• 한국산학기술학회논문지
• /
• 제18권10호
• /
• pp.215-226
• /
• 2017

이 연구는 1984~2015년간 국내 농식품 유통분야 연구동향을 파악하기 위해 텍스트마이닝 기법을 이용한 분석 결과이다. 텍스트마이닝은 빅데이터 분석방법의 일환으로, 많은 정보를 객관적으로 처리하여 연구주제 분류와 트렌드 분석에 이용할 수 있다. 실제분석에는 빈도분석, 토픽분석, 연관성분석을 수행하였다. 자료는 농업부문 4개 학술지 수록논문과 연구보고서 중 농식품 유통 관련 연구 제목를 이용하였다. 그 결과, 농식품 유통분야의 논문 1,126건은 6개 주제로 분류되었다. 2000년대를 기점으로 이전에는 도매와 산지연구가 활발했던 반면 이후에는 소비, 식품, 수출입 연구가 활발한 것으로 나타났다. 또한 로컬푸드와 학교급식 영역의 연구가 증가했다. 농산물 수급연구는 정책 연구보고서에서만 주기적으로 이루어졌으며, 학술논문에서는 2000년대 이후 관심주제에서 멀어지는 경향을 보였다. 2010년대 이후로는 특히 소비연구가 주류를 이루었고, 크게 소비트렌드와 소비자 행동에 관한 다양한 연구가 이루어졌다. 이 결과를 바탕으로 더 정확한 연구동향 분석을 하기위해서는, 정밀한 주제 분류기법으로 방법론을 보완하고 이용 자료를 키워드와 논문초록으로 확대함으로써 구체적인 결과를 도출해야 할 것이다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제32권5호
• /
• pp.701-710
• /
• 2019

Objective: This study investigated the effect of different acute heat stress (HS) levels on chicken meat quality and ultra-structure. Methods: Chickens were randomly divided into 7 groups to receive different HS treatments: i) $36^{\circ}C$ for 1 h, ii) $36^{\circ}C$ for 2 h, iii) $38^{\circ}C$ for 1 h, iv) $38^{\circ}C$ for 2 h, v) $40^{\circ}C$ for 1 h, vi) $40^{\circ}C$ for 2 h, and vii) un-stressed control group ($25^{\circ}C$). Blood cortisol level, breasts initial temperature, color, pH, water holding capacity (WHC), protein solubility and ultra-structure were analyzed. Results: HS temperatures had significant effects on breast meat temperature, lightness ($L^*$), redness ($a^*$), cooking loss and protein solubility (p<0.05). The HS at $36^{\circ}C$ increased $L^*{_{24h}}$ value (p<0.01) and increased the cooking loss (p<0.05), but decreased $a^*{_{24h}}$ value (p<0.05). However, as the temperature increased to $38^{\circ}C$ and $40^{\circ}C$, all the values of $L^*{_{24h}}$, cooking loss and protein denaturation level decreased, and the differences disappeared compared to control group (p>0.05). Only the ultimate $pH_{24h}$ at $40^{\circ}C$ decreased compared to the control group (p<0.01). The pH in $36^{\circ}C$ group declined greater than other heat-stressed group in the first hour postmortem, which contributed breast muscle protein degeneration combining with high body temperature, and these variations reflected on poor meat quality parameters. The muscle fiber integrity level in group $40^{\circ}C$ was much better than those in $36^{\circ}C$ with the denatured position mainly focused on the interval of muscle fibers which probably contributes WHC and light reflection. Conclusion: HS at higher temperature (above $38^{\circ}C$) before slaughter did not always lead to more pale and lower WHC breast meat. Breast meat quality parameters had a regression trend as HS temperature raised from $36^{\circ}C$. The interval of muscle fibers at 24 h postmortem and greater pH decline rate with high body temperature in early postmortem period could be a reasonable explanation for the variation of meat quality parameters.

