• KOREAN JOURNAL OF CROP SCIENCE
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• v.51 no.spc1
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• pp.113-118
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• 2006

The composition of fatty acids, minerals, total dietary fiber and vitamin $B_1,\;B_2$, in pigmented rice varieties were determined. Proximate composition and color were also compared among pigmented rice varieties. Crude protein contents of black rice were higher than those of red and white rice, especially, C3GHi line had the highest protein content. There were no significant differences in lipid and crude ash contents between pigmented and white rice. Black rice showed lower Hunter value L and b value compared with red, green and white rice. But, Green rice showed lower Hunter value a compared with black rice. Green rice showed the higher contents in total dietary fiber, vitamin $B_1\;and\;B_2$ compared with white and black rice. The major fatty acids of pigmented rice were palmitic acid, oleic acid and linoleic acid. The contents of oleic acid was similar to that of linoleic acid in white rice. Oleic acid contents was lower than linoleic acid in black rice, but higher in red rice. Most mineral contents of pigmented rice except Fe, Zn and Mn were higher than those of white rice. Especially, Green rice had the highest mineral content.

• Korean Journal of Poultry Science
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• v.19 no.1
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• pp.47-53
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• 1992

This study was carried out to determine the plasma vitamin $D_3$($D_3$) of 3 weeks old broiler chicks (Hubbard line), whose dorsal skin was exposed to different dose of 310 m UV light. The irradiated doses were 0~0.79 J/$\textrm{cm}^2$(6 doses$\times$5 replica＝30 chicks). The blood samples were collected 2 days after exposure. The lipid in plasma isolated was extracted with ethyl acetate. The $D_3$ was purified by $C_{18}$ cartridge and analyzed by HPLC. The average $D_3$ content in plasma of control chicks was 20 ng /$m\ell$. When 0.32 J/$\textrm{cm}^2$ of dose was treated, the highest amount of 43 ng /$m\ell$ was found among those of chicks experimented, corresponding to 2.15 times that of control. However, When more doses than 0.32 J/$\textrm{cm}^2$ were exposed to the skin, D$_3$ contents were decreased gradually. The similar to control level of $D_3$ was observed when 0.79 J/$\textrm{cm}^2$ was applied.

• Journal of Applied Biological Chemistry
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• v.53 no.4
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• pp.212-218
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• 2010

This study was aimed to investigate the contents of chemical components and the biological activity of fermented Omija (Schizandra chinensis Baillon.) beverage (FOB), which have not been well known up to now. General compositions and the contents of mineral and vitamin of FOB were lower than Omija before fermentation (OBF). In addition, most sucrose was digested into glucose and fructose in FOB. This suggests that the beneficial contents may be made from general compositions by fermentation, though more evidences are needed. Antioxidant activity of FOB was measured by using 2,2-diphenyl-l-picryl-hydrazyl (DPPH) free radical scavenging activity and superoxide dismutase-like activity (SODA). DPPH radical scavenging activity and SODA were increased in a dose-dependent manner, and were about 79.7% and 60.8% at four times diluted FOB (25% of FOB), respectively. The FOB also showed strong antibacterial activity on Escherichia coli. Beauty effect of FOB was demonstrated by the analysis of tyrosinase and elastase inhibitory activities, and they were remarkably increased in a dose-dependent manner. Tyrosinase inhibitory activity was about 82% at two times diluted FOB (50% of FOB) and elastase inhibitory activity was 78.2% at five times diluted FOB (20% of FOB). These results suggest that FOB has a strong antioxidant activity, and tyrosinase and elastase inhibitory effects.

• Journal of the Korean Society of Food Culture
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• v.20 no.4
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• pp.446-450
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• 2005

Chemical compositions such as total sugar, sulfate/total sugar, protein and 3,6-anhydrogalactose content of porphyran extracted from commercial laver, discolored laver and laver waste were measured. The total sugar contents of commercial laver, discolored laver and laver waste showed 54.5%, 45.7% and 56.2%, respectively. The total sugar of the commercial laver and laver waste were showed almost similar portion although that of discolored laver showed relatively lower level. The sulfate/total sugar contents showed 17.6%, 13.9% and 17.3%, and 3,6-anhydrogalactose contents showed 13.8%, 9.1% and 13.9% in commercial laver, discoloredlaver and laver waste respectively.

• Korean Journal of Food Science and Technology
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• v.46 no.1
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• pp.13-18
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• 2014

This study was designed to investigate the in vitro antioxidant potentials and the antioxidant components of 80% ethanolic extracts prepared from five edible spring flowers. The contents of total phenols (14.1-18.9 mg gallic acid equivalents/g of dry weight; DW), flavonoids (0.3-4.9 mg catechin equivalents), total carotenoids ($1.9-578.1{\mu}g$ ${\beta}$-carotene equivalents), and proanthocyanidins (2.8-23.5 mg catechin equivalents), were determined by spectrophotometry. In addition, the content of ascorbic acid (0.71-1.31 mg) was determined using HPLC with UV detection. All varieties of the flower examined showed antioxidant potential (1.2-46.1 mM Trolox equivalents/g DW), which was measured by the radical scavenging activity and the reducing power. Of the five flowers analyzed, Prunus avium L. showed the highest antioxidant activity. A strong correlation was found between the ascorbic acid ($r^2=0.75$), flavonoids ($r^2=0.71$), and total phenolic content ($r^2=0.64$) and the antioxidant parameters, suggesting that these components are likely significant contributors to the antioxidant capacity of the five spring flowers.

