국내 주요 콩 품종의 토코페롤 함량 및 항산화 활성

손유림,김율호,박향미,이춘기,김미정,이석기,이상철,이유영 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07

토코페롤은 비타민 E를 대표하는 지용성 항산화물질로 인체에서 세포막을 구성하는 불포화지방산의 산화를 저해하며, 콜레스테롤 예방, 염증 경감, 노화 지연 등 인간의 건강에 매우 중요한 역할을 하고 있다. 따라서 국내에서 재배되고 있는 콩 28품종을 대상으로 종실과 발아상태에서 토코페롤함량을 분석하였다. 종실상태에서 총 토코페롤함량은 한아가리콩(503.1±1.1㎍/g)이 가장 많았으며, 서리태(475.5±2.4), 서목태(476.5±3), 오리알태(486.6±7.5)순으로 높았다. 발아 콩에서는 충북백(219.4±16.7), 장수콩(230.1±37.5)의 토코페롤 함량이 많았으며, 신팔달2호(20.1±0.6)와 풍산나물콩은(29.8±3.2)은 타 품종에 비해 적은 함량을 보였다. 품종 간 산화저해활성을 측정하기 위해 lipid peroxidation(Malondialdehyde, MDA) 함량, DPPH(2,2-Diphenyl-1-picrylhydrazy), ABTs(2,2’-Azino-bis(3-ethylbenzothiazolin-6-sulfonic acid)diammonium salt) 활성을 측정하였다. MDA함량은 종실상태에서 서목태(47.0±9.7 nM/mg)와 오리알태(60.8±7.5)의 함량이 낮았고, 발아 콩에서는 진품콩2호(34.8±4.4), 광교(41.5±0.6), 서목태(43.6±9.7) 순으로 낮아 이들 품종에서 항산화능이 높은 것으로 나타났다. 반면 DPPH, ABTs를 통한 항산화 활성 측정시 충북백과 장단백묵의 활성이 높았으며, 토코페롤 함량과 Lipid peroxidation 저해활성과는 유의한 상관관계를 보였다.

LABVIEW를 활용한 자동화 크레인 설계

정유영(Y. Jeong),이상오(S. Lee),정윤수(Y. Jeong),손유빈(Y. Son),최나연(N. Choi),그레이스(G. Lukman),안진우(J. Ahn) 대한전기학회 2016 대한전기학회 학술대회 논문집 Vol.2016 No.3

전처리에 따른 귀리 페이스트의 이화학적 특성 및 항산화 활성 변화

손유림(Yurim Son),강문석(Moon Seok Kang),김현주(Hyun-Joo Kim),김미향(Mihyang Kim),이진영(Jin Young Lee),한나래(NaRae Han),이유영(Yu Young Lee) 한국식품과학회 2022 한국식품과학회지 Vol.54 No.5

본 연구는 귀리 원료곡을 전처리 후 제조된 페이스트의 이화학적 특성, 기능성 성분, 항산화 활성에 미치는 영향을 분석하고자 하였다. 귀리 원료곡에 증숙(1.5 h 호화), 볶음(200℃, 30 min), 발아(10℃, 24 h) 처리 후 페이스트를 제조하여 볶음 귀리 페이스트(ROP), 증숙 귀리 페이스트(SOP), 발아 귀리 페이스트(GOP)를 제조하였으며, 처리하지 않은 원료곡으로 제조한 페이스트(COP)를 대조군으로 사용하였다. 총 고형분 함량은 58.4% (SOP)-61.0% (GOP)였으며, 점도는 전처리군 페이스트에서 모두 COP (16,240cP) 대비 감소하였으며, 특히 SOP의 점도는 1,640 cP로 가장 크게 감소하였다. 유리당 함량은 전처리 간 차이를 보이지 않았으나, 쌀귀리 원곡의 유리당 함량(2.55%) 보다 약 9.2배 증가하였고, 95% 이상이 glucose (22.58-22.98 g/100 g paste)였다. 총 Avn 함량은 ROP가 83.6 μg/g dw으로 가장 많았고, COP 대비 1.7배 증가하였다. 전처리된 페이스트는 COP 대비 항산화 활성(DPPH와 ABTS radical 소거활성), 총 페놀함량, 총 플라보노이드 함량이 증가하였다. 특히 DPPH radical 소거활성에서 ROP는 38.27mg TEAC/100 g로 COP에 비해 2배 이상의 높은 항산화 활성을 나타내었으며, 총 플라보노이드 함량도 ROP가 7.26 mg CE/100g로 가장 많았다. 페이스트의 항산화 성분과 활성이 귀리 분말대비 증가비율을 분석하였을 때 ROP에서 항산화 활성 증가비율이 가장 높고, 기능성 성분인 Avn 함량이 유지되는 것으로 나타나 식품 소재로서 활용성이 높을 것으로 기대된다. The purpose of this study was to investigate physicochemical properties and antioxidant activity of pastes prepared from oat grains pretreated by various methods. Oat pastes designated as ROP, SOP, GOP and COP were made from roasted, steamed, and germinated oat grains as well as untreated grains as the control. The total solid contents of pastes ranged from 58.4% of SOP to 61.0% of GOP. Viscosities of ROP, SOP and GOP were lower than that of COP, but free sugar content of those was 9.2 times higher than that of COP. Avenanthramide content of ROP (83.6 μg/g) was highest and 1.7 times greater than COP. The pastes of pretreated grains showed an increase in antioxidant activities and functional components as compared to COP. Since ROP had the highest rate of increase in antioxidant activities and its avenanthramide contents remained high, ROP was expected to be highly applicable as food materials.

