZnSO4/day can be beneficial for improving zinc nutriture. However it can be negative factor on coronary heart disease because serum HDL-cholesterol was significantly decreased(p<0.01)

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미국에 거주하는 젊은 한국인 부모의 식사와 암에 대한 개념 조사 (Concepts about Diet and cancer of Highly Educated Korean Young Parents Residing in America)

  • Dong-Yean Park
    • Journal of Nutrition and Health
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    • 제25권6호
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    • pp.518-528
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    • 1992
  • 본 연구는 암의 예방에 관한 효과적인 영양프로그램을 계획하기 위해 한국의 젊은 부모들이 현재 가지고 있는 식사와 암에 대한 개념들을 조사하였다. 10살 미만의 자녀를 가진 1명이상 가진 부모 14명을 In-depth 인터뷰 하였다. 대부분 조사대상자들은 식사 또는 식품이 암의 발병에 연관 있음을 인식하고 있었으나 몇몇 조사대상자들은 식사 또는 식품이 암의 발병 위험율을 감소 시킬수 있다고 믿고 있었다. 그들은 또한 육류, Smoked meat, cured meat, Processed food, 지방은 발병 위험율을 증가시키고 채소와 과일은 감소시킨다고 믿고 있었다. 조리법 중 grilling 또는 barbecuing은 암의 발병위험율을 증가 시키는 요인으로 인식되었다. 몇몇 조사대상자들은 특정한 영양소(Zn,Se)또는 식품들(된장, 버섯, 마늘, 인삼 등)이 발병률을 감소시킨다고 믿고 있었다. 대부분 조사대상자들은 20대와 30대가 암의 예방을 위해 중요한 시기라고 인식하고 있었으며 신문, 잡지, 라디오, TV가 건강과 영양에 대한 정보를 얻는 중요한 매체이었다.

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건조 ${\cdot}$ 가열처리가 청초호 퇴적물 중 중금속의 화학적 존재형태에 미치는 영향 (Effects of Drying and Heating on the Chemical Species of Heavy Metals in Lake Chungcho Sediments)

  • 박길옥;김휘중;안혜정;김신희;전상호
    • 생태와환경
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    • 제38권3호통권113호
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    • pp.334-340
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    • 2005
  • The chemical forms of Cd, Cu, Pb, and Zn were analysed by sequential extraction technique to evaluate the effects of drying and heating of dredged sediments from Lake Chungcho. The most abundant fraction of Cd, Cu, and Zn in the wet and untreated sediment was organic/sulfidic fraction that is state in reducing environment such as the bottom condition of Lake Chungcho, while Pb dominated in residual fraction. This means that the source of Cd, Cu, and Zn in the Chungcho lake sediment is related to the organic degradation and Pb to the erosion from surrounding rocks. With drying and oxidation by dredging, heating treatment, and disposal of the lake sediment, the chemical forms of studied metals changed greatly from organic/sulfidic fraction to adsorbed and reducible fractions which are more labile in oxygenated environment. Organic/sulfidic fraction of Cd, Cu and Pb in the wet sediment was transformed with drying and heating treatments to the labile ones like adsorbed and reducible fraction, but Zn to carbonate and reducible fraction. Heating of the sediment at $320^{\circ}C$ greatly increased the labile fraction of Cd and Cu, while that at $105^{\circ}C$ for Pb and Zn. It is believed that the increase in labile forms of heavy metals in the sediments by drying and heating is caused by the contact with oxygen during drying and heating and by the increase of pH of the pore water at the expense of organic/sulfidic fraction. It is concluded that the drying and oxidation currently used in the treatment of dredged sediment can increase labile forms of heavy metals in the sediment, and the potential of the metal availability from the sediment.

