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조리 방법에 따른 고구마줄기의 Phytochemical 함량과 항산화 활성 비교
양세희, 정혜진, 성예지, 이하나, 이세윤, 양진우, 이준수 忠北大學校 農業科學硏究所 2017 農業科學硏究 Vol.33 No.1
Vegetable consumption is associated with health benefits. Recently, the interest in these food groups has grown among due to the identification of new compound in their chemical composition. Most of the vegetables are cooked by blanching, boiling, steaming, microwaving before consumed. These cooking processes may change not only food physical characteristics but also chemical composition. The present study was undertaken to investigate the effect of different cooking methods on phytochemical content and antioxidant capacity in Ipomoea batatas (L.) Lam stem. The result of study, Total polyphenol of phytochemical in Ipomoea batatas (L.) Lam stem was 6.88-12.65 mg GAE/100 g and flavonoid was 3.16-10.46 mg CE/100 g. Compared with the raw of Ipomoea batatas (L.) Lam stem, all cooking methods were found to significant correlations between the antioxidant activity assessed by ABTS, DPPH and polyphenol(p<0.05). These results can be provide the basic data how to prevent lose of nutrition in Ipomoea batatas (L.) Lam stem when cooking.
Flashlight into the function of unannotated C11orf52 with global and glyco- pretomic analysis
Yeji Yang,Heeyoun Hwang,Ji Eun Im,Kyungha Lee,Seong Hee Bhoo,Jong Shin Yoo,Yun-Hee Kim,Jin Young Kim 한국당과학회 2022 한국당과학회 학술대회 Vol.2022 No.07
For an enhanced understanding of the biological mechanisms of human disease, it is essential to investigate protein functions. In a previous study, we developed a prediction method of gene ontology (GO) terms by the I-TASSER/COFACTOR result, and we applied this to uPE1 in chromosome 11. Furthermore, to validate the bioinformatics prediction of C11orf52, we utilized affinity purification and mass spectrometry to identify interacting partners of C11orf52. Using immunoprecipitation methods with three different peptide tags (Myc, Flag, and 2B8) in HEK 293T cell lines, we identified 79 candidate proteins that are expected to interact with C11orf52. The results of a pathway analysis of the GO and STRING database with candidate proteins showed that C11orf52 could be related to signaling receptor binding, cell−cell adhesion, and ribosome biogenesis. Then, we selected three partner candidates of DSG1, JUP, and PTPN11 for verification of the interaction with C11orf52 and confirmed them by colocalization at the cell−cell junctions by coimmunofluorescence experiments. In fact, cell-cell interactions and cell adhesion could be affected by glycosylation of adhesive molecules. Here, we focused on changes in protein expressions and glycosylation patterns caused by overexpression of C11orf52. Differentially expressed proetins and glycosylations were identified with TMT-based quantitative global and glyco- pretomic analysis and it will help to clarify how C11orf52 works in cells.
Yeji Kim,Minkyu Park,Do Jin Nam,Eun Hye Yang,Jae-Hong Ryoo 대한직업환경의학회 2020 대한직업환경의학회지 Vol.32 No.-
Background: This study aimed to identify the relationship between exposure to bisphenol A (BPA) and seafood consumption using a nationally representative data of the general Korean population. Methods: This study was conducted on 5,402 adults aged 19 years and older (2,488 men, 2,914 women) based on the second Korean National Environmental Health Survey (2012–2014). We stratified the data according to gender and analyzed urinary BPA concentrations in terms of sociodemographic characteristics, health behavior, dietary factor, and seafood consumption. In the high and low BPA exposure groups, the odds ratios (ORs) were calculated using logistic regression analysis according to the top 75th percentile concentration. Results: In men, large fish and tuna and other seafood categories had significantly higher ORs before and after adjustment in the group who consumed seafood more than once a week than in the group who rarely consumed seafood, with an adjusted value of 1.97 (95% confidence interval [CI]: 1.12–3.48) and 1.74 (95% CI: 1.10–2.75), respectively. In the shellfish category, the unadjusted OR was 1.61 (95% CI: 1.00–2.59), which was significantly higher in the group who consumed seafood more than once a week than in the group who rarely consumed seafood. However, the OR after adjusting for the variables was not statistically significant. In women, the frequency of seafood consumption and the concentration of urinary BPA were not significantly associated. Conclusions: BPA concentration was higher in men who frequently consumed large fish and tuna, shellfish and other seafood in this study.
