• 제목/요약/키워드: vitamin C.

검색결과 2,791건 처리시간 0.03초

콩나물의 유통과정중(流通過程中) Chlorophyll, Amino산(酸) 및 Vitamin C의 변화(變化)에 관(關)한 연구(硏究) (Studies on the Changes in Chlorophyll, Free Amino Acid and Vitamin C Content of Soybean Sprouts during Circulation Periods)

  • 김순동;장봉희;김혜숙;하귀현;강경순;김덕희
    • 한국식품영양과학회지
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    • 제11권3호
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    • pp.57-62
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    • 1982
  • 콩나물의 유통과정(流通過程)동안 $20^{\circ}C$의 암소(暗所)와 명소(明所)(109 lux)에서의 chlorophyll, 역리(逆離) amino 산(酸) 및 vitamin C의 함량변화(含量變化), 상태변화(狀態變化)를 측정조사(測定調査)한 결과(結果)를 요약(要約)하면 다음과 같다. (1) 유통(流通)동안의 길이, 함량(重量) 및 변색정도(變色程度)를 측정(測定)한 결과(結果)는 암소하(暗所下)에서는 7$\sim$24 시간(時間) 경과(經過)되는 동안에 약 1cm 가까이 신장(伸長)되었으나 명소(明所)에서는 큰 변화(變化)가 없었다. 명소(明所), 암소(暗所) 다같이 콩나물 중량(重量)은 감소(減少)되었으며, 명소(明所)에서의 감소율(減少率)이 높았다. 암소하(暗所下)에서는 변색(變色)되지 않았으나 명소(明所)에서는 7$\sim$24시간(時間)에 변화(變色)되었다. (2) 콩나물의 자엽(子葉)은 광(光)의 노출(露出)에 의하여 빠르게 녹변(綠變)되었으며 녹변(綠變)은 porphyrin과 같은 전구체(前驅體)뿐만 아니라 amino산(酸)의 손실(損失)은 초래(招來)하였다. 그러나 배축(胚軸)에서는 amino산(酸)의 손실(損失)이 없었다. (3) 명소(明所)에서 손실(損失)되는 amino산(酸)은 cystine, aspartic acid, seine, histidine, glycine 등(等)이었다. (4) 유통기간(流通期間)동안 암소(暗所)에서는 vitamin C의 손실(損失)이 없었으나 광(光)에 노출(露出)은 자엽(子葉)은 7일간(時間), 배축(胚軸)은 5시간(時間)만에 22$\sim$27%의 손실(損失)을 초래(招來)하였다.

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Flexible Thin Layer Battery가 부착된 lontophoretic Gel Patch를 이용한 Vitamin C 유도체의 경피 흡수 증진 (Enhanced Transdermal Delivery of Vitamin C Derivative using lontophoretic Gel Patch with Flexible Thin Layer Battery)

  • 조완구;랑문정;송영숙;임영호;박현우
    • 대한화장품학회지
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    • 제33권1호
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    • pp.23-28
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    • 2007
  • 비타민 C는 강력한 환원제로서 멜라닌 색소의 합성을 저해하는 것으로 알려져 있다. 그러나 일반적인 화장품 제형에서는 낮은 안정성과 경피 흡수의 문제점으로 만족할 만한 효과를 나타내지 못한다. 본 연구에서는 안정성이 개선된 비타민 C의 유도체인 ascorbyl glucoside (AsAG)을 유효성분으로 하여 경피흡수를 증가시키고자 하였다. 본 실험에서는 유연하면서도 박막 형태의 배터리를 장착한 패치 화장품을 제조하고 안정성과 경피흡수성을 평가하였다. 피부에 낮은 전류를 증가하는 이온토포레시스를 활용하여 피부에 적용하는 전류의 세기를 증가시키면 물질의 경피흡수는 증가한다. 그러나 전류의 세기를 증가시키면 피부 부작용이 증가하기 때문에 본 연구에서는 한국인의 피부에 맞는 적절한 전류를 선택하여 피부 부작용을 최소화하였다. 이런 결과들을 바탕으로 유연하면서도 가벼운 박막 배터리를 개발하였으며, 2%의 AsAG을 함유한 이온토포레시스 패치의 안전성, 경피흡수정도, 미백효과 등을 검토한 결과 피부에 가하는 최적의 전류는 1.5 V의 배터리를 사용하여 피부 부작용과 경피흡수를 고려하여 평균 0.1 mA이었다. 또한 패치의 임상실험 결과 유의한 수준의 미백효과를 보였으며 피부 자극도도 통상의 화장품 수준을 나타냈다.

