• Korean Journal of Community Nutrition
• /
• v.10 no.5
• /
• pp.700-707
• /
• 2005

The purpose of this study was to investigate the implications of dietary intake and the level of serum micronutrients (Se, Mn, Cu, Zn), lipid peroxidation, and antioxidant capacity in Korean women with cervical intraepithelial neoplasia (CIN) . From October 2002 to March 2003, 50 patients diagnosed with CIN (confirmed with colposcopy directed biopsy) and 50 patients without any cervical disease as the control group were enrolled in the study at the Department of Gynecology Cancer Center at Samsung Cheil Hospital. Animal fat intake in CIN group was significantly higher than that of the control group, but plant protein intake in the CIN group was significantly lower than that of the Control group. Energy and zink intakes were similar in the two groups. The serum concentration of antioxidant minerals in the CIN group were not significantly different from the control group. The total radical trapping antioxidant potential concentration of plasma was significantly lower in the CIN group (1.12mM) than in the control group (1.25mM) (p<0.05). But MDA (malondialde-hyde) of serum was significantly higher in the CIN group (7.60mM) than in the control group (4.99mM) (p<0.005). The serum selenium concentration of the control group showed significant positive correlation with the MDA level (r=0.311). These findings are suggestive of protective roles for healthy dietary habit including increasing antioxidant nut-rients and decreasing intake of fat.

• Journal of the Korean Society of Food Culture
• /
• v.20 no.1
• /
• pp.15-20
• /
• 2005

This study seeks to classify the skin types and determined the relation between the dietary habit and preference of foods targeting college women in Daegu and Gyeong-Buk Province. Skin types of the subjects were 31% of combination skin, 25% of dry skin and 22% of normal, oily skin. College women mostly had two meals a day, and those who had less frequent meals developed more combination skin. Many of them did not exercise, and women with normal skin who did not exercise showed the lowest at 13.9%, supporting the significance (p<.05). It was exposed that don't have breakfast and have irregular meal and don't have easy meal in all skin types. Instant foods was exposed that ingested the most in dry skin and the least in oily skin, supporting the significance(p<.05) and fruit or vegetable ingested much in dry skin. It was exposed that considered atmosphere at meal and meal helps in health in all skin types, normal skin type considered balanced diets the most and supporting the significance(p<.01) Food preference in all skin types showed the strongest in drinks and showed strong in greenish yellow vegetables, fruits, confectioneries, drinks, milk and dairy goods. On the other hand, it showed low in nuts and salted fishes. In sum, regular and balanced meals give the skin a healthy status, and intake of protein, vitamins and minerals has impact on the skin status. Thus, sufficient quality nutrition is crucial in staying a healthy skin.

• Journal of Nutrition and Health
• /
• v.26 no.2
• /
• pp.145-155
• /
• 1993

A factorial experiment was conducted to determine the influence of phytate(0 or 10g/kg diet) and calcium (Ca)(3 or 10g/kg diet) intakes on Ca, P and Zn metabolism by growing female rats. Food intake and weight were similar for the all groups, however, phytate ingestion for six weeks depressed femur growth. The low Ca plus phytate group showed the lowest Ca content of total femur and this was related to a significant decrease of Ca retention. Phytate intake depressed zinc(Zn) absorption in the first metabolic collection. This inhibitory effect of phytate on Zn absorption was improved in the low Ca plus phytate group after several weeks. Impared Zn absorption however remained in the high Ca plus phytate group which was reflected in the lowest Zn content of femur, phytate intake with high Ca also depressed phosphorous(P) absorption and serum and urinary P. These adverse effects of phytate on Zn and P absorption when the dietary Ca was high could explain reduced femur weight despite the highest concentration of femur Ca(mg/g ash) in this group. Results suggest that phytate can adversely affect not only Ca metabolism but Zn and P utilization. Thus, for the normal bone growth when phytate intake is high, the ingesion of Ca, P, Zn and other minerals should be enhanced.

• Journal of Nutrition and Health
• /
• v.35 no.9
• /
• pp.919-925
• /
• 2002

Iron deficiency is a severe nutritional problem in the world. Coffee intake of the people is increasing every year and it can increase the loss of several essential body minerals including iron. Either iron deficiency or coffee intake may increase the oxidative stress of the body. However, the effect of iron deficiency and/or coffee intake on peroxidation have not been studied much. Therefore, the aim of this study was to investigate the effect of coffee intake on oxidative stress and antioxidative enzyme activities of iron-deficient rats. Forty-eight male rats of Sprague-Dawley strain were divided into two groups by dietary iron levels. Iron deficient group were fed 5 ppm iron diet and iron-sufficient group were fed 50 ppm iron diet. Each iron group were divided into three sub-groups by coffee levels (0%, 1%, 4%) included in the experimental diet. The experimental diets were fed for 4 weeks. The hemoglobin level was significantly low in iron deficient group and the level was exacerbated by high coffee intake. The malondialdehyde concentration of the plasma and liver were not affected by iron or coffee level in this study. However, plasma aspartate aminotransferase and alanine aminotransferase, the indicator of the liver damage, were increased by high coffee intake. The erythrocyte and liver superoxide dismutase (SOD) activities were elevated in iron deficient groups. Coffee intake increased erythrocyte SOD activity in iron sufficient groups. Glutathione peroxidase and catalase activities were not influenced much by either iron or coffee intake. In conclusion, high coffee intake in iron deficiency may not only increase the anemia symptoms, but also may increase the oxidative stress of the body.(Korean J Nutrition 35(9) : 919~925, 2002)

