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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society of Food Science and Nutrition
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Journal DOI :
The Korean Society of Food Science and Nutrition
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Volume & Issues
Volume 36, Issue 12 - Dec 2007
Volume 36, Issue 11 - Nov 2007
Volume 36, Issue 10 - Oct 2007
Volume 36, Issue 9 - Sep 2007
Volume 36, Issue 8 - Aug 2007
Volume 36, Issue 7 - Jul 2007
Volume 36, Issue 6 - Jun 2007
Volume 36, Issue 5 - May 2007
Volume 36, Issue 4 - Apr 2007
Volume 36, Issue 3 - Mar 2007
Volume 36, Issue 2 - Feb 2007
Volume 36, Issue 1 - Jan 2007
Selecting the target year
The Effects of Plebeiae Herba (Salvia plebeia R. Br.) on the Anticancer (in vitro) and Activation of Immune Cells
Bae, Man-Jong ; Ye, Eung-Ju ; Kim, Soo-Jung ; Kim, Jae-Myoung ; Yee, Sung-Tae ; Park, Eun-Mi ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 377~382
DOI : 10.3746/jkfn.2007.36.4.377
This study was designed to investigate the effect of Plebeiae Herba (Salvia plebeia R. Br.) on the proliferation of AGS cell lines and the activation of splenocytes. In an anti-cancer test using AGS cells, water and ethanol extracts of Plebeiae Herba inhibited the growth of AGS cell lines and morphological changes were also observed in a dose-dependent manner. Water extract of Plebeiae Herba showed growth-inhibitory effect of 43.3% at
and 69.7% at
. Ethanol extracts of Plebeiae Herba showed growth-inhibitory effect of approximately 37.3% for
and 75.8% for
. The Plebeiae Herba induced the proliferation of spleen cells and increased interleukin (IL)-2, interleukin (IL)-6 and tumor necrosis factor
. In conclusion, these results suggest that the Plebeiae Herba seems to have antiproliferationg effect against the AGS cell and acts as a potent immunomodulator.
Physiological Activities of Agaricus bisporus Extracts as Affected by Solvents
Lim, Tae-Soo ; Do, Jeong-Ryong ; Kwon, O-Jun ; Kim, Hyun-Ku ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 383~388
DOI : 10.3746/jkfn.2007.36.4.383
Physiological activities of Agaricus bisporus extracts were examined. Nitrite-scavenging activity, superoxide dismutase (SOD)-like activity and electron-donating ability (EDA) of Agaricus bisporus extracted with water, 50%, and 100% ethanol were measured. Nitrite- scavenging activities at pH 1.2 were the most effective in water and 50% ethanol extracts from brown and white Agaricus bisporus samples. SOD-like activities of water and 50% ethanol extracts of both samples were
lower than those of 1.0% and 0.1% L-ascorbate solutions. SOD-like activities of brown Agaricus bisporus extracts were higher than those of white Agaricus bisporus extracts, and water extracts of the samples were the highest. EDAs of brown Agaricus bisporus extracts were higher
than those of white Agaricus bisporus extracts, while those of both extracts were lower than 1.0% and 0.1% L-ascorbate solutions. The results will be useful for understanding the physiological activities of Agaricus bisporus extracts.
Physiological Activities of Ethanol Extracts from Different Parts of Ailanthus altissima
Lee, Yang-Suk ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 389~394
DOI : 10.3746/jkfn.2007.36.4.389
The study was carried out to optimize the electron donating ability (EDA), superoxide dismutase (SOD)-like activity, nitrite scavenging ability, and the inhibitory activities of xanthine oxidase and tyrosinase of Ailanthus altissima ethanol extracts from roots, stems and leaves. The EDA of the roots and stem extracts were 64.04% and 63.27% at
, respectively. The SOD-like activity of the leaves extract was the highest (50.00%) at
. The nitrite scavenging ability of the leaves extracts was over 98% at pH 1.2 and 3.0. The xanthine oxidase inhibitory rates of the extracts were
and the tyrosinase inhibitory rate of the roots was the highest (62.01%) at the concentration of
. These results indicated that the roots extract showed the highest EDA and tyrosinase inhibition, while the leaves extract had tile highest SOD-like activity and nitrate scavenging ability.