열구자탕(悅口子湯)의 문헌적 고찰 (A bibliographical study of Yeolgujatang)

  • 송혜림;이효지
    • 한국식생활문화학회지
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    • 제18권6호
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    • pp.491-505
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    • 2003
  • Yeolgujatang is traditional casserole with meat, fish and vegetables in special pot. Name of Yeolgujatang was in 1800s, as yeolgujatang, yeolgujatangbang, yeolguja, in 1900s, Yeolgujatang, royal feast food in Yi Dynasty was yeolgujatang, Meon-sinseolro, tangsinseolro. Yeolgujatang frame has legs and a lid, and a cylinder that can contain charcoal at the center of its rounded pot. with this charcoal, food can be cooked. Its material has changed from brazier to brassware, stainless steel, and silver. Nowdays electric sinseolro was also launched, which uses electric power instead of charcoal. Materials in yeolgujatang are beef, intestines, pork, chicken, pheasant, fish, sea bream, abalone, shrimps, vegetables, mushroom, ddock, guksu, cooked rice, seasening and garnish. Nutrition of Yeolgujatang per capita contains 221.5kal of calory, 17.3g of protein, 16.5g of fat, 6.1g of carbobydrates, 2g of fiber, 57.6mg of calcium, 208mg of phosphorus, 4.3mg of ferrum, $2177{\mu}gRE$ of vitaminA, 1.58mg of vitamin $B_1$, 0.3mg vitamin $B_2$, 6.6mg of vitaminC and 5.26mgNE of niacin. Yeolgujatang is excellent in nutrition, except for calcium and vitaminC.

경기지역 일부 초등학생의 성별과 비만도에 따른 영양소 섭취상태와 혈청 Leptin 및 혈청 지질에 관한 연구 (A Study of Nutrient Intake, Serum Lipid and Leptin Levels of Elementary School Students with Different Obesity Index in Kyunggi Area)

  • 이윤신;박혜순;이명숙;성미경;박동연;최미경;김미현;승정자
    • Journal of Nutrition and Health
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    • 제35권7호
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    • pp.743-753
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    • 2002
  • The purpose of this study was to investigate the relationship among nutritional status, serum lipids and leptin of 134 elementary school students with different obesity index residing in Kyunggi-do, Korea. Subjects were assigned to under weight, normal weight or over weight group according to the their obesity index. Their nutritional status, serum lipid and leptin levels were evaluated based on 24-hr dietary recalls, anthropometric measurements and blood analysis. The mean weight, height and obesity index of total subjects was 150.8cm, 45.6kg and 5.4%. The mean % of body fat was higher while LBM and TBW (total body water) were lower in over weight subjects than those of other two groups. Total food, plant protein, carbohydrate, and vitamin C intakes of underweight male students were lower than those of overweight male students. The consumption of total fat was the highest in the female normal weight subjects and the lowest in female overweight subjects. Male students consumed more plant protein and vitamin C than female students. The mean daily intake of vitamin B$_2$, calcium and zinc of all subjects did not meet the Korean RDA. Also, iron intake of female students was lower than the Korean RDA. The mean level of serum leptin was the highest in male and female overweight subjects (p<0.001). The HDL-cholesterol level was the highest in the underweight group of male subjects (p<0.05) and in the normal weight group of female subjects (p<0.001) The serum level of leptin and atherogenic index (AI) of females were higher than those of males. Serum leptin of total subjects had significantly positive correlation with obesity index, weight, SBP, body fat, cholesterol intake, serum triglyceride, and AI. However, serum leptin was negatively correlated with LBM, TBW, intake of plant protein, vitamin B$_1$, vitamin C and serum HDL-cholesterol. Obesity index was also positively correlated with weight, SBP, body fat, serum triglyceride and AI. To summarize the results, the vitamin B$_2$, calcium, zinc, iron and fiber intakes should be supplied to elementary school students, especially those who were overweight. The average serum leptin level of students showed remarkably positive correlation with obesity index, body fat, serum lipids and AI. Also, it was suggested that the serum leptin might be related to the dietary factors like cholesterol, plant protein, vitamin B$_1$ and vitamin C of elementary school students.

