• Food Science of Animal Resources
• /
• v.38 no.5
• /
• pp.1101-1108
• /
• 2018

The aim of this study was to investigate the effects of dry-aging (DA) and the cooking process on the myofibril protein functionalities and in vitro digestibility of proteins in beef loin. Six sirloins from beef were dry-aged for 28 d, and the control group (n=6) was analyzed 2 d postmortem for this study. Dimensional changes (reduction of thickness and surface shrinkage) after cooking were significantly greater in the control group than the DA group, whereas the shear force of the DA group was significantly lower than that of the control. Effect of cooking on aggregation, hydrophobicity, and in vitro digestibility were significantly higher in the DA group than in the control. After cooking, the protein in DA sirloins was more oxidized than in the control samples. According to the sodium dodecyl sulfate-polyacrylamide gel electrophoresis result, the low molecular weight bands (below 17 kDa) increased in the DA group, finding that the protein characteristics of dry-aged beef was affected by cooking.

• Food Science and Biotechnology
• /
• v.18 no.6
• /
• pp.1311-1315
• /
• 2009

The objective of this study was to investigate the effects of sesaminol glucosides (SG) on age-related cognitive deficits in senescence-accelerated mice P8 (SAMP8). Male SAMP8 (9 month-old) were randomly divided into 3 groups and received diets containing 0, 0.25, or 0.5% SG for 12 weeks. Step-through latency of the SAMP8 control group was higher than that of the senescence-accelerated resistant mice (SAMR) group, whereas it was lowered in the SG-supplemented group on the passive-avoidance test. In the Morris water maze, the escape latency of the SAMP8 control group was increased and recovered in the 0.5% SG-supplemented group. The SG supplementation significantly decreased thiobarbituric acid reactive substance (TBARS) levels in brains of the SAMP8. On the other hand, catalase, superoxide dismutase, and glutathione peroxidase activities in brains of the SG supplemented group decreased compared with the SAMP8 control group. These results suggest that SG could attenuate cognitive deficits caused by aging through its antioxidant capacity.

• Journal of Nutrition and Health
• /
• v.13 no.1
• /
• pp.1-7
• /
• 1980

For the purpose of ascertaining the status of physical growth and food habit of obese children, a study was made of 1086 primary school children ranging between 2nd and 3ra grades living in Kwang-ju City in Korea. 66 subjects were selected from an anthropometrical point of view and they were classified into two groups, an obese group and a control group, according to their relative body weight. Food habits of each group were observed by means of questionnaires. In the statistical analysis of the data, percentage calculation and T-score test were used. The results of the study can be summarized as follows; 1) Viewed from relative body weight, 3.0% of the 1,086 subjects turned out to be obese, and the measure of skinfold showed 2.4%. 2) Physical growth of the obese growth is superior to that of the control group in all aspects. 3) The average score of food preference by means of Hedonic scaling method by the obese group is 3.90, while that of food preference by the control group is 3.76. The most favored food by the obese group is ice cream (4.91), while that of most favored food by the control group is banana (4.75). The statistically meaningful foods of the two groups are cucumber (0.02>p>0.01), orange (p<0.02), peach(0.05>p>0.02), watermelon (p <0.01) and ice cream (p<0.01). The score of food preference for protein foods by the obese group is 3.78 and that of food preference by the control group is 3.57(0.05>p>0.02). The excessive food intake per meal of the obese group is 45.4%, while that of the control group is 19.7% (0.05>p>0.02). Ratio of taking severely unbalanced food by the obese group is 15.1%, while that of the control group is 50.0% (p<0.01). 4) 30.3% of mothers of the obese group is fat, while 15.1% of mothers of the control group is fat (p<0.01). Concerning body weight at birth, 90.9% of the obese group and 63.6% of the control group are above-average weight. (p <0.01). From the results shown above, the obesity in children is almost due to food. It is hoped, therefore, that overeating be discouraged through the nutrition education.

• Food Science of Animal Resources
• /
• v.35 no.5
• /
• pp.660-668
• /
• 2015

This study was performed to investigate the chemical composition, mineral status, oxidative stability, and texture attributes of dry-cured ham from pigs fed processed sulfur (S, 1 g/kg feed), and from those fed a basal diet (CON), during the period from weaning to slaughter (174 d). Total collagen content and soluble collagen of the S group was significantly higher than that of the control group (p<0.05). The pH of the S group was significantly higher than that of the control group, whereas the S group had a lower expressible drip compared to the control group. The S group also showed the lower lightness compared to the control group (p<0.05). In regard to the mineral status, the S group had significantly lower Fe²⁺ and Ca²⁺ content than the control group (p<0.05), whereas the proteolysis index of the S group was significantly increased compared to the control group (p<0.05). The feeding of processed sulfur to pigs led to increased oxidative stability, related to lipids and pigments, in the dry-cured ham (p<0.05). Compared to the dry-cured ham from the control group, that from the S group exhibited lower springiness and gumminess; these results suggest that feeding processed sulfur to pigs can improve the quality of the texture and enhance the oxidative stability of dry-cured ham.