The Functionality of the Saltwort (Salicornia herbacea L.) Extract Fermented Juice
Song, Tae-Cheol ; Lee, Chang-Ho ; Kim, Young-Eon ; Kim, In-Ho ; Han, Dae-Seok ; Yang, Dong-Heum ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 395~399
DOI : 10.3746/jkfn.2007.36.4.395
The purpose of this study was to investigate the antioxidant and fibrinolytic activities of saltwort fermented juice. Saltwort extract was fermented using lactic acid bacteria at
for 3 days and the fermented juice was analyzed for its functionality as a potential functional food source. The addition of sugar improved the cell viability during fermentation of saltwort. At the concentration of 50%, lyophilized fermented juice showed DPPH-radical scavenging activities of 23.7% and SOD-likely activity of 34.5%. Fibrinolytic activity of fermented juice was also observed at a concentration of 25%. In conclusion, saltwort fermented juice appears to have not only anti-oxidant effect but also cardiovascular protection.
Antitumor Activity of Salvia miltiorrhiza Herbal Extract in Rat Tumor Model
Park, Hyun-Jeong ; Ahn, Sang-Gun ; Kim, Jeong-Sang ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 400~404
DOI : 10.3746/jkfn.2007.36.4.400
The present study was carried out to investigate the antitumor activity of Salvia miltiorrhiza (SM) herbal extract in rat tumor model. We used a new tumor animal model for the invasion and metastasis of cancer using genetically k-ras-induced rat kidney cells (RK3E-ras). We observed tumor as early as 7 days after the injection of RK3E-ras cells in subcutaneous of Sprague-Dawley rats. All of the rats developed tumor mass at the inoculated site. After 7 days, the experimental groups were divided into two: saline control and injected with SM (200 mg/kg) groups. We investigated tumor's weight, size and hepatic metastasis of each group. Injection of SM herbal extract every other day for 14 days significantly inhibited tumor growth. Histologically, the tumors were undifferentiated carcinoma showing multifactorial necrosis and hemorrhage; also, the tumor invaded into hepatoportal region. Treatment with SM herbal extract caused significant inhibition of tumor cell proliferation. Our data showed that SM herbal extract is effective in controlling the tendency of tumor cell proliferation and metastasis by injection of RK3E-ras cells. These findings provided the potential value of SM as a novel antitumor agent candidate.
Lipid-Lowering Action of Powder and Water Extract of Mulberry Leaves in C57BL/6 Mice Fed High-Fat Diet
Cho, Young-Sook ; Shon, Mi-Yae ; Lee, Mi-Kyung ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 405~410
DOI : 10.3746/jkfn.2007.36.4.405
This study was to investigate the hypolipidemic effect of powdered mulberry leaves (PML) and water extract of powdered mulberry leaves (WML) on high-fat fed mice. Male C57BL/6 mice were divided into four groups; a normal group (N), a high-fat (HF) group, a high-fat group supplemented with PML (HF-PML) and a high-fat group supplemented with WML (HF-WML). The PML or WML was added to a standard diet based on 1% dried mulberry loaves (1g PML/100g diet and 0.22g WML/100g diet) for 6 weeks. Body weight and organ weights were not different among thle groups in high-fat fed mice, whereas food intake and daily energy intake were significantly (p<0.05) lowered in the HF-PML group. In plasma and liver, the supplementation of PML and WML significantly (p<0.05) lowered cholesterol and triglyceride concentrations compared to the HF group. The HDL-cholesterol/total cholesterol ratio was significantly (p<0.05) higher in the HF-PML and HF-WML groups than in the B:.w group. The fecal triglyceride and cholesterol concentrations were significantly (p<0.05) increased in the HF-PML and HF-WML groups compared to the HF group. Hepatic lipid regulating enzyme activities, fatty acid synthase, fatty acid
and carnitine palmitoyl transferase were significantly lower in the HF group than in the N group. However, the activities of these hepatic lipid regulating enzymes activities were significantly (p<0.05) elevated in the HF-PML and HF-WML groups compared to the HF group. Accordingly, these results suggest that PML and WML improve plasma and hepatic lipid levels partly by increasing fecal lipid excretion and enhancing hepatic lipid regulating enzymes activities.
