• Journal of Nutrition and Health
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• 제15권1호
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• pp.1-8
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• 1982

유당(乳糖)을 함유(含有)하지 않은 분유식(粉乳食)을 섭취한 흰쥐의 장관내(腸管內)에는 Casein함유식(含有食)을 섭취한 때와 마찬가지로 C.P.P.가 생성(生成)되며 이 C.P.P.에 의해 장관내(腸管內) 칼슘이 증가(增加)되며 소장하부(小腸下部)에서의 칼슘흡수(吸收)가 촉진(促進)되는 것을 밝혔다. 그러나 10% 또는 30% Lactose를 첨가한 경우, 위의 제(諸) 현상(現象)은 보이지 않았다. 이것은 장관내(腸管內)에서의 칼슘의 가용화(可溶化) 및 흡수(吸收)에 대 한 C.P.P의 촉진효과(促進效果)가 유당(乳糖)과는 독립적(獨立的)으로 일어나는 것임을 시사함이다.

• 약학회지
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• 제22권2호
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• pp.72-82
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• 1978

This study was undertaken establish the relationship between trypsin inhibitor in raw soybean and antinutritional effect of raw legumes. 1) Among legumes produced in Korea, Glycine max contains a relatively high amount of protein(higher than 40%) compared with kindey bean, sword bean and mung bean and, furthermore, soybean which contains a high amount of protein possesses high trypsin inhibitory activity. 2) Disc electrophoretic pattern exhibited pattern exhibited that the crude protein preparation from Glycine max produced about 9-12 protein bands, and the pattern of electrophoretic mobility was very similar to each other. However, only a few protein bands were observed from the crude protein preparation of yard long bean, sword bean, adzuki bean, mung bean and rice adzuki. From the eluate of the sliced gel, it was confirmed that among those bands, only the fastest moving band contains trypsin inhibitory activity. 3) In chicks fed the normal diet the body weight was increased steady from one week and reached to 40% increase for three weeks but in chick fed raw bean diet, there was no body weight gain until two weeks feeding and only 10-20% of body weight gain was observed at the end of three week feeding. On the other hand, in chicks fed raw bean diet the weight of pancreatic tissue per 100g body weight was increased to about two-fold for two or three weeks but there was no change in liver weight. 4) In the case of amylase secretion from the pancreatic fragment, very strong stimulation on amylase secretion from pancreatic tissue of chicks fed a normal diet was produced by one unit of cholecystokin-pancreozymin. However, no stimulation was observed from pancreatic fragment of chick fed raw bean diet.

• Mycobiology
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• 제39권1호
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• pp.45-51
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• 2011

This work was conducted to investigate dietary supplementation of oyster mushroom fruiting bodies on biochemical and histological changes in hyper and normocholesterolemic rats. Six-week old female Sprague-Dawley albino rats were divided into three groups of 10 rats each. Feeding a diet containing a 5% powder of Pleurotus ostreatus fruiting bodies to hypercholesterolemic rats reduced plasma total cholesterol, triglyceride, low-density lipoprotein (LDL), total lipid, phospholipids, and LDL/high-density lipoprotein ratio by 30.18, 52.75, 59.62, 34.15, 23.89, and 50%, respectively. Feeding oyster mushrooms also significantly reduced body weight in hypercholesterolemic rats. However, it had no adverse effects on plasma albumin, total bilirubin, direct bilirubin, creatinin, blood urea nitrogen, uric acid, glucose, total protein, calcium, sodium, potassium, chloride, inorganic phosphate, magnesium, or enzyme profiles. Feeding mushroom increased total lipid and cholesterol excretion in feces. The plasma lipoprotein fraction, separated by agarose gel electrophoresis, indicated that P. ostreatus significantly reduced plasma ${\beta}$ and pre-${\beta}$-lipoprotein but increased ${\alpha}$-lipoprotein. A histological study of hepatic cells by conventional hematoxylin-eosin and oil red O staining revealed normal findings for mushroom-fed hypercholesterolemic rats. These results suggest that a 5% P. ostreatus diet supplement provided health benefits by acting on the atherogenic lipid profile in hypercholesterolemic rats.

• Preventive Nutrition and Food Science
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• 제15권2호
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• pp.143-146
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• 2010

Organic zinc was included in the diet of broiler chickens to examine its effect on the skin characteristics and the expression level of skin proteins. Broiler chicks (Ross$\times$Ross) were fed a corn-wheat-soybean meal basal diet, either as control or containing an additional 80 ppm of zinc proteinate for 4 weeks, and then five broilers from each treatment were selected randomly, slaughtered, and their skin characteristics were examined. There were significant increases (p<0.05) in thigh skin epidermis and dermis thickness in the chicks fed organic zinc. Collagen content in the skin of broilers was also increased by the addition of organic zinc to the diet. 2D-gel electrophoresis patterns indicated that expression levels of the three proteins, glyoxylase 1, hypothetical protein, and dispersin B were affected by zinc feeding. These results suggest that adding organic zinc to the chicken's feed may contribute to decreased skin tearing.