미생물에 의한 난분해성 유기염소계 오염물질의 분해 -PCBs 분해 균주의 분리 및 그 분해 조건- (Degradation of Organochlorinated Pollutants by Microorganism -Isolation of PCBs-Degrading Strain and Conditions of Degradation-)

  • 김찬조;오만진;이종수;손현주;성창근
    • Applied Biological Chemistry
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    • 제29권3호
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    • pp.273-278
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    • 1986
  • 해수(海水), 활성오이(活性汚泥) 등으로 부터 난분해성 유기염소계 오염물질인 Polychlorinated Biphenyls(PCBs)를 분해하는 균주를 분리, 선정한 후 세균학적 특성을 조사한 결과 Alcaligenes aquamarinus로 추정되었다. 기본염류배지에 PCB-42를 첨가하여 분해조건을 조사한 바 $25^{\circ}C$, $pH\;7.0{\sim}8.0$ 및 첨가농도 0.1%에서 가장 잘 분해되었으며 또한 진탕배양은 분해를 촉진하고 glucose와 peptone의 첨가는 효과가 인정되었으나 Zn 및 Mn의 첨가효과는 인정되지 않았다.

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자연산 및 양식산 메기의 미네랄 함량 및 영양평가 (Nutritional Assessment and Mineral Content of Wild and Cultured Catfish Silurus asotus)

  • 계현진;심길보;임치원;송미영;김대희;김보경;조영제
    • 수산해양교육연구
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    • 제27권5호
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    • pp.1364-1368
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    • 2015
  • This study was performed to evaluate mineral contents of catfish Silurus asotus. As a result of mineral content, the mean content of the macro mineral was (in descending order): K (310.36-412.66 mg/100 g), P (186.42-223.02 mg/100 g), Na (35.32-57.87 mg/100 g), Mg (22.88-31.87 mg/100 g), Ca (9.05-13.07 mg/100 g). In comparison, the mean content of the micro mineral was (in descending order): Fe (0.26-0.95 mg/100 g), Zn (0.26-1.02 mg/100 g), Cu (ND-0.08 mg/100 g), Mn (0.01-0.03 mg/100 g). A proportion of mineral intakes with the dietary reference intakes for Koreans (KDRIs) set by the Korean Nutrition Society. Nutrient uptake proportion of mineral intakes was (in descending order): P (62.16%), K (20.71%), Mg (16.82%), Fe (13.02%), Zn (11.38%) Cu (10.94%), Na (6.59%), Ca (3.09%), Mn (0.96%). The mineral content was compared with the major protein food sources according to the Korea Health Statistics (2013) such as polished rice, pork, chicken, beef, eggs and milk. The calcium content contains; lower level of milk and eggs, chicken whereas higher levels of rice, pork and beef. Catfish has less iron content than major protein food source. Phosphorus and potassium contain higher level of major protein food sources.

한국 연안산 해산 무척추동물의 미네랄 함량과 영양평가 (Mineral Content and Nutritional Evaluation of Marine Invertebrates from the Korean Coast)

  • 목종수;이두석;심길보;윤호동
    • 한국수산과학회지
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    • 제42권2호
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    • pp.93-103
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    • 2009
  • To measure the mineral contents of marine invertebrates, we collected 239 individuals from 52 species from the east (Pohang), west (Gunsan), and south (Tongyeong) coasts of Korea: 34 species of molluscan shellfish (Gastropoda and Bivalvia), 6 species of Cephalopoda, 8 species of Crustacea, and 4 other species. The mean contents of the macro mineral in the 100g edible portion of molluscan shellfish were high in the oder of Na (355.1 mg), P (128.1 mg), K (110.8 mg), Mg (83.8 mg) and Ca (57.5 mg). And the mean contents of the micro mineral in the molluscan shellfish were high in the oder of Fe ($41.12{\mu}g/g$), Zn ($30.48{\mu}g/g$), Mn ($3.81{\mu}g/g$), Cu ($3.49{\mu}g/g$) and Ni ($0.35{\mu}g/g$). We could not observe clear regional variation in the mineral content of the molluscan shellfish species. The mean contents of the macro mineral in the 100g edible portion of other marine invertebrates (Cephalopoda, Crustacea, etc.) were high in the oder of Na (400.7 mg), P (145.1 mg), K (105.0 mg), Mg (63.2 mg) and Ca (49.0 mg). And the mean contents of the micro mineral in other marine invertebrates were high in the oder of Zn ($24.4{\mu}g/g$), Fe ($13.8{\mu}g/g$), Cu ($4.88{\mu}g/g$), Mn ($2.14{\mu}g/g$) and Ni ($0.12{\mu}g/g$). The daily average intakes of the macro mineral through fisheries products consisted of P (125.9 mg), Na (119.3 mg), K (101.8 mg), Ca (31.0 mg), Mg (27.6 mg). And the daily average intakes of the micro mineral through fisheries products consisted of Zn (0.92 mg), Fe (0.68 mg), Cu (0.12 mg) and Mn (0.07 mg). The respective intakes of the minerals (P, Mg, Na, Ca, K) from fish were about 18.0, 7.9, 8.0, 4.4 and 2.2% of the dietary reference intakes for Koreans (KDRIs) set by the Korean Nutrition Society. And the respective intakes of micro mineral (Cu, Zn, Fe, Mn) from fish were about 14.6, 9.2, 6.7, and 2.1% of the dietary reference intakes for Koreans (KDRIs). Therefore, fisheries products play a very important role as a source of mineral.