Effect of Pine Needle Water Extract on Cadmium-Induced Oxidative Stress in Rats
Jang, Joo-Yeun ; Kim, Myung-Joo ; Lee, Mi-Kyung ; Kim, Duk-Jin ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 411~418
DOI : 10.3746/jkfn.2007.36.4.411
Oxidative stress can play a key role in cadmium (Cd)-induced dysfunction. The present study examined the effect of pine needle water extract (PN) on Cd-induced oxidative stress in rats. Sprague-Dawley male rats were divided into three groups: normal group, Cd control group (Cd) and PN-administered Cd group (Cd-PN).
in 0.9% NaCl was administered orally with a dose of 5mg/kg of body weight/week, while the PN was administered orally with a dose of 1.26g/kg of body weight/day. Body weight gain was not different between groups, whereas food intakes were significantly lower in the Cd-PN group than in normal or Cd group. Relative liver weight was significantly increased by cadmium administration compared to the normal group. Hepatic cytochrome P450 was significantly lower in Cd and Cd-PN groups than in normal group, while xanthine oxidase and alcohol dehydrogenase activities were significantly higher in the Cd-PN group than in normal or Cd group. Increased hepatic superoxide dismutase, monoamine oxidase, catalase, and glutathione peroxidase activities by cadmium administration were significantly decreased by PN supplement. PN did not affect the hepatic glutathione content in cadmium-administered rats; however, PN significantly lowered the hepatic lipid peroxide level and plasma alanine transferase activity compared to the Cd control group. These results suggest that the PN may alleviate Cd-induced oxidative stress without hepatotoxicity.
Effects of Natural Plants Supplementation on Adipocyte Size of the Epididymal Fat Pads in Rats
Kim, Hyun-Sook ; Kim, Tae-Woo ; Kim, Dae-Jung ; Hwang, Ha-Jin ; Lee, Hyun-Joo ; Choe, Myeon ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 419~423
DOI : 10.3746/jkfn.2007.36.4.419
Obesity is increasingly recognized as a serious public health threat. Anti-obesity nutraceuticals that are safe and effective for the control and treatment of obesity are the subject of intense research throughout the world. The purpose of this study was to assess the effects of plants such as Akebia quinata, corn silk, Crataegus pinnatifida var. psilosa, Coix lachrymajobi var. mayuen, and Lentinus edodes on fat cell size and serum lipid profile of rats. Male Sprague-Dawley rats were weighed, randomly assigned and fed AIN-76A basal or high fat diet for 6 weeks. Serum triacylglycerol level of rats fed a normal diet was significantly decreased with natural plants supplementation. Adipocytes from the epididymal fat pads of rats fed a high fat diet were larger than those of rats fed a normal diet. Fat cell size significantly (p<0.05) decreased with natural plants supplementation. Therefore, we found that natural plants supplementation can be used for the treatment of obesity, possibly by decreasing the body fat.
Effect of Mycelia Extracts from Lentinus edodes Mushroom-Cultured Lonicera japonica Thunberg on Anticancer and Antiallergy Activities
Bae, Man-Jong ; Ye, Eun-Ju ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 424~430
DOI : 10.3746/jkfn.2007.36.4.424
This study was conducted to investigate the effect of mycelia of Lentinus edoes mushroom-cultured Lonicera japonica Thunberg (LLJ) on proliferation of the cancer cell lines (Hep3B, MCF-7 and HeLa), sarcoma 180 (S-180) and antiallergy. In an anti-cancer test using Hep3B (hepatic cancer cell), MCF-7 (breast cancer cell) and HeLa (uterine cancer cell), LLJ extract showed higher antiproliferating effect than that of LJ (Lonicera japonica Thunberg) extract. In an anti-cancer testing using Hep3B cells, LLJ extract showed growth-inhibitory effect of
at 3mg/rnL. In an anti-cancer testing using MCF-7 cells, LLJ and LJ extracts showed high antiproliferating effect. LLJ showed the tumor suppressive effect in mice injected with S-180 cells. The growth-inhibitory rates against tumor cells were 61% for LLJ, 37% for LJ. LLJ inhibited histamine release from rat peritoneal mast cells activated by compound 48/80. These results suggest that Lentinus edodes mushroom-cultured herb has an antiproliferating effect against cancer cell lines (Hep3B, MCF-7 and HeLa) and S-180 tumor, and will be beneficial in the treatment of allergic reaction.
