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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Food And Nutrition
Journal Basic Information
Journal DOI :
The Korean Society of Food and Nutrition
Editor in Chief :
Volume & Issues
Volume 12, Issue 6 - Dec 1999
Volume 12, Issue 5 - Oct 1999
Volume 12, Issue 4 - Aug 1999
Volume 12, Issue 3 - Jun 1999
Volume 12, Issue 2 - Apr 1999
Volume 12, Issue 1 - Feb 1999
Selecting the target year
Characteristics of a Modified Nuruk Made by Inoculation of Traditional Nuruk Microorganisms
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 219~225
In order to improve the quality of nuruk a Korean traditional fermenting agent for brewing nuruk was modified by a new method inoculating Rhizopus japonicus T2 Aspergillus oryzae L2 and hansenula sp. BC26 which had been isolated from traditional Nuruk. And the characteristics of modified Nuruk were investimgated as compared with current fermenting agents such as commercial Nuruk and rice koji of As-pergillus kawachii. The odor of modified Nuruk was savory but those of commercial Nuruk and rice koji were fetid andinodorous repectively. The extracted waters of modified Nuruk commercial Nuruk and rice koji were yellow pale yellow and colorless and showed 6.15, 6.01 and 3.30 of pH respectively. Mod-ified Nuruk had 7.6
106CFU/g of yeast but commercial uruk and rice koji had no yeast. Commercial Nuruk had 1.0
102CFU/g of lactic acid bacteria but modified Nuruk and rice koji had no lactic acid bacteria. The amylolytic and proteolytic activities of modified Nuruk were much higher than those of commercial Nuruk or rice koji. Seed mash of modified Nuruk had ester aroma but that of commercial Nuruk rather offensive odor and that of rice koji neither ester aroma or offensive odor. It seemed that if the modified Nuruk is used in seed mashing the supplement of acidulant is need to lower pH. The quality of modified Nuruk was thought to be much better than that of commercial Nuruk or rice koji.
Changes in microorganisms and Min Components during Takju Brewing by a Modified nuruk
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 226~232
To evaluate the characteristics of modified nuruk made by inoculation and cultivation of Rhizopus jap-onicus T2, Aspergillus oryzae L2 and hansenula sp. BC26 three different Takju mashes were made with modified Nuruk commercial Nuruk and rice koji and the changes in microorganisms and major compon-ents of mashes were investigated uring brewing. The numbers of yeast kept higher in the mash of mod-ified Nuruk or rice koji. The numbers of lactic acid bacteria were high in mash of commercial Nuruk but those were not in mash of modified Nuruk or rice koji. all mashes showed stable pH in a day and the pH kept higher in mash of modified Nuruk than in that of commer-cial Nuruk or rice koji. Increase in the content of total acid was moderate in mash of modified Nuruk or rice koji but it was too much in that of commercial Nuruk. increase in the content of amino acid was much highr in mash of modified Nuruk or commercial Nuruk than in that of rice koji. Increase in the content of alcohol was more rapid in mash of modified nuruk or rice koji than in that of commercial Nur-uk. The content of reducing sugar kept highter in mash of commercial Nuruk or modified Nuruk than in that of rice koji. A small amount of modified Nuruk accomplished favorable fermentation showing nor-mal patterns in microbiological and physicochemical changes during brewing.
Optimal Condition for Transformation of Alkali-tolerant Bacillus sp.
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 233~239
To develop the potential use as new host strain for gene cloning the optimal conditions for transform-ation of alkali-tolerant Bacillus sp. were examined. The Bacillus sp. YA-14 was cultured to late logarith-mic growth phase at 37
in modified SPI medium (pH8.0) containing 0.4% MgSO4 0.5mM CaCl2 1 ml of competent cell was mixed with 0.5
g of plasmid DNA and incubated with shaking at 37
for 40min. The transformation frequency under the optimal condition was 4.53
10-6 CFU/ml/g plasmid DNA. The electrophresis and stably maintained in the new host.
Study on the Bioflocculant by Bacillus megaterium. #2 Characteristic of Production Condition for Bioflocculant by Bacillus megaterium
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 240~245
The purpose of this study was to develop the new microbial bioflocculant available in a food and fer-mentation industal. This study was reported the results of the composition for optimum culture medium and elemental characteristic of crude purification bioflocculant following the previous report(I). The maximum production of the flocculant from Bacillus megaterium was observated in the culture medium containing 2% sucrose 0.3% NaNO3 0.01% tryptone 0.01% beef extract 0.05% MgSO4 ·7 H2O 0.005% CaCO3 Addition of the sucrose as carbon sources and inorganic salt such as MgSO4, CaCO3 significantly increased the production of flocculant more than nitrogen sources. In the result of color reaction of the crude purified bioflocculant it was investgated that anthrone was positive and benedict burette and nin-hydrin was negative. These result were indicated that the flocculant produced from Bacillus megaterium was a kind of exopolysaccharide.