캐모마일, 세이지, 녹차 건분의 섭취가 노령흰쥐의 항산화능에 미치는 영향 (Effect of Dried Powders of Chamomile, Sage, and Green Tea on Antioxidative Capacity in 15-Month-Old Rats)

  • 정세원;김미경
    • Journal of Nutrition and Health
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    • 제36권7호
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    • pp.699-710
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    • 2003
  • This study was performed to investigate the effect of chamomile, sage, and green tea intakes on anti oxidative capacity in 15-month-old rats. Dried powders of three plants were analyzed to determine the amount of total flavonoids, $\beta$-carotene, vitamin C, vitamin E, and dietary fibers. In order to examine the change of antioxidative capacity in old rats, forty-eight Sprague-Dawley male rats weighing 621.2$\pm$9.5 g were divided into four groups according to body weight and fed for four weeks with each experimental diet of three dried powders and control diet. Plasma and liver thiobarbituric acid reactive substances (TBARS) levels and xanthine oxidase (XO) activities, erythrocyte and liver superoxide dismutase (SOD) activities and plasma vitamin A, C, E, and total carotenoids levels were measured. The total flavonoids and vitamin C contents were the highest in green tea powder. Beta-carotene and vitamin E contents were not significantly different among all three dried powders. Total dietary fiber contents also were not different among all three dried powders, but soluble dietary fiber contents of chamomile was higher than other two dried powders. Plasma TBARS level was found to be significantly lower in all the experimental groups as compared to control group. Chamomile powder group, especially, showed the lowest level among all experimental groups. Liver TBARS levels of experimental groups were also lower than that of control group and significant differences were observed in chamomile and green tea groups compared to control. Plasma XO activity of green tea group was significantly lower than control group. Liver XO activities of green tea and chamomile groups were significantly lower than control group. Erythrocyte SOD activity was not significantly different among all the groups. However, liver SOD activities of sage and green tea groups showed a significant increase as compared to control group. Plasma vitamin A level was not significantly different among all the groups. Plasma total carotenoids levels were found to be significantly higher in experimental groups as compared to control group. Plasma vitamin E level of chamomile group and vitamin C level of green tea group showed the highest level among all the groups. In conclusion, chamomile, sage, and green tea intakes had an effect on improving antioxidative capacity in 15-month-old rats. Effects of green tea and chamomile powders, especially, were higher than sage powder.

Oxyfluorfen에 대한 내성(耐性) 및 감수성(感受性) 벼품종(品種)의 생리활성(生理活性) 기구(機構) - V. 항산화제(抗酸化劑) 함량(含量) 및 GST 활성(活性) (Different Physiological Activity of Selected Rice Cultivars to Diphenylether Herbicide, Oxyfluorfen - V. Different Content of Antioxidant and GST Activity)

  • 국용인;구자옥;박노동
    • 한국잡초학회지
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    • 제16권4호
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    • pp.327-336
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    • 1996
  • DPE계 제초제(除草劑)인 oxyfluorfen의 생리활성(生理活性)을 내성(耐性)으로 선발되었던 벼 3품종(品種)과 감수성(感受性) 벼 4품종(品種)및 피를 공시하여 oxyfluorfen을 처리 후 항산화제(抗酸化劑) 함량과 GST 활성(活性)으로 조사하였다. 1. 식물자체가 보유하는 vitamin C 함량은 내성(耐性) 벼품종(品種)들이 감수성(感受性) 벼품종(品種)들이나 피보다 많았다. Vitamin E, carotenoid 및 glutathione(GSH, GSSG, total glutathione) 함량은 내성(耐性)과 감수성(感受性)식물들간에 양적인 차이를 볼 수 없었다. 2. Oxyfluorfen 처리에 따른 vitamin C 함량은 내성(耐性) 벼품종(品種) Hawon과 Baru에서 감수성(感受性) 벼품종(品種)들과 피보다 감소가 적었다. Oxyfluorfen 처리후 vitamin E 및 GSH 함량은 내성(耐性) 벼품종(品種)들이 감수성(感受性) 벼품종(品種)들이나 피보다 높았다. 그러나 carotenoid 함량은 내성(耐性) 벼품종(品種)들이 감수성(感受性) 벼품종(品種)들보다 높았으나, 감수성(感受性)인 피와는 차이가 없었다. 그리고 GSSG 함량은 내성(耐性)과 감수성종(感受性種)들간 차이가 없었다. 3. CDNB 또는 oxyfluorfen을 기질로 사용했을 때 식물 자체가 보유한 GST 활성(活性)은 내성(耐性) 벼품종(品種)들이 감수성(感受性) 벼품종(品種)들이나 피보다 높았다. 4. Oxyfluorfen 처리후 GST 활성(活性)은 벼에서 유도되지 않았으나, 오히려 피에서는 유도되었다. 또한, 벼의 GST 활성(活性)은 acifluorfen, bifenox 및 oxadiazon 처리에서도 유도되지 않았다.

