• 한국균학회소식:학술대회논문집
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• 한국균학회 2014년도 춘계학술대회 및 임시총회
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• pp.25-25
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• 2014

Koji molds are comprised of yellow, black and white. Black and white koji molds were recently re-visited by this author and it is concluded that they consists of Aspergillus luchuesnsis, A. niger and A. tubingensis, and the most important species for alcoholic beverage production is A. luchuensis. In the case of yellow koji mold, it is comprised of Aspergillus oryzae, A. sojae and A. tamari. In the case of A. sojae, the species is scarcely isolated from nature and rarely used for industry in Korea. Aspergillus tamari is often isolated from traditional Korean Meju, a fermented soybean product, and the classification of the species is clear. However, in the case of A. oryzae, differentiation between A. oryzae and A. flavus is still in controversy. In this study, we collected 415 strains of Aspergillus flavus/oryzae complex from air, rice straw, soybean, corn, peanut, arable soil and Meju in Korea and we examined the aflatoxin producing capacity of the strains. The norB-cypA, omtA and aflR genes in the aflatoxin biosynthesis gene cluster were analyzed. We found that 367 strains (88.4%) belonged to non-aflatoxigenic group (Type I of norB-cypA, IB-L-B-, IC-AO, or IA-L-B- of omtA, and AO type of aflR), and only 48 strains (11.6%) belonged to aflatoxin-producible group (Type II of norB-cypA, IC-L-B+/B- or IC-L-B+ of omtA, and AF type of aflR). In the case of A. flavus/oryzae strains from Meju, almost strains (178/192, 92.7%) belonged to non-aflatoxigenic group and only 14 strains (7.3 %) belonged to aflatoxin-producible group. It is proposed in this study that non-aflatoxigenic strain from Meju is classified as A. oryzae, considering that Meju is food material.

• Nutrition Research and Practice
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• 제10권5호
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• pp.537-545
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• 2016

BACKGROUND/OBJECTIVES: Dietary sugar intake, particularly added sugar and sugar-sweetened beverages, has received worldwide attention recently. Investigation of dietary behaviors may facilitate understanding of dietary sugar intakes of children and adolescents. However, the relationship between dietary sugar intake and dietary behaviors in the Korean population has not been investigated. Thus, this study aimed to estimate dietary sugar intake and food sources according to sex as well as examine the relationship of dietary sugar intake with frequent snacking and dietary patterns among Korean children and adolescents. SUBJECTS/METHODS: We pooled data from five studies involving Korean children and adolescents conducted from 2002 to 2011. A total of 2,599 subjects aged 9-14 years were included in this study. Each subject completed more than 3 days of dietary records. RESULTS: Mean daily total sugar intake was 46.6 g for boys and 54.3 g for girls. Compared with boys, girls showed higher sugar intakes from fruits (7.5 g for boys and 8.8 g for girls; P = 0.0081) and processed foods (27.9 g for boys and 34.9 g for girls; P < 0.0001). On average, 95.4% of boys and 98.8% of girls consumed snacks during the study period, and total sugar intake showed a significantly increasing trend with increasing energy intake from snacks (P < 0.0001 for both sexes). Two dietary patterns were identified by cluster analysis: Traditional and Westernized patterns. Total sugar intake was higher in the Westernized pattern (56.2 g for boys and 57.2 g for girls) than in the Traditional pattern (46.5 g for boys and 46.3 g for girls). CONCLUSIONS: These results suggest that multilateral and practical development of a nutrition education and intervention program that considers dietary behaviors as well as absolute sugar intake is required to prevent excessive sugar intake in Korean children and adolescents.

• Nutrition Research and Practice
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• 제9권2호
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• pp.199-206
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• 2015

BACKGROUND/OBJECTIVE: Even though the prevalence of metabolic syndrome in adolescents is increasing, little is presently known about this syndrome in adolescents. This study aimed to cluster metabolic risk factors as well as examine the associations between identified patterns and nutrient intake using data from the Korean National Health Examination and Nutritional Assessment (KNHANES). SUBJECTS/METHODS: A total of 2,958 subjects aged 10 to 18 years along with both biochemical and dietary data information were obtained from KNHANES 2007-2010. Six components of metabolic syndrome were used to identify any patterns via factor analysis. Individuals were categorized into quartile groups according to their pattern score. RESULTS: Three clustering patterns with high loadings were identified and named as follows: 1) high blood pressure, 2) dyslipidemia, and 3) glucose abnormality patterns. The high blood pressure pattern showed high loadings of systolic and diastolic blood pressures, the dyslipidemia pattern showed high loadings of triglyceride and HDL-cholesterol levels, and the glucose abnormality pattern showed high loadings of fasting blood glucose levels. Intakes of fat and riboflavin were significantly decreased, whereas those of sodium and niacin were significantly increased across the quartiles in the dyslipidemia pattern. No nutrient intake except that of thiamin was significantly associated with the high blood pressure or glucose abnormality pattern. CONCLUSION: Our findings show that metabolic syndrome risk factors in the Korean adolescent population are characterized by three distinct patterns, which are differentially associated with dietary factors. Characterizing metabolic risk factors and providing specific dietary guidelines for target groups are important.

