이주 전후 거주요구를 비교한 소규모 단지형 전원주택 계획 연구

전연희(Jeon, Yeon-Hee),고성룡(Koh, Seong-Lyong) 대한건축학회 2017 대한건축학회논문집 Vol.33 No.10

Rural housing had been built as a type of weekend villa before the 1980s, and had been planning for residential housing after 1990s. The development size of rural housing has enlarged from isolated rural housing to rural housing complex, and rural housing developers are varied from individual demander to construction companies of rural housing or a group of people who have the same interest. And with an rising of incomes, people want high residential quality. Accordingly, people prefer rural housing in the natural environment to the urban housing of an over-populated city, and want single-family housing more than collective housing. As a result, the rural residential housing emerges as a new residential alternative. This study conducted an in-site survey, a questionnaire survey and a qualitative survey in order to find the dwelling needs of the residents living in a small rural housing complex with less than 20 households. To generalize the study results as the principle for rural housing plan, it is necessary to survey more cases and to research the dwelling needs of the residents living in various-sized rural housing complexes.

오매 에탄올 추출물의 항산화 활성 및 항암 활성 연구

전연희(Yeon Hee Jeon),권지은(Ji Eun Kwon),김미라(Mee Ra Kim) 동아시아식생활학회 2010 동아시아식생활학회지 Vol.20 No.5

Prunus mume is well known contain many functional materials that play beneficial roles in the human body. Studies have found that many organic acids and polyphenol compounds exist in Prunus mume. In this study, content of total polyphenols and flavonoids, antioxidative activity and cytotoxicity of ethanol extract from Prunus mume were measured. Contents of total polyphenolic and total flavonoid compounds in ethanol extract from Prunus mume were 16.92 ㎎/g and 59.95 ㎎/g, respectively. The IC50 of ethanol extract from Prunus mume were 237.72 ㎍/assay and 239.58 ㎍/assay by DPPH and ABTS radical cation scavenging test, respectively. Additionally, ferric ion reducing antioxidant power (FRAP) value of ethanol extract from Prunus mume was 0.94 mM (FeSO4 eq.) by 800 ㎍/assay. Cytotoxicity of Prunus mume against five kinds of cancer cell lines increased as the extract concentration increased. Especially, cytotoxicity of the ethanol extract against A-549 (lung cancer line) was higher than that against any other cancer cell line by both MTT and SRB assay. These results show that ethanol extract of Prunus mume has considerably high antioxidative and cytotoxic activities.

오미자(Schizandra chinensis Baillon) 에탄올 추출물의 항산화 활성 및 항돌연변이 활성 분석

전연희(Yeon-Hee Jeon),길진희(Jin-Hee Kil),임소민(So-Min Lim),김미현(Mee-Hyun Kim),김미라(Mee-Ra Kim) 동아시아식생활학회 2008 동아시아식생활학회지 Vol.18 No.5

In this study, the antioxidative activity and antimutagenic effect of ethanol extracts from Schizandra Chinensis Baillon were assessed with regard to natural antioxidants. The antioxidative activity and antimutagenicity of ethanol extracts from Schizandra chinensis Baillon were evaluated by measuring the radical-scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, and by performing the Ames test using 4-nitroquinoline-1-oxide (4-NQO) and sodium azaid as a mutagen with Salmonella typhimurium TA100, respectively. The total polyphenolic compound and flavonoid compound contents of Schisandra chinensis Baillon were also assessed. The DPPH radical-scavenging activity of ethanol extracts from Schisandra chinensis Baillon was 57.2% on the 500 μg/assay. The IC?? on DPPH radical-scavenging effect of ethanol extract was 435 ㎍/assay. In addition, the inhibition rates of ethanol extract from Schisandra chinensis Baillon toward mutagenicity induced by 4-NQO and sodium azide were 82.45% and 45.3%, respectively. Furthermore, the total polyphenol and total flavonoid contents of the extract were 9.53 ㎎/g and 3.97 ㎎/g, respectively. These results indicate that the ethanol extract from Schisandra chinensis Baillon evidences a fairly good antioxidative and antimutagenic effect.

중학생들의 또래 괴롭힘 참여유형에 따른 도덕 판단의 차이: 결과의 수혜자와 상황의 책임소재를 바탕으로

전연희 ( Yeon Hee Jeon ),심은정 ( Eun Jung Shim ),이윤형 ( Yoon Hyoung Lee ) 한국청소년복지학회 2015 청소년복지연구 Vol.17 No.1