• Mycobiology
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• 제39권2호
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• pp.96-102
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• 2011

We investigated diet supplementation with shiitake mushroom fruiting bodies on biochemical and histological changes in hypercholesterolemic rats. Six-wk old female Sprague-Dawley albino rats were divided into three groups of 10 rats each. A diet containing 5% Lentinus edodes fruiting bodies given to hypercholesterolemic rats reduced plasma total cholesterol, triglyceride, low-density lipoprotein (LDL), total lipid, phospholipids, and the LDL/high-density lipoprotein ratio by 34.33, 53.21, 75.00, 34.66, 25.73, and 71.43%, respectively. Feeding mushroom also significantly reduced body weight in hypercholesterolemic rats. However, it had no detrimental effects on plasma albumin, total bilirubin, direct bilirubin, creatinine, blood urea nitrogen, uric acid, glucose, total protein, calcium, sodium, potassium, chloride, inorganic phosphate, magnesium, or enzyme profiles. Feeding mushroom increased total lipid and cholesterol excretion in feces. The plasma lipoprotein fraction, separated by agarose gel electrophoresis, indicated that L. edodes significantly reduced plasma ${\beta}$ and pre-${\beta}$-lipoprotein but increased ${\alpha}$-lipoprotein. A histological study of hepatic cells by conventional hematoxylin-eosin and oil red-O staining showed normal findings for mushroom-fed hypercholesterolemic rats. These results suggest that shiitake mushrooms could be recommended as a natural cholesterol lowering substance in the diet.

• Journal of Nutrition and Health
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• 제36권3호
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• pp.255-261
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• 2003

Food irradiation has been steadily increasing in many countries in line with increasing international trade and concerns about naturally occurring harmful contaminants in food. Although irradiation provides an excellent safeguard for the consumer by destroying almost 100% of harmful bacteria, it is necessary to ensure the safety of irradiated foods. This study was performed to investigate the effect of an irradiated diet on lipid peroxidation in the plasma, liver, small intestinal mucosa, and lymphocyte DNA damage in mice. Eight-week old ICR mice were assigned to two groups to receive either non-irradiated or irradiated (10 kGy) diets containing 20.38% fish powder and 6.06% sesame seeds for 4 weeks. The resulting changes in the degrees of lipid peroxidation were evaluated based on the level of plasma and liver thiobarbituric acid reactive substance (TBARS), transmission electron micrograph of jejunal mucosa, and free radical-induced oxidative DNA damage in lymphocytes, as measured by alkaline comet assay (single cell gel electrophoresis). The peroxide values of the gamma irradiated diet were measured every week, and the sample for comet assay was taken at the end of the four week experimental period. There was no significant difference in food efficiency ratio between the two groups. The peroxide values of the diet were immediately increased to 35.5% after gamma irradiation and kept on increasing during storage. After 4 weeks, no differences in tissue or plasma TBARS value were observed between the two groups, but epithelial cells of jejumum showed osmiophillic laminated membranous structures, considered as myelin figures,. The oxidative DNA damage expressed as tail moment (TM) increased 30% in the blood lymphocytes of the mice fed the irradiated diet. In conclusion, the comet assay sensitively detected differences in lymphocyte DNA damage after feeding with the irradiated diet for 4 weeks. However, in order to ensure the safety of irradiated foods, it would be more useful to conduct a long-term feeding regimen using an irradiated diet and examine the level of lipid peroxidation and the state of oxidative stress in a greater range of organs.

• 대한가정학회지
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• 제30권1호
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• pp.99-113
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• 1992

This study was performed to investigate the effect of dietary protein and calcium levels on cadmium detoxication in rats. Seventy male Sprague-Dawley rats weighing 208 $\pm$ 19 g were blocked into 10 groups of 7 animals according to body weight. Five groups were fed 15% protein-0.6% calcium diet with 100ppm cadmium in drinking water for first 15days and the other 5groups fed same diet without cadmium in drinking water for same period and served as controls. After this 15-day intoxication period, each one of cadmium intoxication and control groups were fed each of 4 kinds of detoxifying diets different with protein(40%, 15%) and calcium(1.3%, 0.6%) levels without cadmimum in drinking water for following 15 days of detoxifying period. Results were summarized as follows: 1) Food intake, body weight gain, F.E.R. and weights of liver, kidney and femur were increased by detoxifying diets and high protein diet was most effective in weight gains of liver and kidney. 2) When cadmium and metallothionein contents of initial intoxication group and those of all detoxication groups were compared, cadmium and metallothionein contents in the liver were not changed, but those in kidney increased, and those in intestine decreased markedly. 3) Only dietary protein level affected cadmium and metallothionein distribution among organs, and cadmium contents of whole blood, liver, kidney and femur were lower in high protein diet, but metallothionein contents in liver and kidney were higher in high protein diet. 4) Gel filtration chromatogram showed that most of cadmium in the cytosol was bound to metallothionein fractions in high protein-high calcium group. Results obtained indicated that high protein diet was effective in cadmium detoxication by increasing the induction of metallothionein synthesis. But high calcium diet did not play a role in cadmium detoxication.

