21가지 장미꽃 품종의 페놀성 화합물 함량 및 항산화 활성

조연재(Yeon Jae Jo),서정현(Jeong Hyun Seo),홍채영(Chae Young Hong),김성태(Seung Tae Kim),최은경(Ehn-Kyoung Choi),김윤배(Yun-Bae Kim),이준수(Junsoo Lee),정헌상(Heon Sang Jeong) 한국식품영양과학회 2021 한국식품영양과학회지 Vol.50 No.4

본 연구는 21품종의 장미꽃에 대한 식품 및 화장품 원료로 사용 가능성을 살펴보기 위해 페놀성 화합물과 항산화 활성을 평가하였다. 총 폴리페놀, 총 플라보노이드 및 타닌 함량은 러버샤이 품종에서 각각 379.70 mg GAE/extract g, 50.10 mg CE/extract g 및 339.44 mg TAE/extract g으로 높게 나타났으며, 칠백리 품종에서 각각 107.25 mg GAE/extract g, 9.46 mg CE/extract g 및 36.31 mg TAE/extract g으로 낮았다. 페놀산 함량은 총 폴리페놀 함량과 유사한 결과를 보였으며, 러버샤이 품종에서 27.40 mg/extract g으로 높았다. 안토시아닌은 대부분 cyanidin-3,5-diglucoside로 확인되었으며 총 안토시아닌 함량은 유니나 품종에서 8.80 mg/extract g으로 가장 높았다. ABTS 및 DPPH 라디칼 소거 활성은 각각 428.10 및 419.59 mg AAE/extract g로 러버샤이 품종에서 가장 높았으며, 항산화 활성과 페놀 화합물의 함량과 높은 양의 상관관계를 보였다. 이러한 결과는 러버샤이와 같은 항산화 활성이 뛰어난 품종들이 관상 목적뿐만 아니라 높은 기능성을 가진 식품 및 화장품의 원료로 사용 가능성이 있다고 판단된다. This study evaluated the functional components and antioxidant activities of 21 different rose flower extracts, to confirm their value as a food and cosmetics ingredient. The highest values of total polyphenol, flavonoid and tannin contents (379.70±1.64 mg GAE/extract g, 50.10±0.76 mg CE/extract g, and 339.44±1.20 mg TAE/extract g, respectively) were obtained in Lover Shy. The proanthocyanidin content ranged from 61.88 mg CE/extract g in the Unina cultivar to 5.34±0.13 mg CE/extract g in the Aileen cultivar. The phenolic acid content obtained was highest in the Lover Shy cultivar (27.40±0.26 mg/extract g), whereas highest levels of anthocyanin (8.83±0.03 mg/extract g) were obtained in the Unina cultivar. High ABTS and DPPH radical scavenging activities were determined in the Lover Shy cultivar (428.10±0.29 and 419.59±3.12 mg AAE/extract g, respectively). Taken together, these results indicate that the antioxidant activity and functional components of Lover Shy cultivar are superior, and this extract can potentially be applied as a food and cosmetic ingredient.

맨드라미(Celosia cristata L.) 꽃 메탄올 추출물로부터 용매분획된 분획물의 항산화활성

김현영(Hyun Young Kim),고지연(Jee Yeon Ko),송석보(Seuk Bo Song),김정인(Jung In Kim),서혜인(Hye In Seo),이재생(Jae Saeng Lee),곽도연(Do Yeon Kwak),정태욱(Tae Wook Jung),김기영(Ki Young Kim),오인석(In Seok Oh),정헌상(Heon Sang Jeong),우 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.11