Dietary intake of fats and fatty acids in the Korean population
Yeji Baek,Ji-Yun Hwang,Kirang Kim,Hyun-Kyung Moon,Sanghui Kweon,Jieun Yang,Kyungwon Oh,Jae Eun Shim 한국영양학회 2015 Nutrition Research and Practice Vol.9 No.6
BACKGROUND/OBJECTIVES: The aim of this study was to estimate average total fat and fatty acid intakes as well as identify major food sources using data from the Korea National Health and Nutrition Examination Survey (KNHANES) VI-1 (2013). SUBJECTS/METHODS: Total fat and fatty acid intakes were estimated using 24-hour dietary recall data on 7,048 participants aged ≥ 3 years from the KNHANES VI-1 (2013). Data included total fat, saturated fatty acid (SFA), monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), n-3 fatty acid (n-3 FA), and n-6 fatty acid (n-6 FA) levels. Population means and standard errors of the mean were weighted in order to produce national estimates and separated based on sex, age, income, as well as residential region. Major food sources of fat, SFA, MUFA, PUFA, n-3 FA, and n-6 FA were identified based on mean consumption amounts of fat and fatty acids in each food. RESULTS: The mean intake of total fat was 48.0 g while mean intakes of SFA, MUFA, PUFA, n-3 FA, and n-6 FA were 14.4g, 15.3 g, 11.6 g, 1.6 g, and 10.1 g, respectively. Intakes of MUFA and SFA were each higher than that of PUFA in all age groups. Pork was the major source of total fat, SFA, and MUFA, and soybean oil was the major source of PUFA. Milk and pork were major sources of SFA in subjects aged 3-11 years and ≥ 12 years, respectively. Perilla seed oil and soybean oil were main sources of n-3 FA in subjects aged ≥ 50 years and aged < 50 years, respectively. CONCLUSIONS: Estimation of mean fatty acid intakes of this study using nationally represented samples of the Korean population could be useful for developing and evaluating national nutritional policies.
변량시비장치 도입을 위한 측조시비장치 비용편익분석 연구
강예지 ( Yeji Kang ),홍영기 ( Youngki Hong ),김국환 ( Gookhwan Kim ),김경철 ( Kyung-chul Kim ),권경도 ( Kyung-do Kwon ),양창주 ( Changju Yang ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2
지속되는 원자재가격상승과 환경문제 대두로 비료 사용은 농업에서 중요한 요인으로 작용한다. 농업에서 측조시비장치는 이앙기가 모를 정식하면 측면에 비료를 살포하는 기능을 수행함으로써 농업노동력 감축에 효과적이다. 변량시비장치는 측조시비장치를 기반으로 비료 살포량을 조절할 수 있는 장치로써 포장 내에서 모를 정식할 때 토양에 함유된 영양분에 따라 필요 비료량을 조절하여 살포한다. 본 연구는 변량시비장치를 도입하기 위한 기초연구로 변량시비장치를 이앙기에 장착함으로써 발생하는 경제적 효과를 수치화하는 데 목적이 있다. 관행 기술인 측조시비장치에 대해 감가상각을 시행하였으며 정액법을 적용하였다. 구동부가 ERP방식의 6조식 이앙기에 부착되는 측조시비장치를 대상으로 감가상각 후 현재 가치액과 누적 유지보수비의 비용편익분석을 시행하였다. B/C Ratio는 4년 0.86, 5년 2.15로 5년째 측조시비장치의 현재 가치액을 유지보수비가 초과하게 된다. 감가상각은 농기계화 촉진법 시행규칙 중 농업기계의 내용연수에 따라 동력 이앙기 및 그 부속작업기 내용연수를 적용하였으며 총비용을 고정비와 유동비로 분류하여 유지보수 부품에 대해 별도로 감가 상각을 시행하여 유지보수비를 산출하였다. 향후 연구에서 분석값을 바탕으로 손익분기분석을 시행하여 신규 농업기술이 관행 농업기술보다 경제적 우위를 갖는 생산면적과 생산량을 수치화할 예정이다.
소셜 뉴스 이용과 뉴스 관여가 세대별 정치 참여 행동에 미치는 영향
권예지(Yeji Kwon),이지영(Jee Young Lee),양소은(Soeun Yang) 한국언론학회 2021 한국언론학보 Vol.65 No.1
Adolescents’ sharing of digital news is an increasingly significant issue within the field of digital citizenship, and accessing and using digital information has been shown to affect their lives and futures. This study seeks to understand the impact of young people’s engagement with news-related communication and news literacy education on their news consumption and civic engagement by examining the differences in the significance of factors between adolescent and adult groups. A secondary data analysis was conducted using national survey datasets on youth news media use (13 to 18 years old, N=1,665) and Korean news media use (18 to 60 years old, N=3,799). This study reveals that news access via social media is positively correlated with news engagement (commenting and sharing) regardless of age cohort. However, significant generational gaps in media, which determine the influence of social news use on news commenting and sharing practices, are observed in our regression models. News literacy education is related to engagement with news commenting for adolescents and news sharing for adults. For adolescents, news literacy education is related to increased participation in online public discussions, whereas for adults, it is related to increases in news sharing on different platforms. This study reaffirms the path from news use to news engagement and the paths from news engagement to civic engagement. Also, the media for social news are important to increasing civic engagement. Our findings suggest that social news shared via messaging apps significantly predicts civic engagement among adolescents; whereas social news shared via social media significantly predicts civic engagement among adults. Recently, researchers have begun to recognize the different news consumption practices that occur within the different types of online spheres where different types of social networks are based. Our results confirm these different practices depending on the type of social network and the generational differences in networked news engagement and sharing practices. As news engagement of news consumers, which was not prominent in the context of conventional news consumption, has become more readily available in the digital news environment, the significance of news engagement is highlighted in this study. This study will further discuss the impact of news commenting and sharing practices on online civic communication among adolescents.