• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.2
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• pp.165-171
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• 2010

This study was to investigate physiological activities of Cucurbita moschata Duch. extracts by various extraction conditions. Electron donating ability of 50% ethanol extract was 52.37% at 50 mL/g, which was higher than those of 1.0% and 0.1% L-ascorbate solutions. SOD-like activities were the most effective in all of the samples at 50 mL/g, which were barely detectable. Total polyphenol contents were the highest at 50 mL/g for all fiber extracts. The nitrite scavenging effects were the most effective in pH 1.2 at more than 80%. Tyrosinase-inhibitory activities ranged at fewer than 19%. The results will be useful for understanding of the physiological activities of Cucurbita moschata Duch. extracts.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.5
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• pp.529-534
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• 2009

Physiological activities of mistletoe extracts were examined. Total polyphenol contents, electro-donating ability, SOD-like activity, nitrite-scavenging ability and tyrosinase of mistletoe extracted with water, 50%, and 100% ethanol were determined. Total polyphenol contents of powder extracts were higher than slice extracts. EDAs showed over 90% at powder extracts. Especially mistletoe extracts with 50% ethanol were higher than water extracts. SOD-like activities of water, 50% and 100% ethanol extracts of all samples were $23.71{\sim}33.4%$ lower than those of 1.0% and 0.1% L-ascorbate solutions. Nitrite-scavenging activities at pH 1.2 were the most effective in water, 50% and 100% ethanol extracts. The results will be useful for understanding the physiolosical activities of mistletoe extracts.

• Journal of People, Plants, and Environment
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• v.23 no.3
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• pp.377-385
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• 2020

Background and objective: In the Republic of Korea, military service is mandatory. Some of new recruits have the stress from the special environment, which could cause psychological maladjustment. The military forces have operated education programs such as green camp and healing camp. The study was conducted to investigate changes in psychological and physiological stress by conducting forest healing activities along with plant scent treatment for soldiers participating in a green camp. Methods: A total of 52 soldiers were participated including maladjustment soldiers and those recommended by their military units to protect the unfit soldiers who participated in forest healing activities in the green camp. The programs that were certified by the Korea Forest Service between 2014 and 2019, and were applied for stress reduction and relaxation training were classified into stress-coping programs and forest experience programs. Post-hoc surveys and cortisol measurements were carried out. Results: Green camp soldiers experience and differences in the level of stress responses were found to be very statistically significant between the treatment and control groups. The techniques for coping with stress were not significantly different in the control group, and the treatment group showed statistically significant results. In addition, the results of analyzing changes in the concentration of cortisol and measuring physiological stress were very statistically significant in forest healing activities at 4 p.m. Conclusion: Once green camp soldiers face stressful situations, forest healing programs using forest plant scents for green camp soldiers can have positive responses and forest healing activities can reduce psychological and physiological stress responses, improving maladjustment behaviors caused by stress and positively affecting the reduction of cortisol.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.11a
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• pp.91-95
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• 2001

In this study, we estimated the behavior of the diversity of physiological responses under varied physical environmental factors by measuring variations of heart rate variability (HRV), an index of activity of cardiac autonomic control. Seven healthy young male adults consented and participated in the study. The environmental conditions consisted of thermal, lighting, and acoustic conditions. Two components of HRV were measured. one was the low frequency (LF) component of HRV, which provided a quantitative index of the sympathetic and parasympathetic (vagal) activities controlling the heart rate (HR). The other component measured was the high frequency (HF) component, which provided an index of the vagal tone. The percent contribution of physical environmental factors to the variations in HRV indices were calculated by ANOVA. The contribution of physical environmental factors to the variations in HR was higher than the contribution of HF and LF. However, the contribution of these factors was lower than the contribution related with individual difference in all indices. This result showed that the individual diversity of physiological responses is not a negligible quantity.

• Journal of Microbiology and Biotechnology
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• v.13 no.1
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• pp.125-133
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• 2003

Chemical properties and physiological activities of the freeze-dried synnemata of Beauveria bassiana were examined. A proximate analysis showed that the synnemata consisted mainly of carbohydrate (49.86%), protein 11.36%), and a moisture content of 30.64%. It contained a low amount of crude ash (4.76%) and fat (3.38%). The carbohydrate was composed mainly of mannose (52.3%), galactose (31.5%), glucose (13.2%), and rhamnose (3%). Trace amounts of arabinose, xylose, and fructose were present. Major amino acids In the synnemata were glutamic acid, glycine, aspartic acid, arginine, threonine, alanine, valine, leucine, lysine, and aspartic acid with the amounts of 30.42, 25.22, 17.17, 15.12, 12.65, 15.23, 12.47, 11.47, 14.24, and 17.17 mg/g, respectively. Among extracts from the synnemata, the hot-water extract showed 67% of anticomplementary activity compared to that of the positive control, followed by ethyl acetate extract (17%) and methanol extract (15%). The hot-water extract also had anticoagulant activity with 55 sec of coagulating time and this fraction exhibited the most potent Intestinal immune system modulating activity. The methanol extract showed the highest inhibitory activity (25%) on the 12-O-tetradecanoyl phorbol-13-acetate-induced superoxide ($O_2^-$) generation, followed by hot-water extract (18%) and ethyl acetate extract (10%). The data in the present study indicate that the extract of Beauveria bassiana synnemata contains some healthful chemical ingredients and it could provide beneficial physiological activities. These features of the synnemata should be of interest to the food industry as well as other industrial fields.