• Journal of Nutrition and Health
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• 제30권6호
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• pp.690-703
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• 1997

The purpose of this study were to analyze work function and labor productivity in school foodservice systems through work sampling methodology. Conventional foodservice were classified into 5 group depending on the number of meals served. Commissary school foodservices were also classified into 5 group by cluster analysis using the number of meals served, the number of satellite schools, and the duration of time for delivery of food. Work measurement through work sampling methodology was conducted in at 5 conventional and 21 commissary food -services during 3 consecutive days from September to October in 1995. Results from work measurement through work sampling methodology were as followed : The most prevalent work functions was cleaning (26.5%) and then processing (25.1%) in conventional while it was processing (30.9%) and then cleaning(25.2%) in commissary school foodservice. Delay was 22.9% and 19.7% respectively. Mean labor minutes per meal of conventional and commissary foodservics were 4.57 and 4.09 minutes, respectively : no significant difference in labor minutes per meal existed between the two systems. but mean labor minutes per meal of commissary foodsevices(1.79min) was significantly lower than that of conventional foodservice(2.33min) during work time before service (p<0.05). Productivity was significantly lower in foodservices which served less than 400 servings ; n significant differences existed among 401-70, 701-1,100 and 1,101-1,500 meals. The highest productivity was in conventional school foodservices which served 1,501-1,900meals. Labor minutes per meal of commissary school foodservice which served less than 400meals per day was significantly lower than those of foodservice which served 401-1,900meals (p<0.05). Labor minutes per meal, preparation and cleaning were positively correlation in two school foodservice systems.

• 한국관광식음료학회지:관광식음료경영연구
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• 제17권1호
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• pp.41-67
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• 2006

The study is aimed to analyze the influence of FTA(Free Trade Agreement) between Korea and Japan on tourism and to suggest ways to increase tourists exchange between them by considering countermeasures of Korea's tourism based on the analysis and deriving political significance. The results of the study showed that the expected effects of FTA between Korea and Japan on tourism would overall be positive. There would be increases in employment and a higher rate of foreign-exchange earning, which plays a critical role in the cash flow. Therefore the government is required to prepare for several political measures as follows. First, ways to promote investment in tourism have to be established in a systematic way for FTA. Second, restructuring of tourism has to be considered seriously for tourism to be a high value-added industry after FTA. Third, the tourism information industry needs to be included in the tourism promotion act to promote e-tourism using information technology. In addition to this, an expansive cluster strategy needs to be developed, which relates tourism to other industries like culture and movies and to find ways to re-locate and re-educate manpower currently engaged in the tourism industry. Though the study investigated the influence of FTA on tourism through a practical analysis, it was restricted only to Korea. So the influence of FTA between Korea and Japan on the tourism of Japan should be included in further study. Furthermore, in subsequent studies the CGE(Computable General Equilibrium) model will be applied for objective analysis of the effects. Or measuring the ripple effect with multinational inter-industry relation table will be made for the study to make practical contributions to the development of government policy.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.125-125
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• 2017

The roots of Platycodon grandiflorum are commonly used for treating bronchitis, asthma, tuberculosis, diabetes, and other inflammatory diseases. Since the molecular mechanism underlying the roots of the plant is unclear. Therefore, the present study was conducted to profile proteins from liquid cultured tetraploid roots of Platycodon grandi orum fl using high throughput proteome approach. Two-dimensional gels stained with CBB, a total of 659 differentially expressed proteins were identified from the liquid medium cultured tetraploid roots of which 32 proteins spots (${\geq}1.5-fold$) were sorted for mass spectrometry analysis. Out of these 32 proteins, a total of 15 proteins were up-regulated such as Serine carboxypeptidase-like 27, Transcription factor bHLH150, 60 kDa jasmonate-induced protein, Cytosolic Fe-S cluster assembly factor NBP35, Regulatory associated protein of TOR 2 and a total of 17 proteins were down-regulated such as Protein G1-like2, Phenylalanine ammonia-lyase, Fructokinase-2, Trihelix transcription factor GT-3a, Guanine nucleotide-binding protein alpha-1 subunit. However, the frequency distribution of identified proteins was carried out within functional categories based on molecular functions, cellular components, and biological processes. Functional categorization revealed that the most of the identified proteins from the explants were mainly associated with the nucleic acid binding, oxidoreductase, transferase activity, protein binding and hydrolase activity. In addition, the proteomic feedback of tetraploid roots of P. grandiflorum may potentially be used to understand the characteristics of proteins and their functions.