경부 탄력섬유성 위황색종의 치험례: 외과적 절제술과 레이저 박피의 효과

유영천,유석근,손유리,이정재,조주원 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.4

Pseudoxanthoma elasticum(PXE) is an uncommon heritable disorder of elastin characterized by cutaneous, ocular and vascular abnormalities. Typical skin lesion shows yellowish papules and redundant skin folds on the neck, axilla and groin due to degeneration and calcification of elastic fibers in deep dermis. As in all heritable disorders of connective tissue, no curative therapy is presently know. Redundant and unsightly skin folds about the neck can be improved by surgery, but irregular papular lesion on skin does not improved by surgery. A-44-year-old female who had a skin lesion and angioid streak was treated as follows: Skin folds on the neck were excised successfully without any significant problem such as intraoperative bleeding, wound dehiscence or hypertrophic scar formation. To evaluate whether we could smooth the irregular skin surface due to multiple papules, laserbrasion with a SLT contack Nd:YAG laser?? system was performed experimentally on a limited area which was located on the right supracla-vicular area about 2×3㎝ in size. An acceptable aesthetic appearance was achieved with surgical excision 12 months after the operation. Biopsy of the laserbrasion site revealed disappearance of the calcium deposit. This study emphasizes the possibility of using laserbrasion in solving troblesome skin lesion of the PXE.

새싹 귀리 온도 및 생육 일수에 따른 기능성분 및 항산화 활성 변화

이유영(Yu-Young Lee),손유림(Yurim Son),강문석(Moon Seok Kang),김미향(Mihyang Kim),이진영(Jin Young Lee),김현주(Hyun-Joo Kim) 한국식품영양과학회 2021 한국식품영양과학회지 Vol.50 No.11

본 연구에서는 새싹 귀리를 식품산업에서 다양하게 활용하기 위한 기초자료를 확보하기 위해 새싹 부위에 따른 기능성분 및 항산화 활성을 분석하였다. 귀리 잎은 온도가 높아질수록 빨리 성장하였고, 잎 내 avenanthramide 함량은 7일차에 비해 13일차에 급격하게 감소하였다. 7일차 새싹 귀리의 부위별 avenanthramides 함량을 분석한 결과, 잎(37.25~113.67 ㎍/g)보다 뿌리(48.48~155.59 ㎍/g) 및 종자(538.68~746.29 ㎍/g)에 avenanthramides 함량이 높았다. 베타글루칸 함량의 경우 잎과 뿌리는 15℃에서(잎, 2.41±0.12 g/100 g; 뿌리, 1.40±0.05 g/100 g), 종자는 24℃에서(1.24±0.06 g/100 g) 높은 함량을 보였다. 새싹 부위에 따른 DPPH 라디칼 소거능을 분석한 결과 잎은 24℃에서 185.40±3.40 ㎎ TEAC/100 g으로 높은 반면, 뿌리에서는 18℃(153.60±0.00 ㎎ TEAC/100 g), 종자에서는 24℃(203.00±1.70 ㎎ TEAC/100 g)에서 가장 높았다. ABTS 라디칼 소거능의 경우 잎에서는 18℃(472.30±6.70 ㎎ TEAC/100 g)에서 가장 높았으며, 뿌리와 종자는 DPPH 라디칼 소거능과 동일한 온도에서 가장 높은 활성을 보였다. 새싹 부위에 따른 총 폴리페놀 함량 분석 결과 잎과 뿌리에서는 18℃에서 각각 634.90±17.50 ㎎ GAE/100 g, 386.80±0.00 ㎎ GAE/100 g으로 가장 높았으며, 종자는 24℃에서 434.70±9.90 ㎎ GAE/100 g으로 함량이 가장 높았다. 결론적으로 새싹 귀리는 재배조건에 따라 기능성분 함량이 상이하여 소재 활용 목적에 따라 귀리 새싹의 적정 재배조건 확립이 필요하다고 생각되며, 새싹 재배조건에 따른 기능성분 및 항산화 활성 변화에 대한 기작 구명을 위해 후속 연구가 필요하다고 판단된다. In this study, the functional components and antioxidant activities of the various parts of sprouted oats were analyzed to obtain basic data for their varied end-uses in the food industry. The avenanthramide content of the sprouted oats was higher in the roots (48.48∼155.59 ㎍/g) and seeds (538.68∼746.29 ㎍/g) than in the sprouts (37.25∼113.67 ㎍/g). The β-glucan content was high in sprouts and roots at 15℃ (sprouts, 2.41±0.12 g/100 g; roots, 1.40±0.05 g/100 g) and seeds at 24℃ (1.24±0.06 g/100 g). The 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of the sprout was highest at 185.4±3.4 ㎎ Trolox equivalent antioxidant capacity (TEAC)/100 g at 24℃, while that of the root was highest at 18℃ (153.60±0.00 ㎎ TEAC/100 g) and the seed at 24℃ (203.00±1.70 ㎎ TEAC/100 6.70 ㎎ TEAC/100 g) in the sprout. The total polyphenol content in the sprout was highest at 18℃ (634.90±17.50 ㎎ gallic acid equivalent/100 g). Based on the above results, the functional component content of sprouted oats differs depending on the cultivation conditions. Thus, it is necessary to establish appropriate cultivation conditions for oat sprouts according to the end-use.

