Journal of the Korean Society of Food Science and Nutrition
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v.24
no.6
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pp.911-916
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1995
Even though the saps have been consumed as beverage in Korea for a very long period of time, a little research has been conducted on the chemical composition. We determined mineral, free sugar, composition amino acids and nucleotides in the sap of Gorosoe(Acer mono Max.) and Sugar Maple(Pseudo-sieboldianum Kom.) collected from Sancheong, Kurye and Hamyang. The contents of solid, crude protein and ash were 1.1~3.3%, 0.03~0.12% and 0.02~0.05% in the sap of Gorosoe and Sugar Maple, respectively. The detectable nucleotides were CMP, UMP, IMP, GMP, AMP and hypoxanthine. Free sugar that we determined in the sap of Gorosoe and Sugar Maple were sucrose, fructose and glucose, but maltose was not detected. The chief component of saccharides in the sap was sugar and ranged from 7.1 to 36.6g/L. Especially, the sucrose contents in the sap of Gorosoe and Sugar Maple from Hamyang were higher 3.7 and 2.2 times than those from the other samples. The prominent minerals in the sap were calcium and potassium. The calcium concentration was ranged from 99.0~153.3mg/L in the sap of Gorosoe and was ranged from 21.2~32.4mg/L in that of sugar maple. The sap of Gorosoe and Sugar Maple were composed of 18 and 15 kinds of amino acid respectively, and the total contents of amino acid were in the range of 0.7~29.3mg%. The major amino acids in the sap of Gorosoe were taurine, serine, glutamic acid and aspartic acid in decreasing order. Taurine contents in the sap of Gorosoe and Sugar Maple was found to be the dominant amino acid.
This experiment was conducted to investigate the effects of dried mealworm (Tenebrio molitor larva) on growth performance, nutrient digestibility and blood profiles in weaning pigs. A total of 120 weaning pigs ($28{\pm}3days$ and $8.04{\pm}0.08kg$ of body weight) were allotted to one of five treatments, based on sex and body weight, in 6 replicates with 4 pigs per pen by a randomized complete block design. Supplementation level of dried mealworm was 0%, 1.5%, 3.0%, 4.5%, or 6.0% in experimental diet as treatment. Two phase feeding programs (phase I from 0 day to 14 day, phase II from 14 day to 35 day) were used in this experiment. All animals were allowed to access diet and water ad libitum. During phase I, increasing level of dried mealworm in diet linearly improved the body weight (p<0.01), average daily gain (ADG) (p<0.01) and average daily feed intake (ADFI) (p<0.01). During phase II, ADG also tended to increase linearly when pigs were fed higher level of dried mealworm (p = 0.08). In addition, increasing level of dried mealworm improved the ADG (p<0.01), ADFI (p<0.05) and tended to increase gain to feed ratio (p = 0.07) during the whole experimental period. As dried mealworm level was increased, nitrogen retention and digestibility of dry matter as well as crude protein were linearly increased (p = 0.05). In the results of blood profiles, decrease of blood urea nitrogen (linear, p = 0.05) and increase of insulin-like growth factor (linear, p = 0.03) were observed as dried mealworm was increased in diet during phase II. However, there were no significant differences in immunoglobulin A (IgA) and IgG concentration by addition of dried mealworm in the growth trial. Consequently, supplementation of dried mealworm up to 6% in weaning pigs' diet improves growth performance and nutrient digestibility without any detrimental effect on immune responses.