• Journal of Nutrition and Health
• /
• v.33 no.1
• /
• pp.68-79
• /
• 2000

This study was developed the nutrition education program for kindergarten children and was evaluated its educational effect by 'Non-equivalent control group design'. Nutrition education program was developed on the basis of the concept which consisted of nutrition, nutrients, food handling, life cycle and social$.$psychological needs. And it was developed on the basis of the theme which consisted of kind of foods, relation between food and body, importance of food, food and sanitation, food and environment, Korean traditional food and good table manners. Subjects consisted of 157 kindergarten children, with 48 in control group and 109 in treatment group. All the subjects completed a pretest and a posttest and the posttest means between control and treatment group were compared. The control group had a adjusted posttest mean score of nutrition knowledge of 50.64 and the treatment group had that of 75.19 and the difference was significant(p<0.001). The control group had a adjusted posttest mean score of food attitude of 65.49 and the treatment group had that of 85.40 and the difference was significant(p<0.001). (Korean J Nutrition 33(1) : 68-79, 2000)

• Korean Journal of Acupuncture
• /
• v.22 no.3
• /
• pp.1-15
• /
• 2005

Objectives: This research was performed to investigate the effect of invasive low level laser acupuncture therapy(LLLAT) at Yolgyol(LU7), Yogu(LR5) and Yolgyol+Yogu(LU7+LR5) on weight gain, food intake, food efficiency, lipid metabolism, atherogenic index, HTR(HDL-cholesterol to total cholesterol ratio) and liver function in hyperlipidemia rats. Methods : Experimental groups were divided into high fat diet group(Control group), high fat diet and LLLAT at LU7(LU7 group), high fat diet and LLLAT at LR5(LR5 group), LLLAT at LU7 and LR5(LU7+LR5 group). Animals was treated by the LLLAT at 30mW-5min once a 2day during 5 weeks. Results: Body weight was decreased significantly in LU7+LR5 group when compared with control group. Food intake was increased significantly in LU7, LR5, LU7+LR5 group when compared with control group. Food efficiency was decreased significantly in LU7, LR5, LU7+LR5 group when compared with control group. In the lipid metabolism, total cholesterol and HDL-cholesterol was decreased significantly in LU7+LR5 group, LDL-cholesterol and phospholipids were decreased significantly in LR5, LU7+LR5 group, triglyceride and fee fatty acid were decreased significantly in LU7 group when compared with control group. Atherogenic index was decreased significantly in LU7, LR5, LU7+LR5 group when compared with control group. HTR was increased significantly in LU7 group when compared with conool group. In the liver function, the significance was not showed in AST and ALT, ALP was decreased significantly in LU7+LR5 group when compared with control group. Conclusions: LLLAT at LU7 and LR5 maybe can manage hyperlipidemia by controlling body weight, food intake, food efficiency ratio and lipid metabolism.

• The Korean Journal of Food And Nutrition
• /
• v.36 no.1
• /
• pp.25-32
• /
• 2023

To increase antioxidant activity and physicochemical quality characteristics, four kinds of berries (blueberry (BEB), blackberry (BKB), cranberry (CNB), raspberry (RSB)) with antioxidant activities were used to replace beet (B) in existing ABC juice. In the experimental group, the pH was decreased while the content of soluble solids was increased significantly. Total polyphenol content was significantly increased in all experimental groups compared to that in the control group. The control group had the lowest polyphenol content at 14.723 ㎍ GAE/g, whereas the blackberry replacement group had the highest polyphenol content at 67.12 ㎍ GAE/g. The total flavonoid content was the lowest in the control group at 8.98 ㎍ QE/g but the highest in the blackberry group at 50.47 ㎍ QE/g. All experimental groups showed significantly higher antioxidant activities than the control group. DPPH & ABTS radical scavenging activities were the lowest in the control group at 15.69% and 19.55%, respectively, but the highest in the blackberry group at 48.24% and 59.43%, respectively. SOD-like activity was also the lowest in the control group at 14.12%, but the highest in the blackberry group at 48.18%. When comparing experimental groups, antioxidant activities (DPPH, ABTS, SOD) and antioxidant components (total polyphenols and total flavonoids) were in the order of BKB > CNB > RSB > BEB > Control. In conclusion, the new ABC juice containing four types of berries is enriched in antioxidants with significantly improved antioxidant activities and physicochemical quality characteristics.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.19 no.5
• /
• pp.1267-1271
• /
• 2005

