• 한국식품저장유통학회지
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• 제19권6호
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• pp.849-857
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• 2012

전처리 방법에 따른 적외선건조 복숭아의 이화학적 및 기능적 특성을 조사한 결과 수분함량은 0.3% NaCl 용액 침지구에서 낮게 나타났다. 가용성 고형분 함량은 vitamin C와 soluble Ca 처리 농도가 증가함에 따라 유의적으로 증가하는 경향을 보였다. 식미와 밀접한 관계가 있는 당산비는 0.1% vitamin C처리구와 2.0% soluble Ca처리구에서 높은 값을 나타내었다. 색도는 각각의 전처리구에 있어서 $L^*$ 값 및 $a^*$ 값은 높고 $b^*$ 값은 낮은 경향을 나타내어 갈변이 억제되는 결과를 보였다. 절단력은 전처리구가 무처리구에 비하여 높게 나타났으며, soluble Ca 처리에 따른 무기질 함량은 K > Mg > Ca > Na > Fe > Zn > Cu의 순을 나타내었으며 soluble Ca의 처리 농도가 증가됨에 따라 무기질 함량과 Ca의 함량 또한 증가하는 것으로 나타났다. 관능특성에서는 각각의 전처리 구가 무처리구에 비하여 전반적으로 기호도가 높아지는 결과를 나타내었다. 전처리방법에 따른 적외선건조 복숭아의 총 폴리페놀 및 플라보노이드 함량은 전반적으로 무처리구에 비해 0.1% vitamin C처리구, 1.0% soluble Ca 처리구에서 높게 나타났으며 ABTS 라디칼 소거 활성에서도 이와 유사한 경향을 나타내었다. 이상의 결과에서 이화학적, 기능적 품질특성을 고려해 보았을 때 0.1% vitamin C 전처리와 적외선건조방법을 효과적으로 이용하는 것이 고품질 복숭아 건조제품을 제조할 수 있는 방안이 될 것으로 사료된다.

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.144.2-145
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• 2003

Reactive Oxygen Species (ROS) are produced during normal cellular function. ROS are very transient species due to their high chemical reactivity that leads to lipid peroxidation and oxidation of some enzyme, massive protein oxidation and degradation. Under normal conditions, antioxidant are substances that either directly or indirectly protect cells against adverse effects of ROS. Several biologically important compounds have been reported to have antioxidant functions. These incluce vitamin C, vitamin E, GSH, flavonoids. superoxidee dismutase(SOD), glutathione peroxidase(GPX) and catalase(CAT). (omitted)

• Nutritional Sciences
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• 제3권2호
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• pp.98-102
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• 2000

The purpose of this study was to evaluate the antioxidative potential of Korean wild leaf vegetables. Antixoidative activity of chamchwi (Aster scaber), nurucchwi (Pleurospermum kamtschaticum) sumssukbujengee (Aster glheni), moshidae (Adenophora remotiflora), spinach (Spinacia oleracea)k was evaluated as a reference for commonly used synthetic antioxidant, BHA. We compared the content of $\beta$-carotene, vitamin C and vitamin E as antioxidant vitamins, and total phenolic compound including flavonoid as non-vitamin compounds in Korean wild leaf vegetables and spinach. Thiobarbituric acid (TBA) value of Pleurospermum kamtschaticum, Aster scaber and Adenophora remotiflor was only 18-20% of control. TBA value of Aster glheni was 40% of control. On the basis of moles, the high level of vitamin C is the major contributor to the total antioxidant vitamin contents of Pleurospermum kamschaticum and Adenophora remotiflor. The amounts of flavonoid as well as total phenolic compound in Pleurospermum kamtschaticum and Adenophora remotiflor were also much higher than those of spinach. The amounts of flavonoid as well as total phenolic compound in Aster glheni were much higher than those of spinach while total amount of antioxidant vitamins was significantly lower than that of spinach. These results suggest that Pleurospermum kamtschaticum and Adenophora remotiflor could have antioxidative potency in food. Because of the higher content of antioxidant vitamins in Pleurospermum kamtschaticum and Adenophora remotiflor, these Korean wild leaf vegetables may have preventive effects on degenerative diseases, which have been associated with free radical mediated events.