맨드라미꽃의 식품학적 이용가능성을 확인해 보고자 항산화성분 및 항산화활성에 대해 검토하였다. 맨드라미꽃의 항산화성분과 활성은 메탄올 추출물과 순차적 용매분획물에 대해 측정하였으며, 메탄올 추출물과 hexane, chloroform, ethyl acetate, butanol 및 물 분획물의 추출수율은 각각 23.33, 10.27, 20.00, 13.63, 17.55 및 38.54%였다. 맨드라미 꽃 메탄올 추출물의 총 polyphenol, flavonoid 및 tannin 함량은 각각 6.80 ㎎ GAE/g ME, 2.34 ㎎ CE/g ME 및 6.23 ㎎ TAE/g ME였다. 순차적 용매분획물 중 butanol 분획에서 각각 14.92 ㎎ GAE/g SF, 5.44 ㎎ CE/g SF 및 13.38 ㎎ TAE/g SF로 함량이 높았다. 총 proanthocyanidin 함량은 44.72 ㎍ CE/g ME였고 순차적 용매분획물은 각각 42.47, 44.43, 50.03, 49.12 및 41.80 ㎍ CE/g ER로 용매간 유의적인 차이를 보이지 않았다. 맨드라미꽃의 메탄올 추출물의 DPPH 및 ABTS radical 소거활성은 각각 5.24 및 10.70 ㎎ TE/g ME였고 butanol 분획에서 각각 12.53 및 21.09 ㎎ TE/g SF로 활성이 높았다. 메탄올 추출물의 SOD 유사활성은 7.96 unit/mL로 나타났고 hexane, chloroform, ethyl acetate, butanol 및 물 분획물은 각각 4.56, 6.15, 8.07, 12.36 및 5.21 unit/mL로 butanol 분획의 활성이 높았다. 맨드라미꽃 추출물의 항산화성분과 항산화활성 간에 높은 정의 상관관계를 보였고 맨드라미꽃 추출물이 체내 및 식품에서 유익한 도움을 줄 수 있을 것으로 생각된다. The purpose of this study was to evaluate the antioxidant contents and activities of solvent fractions from methanolic extracts of cockscome flowers. The yield of methanolic extracts from cockscome flowers was 23.33%, whereas those of its solvent fractions (hexane, chloroform, ethyl acetate, butanol, and water) were 10.27, 20.00, 13.63, 17.55, and 38.54%, respectively. Total polyphenolic, flavonoid, tannin, and proanthocyanidin contents of methanolic extracts (ME) were 6.80 ㎎ gallic acid equivalent (GAE)/g ME, 2.34 ㎎ catechin equivalent (CE)/g ME, 6.23 ㎎ tannic acid equivalent (TAE)/g ME, and 44.72 ㎍ CE/g ME, respectively. The highest total polyphenolic, flavonoid, and tannin contents of solvent fractions were 14.92 ㎎ GAE/g solvent fraction (SF), 5.44 ㎎ CE/g SF, and 13.38 ㎎ TAE/g SF in the butanol fraction, respectively. The total proanthocyanidin contents were 42.47, 44.43, 50.03, 49.12, and 41.80 ㎍ CE/g SF, respectively. The DPPH and ABTS radical scavenging activities from cockscome flowers were 5.24 and 10.70 ㎎ Trolox equivalent (TE)/g ME, respectively. The highest DPPH and ABTS radical scavenging activities of the solvent fractions were 12.53 and 21.09 ㎎ TE/g SF in the butanol fraction, respectively. SOD-like activities of methanolic extracts from cockscome flowers were 7.96 units/mL, whereas those of its solvent fractions were 4.56, 6.15, 8.07, 12.36, and 5.21 units/mL, respectively. The results of this study show that notable antioxidant activities in cockscome flowers have significant health benefits.

만성경부통증 환자에 대한 근막이완술과 경피신경 전기자극 치료가 치료기간에 따라 관절가동범위와 통증에 미치는 영향

서현규,공원태,이상용 대한정형도수치료학회 2005 대한정형도수물리치료학회지 Vol.11 No.2

The purpose of this study is compare the effects of two therapeutic processes-ⅰ) conservative Myofacial Release Technique along and ⅱ) Transcutaneous Electrical Nerve stimuliation alone - on the increase in the range of motion(ROM) and on the decrease in patient's pain with chronic Neck pain. The subjects of the study were student with choronic neck pain in Daegu health university. Half of them (10) took conservative Myofacial Release Technique along and the others (10) took Transcutaneous Electrical Nerve stimuliation alone.I used 3D Motion analysis. The range of motion (ROM) in six areas-flexion, extension, left lateral flexion, right lateral flexion, left rotation, right rotation-to check the effectiveness of the two combinations of methods, measured pain with visual analogue scale (VAS) to see the effect on pain reduce. Assement was conducted to the groups before the treatment began and affer the four weeks treatment ended. This study shows that both groups demonstrated significant improvement in ROM increase and pain reduction. Flexion ROM increases were significant in MFR and TENS after treatment 2 weeks and 4 weeks. Extension ROM increases were significant in MFR and TENS after treatment 2 weeks. Right rotation ROM was no significant differences were found in MFR and TENS after treatment all weeks. Right lateral flexion ROM increases were significant in MFR and TENS after treatment 3 weeks. Left lateral flexion ROM increases were significant in MFR and TENS after treatment 1 weeks. But the others no significant differences were in MFR group and TENS group during 4 weeks.