• 동의생리병리학회지
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• 제31권3호
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• pp.188-193
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• 2017

This study investigated the antioxidant activities of distilled water, ethanol and methanol extracts of Plunus mume flower buds (PFB). The various solvent extracts of PFB were evaluated for their total polyphenol, flavonoid, reducing power and free radical scavenging activities by FRAP and DPPH analysis. The ethanol extract of PFB contained significantly higher amounts of total polyphenols (145 mg GAE/g) and flavonoids (25.43 mg QE/g) than methanol (132 and 25.42) and distilled water (113.6 and 18.04). Among solvent extracts of PFB, the ethanol extract showed the highest antioxidant activities. The 100% ethanol extract of PFB contained significantly higher amounts of total polyphenols and flavonoids than 70% and 50% ethanol extracts. Moreover, the 100% ethanol extract of PFB showed high efficacy in DPPH radical scavenging activity and in collagenase inhibition activity. This results suggest that 100% ethanol extract of PFB has the most effective antioxidant capacity compared to the methanol and water extracts tested in the present study. Thus, it can be applied for the effective extraction of functional material from PFB for usage of cosmeceutical and/or food industries.

• 한국식품영양과학회지
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• 제29권4호
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• pp.606-614
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• 2000

Randomly Amplified Polymorphic DNA (RAPD) 기술을 이용하여 국내 식품으 로부터 분리한 Listeria sp. 분리균주에 대한 DNA polymorphism을 분석하고 유연환계를 비 교하며, 유용 marker를 개발할 목적으로 10가지 10-mer primer를 이용하여 PCR을 수행한 결과 5개의 primer(OPA-01, OP-26-01, OP-26-02, OPB-01, OP-26-10)가 선별되었고, 76개 의 DNA 단편이 증폭되었다. 이 중 OPA-01과 OP-26-10 promer에 의한 약 1.5 kb와 0.7 kb의 증폭 band는 모든 Listeria 분리균에서 관찰할수 있었으나, 이 증폭된 DNA 단편은 Listeria sp.에만 특이적인 것은 아니었다. NTSYS 프로그램을 이용해서 Listeria sp. 분리구 간의 유전적 유연관계를 알아본 결과 7개의 cluster로 나누어졌고 유사도는 대체로 0.54~ 0.93사이였으며, 특히, No.3과 No.20은 93%로 가장 높은 유사도를 나타내었고, No.7과 No.24 또는 No.7과 No.45는 54%로 가장 낮은 유사도를 나타내었다. 이러한 결과는 RAPS 기술을 이용하여 쉽게 Listeria sp.를 subspecies로 분류할 수 있음을 시사하였다.

• 한국식품조리과학회지
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• 제2권1호
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• pp.11-16
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• 1986

제조된 지 1개월 이내의 국산 마가린 12가지를 임의로 선택하여 이들의 물리화학적 성질과 지방산 조성을 측정하였다. 마가린은 평균 15.0%의 수분을 함유하고 있었고, 지방 함량은 평균 77.92%이었다. 융점은 평균 $36.18^{\circ}C$로써 $^33.23~42.13{\circ}C$ 의 넓은 분포를 보여 제품간의 차이가 심했다. 산가, 과산화물가 등도 모두 매우 낮게 나타났다. 요오드가는 59. 65~86. 05의 넓은 분포를 보였다. 포장형태에 따라 임의로 분류했던 연질형과 경질형 마가린들은, 집락분석 결과 지방산 조성에 따라서도 같은 두 그룹으로 분류되어, 이들의 원료에 차이가 있음을 유추할 수 있었다. 연질형 마가린은 올레산(18:1)을, 경질형 마가린은 팔미트산(16:0)을 가장 많이 함유하고 있었다. 필수지방산 함량은 제품에 따라 큰 차이를 나타냈는데, 리놀렌산(18:2)의 평균함량은 13. 11%로 나타났으나 대부분의 마가린들은 리놀렌산(18:3)을 거의 함유하고 있지 않았다. 과거보다 마가린의 필수지방산 함량은 증가하였으나, 아직 구미 각 국의 수준에는 못 미치는 것이었다.

• 한국식품조리과학회지
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• 제24권1호
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• pp.1-10
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• 2008

The purpose of this study was to examine the ethical attitudes of consumers in consumption situations by using the consumer ethics scale(CES). Self-administrated questionnaires were completed by 492 consumers, and the resulting data were analysed by frequency, chi-square, one-way ANOVA, factor analysis, reliability analysis, and cluster analysis. We found four different groups of consumers were identified according to their ethical attitudes in consumption situations: 1) the unethical onlooker consumer group, 2) the socialized unethical consumer group, 3) the ethical consumer group, and 4) the severely unethical consumer group. The unethical onlooker consumer group was most widespread prevalent among university students who were in their 20s and down or under, and who received spending money from their parents, and the socialized unethical consumer group was most prevailing prevalent among the higher educated consumers. The women who consumers slightly outnumbered men in an the ethical consumer group, slightly outnumbered the men who did, and many of the university-educated large income earners fell into this group consumed in that way as well. The severely unethical consumer group was quite uncommon among those who were at the age of 41 and up over, and not many of the higher educated people and larger income earners consumed in an the severely unethical consumer group, either. Thus, it's proven this study proves that in terms of the propensity to consume, the consumers' were different from one another in ethical attitudes and behaviors differ according to their demographic characteristics.