Comparison of the Nutritional Composition of Bullfrog Meat from Different Parts of the Animal

  • Zhu, Yanli;Bao, Min;Chen, Chong;Yang, Xiaoli;Yan, Wenliang;Ren, Fazheng;Wang, Pengjie;Wen, Pengcheng
    • 한국축산식품학회지
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    • 제41권6호
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    • pp.1049-1059
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    • 2021
  • The objective of this study was to evaluate the nutritional content of bullfrog meat from different parts of the animal, including fore-chest, thigh and calf. Bullfrog meat was found to be a rich source of proteins, essential amino acids and minerals, but with a low fat content, compared with other aquatic meat products. There was no significant difference (p>0.05) between thigh and calf in mineral content (K, P, Na, Mg, Ca, Zn, Fe, Cu, and Mn), but the contents of K, P, and Mg were higher in thigh and calf than in the fore-chest (p<0.05). The salt-soluble, water-soluble and insoluble protein bands in sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) electrophoresis, from fore-chest, thigh and calf were similar, with the most abundant bands being 35 kDa (salt-soluble protein), 35-48 kDa (water-soluble protein) and 48 kDa (insoluble protein). The results showed that the insoluble protein content in the fore-chest meat was higher than that in the thigh meat and calf meat, but the salt-soluble protein fraction was the most abundant in thigh meat. These results showed that the nutrients in different parts of bullfrog meat were different.

청각의 식이섬유, 미네랄 함량 및 지방산 조성 분석 (Analysis of Dietary Fiber, Mineral Content and Fatty Acid Composition in Cheonggak (Codium fragile))

  • 서욱현;강효정;윤기복;안양준;김중범
    • 한국식품영양학회지
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    • 제32권4호
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    • pp.328-334
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    • 2019
  • The objective of this study was to analyze proximate composition, dietary fiber, mineral content, fatty acid composition in Cheonggak (Codium fragile) in order to encourage the consumption of Cheonggak. The proximate composition of Cheonggak was found to be 5.51% moisture, 24.09% crude ash, 15.79% crude protein, 2.47% crude lipid and 45.31% dietary fiber. The major mineral content of Cheonggak was Na 8,950 mg/100 g, Mg 1,252 mg/100 g, Ca 807 mg/100 g, K 457 mg/100 g, and trace mineral content was Fe 26 mg/100 g, Mn 8 mg/100 g, Zn 0.4 mg/100 g. Palmitic acid 36.86% and ${\alpha}$-linolenic acid 20.14% were the most contained fatty acids in Cheonggak. The ratio of saturated fatty acids to unsaturated fatty acids was 85.49% while ${\omega}-6$ fatty acids to ${\omega}-3$ fatty acids were 59.10%. Based on the proximate composition, dietary fiber, mineral content, and fatty acid composition, Cheonggak was judged to be a major source of dietary fiber and Mg and Ca, and it was deemed to be helpful in promoting health, including the prevention of hyperlipidemia. Cheonggak contained valuable nutrients similar to seaweed, which is produced and consumed the most in Korea. Thus, it is necessary to include Cheonggak in the food items.