The aim of this study was to evaluate the effect of replacing corn grain for sugar cane molasses (MO) or glucose syrup (GS) in the starter concentrate on performance and metabolism of dairy calves. Thirty-six individually housed Holstein male calves were blocked according to weight and date of birth and assigned to one of the starter feed treatments, during an 8 week study: i) starter containing 65% corn with no MO or GS (0MO); ii) starter containing 60% corn and 5% MO (5MO); iii) starter containing 55% corn and 10% MO (10MO); and iv) starter containing 60% corn and 5% GS (5GS). Animals received 4 L of milk replacer daily (20 crude protein, 16 ether extract, 12.5% solids), divided in two meals (0700 and 1700 h). Starter and water were provided ad libitum. Starter intake and fecal score were monitored daily until animals were eight weeks old. Body weight and measurements (withers height, hip width and heart girth) were measured weekly before the morning feeding. From the second week of age, blood samples were collected weekly, 2 h after the morning feeding, for glucose, ${\beta}$-hydroxybutyrate and lactate determination. Ruminal fluid was collected at 4, 6, and 8 weeks of age using an oro-ruminal probe and a suction pump for determination of pH and short-chain fatty acids (SCFA). At the end of the eighth week, animals were harvested to evaluate development of the proximal digestive tract. The composition of the starter did not affect (p>0.05) concentrate intake, weight gain, fecal score, blood parameters, and rumen development. However, treatment 5MO showed higher (p<0.05) total concentration of SCFAs, acetate and propionate than 0MO, and these treatments did not differ from 10MO and 5GS (p>0.05). Thus, it can be concluded that the replacement of corn by 5% or 10% sugar cane molasses or 5% GS on starter concentrate did not impact performance, however it has some positive effects on rumen fermentation which may be beneficial for calves with a developing rumen.
Objectives: This study compared the differences of postmenopausal women's bone mineral density in relation to the degree of obesity, metabolism index and dietary factors that affect bone mineral density. Methods: The subjects included in the study are 39 postmenopausal women of normal weight with body mass index less than $25kg/m^2$ and 32 postmenopausal who are obese. Anthropometry and biochemical analysis were performed and nutrient intakes and DQI-I were assessed. Results: Normal weight women were $56.03{\pm}3.76years$ old and obese women were $58.09{\pm}5.13years$ old and there was no significant difference in age between the two groups. The T-score of bone mineral density was $0.03{\pm}1.06$ in normal weight women and $-0.60{\pm}1.47$ in obese women and this was significantly different between the two groups (p<0.05). Blood Leptin concentration was significantly lower in normal weight women ($6.09{\pm}3.37ng/mL$) compared to obese women in ($9.01{\pm}4.99ng/mL$) (p<0.05). The total score of diet quality index-international was $70.41{\pm}9.34$ in normal weight women and $64.93{\pm}7.82$ in obese women (p<0.05). T-score of bone mineral density showed negative correlations with percentage of body fat (r = -0.233, p=0.05), BMI (r = -0.197, p=0.017), triglyceride (r = -0.281, p=0.020) and leptin (r = -0.308, p=0.011). The results of multiple regression analysis performed as the method of entry showed that with 22.0% of explanation power, percentage of body fat (${\beta}=-0.048$, p<0.05), triglyceride (${\beta}=-0.005$, p<0.05) and HDL-cholesterol (${\beta}=0.034$, p<0.01), moderation of DQI-I (${\beta}=-0.231$, p<0.05) affected T-score significantly. Conclusions: The results of the study showed that obese women have less bone density than those with normal weight women. In addition, the factor analysis result that affect bone mineral density showed that intake of fat is a very important factor. Therefore, postmenopausal women need to maintain normal weight and manage blood lipid levels within normal range. They also need to take various sources of protein and reduce consumption of empty calorie foods that have high calories, fat, cholesterol and sodium.
The purpose of this study was to investigate the effects of cucumber beverage intake on fluid-regulating hormones and CRP in amateur marathoners between the ages of 47~49. Among research subjects, 8 male middle-aged marathoners who have completed the full marathon course over 5 times and who have run for over 50 months were selected. In two marathon races, they received firstly water and secondly cucumber beverage: 10 ml before the race, 50 ml every 5 km, and 200 ml after the race, adding up to 10 drinks and 710 ml in total amount of beverage taken. For statistics, one-way ANOVA within the group was conducted through SPSS 12.0; for post-examination, Duncan was utilized; and for inter-group examination, an independent t-test was used. Before, right after, and after the marathon, the cucumber beverage intake group had a significantly decreased serum ADH concentration compared to the water intake group. Both the cucumber beverage and water intake groups had significantly increased serum rennin levels before, right after, and after the marathon. Both the cucumber beverage and water intake groups had significantly increased aldosterone before, right after, and after the marathon. CRP levels didn't show change. In conclusion, intake of cucumber beverage during a marathon race was found to help with fluid-regulating hormones. This research has attempted to continue to study the influence on hormones that control body fluids.