• Journal of Nutrition and Health
• /
• v.21 no.5
• /
• pp.317-323
• /
• 1988

Mean daily excretion of Ca, P, and Fe were measured in 49 healthy young Koreans(23 males and 26 females) form urine and feces samples cellected for three days. Dietary intakes of the subjects during the study periods were calculated from intake records. Main results of the study are as following: 1) Mean daily urinary, fecal, and total Ca excretions were 162$\pm$20mg, 346$\pm$39mg, and 508$\pm$50mg, respectively in males and 154$\pm$16mg, 262$\pm$26mg, and 416$\pm$24mg, respectively in females. The mean values of the two groups were not significantly different. 2) Mean daily urinary, fecal, and total P excretions were 751$\pm$45mg, 384$\pm$26mg and 1135$\pm$56mg, respectively in males and 552$\pm$29mg, 335$\pm$34mg and 894$\pm$50mg, respectively in females. Urinary and total P excretion in males were significantly higher than females(p<0.01), but such differences disappeared when the excretions were calculated per kg body weight. 3) mean daily fecal Fe excretions were 12.8$\pm$0.9mg in males and 10.1$\pm$0.8mg in females. The mean value in males was significantly higher than that in females(p<0.05) but when calculated per kg body weight, both groups excreted 0.2mg/kg body weight. 4) Mean daily intake levels of the minerals estimated from three day food intake records were Ca 543mg, P 1136mg, and Fe 14.3mg in males and Ca 533mg, P 869mg, Fe 10.8mg in females. These intake levels seem to be sufficient to supply the daily losses of the study subjects except P in females. However, the problem of estimating dietary intake levels by food intake record should be recognized. Especially females in the study are in menstration age and their Fe losses in the menstration (estimated to be 0.5mg of available Fe per day) should be also supplied in the diet.

• Journal of the East Asian Society of Dietary Life
• /
• v.22 no.3
• /
• pp.365-370
• /
• 2012

Proximate composition, reducing sugar, and mineral content of several cultivars of Rehmannia glutinosa were analyzed. the moisture and soluble solid content of fresh Rehmannia glutinosa ('Korea', 'Kokang', 'Sewon 10', 'Sewon 11' and 'Jihwang 1') were 74.6~78.4% and $19.6{\sim}22.4^{\circ}Brix$, respectively. Proximate composition of dried Rehmannia glutinosa ranged from 82.91~86.94% carbohydrate, 3.38~5.70% crude protein, 2.5~3.0% crude ash and 3.47~3.80% fiber. Sugar composition by HPLC/ELSD showed that sucrose (4.49~7.75 g/100 g), raffinose (2.96~4.78 g/100 g) and stachyose (42.36~45.87 g/100 g) were present, whereas monosaccharides were not detected in 5 cultivars of dried Rehmannia glutinosa. Mineral compositions of dried Rehmannia glutinosa by ICP-AES were Ca (639.9~782.0 ppm), Fe (128.5~634.9 ppm), Na (119~150 ppm), K (6,639.1~10,448.0 ppm), Mg (372.2~981.8 ppm) and Zn (8.8~474.2 ppm). However, Co and Mo were not detected. Among 5 cultivars of Rehmannia glutinosa, 'Kokang' and 'Sewon 10' contain higher amounts of Fe, Ca, K, Mg, Cu and Zn than the other cultivars.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.41 no.5
• /
• pp.315-323
• /
• 2008

To measure the mineral content of fishes, we collected 177 individuals from 53 fish species from the east (Pohang), west (Gunsan), and south (Tongyeong) coasts of Korea. The mean content of the macro mineral in a 100 g sample taken from the edible portion of each fish was (in descending order): P(207.4 mg), K(169.7 mg), Na(101.6 mg), Ca(44.4 mg), and Mg(30.4 mg). In comparison, the mean content of micro mineral in the fishes was (in descending order): Zn ($8.98{\mu}g/g$), Fe ($5.03{\mu}g/g$), Cu ($0.76{\mu}g/g$), Mn ($0.43{\mu}g/g$), and Ni ($0.08{\mu}g/g$). We could not observe clear regional variation in the mineral content of fish species. With regard to minerals considered essential for humans, the amount of Ca per sample (100 g) was the highest in the Scyliorhinus torazame (465.4 mg), and than followed by Ammodytes personatus (338.0 mg), Dasyatis akajei (267.4 mg), Raja kenojei (248.1 mg), Conger myriaster (174.1 mg), Clupanodon punctatus (86.8 mg), Muraenesox cinereus (81.2 mg), and Engraulis japonica (70.4 mg). The daily average intake of the mineral through the fishes consisted of P (100.6 mg), K (82.3 mg), Na (49.3 mg), Mg (14.8 mg), Zn (0.44 mg), Fe (0.24 mg), Cu (0.04 mg) and Mn (0.02 mg). The respective intakes of macro mineral (P, Mg, Na, Ca, K) from the fishes were about 14.4, 4.2, 3.3, 3.1 and 1.8% of the dietary reference intakes for Koreans (KDRIs) set by the Korean Nutrition Society. In comparison, the respective intakes of micro mineral (Cu, Zn, Fe, Mn) from the fishes were about 4.6, 4.4, 2.4, and 0.6% of the KDRIs.

