• Journal of the Korean Society of Food Culture
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• v.38 no.2
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• pp.83-98
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• 2023

This study summarizes the research methods, subjects, research processes, and achievements of major researchers by analyzing previous research results on Korean food history. The goal of the current study aimed to seek the methodology and direction of 'food history research'. Literature data from 1945 to 2022 were examined. Results of excavation research on ancient food literature were divided into the following stages: the 1980s, when the foundation for 'cataloging' was laid, and the 2000s, when 'digitization' was achieved. Achievements of each period were collected, and the achievements and limitations were analyzed. Next, the research results were classified into 'Food technology history', 'Recipe change history', and 'Food culture and dietary history'. We observed that around the 2000s, anthropology and folklore research perspectives were reflected, and the research on 'history of diet' reached a turning point. Our results indicate the possibility that food history can develop as a special historical area. This could be achieved by establishing an exchange system with other disciplines and creating a systematic curriculum.

• Journal of Microbiology and Biotechnology
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• v.2 no.4
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• pp.278-283
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• 1992

Aldehyde production by cells of a methanol utilizing yeast, Hansenula nonfermentans KYP-1 was improved when they were grown in a methanol-limited continuous culture, in comparison with cells grown in a batch culture. A higher cell yield was also obtained in continuous culture than in batch culture. This could be due to the fact that a lower methanol concentration was maintained in the jar fermentor to minimize growth inhibition by methanol. A maximum cell productivity of 0.219 g.$liter^{-1}.hr^{-l}$ and a cell yield of 47% were obtained at dilution rates of 0.1 $hr{-1}$ and 0.06 hr{-1}, respectively. The greatest amount of aldehyde was measured at a dilution rate of 0.08 $hr{-1}$. Under optimum reaction conditions, 915.7 mM of acetaldehyde was produced from 1.5 M ethanol after 21 hours reaction, with a conversion rate of 61%. Propionaldehyde and acrolein were produced with conversion rates of 32.7% and 44%, respectively.

• The International Journal of Costume Culture
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• v.12 no.2
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• pp.107-120
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• 2009

This research extracted and analyzed 54 papers on knit field published in "The Research Journal of the Costume Culture", "Journal of The Korean Society of Clothing and Textiles", "The Journal of The Korean Society of Costume", "The Science and Technology of Clothing Appearance and Fit", "Journal of The Korean Society of Design Culture", "Textile Science and Engineering (Formerly Journal of the Korean Fiber Society", "Journal of The Korean Society for Clothing Industry", "Journal of the Korean Living Science Association", and "Journal of The Korean Home Economics Association" to analyze papers on knit field in textile science in depth. The result of the research shows that the number of papers is small compared to other fields and it is being researched limitedly due to relatively high ratio of subjects such as designs and patterns, knit hand assessment, and manufacturing fashion trends.

• Journal of Marine Bioscience and Biotechnology
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• v.9 no.2
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• pp.30-34
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• 2017

Microorganisms are contained filtered sea water that is why we often observed co-existing copepod species in the large-scale rotifer culture tanks. In this study, we investigated about taxonomical study of co-existing copepods in Brachionus rotifer mass culture tanks of several seafarming centers at Jeju-do and Pusan, Korea by microscope. Also, we counted number of copeods and density in 10 mL of cultured sea water and distinguished growing patterns and sex. As results, we can identified 4 species copepods, 2 species of Tisbe, 1 species of Tigriopus and 1 species of Apocyclops.

• Journal of Microbiology and Biotechnology
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• v.3 no.4
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• pp.285-291
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• 1993

Growth responses of some intestinal bacteria such as bifidobacteria and Clostridium perfringens to the extracts of certain foodstuffs were investigated in vitro. Among edible mountain herbs, the extracts of several chui-na-muls (Aster tataricus, Ligularia fischeri and Aster scaber) had an inhibitory activity against C. perfringens on the agar plate and the water extract of Aster scaber worked selectively on it among intestinal bacteria. The water extract showed growth-promoting effect toward bifidobacteria such as B. adolescentis, B. animalis, B. bifidum, B. infantis and B. thermophilum in the broth culture. When the faecal inoculum was incubated in the culture with the extract, the population of C. perfringens decreased, whereas that of bifidobacteria increased by $10^3$ scale.$\beta$-glucuronidase activity in the culture with the water extract of Aster scaber digested with pepsin and pancreatin was lower than that in the control culture.

• Plant Biotechnology Reports
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• v.2 no.1
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• pp.1-6
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• 2008

Cotyledonary leaves of tomato cv. Megha were transformed with the hepatitis B virus 's' gene, which encodes surface antigen. Six plant expression cassettes (pHBS, pHER, pEFEHBS, pEFEHER, pSHER and pEFESHER) were used to assay the possible expression levels by agroinfiltration. The maximum transient expression level of 489.5 ng/g D.W. was noted in pEFEHER-infiltrated cotyledonary leaves. Transgenic tomato plants with pEFEHBS and pEFEHER expression cassettes were regenerated and characterized by molecular analysis. The expression of the antigen in the fruits was confirmed by RT-PCR and ELISA analysis. This is the first report on the expression of hepatitis B surface antigen in tomato.