Inhibitory Effect of the Methanolic Extract of Symphyocladia latiuscula on the Growth of HT-29 Human Colon Cancer Cells
Kim, Eun-Ji ; Park, So-Young ; Hong, Ji-Eun ; Shin, Min-Jeong ; Lim, Soon-Sung ; Shin, Hyun-Kyung ; YoonPark, Jung-Han ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 431~438
DOI : 10.3746/jkfn.2007.36.4.431
In the present study, twenty eight marine algae species were evaluated for their antiproliferative effect on HT-29 human colon cancer cells. Among these, the methanolic extract of Symphyocladia latiuscula (SL Ex) showed the highest inhibitory activity on HT-29 cell growth. In this study, we examined the mechanism by which SL Ex inhibited the HT-29 cell growth. Cells were cultured with various concentrations of
SL Ex. The SL Ex substantially decreased the viable cell numbers and induced apoptosis of HT-29 cells in a dose-dependent manner Western blot analyses of total cell lysates revealed that SL Ex increased the levels of cleaved caspase-8, -9, -7, and -3, and poly (ADP-ribose) polymerase in HT-29 cells. In addition, SL Ex increased truncated Bid levels but moderately decreased Bax levels at only
. Furthermore, SL Ex did not affect Bcl-2 protein levels but increased the levels of Fas in HT-29 cells. The present results indicate that SL Ex inhibits cell growth via inducing apoptosis in human colon cancer cells. The mechanism of apoptosis induction by SL Ex involves caspase-8 activation leading to changes in mitochondrial events and subsequent activation of the caspase-7/caspase-3 cascade. Our finding may lead to the development of new therapeutic strategies for the treatment of colon cancer.
Effects of Long-Term Administration of Saengshik on Growth Increment, BMD and Blood IGF-1 Concentration in Growing Rats
Kim, Joong-Hark ; Hong, Sung-Gil ; Kim, Wha-Young ; Jung, Ji-Sang ; Hwang, Sung-Ju ; Mok, Chul-Kyoon ; Park, Mi-Hyoun ; Lee, Ju-Yeon ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 439~446
DOI : 10.3746/jkfn.2007.36.4.439
This study was performed to investigate the effect of long-term administration of Saengshik on growth parameters of growing rats. Male Sprague-Dawley rats were fed on AIN-93G basal diets for 12 weeks and assigned to the following groups: rats administrated orally with Saengshik at the dose of 1g/kg/day (1xJS ), 2g/kg/day (2xJS), 4g/kg/day (4xJS) and distilled water (Control). Rats were sacrificed at 4, 8, 12 weeks after oral administration. Bone mineral density (BMD) and bone mineral contents (BMC) were measured by PIXImus densitometry and serum insulin-like growth factor-1 (IGF-1) concentration were determined by using EIA method. Body weight and food intake did not show significant changes within groups for 12 weeks. Physical longitudinal growth indexes, body length and femur length were significantly increased in Saengshik-administered groups at 12 weeks, in which BMD and BMC also significantly increased. Also, in blood IGF-1 level, Saengshik-administered groups were remarkedly higher than control group at 4 week (p<0.001), in which significantly higher at 8 week and 12 week. These results suggest a close relation between administration of Saengshik and increment of longitudingal bone growth. Therefore, as the result of this study, it could be expected that the administration of Saengshik for 12 weeks is helpful to the increase of longitudinal growth and growth factors in rats. Furthermore, we propose that the consumption of Saengshik as dietary supplementation may promote to increase in longitudinal bone growth in growing children.
Evaluation of Dietary Manganese Intake in Korean Men and Women over 20 Years Old
Choi, Mi-Kyeong ; Kim, Eun-Young ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 447~452
DOI : 10.3746/jkfn.2007.36.4.447
This study was peformed to estimate manganese intake and the major food source of manganese in Korean adults. The 354 subjects aged over 20 years were measured anthropometrics and dietary intake using 24-hour recall method. Daily intake and the major food sources of manganese were calculated using manganese database of food composition tables in Korea, USA and Japan. The average age, height, weight and BMI were 54.6years, 165.7cm, 67.2kg and
for men and 53.8 years, 153.7cm, 59.1kg and
for women, respectively. The daily energy and manganese intake of men were significantly higher than those of women (1740.9 kcal vs. 1432.6 kcal; p<0.001, 3.7mg vs. 3.2mg; p<0.01). However, daily manganese intake per 1000kcal between men and women was not significantly different (2.2mg/1000kcal vs. 2.3mg/1000kcal). Daily manganese intakes from each food group were 1.9mg from cereals, 0.5mg from vegetables, 0.4mg from pulses and 0.2mg from seasonings. The 20 major food sources of dietary manganese were rice, soybean, sorghum, Kimchi, tobu, wheat flour, red pepper powder, small red bean, glutinous millet, soybean paste, potato, Ramyeon, green pepper, noodle, buckwheat Naengmyeon, soybean sprout, laver, watermelon, perilla seeds powder and soy sauce. Manganese intake from these 20 foods was 74.0% of the total dietary manganese intake. In conclusion, daily manganese intake of the subject was 3.4mg (2.2mg/1000 kcal) and met adequate intake of manganese. The mai or food sources of manganese were cereals, pulses, and vegetables such as rice, soybean, sorghum, Kimchi and tobu.