• Journal of Applied Biological Chemistry
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• v.52 no.2
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• pp.70-76
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• 2009

In order to find out antioxidant principle in pepper leaves, the contents of total ascorbic acid, total phenolic, and total flavonoid compounds from thirteen cultivars were measured by spectrophotometer. The contents of total phenolic and flavonoid compounds ranged from 231 mg/100 g to 516 mg/100 g and from 251 mg/100 g to 689 mg/100 g respectively. Antioxidant effects of pepper leaves were determined by three different in vitro bioassays including DPPH, ABTS, and FRAP. The relationship between ascorbic acid and antioxidant activity showed a positive correlation and significantly high correlation coefficients were observed between the contents of total phenolic and antioxidant assays including DPPH, ABTS, and FRAP. Especially, the antioxidant effect of pepper leaves was in parallel with the contents of flavonoid. These results suggest that flavonoid contents considerably affect antioxidant activity of pepper leaves. Among the various pepper cultivars, pepper leaves showed different level of antioxidant activity. This study will provide good information about antioxidant activity and their compounds of pepper leaves.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.9
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• pp.1394-1399
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• 2014

Quality characteristics of radish treated with red clay-processed materials (RCPM) were investigated. Two different types of treatments using RCPM including a control were farm-raised in identical environments. General components, texture, nutrients, and antioxidant activities were performed. For general components analysis, total amounts of crude fat and ash were higher in radish treated with RCPM than in control. RCPM-treated radish showed higher contents of minerals (P, Mg, K, Zn, Mn, and Na) and vitamins (vitamin C, thiamin, and riboflavin) than those of control. RCPM-treated radish exhibited higher DPPH radical scavenging activities and total polyphenol contents than those of control, indicating higher antioxidant activities of radish raised by RCPM. In the textural analysis following refrigeration for 4 weeks, RCPM-treated samples showed a more stable texture and higher hardness values than those of control. Therefore, these results indicate that RCPM can be used to produce high-value radish of premium quality.

• Journal of agricultural medicine and community health
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• v.41 no.2
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• pp.75-84
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• 2016

Background: Many studies focus on the causes of depression, but few assess the dietary intake. This study investigated the relationship between diet and prevalence of depression. Methods: This study used the data from the Korea National Health and Nutrition Examination Survey 2010. A total of 734 persons aged 20-65 years old in whom the presence or absence of depression was confirmed by doctor were analyzed. We analyzed associations between prevalence of depression and diet based on carbohydrate, fiber, calcium, iron, sodium, potassium, vitamin A, thiamine, riboflavin, niacin and vitamin C intakes for male and female groups. Results: There was no association between diet and prevalence of depression in the male group. For the female group, as fiber intake was increased, the prevalence of depression significantly decreased (odds ratio=0.923, 95% confidence interval=0.850-0.986), but there was no association between the other dietary intakes and prevalence of depression. Conclusion: The fiber intake and prevalence of depression are negatively correlated in women aged 20-65 years. A diet therapy including fiber may decrease the prevalence of depression.

• The Korean Journal of Food And Nutrition
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• v.10 no.3
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• pp.330-338
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• 1997

To examine the relationship between the causal infection of gastric cancer and lifestyle and nutritional status, we surveyed 183 persons, 102 female and 81 male, aged 40 years and over from August to October, 1996, in Chunchon area, Kang Won Do, Korea. For this purpose, we investigated Helicobacter pylori infection in the agricultural Korean adult and identified the effect of sex, age, smoking, alcohol consumption, economic status, occupation and lifestyle. Helicobacter pylori immunoglobulin G(IgG). Helicobacter pylori infection was present in 64.5% of total subjects, and 63.7% of female, 65.4% of male and its prevalence was increased with age, smoking, low education level, low monthly income, high childbirth. Some nutrients intakes were significantly difference between Helicobacter pylori infection positive(+) group and those negative(-) group. The negative Helicobacter pylori infection group were much more intaked energy, total protein, total fat(p<0.05), animal fat(p<0.05), Iron(p<0.001), vitamin A(p<0.01), vitamin C(p<0.05) than Helicobacter pylori positive infection group. But the calcium intakes were lower than positive(+) group.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.5
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• pp.661-667
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• 2014

To investigate the anti-diabetic and antioxidant effects of Opuntia humifusa cladodes, O. humifusa cladodes powder was extracted with 75% ethanol and fractionated with various solvents. Among the extracts fractionated with various solvents, ${\alpha}$-amylase and ${\alpha}$-glucosidase inhibitory activities of O. humifusa cladodes were highest ($89.94{\pm}1.15%$ and $29.01{\pm}3.03%$, respectively) in the ethyl acetate fraction. Further, total phenolic and flavonoid contents of the ethyl acetate fraction were the highest ($196.02{\pm}5.26$ and $114.00{\pm}10.03{\mu}g/mg$, respectively). DPPH and ABTS radical scavenging activities increased according to the concentration of O. humifusa cladodes extract, and those of the ethyl acetate fraction were the highest. Ferric reducing antioxidant powers of chloroform and the ethyl acetate fraction were higher than those of other fractions. Overall, the ethyl acetate fraction of O. humifusa cladodes showed the highest anti-diabetic and antioxidant effects. Results indicate that O. humifusa cladodes powder has potential as a useful ingredient with anti-diabetic and antioxidant effects.