• Asian-Australasian Journal of Animal Sciences
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• 제12권2호
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• pp.287-294
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• 1999

Vitamin and mineral deletion from swine diets can result in reduced growth if done during the period wher muscle and bone development is occurring. Several of the vitamins and minerals decline in the serum during the starter period, suggesting a higher dietary inclusion may be necessary postweaning. Vitamin research with grower-finisher pigs is limited, but results suggest that rapidly growing lean pigs may have a higher dietary requirement for the B vitamins. Several studies have suggested that early weaning and pigs of a lean genotype may have a dietary requirement for vitamin C, CI and Cr. High dietary vitamin E levels are fortified in the diet and seems to be effective in preventing mulberry heart problems in weanling and grower pigs. Organic Se is more effectively retained in muscle tissue than inorganic Se, approximately 20% less is excreted, but the bioavailability of organic Se for glutathione peroxidase activity is only 80 to 90% to that of sodium selenite. The active form of thyroxine (T4) is dependent upon a Se containing enzyme. Withdrawal of vitamins and minerals during the latter part of the finisher period has not affected pig performance responses, but studies with poultry suggest that the vitamin content of the meat may be reduced if the vitamins are withdrawn prior to marketing. High levels of vitamin E have been shown to improve pork quality, by reducing drip loss. Studies with vitamin C and Se have suggested that they may also be involved in pork quality.

• 대한지역사회영양학회지
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• 제13권4호
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• pp.565-572
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• 2008

This study was performed to investigate nutritional intakes and preference food and blood composition of female college students of premenstrual syndrome. Based on physical measurement test results, both groups showed no noticeable difference and both groups were within the normal range according to body composition analysis. In terms of nutrients consumption, results showed nutritional intakes more than EAR(estimated average requirements) included phosphorus>vitamin $B_6$>vitamin $B_1$, while nutritional intakes less than EAR were vitamin A>vitamin $B_6$>calcium>folic acid. A significant difference was observed for vitamin C intake(p<0.05). The overall mean values of basic blood(WBC, RBC, Hct, and Hb), sex hormone(Estrogen, Progesterone), aldosterone, cortisol, Cu, Zn, and Ca, Mg indices in female college students were within the normal range and there was no significant difference between the PMS group and the Normal group. In conclusion, vitamin C intake of the PMS group showed a level of 84.8% EAR. Therefore vitamin C supplement can be beneficial to relieve the PMS Syndrome.

• Journal of Audiology & Otology
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• 제23권1호
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• pp.49-52
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• 2019

Background and Objectives: Considering important role of vitamin D in many physiological processes including vestibular system in the ear, aim of present study is to evaluate saccule function via cervical vestibular evoked myogenic potential (cVEMP), in patients with vitamin D deficiency. Subjects and Methods: After routine audiological tests, cVEMP were recorded in 15 patients with vitamin D deficiency and 16 normal subjects. The short tone burst (95 dB nHL, 500 Hz) was presented to ears. cVEMP was recorded with surface electromyography over the contracted ipsilateral sternocleidomastoid muscle. Results: Mean of p13, n13, interpeak latencies and amplitude ratios were measured in both groups. Statistical analysis did not show differences between two groups. Conclusions: Maybe serum 25-hydroxyvitamin D concentration was not low enough to have effect on saccule in the patients in present study or saccule have had low susceptibility to effects of vitamin D deficiency. For better judgment about effect of vitamin D deficiency on saccular function planning studies with high sample size is recommended.

• 대한청각학회지
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• 제23권1호
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• pp.49-52
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• 2019

Background and Objectives: Considering important role of vitamin D in many physiological processes including vestibular system in the ear, aim of present study is to evaluate saccule function via cervical vestibular evoked myogenic potential (cVEMP), in patients with vitamin D deficiency. Subjects and Methods: After routine audiological tests, cVEMP were recorded in 15 patients with vitamin D deficiency and 16 normal subjects. The short tone burst (95 dB nHL, 500 Hz) was presented to ears. cVEMP was recorded with surface electromyography over the contracted ipsilateral sternocleidomastoid muscle. Results: Mean of p13, n13, interpeak latencies and amplitude ratios were measured in both groups. Statistical analysis did not show differences between two groups. Conclusions: Maybe serum 25-hydroxyvitamin D concentration was not low enough to have effect on saccule in the patients in present study or saccule have had low susceptibility to effects of vitamin D deficiency. For better judgment about effect of vitamin D deficiency on saccular function planning studies with high sample size is recommended.