This study is to examine nutrients in the persimmon peel develop processed products and analyze their quality properties. The persimmon peel powder was rich in nutrients with 4.35% of moisture, 3.01% of protein, 1.02% of lipid, 2.02% of ash and $5.7^{\circ}Brix$ of Sugar concentration as well as 82.5 mg% of total carotenoid. As far as quality properties of Sulgidduk were concerned when the 5% addition persimmon peel resulted in the highest level of watery content and the more colors were added the lower the L value became and the higher a and b values. As the result of measurements using a texture analyzer, hardness, adhesiveness, cohesiveness, springiness and chewiness property decreased flexibility increased. The sensory test results revealed that the 3% added persimmon peel Sulgidduk was the best.
To improve the germination performance of rice seeds under suboptimal temperature, osmopriming with PEG-6000 was examined. Optimal PEG-6000 concentration to improve germination was 20% PEG-6000 solution, and rice cultivars used in this experiment were Sinunbongbyeo, Gancheokbyeo, Dongjinbyeo. The water content of seeds after soaking for 60 hours in the PEG solution is similar to that of seeds after soaking for 24 hours in the distilled water. Germination performance of the soaked seeds in the PEG solution was higher than that of the soaked seeds in the distilled water or the control, especially under suboptimal temperatures. Electrical conductivity of the soaked seeds in the PEG solution was lower than that of the soaked seeds in the distilled water or the control, and total dehydrogenase activity of the soaked seeds in the PEG solution was higher than that of the soaked seeds in the distilled water or the control. SDS-PAGE results of soluble protein from the embryos of seeds primed differently showed darker band in the seeds soaked in the PEG solution than the seeds soaked in the distilled water or the control at the 68 KD region. Also, band patterns of peroxidase and esterase of embryos soaked in the PEG solution were darked than that of embryos soaked in the distilled water or the control at the Rf 0.94 and Rf 0.87, respectively.
This study was designed to investigate the effect of iron supplementation on the iron nutritional status and anemia of high school girls in Korea. One hundred thirty-five female students residing in Ulian metropolitan city in Korea diagnosed as having anemia or iron deficiency participated in this study. One or two tablets of iron medicine(80-160 mg Fe as ferrous sulfate/day) were administered to all participants for 3 months. Subjects were evaluated with a questionaire, measurement of hematological indices before and after iron supplementation. The average height and weight of respondents were 161.62 $\pm$ 4.68 cm and 53.87 $\pm$ 6.10 kg, respectively. Daily intakes of energy were 1597.8 $\pm$ 302.35 kcal(76.0% RDA). Iron intakes were 13.72 $\pm$ 4.17 mg (76.3% of RDA) and calcium intakes were 580.74 $\pm$ 177.21(72.5% of RDA) before iron supp]ementation. At baseline, 63% of all participants had depleted store(serum ferritin 12 ug/ml and/or transferrin saturation(TS) < 14%). After iron supplementation, this proportion declined to 19.3%. 55.6% of subjects had 12 ug/m1 of basal ferritin concentration before iron supplementation, and this proportion declined to 16.3% after iron supplementation. The basal hemoglobin(Hb) concentrations were 12.13 $\pm$ 1.01 g/dl and they increased to 12.79 $\pm$ 0.81 g/dl, which showed significant difference artier iron supplementation(p < 0.001). The basal ferritin and TS(%) were 13.24 $\pm$ 11.66 ng/ml, 18.42 $\pm$ 10.12% and they significantly increased to 32.95 $\pm$ 21.14 ng/ml, 33.53 $\pm$ 16.64%, respectively(p < 0.001). The basal total iron binding protein(TIBC) were 467.81 $\pm$ 97.24 ug/dl and they significantly decreased to 325.05 $\pm$ 48.89 ug/dl(p < 0.001) after iron supplementation. The number of tablets administered was positively correlated with serum iron(t = 0.553, p < 0.01), serum ferritin(t = 0.557, p < 0.01), TS(%)(t = 0.588, p < 0.01) and negatively correlated with TIBC(t= -0.409, p <0.01). The anemia symptoms such as ‘Shortening of breath when going upstairs(p < 0.01)’, ‘Tired out easily(p < 0.01)’, ‘Feeling blue(p < 0.001)’, ‘Decreased ability to concentrate(p < 0.01)’, and ‘Poor memory(p < 0.001)’improved significantly after iron supplementation. In this study, daily iron supplementations were efficacious in improving the iron status and anemic symptoms of female high school students. Regular check-ups and nutrition education for adolescents are necessary because of their vulnerability to iron deficiency. Further studies are needed to determine the minimum effective dose of iron and to examine the adverse effect of long-term iron supplementation.