Korean English Teacher's Disempowerment in English-only Classes

Sung-Sam Hwang,Hyo-Sun Seo,Tae-Young Kim 한국사회언어학회 2010 사회언어학 Vol.18 No.1

Hwang, Sung-Sam, SeD, Hyo-Sun, Kim, Tae-Young. 2010. Korean English Teacher's Disempowerment in English-only Classes: A Case Study Focusing on Korea-specific Cultural Aspects. The Sociolinguistic journal of Korea 18(1). In this case study, we have focused on the disempowerment of a Korean English teacher (KET) in English-only classrooms. Six English as a foreign language (EFL) classrooms in a Korean high school were observed and analyzed by using interpretive discourse analysis. Out of the six classes, three representative classrooms were both video- and audio-taped. The results show that the English-only classes could weaken the KETs' power via three mechanisms: (a) calling the KETs' last name for choral greetings at the beginning of the class, (b) students' group solidarity and peer pressure between classmates, and (c) the students' excessively collaborative approach to peer assistance. It is argued that the exclusive English-only instruction disempowers the KETs' status and dismantles their vocational identity. In order to remedy the current situation, within a scaffolding supported by the eclectic use of first language where necessary for effective class management, KETs are empowered and overcome constraints imposed by the limited L2 oral competence of some non-native English teachers.

항타진동이 인접구조물에 미치는 동적영향 및 대처방안에 대한 연구

서상근,김태원,장병순 부산대학교 생산기술연구소 2000 生産技術硏究所論文集 Vol.59 No.-

말뚝항타시 인접구조물에 손상을 주는 진동이 발생하는 것은 잘 알려져 있으며 이러한 진동으로 인한 구조물의 손상으로는 구조물에 생기는 균열 및 지반의 부등침하 등이 있다. 본 논문에서는 탄성이론에 근거하여 이동하는 파에 대한 성질을 정리하고 구조적으로 손상을 가하는 진동과 이러한 손상을 예방할 수 있는 방안을 제시하였다. 또한 현장에서 항타말뚝에 의한 진동을 측정하고 실측치와 본 논문에서 소개한 이론식에 의한 이론치와 비교하고 실제의 진동치로 구조물의 동적변형을 계산하였다. 마지막으로 항타진동에 대한 손상을 예방할 수 있는 대처방안에 대해 논의하였다. It is well known that the vibration of ground which damaged adjacent structures occurs in pile installation. This vibration problem mainly creates structure crack and ground settlement. In this paper, the nature of traveling waves is deduced from the theory of elasticity, structurally damaging vibrations and vibration limit preventing this damage are introduced. Also, through driven-pile test in the field. velocity of ground is measured and compared with values calculated from equation relating pile driving energy to the distance from source to a target structure. Finally managing vibration problem is suggested.

수정과의 품질특성

서지현,성태화,김미리 동아시아식생활학회 2002 동아시아식생활학회지 Vol.12 No.5

To assess the quality of commercial Sujongkwa, we compared physicochemical and sensory characteristics of commercial Sujongkwa with home-made one. Two different brands of Sujongkwa and home-made one were analyzed for physicochemical (sugar content, pH, acidity, color, viscosity, transparency) and sensory characteristics (7-point scoring test, 18 experienced panel members). Separately, we assessed the opinion of food and nutrition specialists about the commercial Sujongkwa. Questionnaires were hand delivered to 530 subjects consisted of university students and faculties of Department of Food and Nutrition at 8 cities (Seoul, Incheon, Yongin, Daejon, Chungju, Daegu, Kwangju, Busan) in Korea and the complete data of 328 subjects were statistically analyzed using SPSS Program for Window (mean, ANOVA, χ²). The questionnaires were consisted of sociodemographics, frequency and occasion of purchasing, opinion of quality and improvement points. Both commercial Sujongkwas were lower in sugar content, transparency, color(L and b value) and viscosity, and commercial brand B was higher in pH and color a value than home-made one. Also, among sensory characteristics, over-all preference and color for brand B were significantly higher than those for brand A and home-made one (p<0.05). Especially, the scores of over-all preference were 1.9 for brand A, 5.7 for brand B, and 4.9 for home-made Sujongkwa. Points to be improved for commercial Sujongkwa were in order of sweetness (33.0%), pungency (24.2%), dried persimmon (19.1%).