Effects of Gamma Irradiation on Physicochemical Properties of Red Beet and Stability of Betalain in the Red Beet (Beta vulgaris L.)
Kim, Kyoung-Hee ; Lee, Sung-A ; Yook, Hong-Sun ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 453~457
DOI : 10.3746/jkfn.2007.36.4.453
The physicochemical properties of red beets and the stability of betalain pigments irradiated at 2.5, 5, 10 and 30 kGy were evaluated. Betalain extraction yield of irradiated red beets was not significantly different from non-irradiated red beet. The red beet irradiated at 5kGy showed high optical density value in betacyanin and betaxanthin. In Hunter's color value lightness (L), redness (a) and yellowness (b) decreased with increment of irradiation dose. All red beets showed no difference in pH. The red beets irradiated above 10 kGy had poor textural property quality but antioxidant activity of betalain was not significantly changed by gamma irradiation. Considering natural colorant and textural quality, the gamma irradiation above 10kGy was an undesirable technique for red beets.
Effect of Scutellaria baicalensis Georgi on Shelf Life of Tofu
Woo, In-Taeck ; Park, La-Young ; Park, Geum-Soon ; Lee, Shin-Ho ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 458~463
DOI : 10.3746/jkfn.2007.36.4.458
This study was carried out to investigate potential use of Scutellaria bicalensis Georgi (SBG) as an ingredient for extending the shelf life of tofu. The spore of Bacillus sp. KN-4 was isolated from commercial tofu and inoculated to soybean milk to prepare artificially contaminated tofu. The contaminated tofu was stored in the presence of 0.05 and 1% of SBG extract at
for 72 hrs. The pH changes of contaminated tofu with SBG extract was slower than those of control during storage. The degree of pH change decreased as the concentration of SBG extract was increased from 0.05% to 0.1%. The change of titratable acidity of the tofu showed the same tendency as pH change during storage. Total cell number of the SBG extract added tofu was lower about
log cycle (0.05% SBG extract) or
log cycle (0.1% SBG extract) than that of control after storage for 12 hrs at
. The color changes of the tofu did not show any difference with and without SBG during storage at
. The strength and hardness of the tofu was improved by the addition of SBG extract. Especially, the strength and hardness of tofu in the Presence of 0.1% SBG extract did not change during storage time. The sensory Qualify of SBG extract added tofu was better than control in texture, but not in taste and color. The overall acceptability of the SBG extract added tofu was similar to control.
Fermentation and Functional Properties of Korean Traditional Liquor, Hahyangju
Park, Chi-Duck ; Jung, Hee-Kyoung ; Kim, Dae-Ik ; Lee, In-Seon ; Hong, Joo-Heon ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 464~469
DOI : 10.3746/jkfn.2007.36.4.464
This research was worked out to investigate fermentation and functional properties of Hahyangju. Hahyangju was brewed by traditional method and the changes in chemical component and microorganisms in wine mash were evaluated during brewing. In the course of the first mash brewing, the yeast cell number was the highest after 6 days fermentation, and contained 11% alcohol, 0.82% total acidity and 0.53% amino acidity The final product of Hahyangju contained 19.2% alcohol, 0.32% reducing sugar, 0.46% total acidity and 0.24% amino acidity. The major organic acid was lactic acid containing 680.04mg/100mL. The total phenolic compound contents and electron donating ability of Hahyangju were 263.16 ppm and 93.08%, respectively. Nitrate scavenging effect was measured at various PH (1.2, 3.0, 4.2, 6.0); the highest effect was at pH 1.2 as 90.26%. Angiotensin converting enzyme (ACE) inhibition activity and fibrinolytic activity of Hahyangju ware 87.5% and 19.1 unit, respectively.