The purpose of this study was to examine whether moral judgments in moral dilemmas differs according to participant roles in bullying situation(i.e., bully-followers, bystanders, defenders). Specifically, the study explored differences in moral judgment based on the beneficiary of the choice(self vs others) and the attribution of the responsibility. 382 middle school students in Ulsan city completed the Participant Role Questionnaire and the scale of moral judgment in moral dilemmas. The major findings were the following; First, the moral judgment in moral dilemmas differed according to the beneficiary of the choice and the attribution of the responsibility. In overall moral judgment, participants evaluated morally more acceptable in case that the beneficiary of choice was oneself and responsibility can be attributed to victims. Moreover, the moral judgments were partly differed according to participant role in bullying and in the types of judgments. While the judgement of morality and the possibility of the blame did not differ based on the participants’ roles, bystanders deemed that the degree of violation was lower compared to defenders in the case of the judgment of one’s act,. Also, in the judgment of one’s act, bystanders evaluated that it is morally tolerable in case that victims are responsible in that situation. Such results suggested that the change of bystanders’ perception regarding the responsibility of victims might be an important factor in the change of their role in bullying situation. Current findings indicate that moral judgments in their moral dilemmas vary depending on the participant role, the beneficiary of choice and the attribution of responsibility. The current study also suggested that efforts of effective prevention and intervention strategies targeted at bullying need to consider adolescents’ moral judgment tendency.

산수유 에탄올 추출물의 식중독 및 식품 부패 세균에 대한 항균 활성 분석

전연희(Yeon-Hee Jeon),박미혜(Mi-Hye Park),김미라(Meera Kim) 동아시아식생활학회 2012 동아시아식생활학회지 Vol.22 No.5

The antibacterial activity of the ethanol extract of Cornus officinalis against some bacteria related to foodborne illness and food spoilage was investigated. In the case of the disc diffusion assay, clear zones due to the inhibition of proliferation by Cornus officinalis extract were 8.5~18.3 ㎜ at 4,000 ㎍/disc. The inhibitory effect of Comus officinalis was as follows: Escherichia. coli ≥ Listeria monocytogenes ≥ E. coli O157:H7 > Bacillus cereus > Staphylococcus aureus > Pseudomonas aeruginosa > Salmonella typhimurium. In addition, the MIC of Comus officinalis extract toward B. cereus was the lowest at 1,000 ppm. The extract inhibited the growth of E. coli, L. monocytogenes, E. coli O157:H7, and Bacillus cereus throughout the growth stage. However, the growth of P. aeruginosa, S. aureus, and S. typhimurium was only inhibited by the extract during the lag phase. The constituents of all cells tested were released, especially E. coli and E. coli O157:H7. Observation of the cells using SEM demonstrated a morphological change and disruption of cells in response to treatment with Cornus officinalis extract, Based on these findings, the ethanol extracts of Cornus officinalis showed strong antimicrobial activity against all tested bacteria, indicating that Cornus officinalis can be a useful natural antimicrobial reagent.

서리태 에탄올 추출물의 항산화 활성 및 암세포 증식 억제 효과

전연희 ( Yeon Hee Jeon ),원지혜 ( Ji Hye Won ),권지은 ( Ji Eun Kwon ),김미라 ( Mee Ra Kim ) 한국식품조리과학회(구 한국조리과학회) 2011 한국식품조리과학회지 Vol.27 No.3

The antioxidant activity and cytotoxic effect of an ethanol extract from Seoritae were analyzed to develop new functional food materials. The antioxidant activity of Seoritae was determined by measuring electron donating ability with 1,1-diphenyl-2picrylhydrazyl (DPPH) and 2-2`-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assays, as well as the ferric reducing antioxidant power (FRAP) assay. The cytotoxic effect of the Seoritae ethanol extract was measured with the 3-(4,5-dimethylthiazol-2-yl)-2,5-dipheltetrazolium (MTT) and sulforhodamine B (SRB) assays. As a result, the electron donating abilities of Seoritae against the DPPH and ABTS radicals were 63.75% and 87.68% at 500 μg/assay, respectively. The IC50 values of Seoritae in the DPPH and ABTS assays were 385.39 μg/assay (128.46 μg/mL) and 209.39 μg/assay (51.83 μg/mL). Additionally, the FRAP value of Seoritae was 0.84 FeSO4 eq. mM at 800 μg/assay. The total amounts of polyphenols and flavonoids, which indicate the antioxidant capability of Seoritae extract were 1.65 mg/g and 0.59 mg/g, respectively. Moreover, Seoritae extract showed a high cytotoxic effect of up to 81% against human cancer cells, particularly A-549 and HeLa cells. The growth inhibition rate of Seoritae extract against A-549 and HeLa cells was up to 76.48% and 75.67% in the MTT assay, and 78.98% and 80.54% in the SRB assay, respectively. The results of this study suggest that an ethanol extract of Seoritae is a potentially good natural antioxidant.