식충식물로부터 Protease를 생산하는 Bacillus sp. SH-8의 분리와 효소 생산성 (Enzyme Production of A Protease-producing Strain, Bacillus sp SH-8 Isolated from Insect-eating Plant)

  • 윤기홍;이미성;박병완;박용하;김홍익;김정현;김문숙
    • 한국미생물·생명공학회지
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    • 제34권4호
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    • pp.323-328
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    • 2006
  • 식충식물에서 채취된 시료로부터 protease치 생산균으로 분리된 SH-8은 그람 양성간균으로 16S rRNA외 부분 염기서열에 근거하여 Bacillus속 균주로 확인되었다. Protease 생산을 위한 배지를 제조하기 위해 질소원, 탄소원, 인, 금속이온의 성분을 변화시키면서 균의 성장과 효소 생산성을 비교하였다. 포도당을 탄소원으로 사용하였을 때는 균의 성장은 정상적으로 일어나지만, pretense생산이 완전히 억제되는 것으로 나타났으며, 가용성 전분을 탄소원으로 사용하였을 때 효소 생산성이 가장 높았다. 질소원으로는 yeast extact가 효소 생산에 가장 적합하였으며, 농도가 높으면 효소 생산성이 저하되었다. 한편 2가 금속이온중 $Zn^{2+}$, $Cu^{2+}$, $Co^{2+}$, $Mn^{2+}$을 배지에 첨가하였을 때는 균의 성장이 심하게 저해되었으며, 효소 생산도 되지 않았다. $CaCl_2$를 첨가한 배지에서는 효소 생산성이 증가되었으며, 효소 반응에 $CaCl_2$를 첨가하였을 때도 효소 활성이 증가하였다. 이로보아 $CaCl_2$는 Bacillus sp. SH-8의 protease 생산성과 활성을 모두 증가시키는 것으로 판단된다. 가용성 전분(2%), yeast extract(0.3%), $CaCl_2$(0.3%), $CaCl_2$(0.01%)와 $KH_2PO_4$(0.01%)를 포함하는 것으로 구성된 최적화 배지에서 최대효소 생산성은 435 U/ml로 나타났으며 26시간이 되었을 때 배양액 내 효소활성은 급격히 감소하였다.

청국장에서 분리된 Bacillus licheniformis의 Protease 생산을 위한 배지 최적화 (Medium Optimization for the Protease Production by Bacillus licheniformis Isolated from Cheongkookjang)

  • 윤기홍;신혜영
    • 한국미생물·생명공학회지
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    • 제38권4호
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    • pp.385-390
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    • 2010
  • 청국장의 기호도를 개선하는 발효균으로 분리된 protease 생산균은 Bacillus licheniformis로 확인되었다. Protease 생산을 위한 배지를 최적화하기 위한 탄소원, 질소원, 인, 금속이온의 성분을 변화시키면서 균의 성장과 효소 생산성을 비교하였다. Glucose를 탄소원으로 사용하였을 때는 균의 성장은 정상적으로 일어나지만, protease 생산이 심하게 억제되는 것으로 나타났으며, Potato starch를 탄소원으로 사용하였을 때 효소 생산성이 가장 높았다. 질소원으로는 yeast extact가 효소 생산에 가장 적합하였다. 한편 2가 금속이온중 $Zn^{2+}$, $Cu^{2+}$, $Co^{2+}$을 배지에 첨가하였을 때는 균의 성장이 심하게 저해되었으며, 효소 생산도 되지 않았다. $CaCl_2$를 첨가한 배지에서는 균이 성장과 효소 생산성이 증가되었다. Potato starch(1.5%), yeast extract(1.5%), $CaCl_2$(0.7%), $K_2HPO_4$(0.03%)와 $KH_2PO_4$(0.03%)를 포함하는 것으로 구성된 최적화 배지에서 최대효소 생산성은 800 U/mL로 나타났으며 28시간 이후에는 배양액내 효소활성이 서서히 감소하였다.