• The Korean Journal of Food And Nutrition
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• v.27 no.5
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• pp.962-970
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• 2014

This study was performed to compare the physiological effects of puffed snack on diabetic and geriatric diseases using miscellaneous cereals and grain crops. The puffed snacks were prepared with different amounts of miscellaneous cereals and grain crops (in ratios of 10%, 20%, and 30% of brown rice). Changes in the water soluble index, water absorption index, color, antioxidant activity, total polyphenol content acidity, ${\alpha}$-glucosidase inhibition activity, and sensory evaluation were also determined. As the cereal and crop contents increased, the value of the water soluble index increased while the water absorption index decreased, with the exception of glutinous foxtail and barnyard millets. With respect to color, lightness and yellowness decreased in concert with increases in the cereal and crop contents, whereas redness increased. Furthermore, the antioxidant activity and total polyphenol content as well as ${\alpha}$-glucosidase inhibition activity increased remarkably with increasing concentrations of sorghum. There was no significant difference in the physiological activities depending on the addition of millet, barley and barnyard millets. In sensory evaluation, the puffed snacks containing sorghum, millet, and glutinous foxtail millet received higher values than other samples. Altogether, our results indicate that puffed snacks containing 10~20% sorghum could be suitable as ingredients for improving sensory and physiological activities in diabetic and geriatric diseases.

• The Korea Journal of Herbology
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• v.20 no.3
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• pp.51-58
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• 2005

Objectives : The purpose of this research was physiological activities and investigate cytotoxicity of Sunbanghwalmyung-um extract. Methods : Physiological activity and a cytotoxicity were examined through the hot water and ethanol extracts from Sunbanghwalmyung-um and its ingredient. Results : The electron donating ability(EDA) was 66.9%, 71.3% in 1000 ppm water extract and ethanol extract. Above 90% from 1000 ppm ethanol extract showed a higher activities and it is Rhei Radix et Rhizoma, Lonicerae Flos, Gleditsiae Spina, Glycyrrhizae Radix, Myrrh. SOD-like activity was weak as 12.24%, 16.62% in 700 ppm. In water and ethanol extracts cytotoxicity were against G361, B16F10, MDA, A549, high cytotoxity over 70%. Rhei Radix et Rhizoma, Gleditsiae Spina, Trichosanthis Radix, Paeoniae Radix Rubra showed high cytotoxicity in water and ethanol extracts. Conclusions : We observed physiological activities and investigated cytotoxicity of Sunbanghwalmyung-um and its ingredients. The results also demonstrated in food or cosmetic industry.

• The Korean Journal of Community Living Science
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• v.20 no.4
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• pp.549-558
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• 2009

This study examined the basic information on the native pear c.v. 'Baekwoon' grown in Mt. Baekwoonsan, Gwangyang, to develop as a local specialty product. the sensory characteristics, chemical compositions, and physiological activities of 'Baekwoon' pear were examined and compared with those of 'Niitaka' pear. Hardness of 'Baekwoon' pear was 19.30N, which was higher than 'Niitaka'. The sugar content of 'Baekwoon' was 11.5 $^{\circ}Brix$, which was lower than 'Niitaka'. The total amino acid contents of the fruit skin and flesh of 'Baekwoon' were 222 mg/100g dry weight (DW) and 130 mg/100g DW, respectively, which were much higher than those of 'Niitaka'. Especially, serine contents in fruit skin and flesh of 'Baekwoon' were 75.4 mg/100g DW and 40.2 mg/100g DW, respectively, which were significantly (p<0.05) higher than those of 'Niitaka'. However, physiological activities, such as total phenol content, DPPH radical scavenging activity, total flavonoid content and nitrite scavenging activity, of 'Baekwoon' were lower than or similar to those of 'Niitaka'. Consequently, vitamin and amino acid contents of 'Baekwoon' were better than those of 'Niitaka'. It is suggested to use fruit skin because of its good composition and physiological activities so that it helps to improve the quality and the biological activity.

• Food Science and Preservation
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• v.16 no.3
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• pp.442-448
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• 2009

Physiological activities in mulberry leaf and fruit were examined. Electron-donating ability (EDA), tyrosinase activity, SOD-like action (SOD), angiotensin I-converting enzyme-(ACE) inhibitory activity,and nitrite-scavenging ability of mulberry leaf and fruitextracted with water, with 50% (v/v) or with 100% ethanol, were measured. The EDA of mulberry leaf and fruit extracted with water or 50% (v/v) ethanol were greater (by 65.72-81.30%) than that with the 100% ethanol extract, whereas the activities of both former extracts were lower than those with 1.0% and 0.1% (both w/v) L-ascorbate solutions. The SOD-like activities of water, 50% (v/v) and 100% ethanol extracts of all samples were 24.13.26.80% lower than those of 1.0% and 0.1% (both w/v) L-ascorbate solutions. Nitrite-scavenging activity at pH 1.2 was observed in all extracts. The results further our understanding of the physiological activities of mulberry leaf and fruit extracts.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.7
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• pp.942-948
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• 2011

The physiological activities of extracts from the leaf, stem, and fruit of Cudrania tricuspidata were investigated. The electron-donating ability (EDA) of the 70% (v/v) ethanolic extract of stem was 90.20%; this was the highest value of all the extracts tested and higher than the L-ascorbate solutions. The total polyphenol contents were the highest in the leaf extracts under all extraction conditions. Especially, 70% (v/v) methanolic extract of leaf contained the highest total polyphenol content of 224.48 mg%. SOD-like activity showed the highest activity in water extract of leaf at 64.53%. Tyrosinase-inhibitory activities were the most effective in all extracts of fruit. ACE inhibitory activities were the highest in water extract of fruit. Nitrite-scavenging abilities under acidic conditions (pH 1.2 and pH 3.0) were the most effective in all the extracts. The results of this study will be useful for understanding the physiological activities of Cudrania tricuspidata extracts.