Su, Weipeng;Xu, Wen;Zhang, Hao;Ying, Zhixiong;Zhou, Le;Zhang, Lili;Wang, Tian
Nutrition Research and Practice
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v.11
no.2
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pp.121-129
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2017
BACKGROUND/OBJECTIVES: The study was conducted to evaluate the effects of dietary leucine supplementation on mitochondrial biogenesis and energy metabolism in the liver of normal birth weight (NBW) and intrauterine growth-retarded (IUGR) weanling piglets. MATERIALS/METHODS: A total of sixteen pairs of NBW and IUGR piglets from sixteen sows were selected according to their birth weight. At postnatal day 14, all piglets were weaned and fed either a control diet or a leucine-supplemented diet for 21 d. Thereafter, a $2{\times}2$ factorial experimental design was used. Each treatment consisted of eight replications with one piglet per replication. RESULTS: Compared with NBW piglets, IUGR piglets had a decreased (P < 0.05) hepatic adenosine triphosphate (ATP) content. Also, IUGR piglets exhibited reductions (P < 0.05) in the activities of hepatic mitochondrial pyruvate dehydrogenase (PDH), citrate synthase (CS), ${\alpha}$-ketoglutarate dehydrogenase (${\alpha}$-KGDH), malate dehydrogenase (MDH), and complexes I and V, along with decreases (P < 0.05) in the concentration of mitochondrial DNA (mtDNA) and the protein expression of hepatic peroxisome proliferator-activated receptor-${\gamma}$ coactivator $1{\alpha}$ (PGC-$1{\alpha}$). Dietary leucine supplementation increased (P < 0.05) the content of ATP, and the activities of CS, ${\alpha}$-KGDH, MDH, and complex V in the liver of piglets. Furthermore, compared to those fed a control diet, piglets given a leucine-supplemented diet exhibited increases (P < 0.05) in the mtDNA content and in the mRNA expressions of sirtuin 1, PGC-$1{\alpha}$, nuclear respiratory factor 1, mitochondrial transcription factor A, and ATP synthase, $H^+$ transporting, mitochondrial F1 complex, ${\beta}$ polypeptide in liver. CONCLUSIONS: Dietary leucine supplementation may exert beneficial effects on mitochondrial biogenesis and energy metabolism in NBW and IUGR weanling piglets.
Kim, Hanbeen;Lee, Hyo Gun;Baek, Youl-Chang;Lee, Seyoung;Seo, Jakyeom
Journal of Animal Science and Technology
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v.62
no.1
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pp.31-42
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2020
The aim of this study was to investigate the effects of 3-nitrooxypropanol (NOP) on gas production, rumen fermentation, and animal performances depending on animal type using a meta-analysis approach. A database consisted of data from 14 studies, 18 experiments and 55 treatments. The supplementation of NOP linearly decreased methane (CH4) emissions [g/kg dry matter intake (DMI)] regardless of animal type and length of experimental period (beef, p < 0.0001, R2 = 0.797; dairy, p = 0.0003, R2 = 0.916; and long term, p < 0.0001, R2 = 0.910). The total volatile fatty acids (VFA) concentration and the proportion of acetate, based on beef cattle database, were significantly decreased with increasing NOP supplementation (p = 0.0015, R2 = 0.804 and p = 0.0003, R2 = 0.918), whereas other individual VFAs was increased. Based on the dairy database, increasing levels of NOP supplementation linearly decreased proportion of acetate (p = 0.0284, R2 = 0.769) and increased that of valerate (p = 0.0340, R2 = 0.522), regardless of significant change on other individual VFAs. In animal performances, the DMI, from beef cattle database, tended to decrease when the levels of NOP supplementation increased (p = 0.0574, R2 = 0.170), whereas there was no significant change on DMI from dairy cattle database. The NOP supplementation tended to decrease milk yield (p = 0.0606, R2 = 0.381) and increase milk fat and milk protein (p = 0.0861, R2 = 0.321, p = 0.0838, R2 = 0.322). NOP is a viable candidate as a feed additive because of its CH4 mitigation effects, regardless of animal type and experiment period, without adverse effects on animal performances.
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