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.

유치열기 다발성치아우식증 아동의 구강내 Streptococcus mutans 및 Lactobacillus의 분포에 관한 연구

정태성 大韓小兒齒科學會 1990 大韓小兒齒科學會誌 Vol.17 No.1

With a purpose of elucidating the causative relationship between specific oral baterial species and rampant dental caries, the distributions of S. mutans and Lsctobacillus in dental plaque from 21 children with pampant dental caries in the primary dentition were examined. The following results were obtained: 1. S. mutans was detrected in the plaque of all children and the distribution to total cultivable oral microorganism was 3.75%, and it was significantly higher (P<0.05) in plaque taken from carious surface than from sound surface. 2. Lactobacillus was detected in the plaque of all children and the distribution to total cultibale oral microorgaism was 1.75%, and it was significantly higher (P<0.05) in plaque taken from carious surface than from sound surface.

3축 제어용 시뮬레이터의 로드 프로파일 재현 소프트웨어 개발

정상화,이규태,장완식,류신호 朝鮮大學校 機械技術硏究所 2001 機械技術硏究 Vol.4 No.2

실제 운동조건과 같은 환경을 제공하는 다축 제어용 시뮬레이터는 설계나 평가에 있어 대단히 편리하면서도 경제적인 이점을 제공하여 준다. 일반적으로 완성차의 경우 설계에서부터 개발, 실험에 이르기까지 시간과 개발과정에 막대한 비용이 소모되고 있다. 그리고 자동차 부품업체에서는 완성차업체의 부품 검사서의 요구에 의해 시뮬레이터를 구비하고자 노력하고 있으나, 재현소프트웨어의 미비로 어려움을 겪고 있는 실정이다. 본 논문은 개발된 프로그램을 이용하여 기아자동차의 내구로(belgian road), 대우자동차의 도시로(city road), 고속도로(highway), 자갈로(gravel road)등의 신호를 입력하여 실제 실험을 수행함으로서 로드 프로파일 재현 소프트웨어의 타당성을 검증하였다. 이 과정에서 실험차량의 현가장치와 타이어가 비선형이기 때문에 초기 구동화일에 대한 응답신호는 요구되는 신호와 차이가 발생하였는데 이 오차는 반복 개선작업을 통하여 최소화시키면서 응답신호가 요구신호에 일치하도록 반복작업을 되풀이하였다. Full scale durability test in the laboratory is an essential of any fatigue life evaluation of components or structures of the automotive vehicle. Component testing is particularly important in today's highly competitive industries where the design to reduce weight and production costs must be balanced with the necessity to avoid expensive service failure. Generally, Hydraulic road simulator is used to carry out the fatigue test and the vibration test. In this paper, the algorithm and software to realize the real road profile are developed. The operation software for simultaneously controlled 3-axial simulator is developed and the input and output data are displayed window based PC controller in the real time. Futhermore, the software to generate the real road profile are developed. The validity of the software are verified by applying the belgian road, the city road the highway, and the gravel road. The results of the above experiment show that the real road profiles are realized well after 10th iteration. .

SM20C 旋削時 加工條件 變化에 따른 칩 形狀에 관한 硏究

정태상,황광성,김명규,김길진,박영태 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

This study was to look for cutting conditions which are safe, comfortable and contributable to the increase in productivity at the time in turning. The shape of chips while turning have a strong effect on cutting processing. If chips fail to be well controlled, systematic cutting is not possible by revolution of chips entangled with workpiece or damage of tool edges, and this causes problems threatening the safety of the operator. This study is designed to identify conditions which chips effectively controlled and able to treat properly, and the results are as follows: 1. Feed rate, which determined the shape of chips, was found to have a stronger impact on the shape of resulting chips than any other cutting condition. 2. When feed rate was 0.25mm or over, controlled chips(coil spring type) were produced under whatever cutting conditions. 3. When feed rate was 0.25mm or over and depth of cut was 1.0mm, well-controlled shorter coil type chips were produced at every spindle speed, which implied they were the most suitable cutting conditions. 4. Feed rate 0.2mm was found to be an unstable section where coil spring and linear mixed type chips were produced together, and as feed rate decreased, more linear chips beyond control were produced. 5. At the same spindle speed, as the diameter of the material became bigger, controlled chips were produced only when the depth of cut was reduced, and vice versa under feed rate 0.2mm. 6. At the same feed rate, the lower spindle speed was, the more stable chips were produced.