• Human Ecology Research
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• v.53 no.5
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• pp.557-566
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• 2015

This study investigated the effects of multi-culture acceptability and multi-culture teaching efficacy on young child-teacher relationships. The teachers' attitude towards multi-culture education was included in the analysis as a mediator between multi-culture acceptability and multi-culture teaching efficacy. Participants were 295 teachers and 295 young children between 3 and 5 years in childcare centers located in Seoul, Incheon, Ulsan, Gyeonggi, and North Gyeongsang Province. Teachers completed questionnaires regarding multi-culture acceptability, multi-culture teaching efficacy, and attitude towards multi-culture education. Collected data were analyzed by descriptive statistics, Pearson's correlation, Structural Equation Model, and Sobel test with SPSS ver. 18.0 and AMOS ver. 21.0. The results were as follows. First, the subscale of multi-culture acceptability and multi-culture teaching efficacy generally showed a positive correlation with closeness and conflict in the subscale of young child-teacher relationships. Second, teacher's multi-culture acceptability directly influenced the young child-teacher relationship. In addition, the impact of multi-culture teaching efficacy on young child-teacher relationship was mediated perfectly by the multi-culture education attitude. The results suggest that the multi-culture teaching efficacy promote early childhood multicultural education attitudes and that can be changed to positive teacher relationships.

• Journal of Plant Biotechnology
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• v.1 no.1
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• pp.1-7
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• 1999

Large-scale cultures of plant cell, tissue, and organ have been achieved by using BTBB. When different sized BTBBs (5 L, 20 L, 100 L, 300 L, and 500 L) were tested for the culture of yew cells (Taxus cuspidata Sieb. et Zucc.), cell growth increment reached to 94.5% in SCV after 24 days of culture with 30% of inoculation cell density. However, there were some variations in the production of taxol and its derivatives among the BTBBs of different size. Approximate 4 ㎎/l of taxol and 84 ㎎/l of total taxanes were obtained by using a 500L BTBB after 6 weeks of culture. With a 20L BTBB, about 20,000 cuttings of virus-free potatoes (cv. Dejima) could be obtained by inoculating 128 explants and maintaining 8 weeks under 16 hr light illumination. The frequency of ex vitro rooting of the cuttings revealed as more than 99% under 30% shade. By incorporating two-stage culture process consisting of multiple bulblet formation in solid medium and bulblet development in liquid medium, mass propagation of lily through bioreactor seemed to be possible. In the case of 'Marcopolo', the growth of mini-bulblets in BTBB was nearly 10 folds faster than that of the solid medium. Time course study revealed that maximum MAR yield of ginseng (Panax ginseng C. A. Meyer) in a 5 L and 20 L BTBB after 8 weeks of culture was 500 g and 2.2 ㎏, respectively. By cutting the MAR once and/or twice during the culture, the yield of root biomass could be increased more than 50% in fresh weight at the time of harvest. With initial inoculum of 500 g of sliced MAR in a 500 L BTBB, 74.8 ㎏ of adventitious root mass was obtained after 8 weeks of culture. The average content of total ginseng saponin obtained from small-scale and/or pilotscale BTBBs was approximately 1% per gram dry weight. Based on our results, we suggest that large-scale cultures of plant cell, tissue, and organ using BTBB system should be quite a feasible approach when compared with conventional method of tissue culture.

• The International Journal of Costume Culture
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• v.5 no.1
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• pp.67-72
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• 2002

Consumer behavior is driven by culture; and culture is contextual. Therefore, human behaviors such as those exhibited in consumption behavior should not be measured and compared cross-culturally by using cultural specific mea-sures or paradigms which assume a universal reality, time and context free. Since it is known that consumption behavior is influenced by culture, and cultures in the United States differ from those in Korea, the assumption of universal ‘truths’ which can be known is inappropriate. To employ a paradigm with invalid assumptions automatically leads to the lack of validity, a must for truth claims in the positivist paradigm. Thus, 'truths' in the research reported must be suspect.

• Cross-Cultural Studies
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• v.24
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• pp.62-83
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• 2011

The totality of language learning comprises three integrated components: linguistic, cultural, and attitudinal (Wilkes, 1983).Positively sensitizing students to cultural phenomena is urgent and crucial. A positive attitude toward L2 culture is a factor in language learning that leads to cross cultural understanding. This research examined, through a survey analysis, how three groups of students (one high school group and two university student groups) viewed the role of their foreign culture (i.e., American and British cultures) in achieving cultural understanding. The focus was upon how EFL learners approach the target language culture as well as their own culture.