• Journal of Nutrition and Health
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• 제29권8호
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• pp.881-888
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• 1996

The purpose of this study was to determine whether vitamin B6(B6) deficiency affects fuel utilization and blood cholesterol profile with exercise-training. Twenty-four rats were fed a B6 deficient(-B6) diet or a control (+B6) diet for 5 weeks and either exercised(EX) or nonexercised (NE). EX rats were exercised on treadmill(10$^{\circ}$, 0.5-0.8km/h) for 20 minutes everyday. Glucose(GLU), glycogen (GLY), protein(PRO), trglyceride(TG), free fatty acid(FFA), total cholesterl(TC), HDL-cholesterol(HDL-C) and LDL-choleterol(LDL-C) were compared in plasma(P), liver(L) and skeletal muscle(M) of rats. There was a vitamin effect on the level of P-GLU, P-TG, M-TG, L-GLY, L-PRO and an exercise effect on the level of P-PRO, P-FFA, M-PRO, L-GLY, L-TG, P-TC, P-HDL-C, P-LDL-C. Compared to +B6 rats were lower and there were no differences in P-GLU, P-FFA, P-TG. M-GLY, L-TG, P-TC and P-HDL-C. In EX group, the level of P-TG was higher and M-PRO was lower in -B6 rats. There were no differences in M-GLY, L-TG, P-TC and P-HDL-C. These results suggest that a lowered intake of vitamin B6 may impair the adaptation of animals to fuel metabolism related to a decrease of fatty acid oxidation and attenuates the exercise-traning effect on blood lipid profile.

• 대한지역사회영양학회지
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• 제5권3호
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• pp.432-443
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• 2000

Smoking can increase oxidative stress and thereby change the antioxidant defense system in the body. Supplementation of antioxidant vitamins might improve antioxidant status in the body. The purpose of this study was to evaluate the effectiveness of vitamin C supplementation and smoking cessation education on changes of antioxidant status and psychosocial factors related to smoking. To obtain above purposes, we investigated the effectiveness of intervention for male adolescent smokers were evalnate by assessing changes in dietary intakes, plasma antioxidant vitamin concentration, and psychosocial factors related to smoking after program completion. Subjects, male adolescent smokers, were assigned into four groups : Control group(19 students), Educ. group(19 students), Vit. C supple. group(19 students), and Educ.+Vit. C suppl. group(19 students). The Educ. group and Educ.+Vit. C suppl. group received nutrition and smoking cessation education once a week for 5 weeks. Vit. C suppl. group and Educ.+Vit. C suppl. group received 500 mg per day of ascorbic acid for 35 days. All data were collected before and after intervention. Vit. B$_2$and Vit. C intakes of all groups were increased, but the only Ca intake was increased in the Educ. group. Plasma Vit. C concentration and Ratio(plasma Vit. C/Vit. C intakes) were increased in the Vit. C suppl. group and Educ.+Vit. C suppl. group, and the Vit. C deficiency status of these groups(Vit. C suppl. group and Educ.+Vit. C suppl. group) disappeared. Showing the effects of Vit. C supplementation, plasma $\alpha$-tocopherol was increased in the Educ. and Educ.+Vit. C suppl. group, and especially high increases were seen in the Educ.+Vit. C suppl. group. Psychosocial factors related to smoking changed after the education a little. This intervention program had an impact on nutrition intakes, plasma antioxidant vitamins, and some beliefs related to smoking in male adolescent students. Various programs of nutrition and smoking cessation education and vitamin supplementation for quitting smoking must be implemented for adolescent smokers, and further studies are needed regarding sorts and amount of antioxidant nutrients and supplementation periods.

• 한국식생활문화학회지
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• 제10권2호
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• pp.97-100
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• 1995

Three potato cultivars were prepared as slices and stored for 4 weeks at $5^{\circ}C$. Changes in Vitamin C content and other quality factors, such as color, pH, soluble solid and protein content were determined. Vitamin C content and L value decreased in three potato cultivars. Initial Vitamin C contents of three potato cultivars varied from 49.27 mg% in Sumi to 56.40 mg% in Namjak. Changes in L value showed that the tendency of browning in Daejima was slower than Sumi and Namjak. Changes in pH were small. Soluble solids and protein content increased and varied by cultivar. From the correlation analysis, correlation between browning degree and Vitamin C content was low in three potato cultivars.