親核性 置換反應에서 最大速度現象과 Hammett 相關關係

성대동,이종팔,이미정,엄태섭 東亞大學校 大學院 1996 大學院論文集 Vol.21 No.-

The nucleophilic substitution reactions of p-substituted benyl bromide with p-substituted N,N-dimethyl anilines in methanol and acetonitrile binary solvent mixtures which are known as an isodielectric olvent system kinetically and the results are as follows. 1.The postive dharge is developed on the reaction center of the substrate and it means that the bond cleavage is preceded more than bond formation in the transition on the analogy of Hammett ?? values. 2.The bond formation is not progressed in the case of electron donating substituent of substrate. however, the bond formation is much developed in the case of electron withdrawing substituent of substrate on the anlogy of Hammett ?? values. 3.The nucleophilic attacking ability is shown a highest at 80%(V/V) methanol content and the bond formation is well progressed at the same methanol composition on the result of a cross interacton coefficient, ??.

R&D의 산업화와 지식집약형 기계산업 육성

성태현,정대철 경남대학교 경남지역문제연구원 2003 경남지역연구 Vol.8 No.-

시가지내 산악경관의 시점 높이별 조망 특성 : 청주시 우암산을 대상으로 In a Case of Mt. Uam

정정섭,권상준,조태동 한국환경과학회 2004 한국환경과학회지 Vol.13 No.6

In this research, we have performed a T-test to see how the relationship between dependent variable or visual point level and independent variable or visual quantity is in order to clear up the correlation between pattern of visual point and visual quantity by the constituents of a view from a different visual point level and the results are as follows: 1) In case of the character of Mt.Uam landscape of the city, Uamsan is set as a fixed point and about a direction of view(D), the north is a datum point from which the range of direction is distributed within 180˚westwardly and the visual range(R) is also within 2000m. An elevation is an average of 7.4˚and the average story of the buildings is 3.85. Here the height of a story is about 4m so the average of the visual point difference is estimated at 15.4m. 2) The type of visual point is divided into the intersection group and the front of the highly used public buildings group. Double intersection types account for about 78.8%(52 spots) which forms a majority part of LCP. 3) The analysis of the difference of visual point level divided by eye level and that of the top of the buildings has been proved that there's a sharp difference resulted from t-test at 1% significant level. The significant difference of elevation from height difference(15.93m), however, has not been shown. 4) From the result of T-test about visual quantity by the elements of a view from a different visual point level, the visual quantity of mountain(VQM), sky(VQS). ground(VQG) is significant at about 1% each and that of building(VQB) is at about 5%. The difference in visual quantity of a mountain by the visual point level is at about 4% which can meet a marginal level of LCP necessary for evaluation of mountainscape.

광중합 Glass lonomer Cement와 Amalgam의 결합강도에 관한 연구

정태성 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.2

소아치과 임상에서 자주 사용되는 3 종의 광중합형 GIC의 아밀감에 대한 접착능을 평가할 목적으로 60개의 아밀감 부착시편을 이용하여 중간결합제인 Scotchbond의 사용여부에 따른 경화된 아밀감에 대한 광중합 GIC의 전단결합강도를 측정하고 경계부의 파절양상을 관찰한 결과,다음과 같은 결론을 얻었다. 1.아밀감에 대한 광중합형 GIC의 전단강도는 Fuji Ⅱ LC,Vitremer,Vitrebond의 순으로 높게 나타났다.(P<0.05). 2.중간결합체인 Scotchbond를 사용하지 않은 경우에서 Scotchbond를 사용한 경우에 비해 전단결합강도가 높게 나타났다.(P<0.05). 3.결합파절면은 Scotchbond를 사용한 경우의 대부분에서 Scotchbond와 아밀감의 경계부에서 시편의 탈락이 나타났다.아밀감과 광중합 GIC의 결합을 시도할 경우에는 Scotchbond는 사용하지 않는 것이 바람직할 것으로 사료되었다. The purpose of this study was to asses the shear bond strengths of 3 types of light curing Glass Inomer cement to dental amalgam with or without an intermediary agent. 60 amalgam adherent specimens were prepared and aged in water at 37℃ for 3 days.Before bonding,the amalgam surfaces were finished flat on 600-grit silicon carbide paper.30 specimens among 60 were used for bonding in this condition,and the other 30 were covered with a thin layer of light-curing intermediary agent. Shear bond strengths were measured with universal machine (Instron,Model 43011) and statistically processed by ANOVA and t-test.On complition of bond test,the fracture surfaces were examined under light microscope so that the model of bond failure could be assessd. The results were as follows: 1.Bond strength of Fuji Ⅱ LC group showed the hightest value and was followed by Vitremer,Vitrebond groups(P<0.05). 2.The bond strengths achived without an intermediary agent were higher than those obtained with intermediary agent(P<0.05). 3.For the specimens bonded with intermediary agent,bond failures occured mostly as the agent-amalgam interface.So,the use of intermediary bonding agent was thought not recommendable at glass inomer-amalgam interface.