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Investigation of the Antioxidant Status in Multiple Myeloma Patients: Effects of Therapy

  • Mehdi, Wesen A.;Zainulabdeen, Jwan A.;Mehde, Atheer A.
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권6호
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    • pp.3663-3667
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    • 2013
  • Background: Multiple myeloma is a malignant silent incurable plasma cell disorder. The present study aimed to assessed the activation of the oxidative stress pathway in afected patients Materials and Methods: Advanced oxidation protein products (AOPPs), malondialdehyde (MDA), adenosine deaminase (ADA), total antioxidant capacity (TAC) levels, glutathione, ascorbic acid (vitamin C), ${\alpha}$-tocopherol (vitamin E) in addition to related enzymes glutathione peroxidase (GSH-Px), glutathione reductase (GSH-R) and superoxide dismutase (SOD) were analyzed in sixty patients with multiple myeloma before and after one month treatment with induction therapy. Results: The results of the study showed a significant elevation in AOPPs, MDA, ADA levels in patients with multiple myeloma before and after treatment in comparison to healthy control samples In contrast TAC glutathione, vitamin C and E, and the antioxidant enzymes levels were decreased significantly. On comparing samples of MM patients after treatment, there was significant increase of TAC glutathione, vitamin C and E, and the antioxidant enzymes in parallel with decreasing AOPPs, MDA and ADA levels in comparison with samples of patients before treatment. Conclusions: The results indicate oxidative stress and DNA damage activity increase in MM and are alleviated in response to therapy.

Vitamin C Nutrition in Cattle

  • Matsui, T.
    • Asian-Australasian Journal of Animal Sciences
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    • 제25권5호
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    • pp.597-605
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    • 2012
  • Domestic animals, including ruminants, can synthesize vitamin C (VC) in their liver; as such, the dietary requirement for VC has not been confirmed in these animals. The adequacy of VC has been evaluated by quantifying VC levels in plasma, but the reported values in bovine plasma have been widely variable. Plasma VC concentration is decreased by heat stress, hepatic lesions, fattening, and infectious diseases such as mastitis in cattle. Therefore, VC supplementation is potentially beneficial for cattle with low plasma VC concentration. This review discusses the methods for determination of plasma VC concentration in cattle, VC nutrition, and the efficacy of VC supplementation in calves, dairy cattle, and beef cattle. Additionally I propose a reference range for plasma VC concentration in Japanese Black cattle.

깔라몬딘오렌지로부터 집속초음파추출을 이용한 기능성 물질 생산 공정 최적화 (Process Development for Production of Functional material from Citrus Madurensis(Citrofortunella microcarpa) Using Innovative Extraction by Focused Ultrasound(INEFU).)

  • 서승범;김유미
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2018년도 추계학술대회
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    • pp.94-94
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    • 2018
  • 집속초음파 추줄법(Innovative Extraction by Focused Ultrasound, INEFU)은 기존의 추출법에 비교하여 식물세포벽으로부터 기능성 성분을 낮은 온도에서 높은 추출 효율을 얻기 위한 추출공정으로 적용하기 위하여 연구되고 있다. 본 연구에서는 깔라몬딘오렌지(깔라만시, Citrus Madurensis, Citrofortunella microcarpa)에서 Vitamin C와 Polyphenol의 기능성 성분 추출을 위해 INEFU를 적용하여 추출 효율에 미치는 요인을 평가하였다. 추출 변수의 최적화를 위해 추출 온도 및 추출 시간을 요인으로 하여 순차적인 최적화를 진행하였다. 동일한 추출조건에서 저온추출(CEM)과 INEFU를 비교하였을 때 INEFU에서 Vitamin C는 고순도로 26배 증가하여 추출되는 것을 확인하였다. 또한 Polyphenol는 저온추출(CEM)에서는 polyphenol이 극소량 추출되었으나, INEFU에서는 Feruric acid가 10.3배 증가하여 추출되는 것으로 확인하였다. 본 연구를 통해 INEFU가 기존의 추출 공정에 비해 기능성 성분 생산에 보다 효과적임을 확인하였다.

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Antioxidant Potential in the Fruits of Pyrus Species (Pear) in Korea

  • Park, Young-Ki;Kim, Sea-Hyun;Chung, Hun-Gwan
    • 한국약용작물학회지
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    • 제15권5호
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    • pp.335-338
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    • 2007
  • Five samples (Bakwoonbae, Chungsilbae, Sandolbae, Dolbae, and Chuwhangbae) of Pyrus species differing in their origin of production were analyzed for total phenolic content, vitamin C content, and antioxidant activities. Two antioxidant activities were measured by the free-radical scavenging activity and reducing power method. Total phenolic content of the Chungsilbae extract (20.35 mg/g) was higher than those of other pears. Vitamin C content in five Pyrus species ranged from $420.32\;{\mu}g/g$ in Sandolbae to $659.75\;{\mu}g/g$ in Bakwoonbae. Chungsilbae also had the highest free radical scavenging activity (76.56%) and reducing power (0.35).