• 한국식품위생안전성학회:학술대회논문집
• /
• 한국식품위생안전성학회 2002년도 춘계학술발표대회 및 심포지움
• /
• pp.160-161
• /
• 2002

• Journal of Microbiology and Biotechnology
• /
• 제16권2호
• /
• pp.291-294
• /
• 2006

Clostridium perfringens strains were isolated from swine diarrhea in Korea. Three out of nineteen (15.8%) isolates of C. perfringens were found to be enterotoxigenic by PCR analysis. PCR-based genotyping of the three enterotoxigenic isolates of C. perfringens revealed that they were types A, C and D, respectively. These results suggest that various types of enterotoxigenic C. perfringens can cause swine diarrhea, and that the presence of enterotoxigenic type A strain, known to be strongly associated with food poisoning, may cause public health problem in Korea.

• Journal of Microbiology and Biotechnology
• /
• 제15권3호
• /
• pp.616-625
• /
• 2005

It is likely that maltose could provide a good substrate for the bacteria in the intestine, when the pathogenic bacteria invade and colonize in human gut. For better understanding of this organism's maltose metabolism, a mutant that was not able to grow with maltose as a sole carbon source was screened from a library of mutants constructed by a random transposon mutagenesis. By a transposon-tagging method, malPQ genes encoding a maltodextrin phosphorylase and a 4-${\alpha}$-glucanotransferase, were identified and cloned from Vibrio vulnificus. The deduced amino acid sequences of malPQ from V. vulnificus were 48 to $91\%$ similar to those of MalP and MalQ reported from other Enterobacteriaceae. Functions of malPQ genes were assessed by the construction of mutants whose malPQ genes were inactivated by allelic exchanges. When maltose was used as the sole carbon source, neither malP nor malQ mutant was able to grow to a substantial level, revealing that the MalP and MalQ are the only enzymes for metabolic utilization of maltose. The malQ mutant exhibited decreased adherence toward intestinal epithelial cells in vitro, but there was no difference in the $LD_{50}s$ of the wild-type and the malQ mutant in mice. Therefore, it appears that MalQ is less important in the pathogenesis of V. vulnificus than would have been predicted by considering maltose as a most common sugar in the intestine, but not completely dispensable for virulence in mice.

• Journal of Microbiology and Biotechnology
• /
• 제16권5호
• /
• pp.808-816
• /
• 2006

A wbpO gene encoding a putative UDP-N-acetylo-galactosamine dehydrogenase was identified and cloned from Vibrio vulnificus. LPS production was altered by disruption of the wbpO gene through allelic exchanges. The function of the wbpO gene in virulence assessed in vitro and in mice revealed that WbpO is important in both the pathogenesis of V. vulnificus and the biosynthesis of LPS.

• 한국식품위생안전성학회:학술대회논문집
• /
• 한국식품위생안전성학회 2002년도 춘계학술발표대회 및 심포지움
• /
• pp.203-206
• /
• 2002

• 한국식품위생안전성학회:학술대회논문집
• /
• 한국식품위생안전성학회 2002년도 춘계학술발표대회 및 심포지움
• /
• pp.207-210
• /
• 2002

• 한국식품위생안전성학회:학술대회논문집
• /
• 한국식품위생안전성학회 2002년도 춘계학술발표대회 및 심포지움
• /
• pp.164-165
• /
• 2002

• 한국지역사회생활과학회지
• /
• 제22권4호
• /
• pp.669-678
• /
• 2011

The purpose of this study were to analyze the staple food consumption trend of Koreans using KNHANES(Korea National Health and Nutrition Examination Survey) data. Nutrient intake of 38,840 participants of 1998~2008 KNHANES, over 6 year old were analyzed. For the analysis of major staple food intakes, twenty four hour recall data was used. The results were analyzed by SAS Program, as follows. Despite westernized diet, ranking in the primary energy source of food showed similar patterns. But total calory intake was reduced over the past 11 years and percentage of carbohydrate intake was increased. Relative proportions of protein and fat intake was reduced. The major carbohydrate and protein source of Koreans was rice and grains. Pork and ramen were the major fat source food. Although intake levels were different by gender, age and areas, carbohydrate of rice was primary source of energy in Korea.