노화가속화 조건에서 저장 기간에 따른 귀리의 기능성 성분 및 항산화 활성 변화

손유림,이지혜,박형호,이병원,김현주,한상익,우관식,이병규,이상철,이유영,Son, Yu Rim,Lee, Ji Hae,Park, Hyoung-Ho,Lee, Byong Won,Kim, Hyun-Joo,Han, Sang-Ik,Woo, Koan Sik,Lee, Byoung-kyu,Lee, Sang-Chul,Lee, Yu Young 한국작물학회 2018 한국작물학회지 Vol.63 No.2

In this study, we investigated the changes in physicochemical properties, antioxidant activities, and contents of functional compounds, such as avenanthramides (AVNs), vitamin E, and ${\beta}$-glucan, in oats by accelerated age-conditioning (temperature: $45^{\circ}C$, relative humidity: 20%). No significant differences were observed in crude protein, crude fat, and AVNs contents of three oat cultivars, up to 63 days of storage; however, their antioxidant activities, as well as ${\beta}$-glucan, vitamin E, and fatty acid contents were significantly different (p < 0.05). ${\beta}$-glucan and fatty acid contents and the antioxidant activities of Deayang (DY) cultivar did not change during storage. ${\beta}$-glucan and unsaturated fatty acid contents of Choyang (CY) and Jopung (JP) increased during the storage period, while antioxidant activities did not (DPPH-CY; 48.1 to 26.9 mg TEAC/100 g, JP; 49.4 to 26.7 mg TEAC/100 g. ABTS-CY; 88.4 to 56.3 mg TEAC/100 g, JP; 80.0 to 55.8 mg TEAC/100 g). The total vitamin E content in DY (1.20 to 0.85 mg/100 g) and CY (1.73 to 1.33 mg/100 g) decreased, but it was maintained in JP. This study indicated that the changes in physicochemical properties and functional compounds of oat grains during storage depends on the cultivars. The result showed that DY, which has the highest AVNs content, has more stable functional compounds and antioxidant activities during storage. These results can serve as essential data for post-harvest management and development of functional food materials for extending the use of oats.

우리 나라 이동통신서비스의 마케팅 전략에 관한 연구

유영중,손원상 상명대학교 산업과학연구소 2000 産業科學硏究 Vol.- No.9

A Study on the Causal Effects of Childbirth on Maternal Labor Supply in Korea

박철성,손유영 한국경제학회 2023 The Korean Economic Review Vol.39 No.1

We estimate the causal effect of additional childbirth on mothers’ probability of working by using the two-stage least squares estimation method. Samples of mothers drawn from the 10%–20% Restricted Access Samples of the 2000, 2005, 2010, and 2015 Censuses are used. We use children’s gender composition as the instrumental variable for childbirth. We find that additional childbirth had significantly adverse effects on mothers’ probability to work up to 2010, but it is no longer likely to be the case. The ordinary least squares estimates still show a strong negative correlation between childbirth and maternal labor supply, which, our results indicate, is driven mainly by endogenous self-selection. We find that the labor supply of less-educated mothers is more adversely affected by childbirths.