Antimicrobial Activities of Scutellaria baicalensis Georgi Against Various Pathogens and Spoilage Bacteria Isolated from Tofu
Woo, In-Taeck ; Park, Kyung-Nam ; Lee, Shin-Ho ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 470~475
DOI : 10.3746/jkfn.2007.36.4.470
Antibacterial activities of Scutellaria baicalensis Georgi (SBG) extract were examined against spoilage bacteria isolated from commercial tofu and various pathogens such as Listeria monocytogenes ATCC 19115, Pseudomonas fluorescens ATCC 21541. Staphylococcus aureus ATCC 29737, Salmonella Typhimurium ATCC 11806, Vibrio parahaemolyticus ATCC 17802, and Aeromonas hydrophila KCTC 2358. Four kinds of spore forming organisms were isolated from commercial tofu and identified as Bacillus sp. KN-4, Bacillus sp. KN-6, Bacillus sp. KN-10 and Bacillus sp. KN-20 using API CHB kit. The SBG extract showed high antibacterial activities and significantly inhibited the growth of the isolated spoilage bacteria and pathogens. The inhibitory effects against the organisms increased as the concentration of the SBG extract increased. The antimicrobial activities of the SBG extract were maintained markedly after heat treatments
. The minimum inhibitory concentrations (MIC) of the SBG extract against the organisms ranged from 1,000 ppm to 5,000 ppm.
Antimicrobial Activities of Medicinal Herbs and Seaweeds Extracts Against Microorganisms Isolated from the Rice Warehouses
Lee, So-Young ; Kim, Jin-Hee ; Kim, Koth-Bong-Woo-Ri ; Song, Eu-Jin ; Kim, Ah-Ram ; Park, Sun-Mee ; Han, Chung-Soo ; Ahn, Dong-Hyun ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 476~480
DOI : 10.3746/jkfn.2007.36.4.476
In order to prevent the quality deterioration of rice from microbial infection, we investigated antimicrobial activities of Morun albalinne, Glycyorrhiza uralensis, Sargassum siliquastrum, and Ecklonin cava against isolated microorganisms from the paddy and warehouses. The major types of the bacteria grown in the paddy and rice warehouses were Sphingomonas paucimobilis, Arthrobacter atrocyaneus, and Bacillus spp. such as Bacillus cereus Additionally Deuteromycetes, Aspergillus spp. and Penicillum spp. were considered as major contaminant microorganisms in the paddy and rice warehouses. As results of the paper disc assay against the isolated microorganisms, the ethanol extracts with Morun albalinne, Glycyorrhiza uralensis, Sargassum siliquastrum, and Ecklonia cava showed effective antimicrobial activities. Especially, Morun albalinne showed the strongest growth inhibition on the isolated bacteria at
Relationship between Breakfast Frequency and School Food Waste among High School Students in Daegu
Cha, Myeong-Hwa ; Kim, Yoo-Kyeong ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 481~487
DOI : 10.3746/jkfn.2007.36.4.481
The purposes of this study were to examine the influence of breakfast consumption frequency on school food waste and to compare its effect with food service satisfaction and food service management type. The subjects who participated in this study were composed of 978 first grade high school students from 30 high schools in Daegu. The hierarchical multiple regression analysis was carried out for the data analysis using SPSS 12.0 program. School food waste was estimated by visual evaluation method. The questionnaires containing breakfast eating frequency, food service satisfaction, and food service management type were surveyed. According to the results, school food waste was significantly affected by breakfast eating frequency. In contrast, food service satisfaction had a negative effect on school food waste, which was more significantly apparent in less frequent breakfast. Although the amount of lunch waste was influenced by food service satisfaction related with menu, it was not significantly affected by food service management type and food service satisfaction related with hygiene and service. In conclusion, the results indicate that eating breakfast is estimated as a characteristic strategy for improving efficiency of school food service by curtailing food waste. This study suggested that the importance of eating breakfast could be incorporated into the subjects of continuous nutritional education and the strategic planning for promoting efficiency of school food service.