• Journal of the East Asian Society of Dietary Life
• /
• v.8 no.4
• /
• pp.430-440
• /
• 1998

Meat is a perishable product since it offers favorable conditions for microbial contamination and multiplication. Besides, undercooked and raw meat has been linked to outbreaks of hemorrhagic diarrhea due to the presence of microbial pathogens. Therefore, this study was conducted to find out the effect of the use of gamma-irradiation in order to improve preservation and eliminate this microorganisms. The Initial level of microbial contamination in pork was 1.1$\times$10$^3$ CFU/g (aerobic bacteria), 5.3$\times$10$^3$CFU/g (psychrophile), 3.1$\times$10$^3$ CFU/g (coliforms) and 3.2$\times$10$^3$ CFU/g(Listeria), All kinds of contaminated microorgnisms were sterilized by gamma irradiation at 3 kGy. The proximate composition of pork was not significantly changed by irradiation dose and storage period. The pH was slightly increased during storage period and titratable acidity decreased. However, no significant changes in pH and acidity were observed by gamma irradiation. There was no difference in total amino acid content regardless of irradiation dose and storage period. Glutamic acid was detected at high levels throughout the storage period. The major mineral compositions of pork were potassium, phosphorus, sodium, magnesium. No significant difference in the components of minerals were observed by gamma irradiation.

• Korean Journal of Poultry Science
• /
• v.27 no.3
• /
• pp.169-179
• /
• 2000

An experiment was conducted to measure the effect of crude phytase supplementation on the growing performance, blood concentrations of some minerals and tibia characteristics of broiler chickens. Day-old 240 male broiler chickens (Avian) were randomly allotted to four treatments. There were six replicates per treatment, and ten chicks per replicate. Treatments consisted of two levels of crude phytase (0 and 600U/kg) made from Aspergillus ficuum and two levels of non-phytate P (0.45 and 0.35% NPP for the starter period, and 0.35 and 0.25% NPP for the grower period), making the experiment 2$\times$2 factorial. The starter period was from hatch to 21 d of age, and grower period was from 22 to 35 d of age. Feed intake and weight gain of chicks fed diet containing phytase were higher(P〈0.05) than those of chicks fed diets without phytase, however, no differences was found in feed/gain. mortality, and nutrient availabilities regarding the phytase supplementation. Chickens fed diets with low NPP and phytase excreted lower P than did birds fed diets containing normal NPP without phytase. The level of NPP and phytase did not affect N excretion. The Ca availability was increased by feeding low NPP diet. Dietary phytase increased the availabilities of P and Mg, but decreased those of Fe and Zn. There was interactions between dietary NPP level and phytase addition on mineral availability. Tibia was lighter and shorter in low NPP groups, and heavier in phytase treated groups. The tibial contents of Ca, P and Mg decreased in low NPP treated groups, but increased in phytase treated groups. The ash content of tibia of chickens fed diet with phytase was higher than that of birds fed diets without phytase. These data suggest that the crude phytase supplementation to broiler diets containing low NPP level improves growth performance and mineral availability and, reduces fecal P excretion.

• Asian-Australasian Journal of Animal Sciences
• /
• v.25 no.4
• /
• pp.486-495
• /
• 2012

Twenty four periparturient cows were used to determine the effects of DCAD on acid-base balance, plasma and urine mineral concentrations, health status, and subsequent lactation performance. Each group of 12 cows received either a diet containing -100 DCAD or +100 DCAD for 21 d prepartum. Both anionic and cationic groups were divided into two groups, one received a +200 DCAD and the other +400 DCAD diet for 60 d postpartum. Prepartum reduction of DCAD decreased DMI, urinary and blood pH, urinary concentrations of Na or K and increased plasma and urinary Ca, Mg, Cl and S. Also cows fed -100 DCAD diet consumed the most dry matter in the first 60 d after calving. Postpartum +400 DCAD increased milk fat and total solid percentages, urinary and blood pH and urinary Na and K concentrations, but urinary Ca, P, Cl and S contents decreased. Greater DMI, FCM yields were observed in cows fed a diet of +400 DCAD than +200 DCAD. No case of milk fever occurred for any diets but feeding with a negative DCAD diet reduced placenta expulsion time. In conclusion, feeding negative DCAD in late gestation period and high DCAD in early lactation improves performance and productivity of dairy cows.