Characteristic of Food Waste in Different Types of Restaurants
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 246~251
The purposed of this study was to investigate the efficient recycling of food waste according to the restaurants type. To the investigated of characteristic of food wastes in different types of restaurants we were collected the sample of 60 as Korean 35 Chinese 10 Japanese 5 Western 5 Flour 5 in Swoon. The average water content of food waste was 79.9% and Korean restaurant was 80.3% which was hig-her than that of any other serving type. On the examination of a organic matter content of food waste according to the season crude fiber was higher in may and July crude protein content was higher in January and march than that other seasons. The average pH of food waste was 4,74 C/N ratio was 15.8 and the average cation content was K 0.57% Ca 0.39% Mg 0.22% NaCl 3.36% respectively The aver-age concentration of Fe, Zn, Pb, Cu, Cr, Cd Ni were 154.37 mg/kg 24.79 mg/kg 0.27 mg/kg 5.63 mg/kg 5.49 mg/kg, 0.31mg/kg 1.07mg/kg respectively.
Effects of Calcium on Textural and Sensory Properties of Ramyon
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 252~257
In an attempt to evaluate the effects of calcium on paste or gelatinization properties by amylograph and mixing properties by farinograph of wheat flour and on viscosity property cooking quality textural and sensory properties of Ramyon were examined. The contents of calcium used were from 1.0% to 3.0% based on flour weight. The viscosity property of wheat flour with calcium was increased the initial past-ing temperature but the amylograph peak viscosity were decreased in vice versa. The farinograph absorp-tion stability and breakdown were increased by calcium. The shear extrusion force and hardness of Ram-yon manufactured with calcium were shown much higher value than those of control. At cooking quality examination of Ramyon manufactured with calcium weight of cooked Ramyon was increased by volume was decreased. Extraction amounts of Ramyon manufactured with calcium during cooking were much smaller than those of control. These changes will provided many advantages in the preparation of Ram-yon. The I2 reaction value of Ramyon manufactured with calcium and control were shown to almost same values. Sensory properties of cooked Ramyon which was manufactured with calcium showed quite acceptable. Based on the cooking and sensory evaluation test addition of 0.3% calcim to wheat flour may be suitable for processing Ramyon.
Manufactureing Conditions and Quality of Dried Meat on the Snow Crab II. Change of Weight Loss Yield on the Steaming and Various Drying Method
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 258~264
This study was carried out to investigate the status in weight loss yield of edible meat quality and free amino acid contents of the snow crab(Chionoectes japonicus) by steaming and various drying treat-ment. Change of body weight loss in steaming treatment sample were 20.48∼26.72% and yield of edible meat of steaming sample was higher than raw sample(p<0.05) The pH value was increased with steam-ing and drying and pH of trunk meat was more increased than leg meat. Volatile basic nitrogen(VBN) content of vacuum dried sample was highest and VBN of hot-air and freezing dried sample were about 10mg%. Content of vaccum dried sample wre 41.33 and 48,56mg%. Thirty kind of free amino acids dectected in the snow crab and changes of free amino acid in leg meat were markedly reduced by vacuum drying and the reducing ratio of leg meat by freeze drying was little. The major free amino acid of leg and trunk meat were 39.94% 46.78% respectively. The formation of flavor free amino acid in freezing dried sample were high but its hot-air aried sample were small.
Stabilization of Aspergillus sp.
-Amylase by Modification with
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 265~270
The stabilization of Aspergillus sp.
-amylase was attained by modification with periodate-oxidized sol-uble starch. The pH stability of modified enzyme was increased at pH 3~4 and 9~11 in the presence of
-CD) compared with that of native enzyme. Thermal stability of the modified enzyme was increased. After treatment at 6
for 30min the activity remained 20% for the enzyme modified at pH 9.7 in the presence of
-CD and tested in the presence of
-CD 10% for the enzyme modified at pH 9.7 in the presence of
-CD 0% for the native enzyme. The native enzyme and modified enzyme showed one peak in HPLC. The substrate specificity of the modified enzyme was not changed in HPLC analysis of reaction product.