• 한국임상수의학회지
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• 제19권1호
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• pp.49-54
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• 2002

Korean safflower (Carthami Flos) seed has been known to have healing effects on both bone fracture and osteoporosis. On the base of such a notice, this experiment was carried out to explore the effects of safflower seed on bone formation and bone repair. In addition, the healing mechanism was evaluated by analysing serum after feeding the seed to experimental. animals. The effect of Korean safflower seed were evaluated with 40 rats,3-month old. Forty Sprague-Dawley rats composed of 20 male and 20 female were underwent unilateral tibial defect and then fastened with unilateral fixators. The operated rats were divided into two groups depending on the composition of diet, such as positive control group fed normal diet (C-OP group) and safflower seed group fed 30% of safflower seed diet and 70% of normal diet (S-OP group). Postoperative radiographys were taken once in 2 weeks to evaluate callus formation for operated groups. In addition, a possible protein spots involved in bone recovery were examined using 2-Dimensional Gel Electrophoresis (2-DE). The comparison of the radiography between C-OP and S-OP group were showed that the safflower seed diet appeared to stimulate the formation of callus in the rat. On the images of 2-BE, it was able to identify possible five protein spots, having pl from 4 to 5 and molecular weight range from 24 to 26 kDa, involved in bone formation and repair, since no differing protein spots were found the two between groups except the five spots. No differences were observed between two groups before operation, but clear and bigger protein spots were observed from the S-OP group compared with C-OP group on 6 and 9 weeks post operation. These protein spots were, however, showed similar sizes and densities between two groups in 12 weeks later. The transformation of protein spots was suggested that these protein spots were involved in bone formation and recovery, in addition safflower seed might induce the formation of factors and activate these factors. In conclusion, this study suggest that safflower seed influence a variety of factors in the course of bone formation or the periods of remedy.

• 한국식품과학회지
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• 제41권2호
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• pp.191-195
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• 2009

본 연구는 새송이 버섯을 첨가하여 만든 어묵이 체내 지질 대사와 효소 활성에 미치는 영향을 알아보고자 수컷 Sprague-Dawley 흰쥐 30마리를 대상으로 고콜레스테롤(1%)첨가 기본식이, 30% 일반어묵 첨가 식이와 40% 새송이 버섯 첨가 오징어 어묵 식이를 급여하였다. 평균 식이 섭취량은 대조군, 일반 어묵군, 새송이 버섯 첨가 오징어 어묵군에 따른 각 군 간의 유의적인 차이는 볼 수 없었다. 체중 증가량과 식이효율은 대조군에 비해 실험군 모두 유의적으로 감소하는 경향을 보였다. 혈장 중성지질과 총 콜레스테롤, 동맥경화지수(A.I), GOT, GPT 수준은 대조군이 새송이 버섯 첨가 오징어 어묵군에 비해 유의적으로 높게 나타났다. HDL-콜레스테롤의 경우 새송이 버섯 첨가 오징어 어묵군이 대조군과 일반 어묵군보다 낮게 나타났고, 간조직의 콜레스테롤 및 중성 지방 농도는 유의적으로 차이가 없는 것으로 나타났다. 혈장과 간조직 TBARS 수준은 대조군보다 새송이 버섯 첨가 오징어 어묵군에서 유의적으로 낮은 수치를 보였다. 항산화 효소 활성도에서 SOD활성도는 대조군과 일반 어묵과의 유의적인 차이가 없었으며, CAT활성도는 대조군보다 새송이 버섯 첨가 어묵이 유의적으로 높게 나타났으며. GPx활성도 역시 유의적으로 높게 나타났다. 이 결과들을 종합해 보면, 고콜레스테롤혈증 흰쥐에서의 새송이 버섯 첨가 오징어 어묵은 전반적인 지질대사 개선과 함께 SOD, CAT, GPx와 같은 항산화 효소의 활성을 증가시켜 항산화 방어계에도 긍정적인 효과를 나타냄으로써 앞으로 고콜레스테롤 혈증 예방 등의 혈관 순환기 계통 질병을 예방하기 위한 식품으로써의 활용이 기대된다.

• 동아시아식생활학회지
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• 제16권4호
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• pp.399-407
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• 2006

We evaluated the effects of butterbur (Petasites japonicus Maxim) addition to the diet on lipid profiles and antioxidant biomarkers such as total glutathionine, TBARS value, carbonyl value, GPx, GR, SOD and paraoxonase activity in the plasma or liver of mice. The distribution of body fat deposition, total cholesterol (TC) contents, and atherogenic index in the plasma were significantly decreased in the butterbur group. The levels of GSH and the activity of GR and SOD were significantly higher in the liver of the butterbur group than in that of the control group. Lipid oxidation of the liver and kidney and protein oxidation of the liver and heart were decreased in the butterbur group. Additionally, the DNA damage, as determined using the comet assay (single cell gel assay) with alkaline electrophoresis and as quantified by measuring the tail length (TL), was decreased in the butterbur group. The results of the present study showed that a diet with added butterbur exerts degenerative disease-protective effects on oxidative DNA damage and lipid peroxidation.