A Verification on the Effectiveness of Middle Managers' Emotional Leadership in Food Service Management Companies
Kim, Hyun-Ah ; Jung, Hyun-Young ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 488~498
DOI : 10.3746/jkfn.2007.36.4.488
The purposes of this study were to: a) provide evidences concerning the effects of emotional leadership b) examine the impacts of emotional leadership on employee-related variables, 'job satisfaction', 'organizational commitment', 'organizational performance' and 'turnover intention', and c) identify a conceptual framework underlying emotional leadership. A survey was conducted from August 23 to November 3, 2005 to collect data from mid-level managers in food service company headquarters (N=219). Statistical analyses were completed using SPSS Win (12.0) for descriptive, reliability, factor and correlation analyses and AMOS (5.0) for confirmatory factor analysis and structural equation modeling. The main results of this study were as follows. First, the managers gave the highest point to their leaders in the emotional leadership competence 'organizational awareness : reading the currents, decision networks, and politics at the organizational level' and gave the lowest point in the emotional leadership competence 'influence: wielding effective tactics for persuasion'. Second, the means of job satisfaction was above the midpoint (3 points). Employees' job satisfaction with 'coworkers' was relatively high. However, the extents of satisfaction with 'payroll' 'promotion', and 'work environment' were relatively low. Third, the organizational commitment was above the midpoint (3 points). In the organizational commitment, 'loyalty' factor was higher than 'commitment' factor. Fourth, the means of organizational performance was above the midpoint. The highest organizational performance variable was 'internal efficiency; trying to reduce cost' and the lowest organizational performance variable was 'internal fairness ; equitable treatment and all are treated with respect with no regard to status and grade'. Fifth, most respondents intended on 'thinking of quitting ; towards turnover process'. Sixth, the test of hypothesis using structural equation modeling found that emotional leadership produced p[Isitive effects on job attitude and job performance. Emotional leadership enhanced job satisfaction and organizational commitment, and in turn, employees' attitude positive effects on organizational performance; emotional leadership also had a direct impact on organizational performance
Determination of Selected Antioxidant Compounds in Specialty Rice
Seo, Sun-Jung ; Choi, Young-Min ; Lee, Sun-Mi ; Kim, Kee-Jong ; Son, Jong-Rok ; Lee, Jun-Soo ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 499~502
DOI : 10.3746/jkfn.2007.36.4.499
The objective of this study was to determine antioxidant compounds in specialty rice including milled rice, brown rice, red rice, giant embryonic rice, black rice, green rice, and Goami consumed in Korea. The concentrations of total polyphenols (insoluble and soluble polyphenols), phytic acid, and anthocyanin in the samples were measured using spectrophotometric methods and vitamin I analysis was carried out by HPLC. The contents of the total polyphenolic compounds were 565mg/100g for black rice, 405mg/100g for red rice, 140mg/100g for giant embryo rice, 138mg/100g for Goami, 133mg/100g for brown rice, 127mg/100g for green rice, and 66mg/100g for white rice. The black and red rices were significantly high in polyphenolic contents compared with the other rices, apparently due to their intense red-purple color. Black rice, red rice, and Goami showed significantly higher vitamin E and phytic acid contents compared with other rices. Anthocyanins were determined in only black rice (302mg/100g) due to the detection limits of spectrophotometric assay. hlthough vitamin I and anthocyanin contents were relatively lower than polyphenolics among the samples, the specialty rice may contribute to the significant supply of antioxidant compounds to prevent oxidative stress due to the fact that rice is used as a staple food and consumed in large amounts in our diets. The results can be used to increase rice consumption by enhancing consumer awareness on health benefits of the rice.
Weight Control Mechanisms and Antiobesity Functional Agents
Ahn, In-Sook ; Park, Kun-Young ; Do, Myoung-Sool ;
Journal of the Korean Society of Food Science and Nutrition, volume 36, issue 4, 2007, Pages 503~513
DOI : 10.3746/jkfn.2007.36.4.503
The obese population has been increasing worldwide and obesity has become one of the socioeconomic problems. Obesity raises more concerns as more studies regarding its direct and indirect relativity to several diseases such as type II diabetes, hypertension, etc. are published. Since leptin, an important signal in the chronic control of food intake and energy expenditure, was discovered in 1994, there has been a great accumulation of knowledge on fighting obesity by facilitating pharmacological and nutritional strategies on the molecular level of the body weight control system. In particular, evidences are accumulating that particular food components affect our physiological function and gene expressions which are associated with body weight control. In this study, we review the four mechanisms for weight control and antiobesity functional agents such as HCA, L-carnitine, CLA, chitosan, calcium supplements capsaicin contained in red pepper, and oriental herbal mixture. We also describe about the efficacy and working mechanism of these functional agents on the basis of antiobesity mechanisms.