An Antibiotic from Actinomycetes Becoming Effective for Cephalosporin Resistant Pathogenic Pesudomonas sp.
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 271~278
We isolated activnmycetes LAM-98-80 as strain producing an effective antibiotic for cephalosporin re-sistant pathogenic PSeudomonas sp. and identified as Streptomyces sp. LAM-98-80 from cultural and phyisological characteristics. We investigated the optimal culture conditions for producation of an anti-biotic becoming effective for cephalsporin-resistant pathogenic Pseudomonas sp. It was found that 1.5% soluble starch and 1.0% yeast extract were good as carbon and nitrogen source respectively. The pro-duction of antibiotic was also activated by 0.04% Mn2+ as 80% degree. The optimum initial pH on pro-ductio of antibiotic was pH 7.0. The culture condition for the maximal productivity of the antibiotic was at 3
for 5 days. The cephalosporin-resistant pathogenic Pseudomonas sp. as test bacteria was rev-ealed to resist antibiotic of cepha families but revealed to not resist those of
-lactam families ampicil-lin and amoxicillin. Parital purified antibiotic was stable for the pH from 3 to 9 and was also stable when treated at 70
for 1 hour, This antbiotic was effective against all gram positive and negative bac-teria but was not effective against molds and yeasts.
A Study of Hyperlipidemia in Koreans -I. Specially Related to physical Characteristics and It's Risk Factors for Hypercholesterolemia-
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 279~289
This study was conducted to investigate the physical characteristics and risk factors for hyperchol-esterolemia (HC) in Korean. 344 adult men who took the annual health check-ups at D or J hospitals were participated in this cross-sectional study. The subjects were grouped by plasma total cholesterol level in to three groups: normal cholesterolemic (n=139) borderline hypercholesterolemic(n=93) and hypercholesterolemic (n=112) groups. The data of height weight and plasma cholesterol level were col-lected from medical records. Body circumferences(midarm, waist, hip, and thight) skinfold thicknesses (biceps, triceps, subcostal, abdomen, and suprailic), and body composition (fat mass and fat free mass) were measured. Body mass index (BMI) height/weight ratio (HWR) waist/hip circumference ratio (WHR) waist/ thigh circumference ratio (WTR) central skinfold thickenss (CSF) and peripheral skin-fold thickness were calculated. The subjects with HC had significantly higher weight BMI waist cir-cumference skinfold thickness and body fat mass than those of the normal subjects. The relative and attributable risks on HC were 1.61 and 0.17 for obesity (BMI
25) 1,30 and 0.11 for upper body obesity (WTR
1.30) and 1.54 and 0.18 for central body obesity (CSF
95.7). Plasma total cholesterol level was positively correlated with several antropometric parameters: BMI (p<0.001) weight(p<0.001) waist circumference(p<0.001) and skinfold thickness of abdomen (p<0.001) spraillic (p<0.01) triceps(p<0.01) subcostal (p<0.01) and biceps (p<0.05) In conclusion the major influencing factors to plasma cholesterol level was BMI. Among the each physical parameters the circumference of waist the skinfol-d thickness of abdomen and the percentage of body fat were closely related to plasma cholesterol level. The important risk factor for hypercholesterolemia was obesity specially upper body obesity and central body obesity.
A Study of Hyperlipidemia in Koreans -II. Specially Related to Drinking Smoking Exercise and Environmental Characteristics and It's Risk Factors for Hypercholesterolemia-
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 290~299
This study was conducted to investigate drinking smoking exercise and environmental characteristics and it's risk factors for hypercholesterolemia (HC) in Korean. 344 adult men who took the annual health check-ups at D or J hospitals were participated in this corss-sectional study. The subjects were grouped by plasma total cholesterol level into three groups: normal cholesterolemic(n=139) borderline hyper-cholesterolemic (n=93) and hypercholesterolemic (n-112) groups. The data of plasma cholesterol level in the subjects were collected from medical records. Drinking smoking and exercise habits family and disease history personality type and stress level of subjects were investigated by using questionaries. The subjects with HC had longer drinking duration and drunk more frequently. The proportion of smok-er heavy smoker(
2pack/day) and longer smoker (
30yrs) showed high in the HC but there were no significancy. The subjects with HC had preference for light exercise and exercised more frequently but there were no significant difference. The family history of cardiovascular diseases was higher in the were not different among the three groups. The relative risks on HC were 1.33 for family history, 1.22 for severe stress 1.06 for smoking and 1.04 for exercise.