토사자(Cuscutae Semen) 에탄올 추출물의 항산화 교과 및 항돌연변이 활성

전연희 ( Yeon Hee Jeon ),김미현 ( Mi Hyun Kim ),김미라 ( Mee Ra Kim ) 한국식품조리과학회 2008 한국식품조리과학회지 Vol.24 No.1

복분자 딸기(Rubus coreanum) 에탄올 및 열수추출물의 항돌연변이 활성과 암세포 성장 억제 효과

전연희 ( Yeon Hee Jeon ),최상원 ( Sang Won Choi ),김미라 ( Mee Ra Kim ) 한국식품조리과학회 2009 한국식품조리과학회지 Vol.25 No.3

산수유(Cornus officianalis) 에탄올 추출물의 항산화, 항돌연변이 활성 및 암세포 성장 억제 효과

전연희(Yeon Hee Jeon),김미현(Mi Hyun Kim),김미라(Mee Ra Kim) 한국식품영양과학회 2008 한국식품영양과학회지 Vol.37 No.1

본 연구에서는 산수유 에탄올 추출물의 항산화능, 항돌연변이 및 항암활성을 분석하여 새로운 생리활성 물질의 탐색과 고부가가치의 기능성식품으로서의 이용 가능성을 알아보고자 하였다. 산수유 에탄올 추출물의 전자공여능은 농도의존적으로 증가하여 500 ppm의 농도에서는 합성항산화제인 BHT보다 높았고 천연항산화제인 L-ascorbic acid와 유사하였다. 뿐만 아니라, S. Typhimurium TA100에 대해 산수유 에탄올 추출물은 직접돌연변이원인 4-NQO 사용 시항돌연변이 효과가 우수한 것으로 나타났다. 또한, 산수유에탄올 추출물은 700 μg/plate 첨가하였을 때 인체 간암 세포와 자궁경부암 세포의 증식을 모두 78% 이상 억제하였다. 산수유 에탄올 추출물은 비교적 높은 함량의 폴리페놀과 플라보노이드를 함유하고 있어, 이들 물질이 항산화와 항암효과에 영향을 미칠 것으로 사료되었다. 그러나 산수유에는 비타민 C를 비롯한 다른 항산화 성분도 함유되어 있으므로 이들의 항산화성도 추출물의 항산화력에 영향을 주었을 것으로 생각된다. 결론적으로, 산수유 에탄올 추출물은 항산화능과 항돌연변이 활성이 있었으며 인체 간암세포, 자궁경부암 세포 및 대장암 세포에 대해 항암 활성이 있는 것으로 나타나 기능성식품의 소재로서의 이용 가능성을 보여주었다. The antioxidative, antimutagenic and cytotoxic activities of ethanol extract from Cornus officianalis have been studied. The antioxidant activity of the ethanol extract was measured by 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. The inhibition effects on the mutagenicity in Salmonella Typhimurium TA100 were evaluated by Ames test and cancer cell inhibitory effects in Hep3B cell and HeLa cell were tested by MTT assay. Cornus officianalis had an important free radical-scavenging activity towards the DPPH radical. At a concentration of 500 ppm, the DPPH radical-scavenging activity of Cornus officianalis was similar to that of L-ascorbic acid. None of the extracts produced a mutagenic effect on S. Typhimurium TA100. The ethanol extract from Cornus officianalis showed about 77% of inhibition at 500 ppm on the mutagenicity induced by 4-nitroquinoline-1-oxide. The extract from Cornus officianalis showed strong cytotoxicity against Hep3B and HeLa cells, with inhibition of 83 and 78% at a dose of 700 μg/plate, respectively. Moreover, the ethanol extracts had 34.33 mg H.E/g of polyphenols and 5.67 mg Q.E/g of flavonoids, respectively. Therefore, the present study showed antioxidative, antimutagenic and anticancer potential of the ethanol extract from Cornus officianalis.

연구논문 : 복분자 에탄올 추출물의 식중독 관련 위해 세균에 대한 항균활성 분석

전연희 ( Yeon Hee Jeon ),순샤오칭 ( Xiao Qing Sun ),김미라 ( Mee Ra Kim ) 한국식품조리과학회(구.한국조리과학회) 2012 한국식품조리과학회지 Vol.28 No.1

This study analyzed the antibacterial activity of a Rubus coreanum (Bokbunja) ethanol extract. The antimicrobial activity was determined by disc diffusion, minimum inhibitory concentration (MIC), and growth inhibition methods with seven kinds of bacteria related to foodborne illness (Bacillus cereus, Escherichia coli, Escherichia coli O157:H7, Listeria monocytogenes, Pseudomonas aeruginosa, Staphylococcus aureus, and Salmonella typhimurium). In the results, disc diffusions of the ethanol extract from R. coreanum (9.8-17.5 mm at 4,000 μg/disc) clearly showed the antimicrobial activity of the extract against all tested microorganisms. Rubus coreanum promoted an inhibitory effect as follows: E. coli O157:H7 > P. aeruginosa > L. monocytogenes > E. coli > S. aureus > B. cereus ≥ S. typhimurium. In the MIC test, R. coreanum showed high antimicrobial effect against L. monocytogenes at 500 ppm. Moreover, the R. coreanum ethanol extract showed strong growth inhibition against microorganisms, similar to the MIC results. These results show that a R. coreanum ethanol extract has powerful antimicrobial activity against all tested microorganisms, suggesting that R. coreanum will be useful as a potential natural preservative.