콩 품종별 품질특성과 전두유 식미의 상관관계

이지혜,이유영,손유림,염경진,이윤미,이병원,우관식,김현주,한상익,이병규 한국작물학회 2018 한국작물학회지 Vol.63 No.4

The correlation between the nutritional composition of soybeans and whole soymilk palatability was investigated using nine soybean cultivars (Teagwangkong, Daewonkong, Saedanback, Jinpung, Daechan, Miso, Cheongmiin, Cheongja 3, and Socheongja). Physicochemical analysis of soybeans, showed that the protein and lipid contents were 37.7-46.0 and 15.2-20.9%, respectively. Unsaturated fatty acids were 81.1-84.8% of total fatty acids, of which linoleic acids was 49.7-56.8%. Total tocopherol was 243.5-361.3 μg/g of extract, of which γ-tocopherol was 67.14-86.49 μg/g. Total isoflavone contents varied within cultivars from 495.4-1,443.8 μg/g of extract. Daidzin and genistin were 252.1-556.0 and 241.8-730.7 μg/g, respectively, which were major isoflavones in soybeans. For the sensory evaluation, whole soymilk was made from nine soybean cultivars and 20 panels investigate its palatability. The Daechan cultivar had the highest (9.1), and Cheongmiin the lowest (5.6), overall palatability score. Interestingly, sensory results were strongly correlated with linoleic acid (0.746) and stearic acid (-0.716) content. In summary, the fatty acid composition of soybeans is the key factor in determining the palatability of whole soymilk. This study could be applied to determine the suitability of cultivars for soybean products, including whole soymilk. 국내산 콩 9 품종(태광콩, 대원콩, 새단백, 진풍, 대찬, 미소, 청미인, 청자3호, 소청자)의 조단백, 조지방, 회분, 토코페롤, 지방산, 이소플라본 함량을 분석하였다. 국내산 9품종의 콩 단백질 함량은 37.7~46.0%이었으며, 지질함량은15.2~20.9%이었다. 총 토코페롤의 함량은 243.5~361.3 μg/g 으로, γ-토코페롤이 총 토코페롤의 67.14~86.49%을 차지하였다. 지방산 조성분석 결과에서는 리놀레산(C18:2)이 49.7~ 56.8%로 가장 높은 비율을 나타내었다. 이소플라본 분석에서는 다이드진이 252.1~556.0 μg/g, 제니스틴이 241.8~730.7 μg/g으로 분석되었다. 식미검정 결과에서는 대찬콩이 9.1 로 가장 높은 기호도를 보였으며, 청미인이 7.4로 가장 낮은 기호도를 나타냈다. 상관성 분석결과 전두유의 기호도는 콩 품종의 지방산조성과 가장 높은 상관계수(correlation coefficient)를 나타냈으며, 리놀렌산 함량이 높을수록(0.746), 스테아르산 함량이 낮을수록(-0.716) 두유의 기호도가 증가하는 경향을 나타냈다. 이상의 연구결과는 전두유 제조에있어 품종별 특성을 고려하여 적합 품종을 선택하는 기초자료로 활용될 수 있을 것으로 생각된다.

기관절개술 반흔의 교정

유석근,손유리,유영천,김창욱,이정재 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.5

The tracheostomy is increasingly being performed. In most cases, the tracheostomy sites are left to heal by secondary intention, so it leaves a depressed and wide scar that is cosmetically disfigured. Another problem os that the scar is also attached directly to the trachea itself and will move vertically with the trachea during the act of swallowing. Even though the tracheostomy scar is cosmetically acceptable, the mobility and retraction of the scar is a continual nuisance to the patient. We performed a retrospective study on 9 patients who had undergone revision of the depressed thracheostomy scar by the Renner Method from June, 1997 to February, 1999. The method includes transverse fusiform incision of the original scar and excision of the depressed portion of the scar to the level of the trachea itself. To prevent attachment of the skin and trachea, a bilateral subcutaneous flap and muscle flap were simply advanced to the midline and overlapped. Then the rest of scar that was not depressed was deepithelized and flipped to augment the soft tissue volume in the central depressed area. Satisfactory results were achieved in all patients without hematoma, infection, hypertrophic scar, and keloid formation. We believe this simple Renner method is one of the best ways of performing posttracheostomy scar revision.