리팍시민이 흰쥐의 의액분비 및 생쥐의 소장수송능에 미치는 영향

서희경,태윤식,강시현,이현정,이현화,김승조,황성주 충남대학교 약학대학 의약품개발연구소 1994 藥學論文集 Vol.10 No.-

Rifaximin, the active ingredient in Normix??, has an extremely broad spectrum of action covering all intestinal germs and its absorption is practically zero. It is not appreciably absorbed through the gastrointestinal(GI) tract and not inactivated by gastric juice and is eliminated unchanged in stools. General pharmacology of rifaximin has not been studied sufficiently due to its negligible absorption. In this study, the effect of rifaximin on the gastric juice secretion was investigated in rats and its effect on the gastrointestinal motility was also investigated in mice. Rifaximin had no effect on pH, volume, acidity and pepsin activity of gastric juice in rats and also no effect on GI motility(charcoal transport) in mice. Therefore, rifaximin may have little effect on the GI tract.

다이아몬드 CVD에서 산소 혼입이 기상 조성에 미치는 영향

서문규,심상태 청주대학교 산업과학연구소 2001 産業科學硏究 Vol.19 No.1

Effects of oxygen addition to the methane-hydrogen mixture on the gas phase composition in the diamond CVD reaction were investigated In-line quadrupole mass analysis technic and thermodynamic calculation methods were employed Thermodynamic equilibrium gas-phase compositions calculated by computer simulation and the QMA analysis showed that added O₂ was used to convert CH₄ to CO and these results were discussed with experimental results.

인슐린비의존형 당뇨병 환자에서 심전도상 QT 간격 변수들과 허혈성 심장질환 발생의 관계

서승오,진도균,박진철,진희종,임성희,유형준,박성우,박종태 대한노인병학회 2000 Annals of geriatric medicine and research Vol.4 No.3

기업ㆍ민간 스포츠센터 소비자의 이용만족도 비교 분석

서봉한,노영태,이상봉,이영덕,정용제,박병주 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

The purpose of this study was to analyze differences between satisfaction of members who attend sports center managed by enterprise and those of members who attend sports center managed by private. We hoped through these analysis, consumer could get useful date for choosing sports center and managers could gets data for establishing effective marketing strategy. The objective of this study was 500 members of sports center managed by enterprise and by private in city of Ulsan. Questionnaires were completed through self-administration. We used SPSSWIN 8.0 to analyze gathered data Chi-square test was used for analyzing conditions of members. All statistical data were tested with p〈.05. The result were as follows. 1.Satisfaction of facility and service 1) According to sex, men showed higher satisfaction with enterprise center. In detail, men showed higher satisfaction with enterprise center in exercise facility, dressing room, shower room and sanitation. 2) According to age, 30's show the highest satisfaction with enterprise center in all items but in parking lot. In the comparison of whole mean, 50's showed the highest satisfaction with both enterprise and private center. 3) According to education level, more than college graduation, college student or dropout and high school graduation showed their satisfaction in turn in enterprise center and college student or dropout, more than college graduation and high school graduation showed their satisfaction in turn in private center. In the comparison of whole mean, the satisfaction of enterprise center was higher than that of private center. 4) According to income, all groups but group(100-149 million won) showed higher satisfaction with enterprise center in the comparison of whole mean. 5) According to the type of job, salary worker and functional occupation showed higher satisfaction with enterprise center and educational occupation and owner of small business or store showed higher satisfaction with private center. 2.Satisfaction of offered service 1) According to sex, men showed higher satisfaction with both centers. 2) According to age, in the comparison of whole mean, 50's showed the highest satisfaction with both enterprise and private center. 3) According to education level, more than college graduation, college student and high school graduation showed their satisfaction in turn with both centers. In the comparison of whole mean highschool graduation and college graduation showed the highest satisfaction with enterprise center and college student or dropout showed the highest satisfaction with private center. 4) According to income, all groups but the group(250-299 million wons) showed higher satisfaction with enterprise center in the comparison of whole mean. 5) According to the type of job, salary worker and functional occupation showed higher satisfaction with enterprise center and worker in special jobs and owner of small business or store showed higher satisfaction with private center.