이중중합 수복재의 시간경과에 따른 중합도 변화

정태성,김신,양철호 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.3

심미적 수복 재료인 복합 레진과 글래스 아이오노머 시멘트는 중합방식에 따라 화학중합형, 광중합형, 그리고 이 두 가지 중합방식을 겸비한 이중중합형으로 분류할 수 있다. 화학중합형과 광중합형에 대해서는 지금까지 다수의 보고가 있었으나, 충전용 복합 레진의 경우 이들과 이중중합형을 비교한 예는 아직 찾기 힘든 실정이었으므로,이러한 관점에서의 연구가 필요할 것으로 사료되었다. 이 연구에서는 이중중합 수복재가 단일중합방식에 비해 어떠한 특성을 보이는지를 탐구하고자 하였다. 사용된 재료는 광중합형 복합 레진인 Veridonfil-Photo와 이중중합형인 Bis-core,이중중합형인 글래스 아이오노머 시멘트인 Fuji Ⅱ LC와 화합중합형인 Ketac-fil을 사용하였다. 가로 30mm,세로 30mm 높이 1mm와 3mm인 두 종류의 아크릴릭 몰드 중앙에 직경 7mm의 hole을 형성하여, 여기에 4종의 수복재를 충전하였다. 충전 직후부터 시작하여 24시간 경과시까지 일정 시간 간격으로 표면, 1mm,3mm깊이에서의 경도를 미세경도계(Shimadzu Micro Hardness Tester HMV-2000,Shimadzu Co.Japan)로 측정하였다. 측정치를 통계처리하여 얻은 결과는 다음과 같다. 1.4종의 수복재 모두에서,중합직후에 비해 24시간 경과후의 미세경도가 증가되었다. 2.중합 직후부터 24시간 경과후의 미세경도를 측정한 결과, Ketac-fil을 제외한 나머지 수복재에서는 각 깊이간 경도의 차이가 있었다. 3.각 수복재의 최종중합에 도달하는 시간을 조사한 결과, 이중중합형이 3mm의 깊이에서 광중합형이나 화중합형에 비해 중합이 더 오래 지속된 것으로 나타났다. 이상의 결과에서 조사광이 충분히 도달하지 못하여 중합이 현저히 떨어지는 수복재의 심부에도 이중중합방식을 사용할 경우에는 지속적인 중합반응이 일어나 중합도가 증가하는 것으로 나타났다. For the purpose of elucidating the polymerization modes of dual-cure restorative materials and comparing them with single-cure restorative materials,a study was performed on the light-cured composite resin,dual-cure composite resin,dual-cure glass innomer cement. By measuring the microhardness of each material at 0mm,1mm and 3mm depth during initial 24 hours with predetermined interval,the state of polymerization and degree of conversion was indirectly evaluated for each material,and obtained results are as follow: 1.All of four materials tested showed significant increase in microhardness after 24hrs compared with just after curing starts. 2.In all materials except Ketac-fil,there showed a significant difference in microhardness between each depth at each time interval. 3.In the test of lap time till final curing for each material,the polymerization process was revealed to last longer in the dual-cure type materials than in single-cure type materials at 3mm depth. Based on the results avobe,it was demonstrated with materials of dual-cure mode that the degree of conversion increase by successive curing reactions even in the deeper layers where sufficient curing light is impermeable.