To investigate the effect of the frequently used anti-obese medicine GyeongshinhaeGihwan 1 (GGT1), in food intake, body weight and food efficiency ratio for high fat diet induced obese male rats. Also, to value the diffences between GyeogshinhaeGihwan 1 and FDA approved Sibutramine in anti-obesity effect. High fat diet induced obese male rats were classified into four groups - positive control group, negative control group, GyeongshinhaeGihwan 1 group and Sibutramine group - and their food intake and body weight were observed for eight weeks. Anti-obesity effect was estimated with food efficiency ratio which is calculated by weight inclose divided by food intake. The result shown in Fig. 2 suggests that the GyeongshinhaeGihwan 1 group is more effective on food intake control than the Sibutramine group. Average weight variation shows an increase in both positive/negative control group and medication group. Also, the result in Fig. 3 indicates that average food efficiency ratio decreases contrary to the average weight variation. In addition, repeatedly estimated variance analysis on average food efficiency ratio of the GyeonushinhaeGihwan 1 group shows (1) the result corollary to the time of observation of food efficiency ratio was effective under 0.05 variance (P-value 0.000). The differences between each groups were not shown under 0.05 variance. Compared to the control group, medication groups were visually more effective on food intake control. Although both groups had a tendency of weight increasing, food efficiency ratio considering food intake and weight variation rate showed a decrease. Especially, the medication group variated less than the control group corollary to the point of time, proving the individuals react less sensitive to the medicine. Moreover, there were no differences in the anti-obesity effect between GyeongshinhaeGihwan 1 group and Sibutramine group studied by repeatedly estimating variance analysis(P-value: 0.610). When considering Sibutramine as an anti-obesity medicine approved by FDA, the point of being classifed in the same group proves the effect of GyeongshinhaeGihwan 1 as an anti-obesity medicine.

• Food Science of Animal Resources
• /
• v.36 no.3
• /
• pp.397-404
• /
• 2016

The objective of this study was to determine the effect of dietary supplementation with whey powder (WP, 1g/kg feed) from weaning to slaughter (150 d) on dry-aged loin quality of pigs. Fifty-eight pigs were randomly divided into two dietary treatment groups (seven replications of four pigs per treatments). Basal diet with 0.1% whey powder was supplied to the WP group. Basal diet was used for the control group (CON). Diet whey protein did not appear to influence the moisture or protein contents. However, ash and fat contents were significantly (p<0.05) decreased in the WP group compared to the control group. Drip loss was significantly (p<0.05) lower in the WP group than that of the control group. Increasing redness with decreasing lightness was found in the inner loin of the WP group. Calcium and iron contents in the WP group were significantly higher than those in the control group. Protein degradation was higher in the WP group than that in the control group (p<0.05), whereas shear force was lower in the WP group than that in the control group (p<0.05). In conclusion, the basal diet supplemented with 0.1% whey powder influence negatively the lipid oxidation of meat whereas the texture property and mineral composition of meat from whey powder fed pigs are developed.

• Korean Journal of Acupuncture
• /
• v.24 no.1
• /
• pp.113-129
• /
• 2007

Objectives : This research was performed to investigate the effect of acupuncture using invasive low level laser therapy (LLLT) at Yolgyol (LU7) + Yogu (LR5) on weight gain, food intake, food efficiency, lipid metabolism, atherogenic index, HTR (HDL-cholesterol to total cholesterol ratio) and morphological change of hepatic tissue in hyperlipdemia rats. Methods : Experimental groups were divided into high fat diet group (Control group), high fat diet and acupuncture therapy group at LU7 + LR5 (AT group), high fat diet and acupuncture group using 10 mW LLLT at LU7 +LR5 (LA10 group), high fat diet and acupuncture group using 20 mW LLLT at LU7+LR5(LA20 group), high fat diet and acupuncture group using 60 mW LLLT at LU7 + LR5 (LA60 group), once per 3 days during 9 weeks. Results : Body weight was decreased significantly in AT and LA20 groups compared with Control group. Food intake was increased significantly in LA60 group compared with Control group. Food efficiency was decreased significantly in LA10, LA20 and LA60 groups compared with control group. In the lipid metabolism, total cholesterol was decreased significantly in AT, LA10, LA20 and LA60 groups, triglyceride was decreased significantly in LA10, LA20 and LA60 groups, TG/HDL-cholesterol ratio was decreased significantly in LA 60 group compared with control group. In the morphological change, hepatic tissue were not showed balloning degeneration and irregular arrangement of hepatic cell in LA10 and LA20 groups with control group. Conclusions : Acupuncture using LLLT at LU7+LR5 can manage hyperlipemia by controlling body weight, food intake, food efficiency ratio and lipid metabolism.