A Study on the Dietrary Attitude of the House Wives in Pusan by Nutrition Knowledge, Purpose Value of Meals and Monthly Food Expenditure
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 300~305
The purpose of this survey was to study nutrition knowledge dietary attitude purpose value of meal and monthly food expenditure in the house wives. The survey was conducted from September 1 to October 20 in 1998. The results were summarized as follows. Nutrition knowledge of the 30s and 40s group were higher than that of the other group. Dietary attitude of the 20s group was lower than that of the other wives. House wives tended to choose food for the pleasure of its taste and intake of nutrients. There was a significant positive correlation between nutrition knowledge and dietary attitude. The diet-ary attitude and nutrition knowledge were significant positive correlations with food diversity. There was negative correlation between age and nutrition knowledge.
A Study on Dietry Attitudes Food Behaviors and nutriton Know-ledge of Food and ANutrition Major and Non-Major Female Students
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 306~311
The purpose of this study was to investigate dietary attitudes food behaviors and nutrition knowledge of food nutrition major and non-major female students. The subjects of this study consisted of 98 food and nutrition majors and 98 non-majors. Questionnaires were completed by them. Food and nutrition majors gave a serious consideration of taste and nutrition in selecting foods while non-majors considered taste food price amount of food and preparing time. Food and nutrition majors got higher scores in hig-her level of nutrition knowledge than non-majors and both got about the same scores in basic nutrition knowledge. The mean body weights of both were about the same and mean height of non-majors was hig-her than food and nutrition majors. Accrding to obesity index ideal body weight was more in food and nutrition ajors and underweight was more in non-majors. Dietary attitudes food behaviors and nu-trition knowledge of food and nutrition majors were better than those of non-majors. Therefore nutrition non-majors need nutrition education in order to improve their food behaviors and nutrition knowledge.
A Study on Obesity and Nutrition Knowledge in Male Employees who have High Educational Background
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 312~319
This study was carried out to examine obesity and nutrition knowledge in male employees who had high educational background. The subjects in this study were 213 persons aged 20 to 40(52.6% among them were 20s) Ninety six percent of them graduated university. Most of them took exercise regularly and showed less smoking tends but drank frequently. Twenty two point one percent of the subjects had diseases specially gastrointestinal disease. anthropometric results were height:172.1cm; weight :70.5kg;BMI:23.8;fat mass:16.1kg; fat percentage :21.3% ;LBM :55.4kg ; and TBW : 40.9kg BMI and fat percent were used for screening obesity. According to BMI the normal group (20∼25) was 64.6% the oberweight group (25∼27) was 18.4% the underweight group (<20) was 9.9% and the obese group (>27) was 7.1% Based on fat percentage, the normal group (14%∼23%) was 58.5% the obese group(>23%) was 36.0% and the underweight group(<14%) was 6.5%. There was significant relationship be-tween age or marriage and BMI or fat percentage. But the rest of socio-dmographic and health-related factors didn't affect signifincantly. There was no difference in nutrition knowledge of subjects by obesity rate however obese group was more sensitive to the foods related to weight gain.
Antioxidative Effects of Flavonoids toward Modification of Human Low Density Lipoprotein
The Korean Journal of Food And Nutrition, volume 12, issue 3, 1999, Pages 320~327
The flavonoids are one of the most numberous and widespread groups of natural consituents. The low molecular weight of benzo-
-pyrone derivative are ubiquitous in plants and are vegetables nuts, seeds, leaves, flowers, and bark. The flavonoids constitute of a large class of compounds ubiquitous in plants containing a number of phenolic hydroxyl groups attached to ring structures conferring the antioxidant activity. Epidemiologic studies suggest that the dietary intake of antioxidants constitutes a risk factor for vasclar disease indicating that oxidation may be important in the pathogenesis of human athero-sclerosis. Elevated plasma low density lipoprotein (LDL) cholesterol concentration are associated with accelerated atherosclerosis, LDL is oxidized by smooth muscle cells resulting in several chemicals and physical changes of LDL. Oxidized LDL is responsible for cholesterol loading of macrophages foam cells formation and atherogenesis. There have been insulficient tests of the protective effects of flavonoids against LDL oxidation to make definitive statements about their structure activity relationships. How-ever hydroxylation of the flavone uncleas can appears to be advantageous because polyhydroxylated aglycone flavonoids are potent inhibitor of LDL modification. This identification may lead to new and more effective antioxidant strategies for abrogating the atherosclerotic process the leading cause of death and disability in industrialized societies.