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박순기,이범선,최진호,김월수,정순주 전남대학교 농업과학기술연구소 2000 農業科學技術硏究 Vol.35 No.-
The fruit qualities and sugar contents of hydroponically grown watermelon cultivars were investigated in order to obtain informations for nutriculture of watermelon in glass house. The fruit circumference of Mudeungsan watermelon was increased from 30 to 38 days after pollination, and periods of fruit development was longer than that of other cultivars. Total soluble solid content in fruit flesh of watermelon was high in Samboggool, Gwigongja, Dalgona, Gamro, Mudeungsan, Olimpia, Hwangto and Geumro in order. Maltose content was higher in Gwigongja and Mudeungsan watermelon cultivar Sucrose content was higher in Samboggool, Gwigongja and Dalgona watermelon cultivar than that of other watermelon cultivars. Glucose content was much higher in Mudeungsan watermelon cultivar while very lower in Samboggool, Gwigongja and Dalgona watermelon cultivar than that of other watermelon cultivars. Fructose content was higher in Hwangto, Gamro, and Mudeungsan watermelon cultivar while was lower in Gwigongja watermelon cultivar than that of other watermelon cultivars. Maltose, glucose, and fructose content in fruit fresh of watermelon was higher in Mudeungsan watermelon than that of other watermelon cultivars. Contents of maltose, fructose and glucose in fruit flesh of watermelon were higher in Mudeungsan watermelon than those of other cultivars.
( Wool Suh ),( Jung Min Lee ),( Chang Won Kee ) 대한안과학회 2014 Korean Journal of Ophthalmology Vol.28 No.4
Purpose: To evaluate the relationship between the structural damage as assessed by time-domain optical coherence tomography (OCT) and functional changes in glaucoma. Methods: In total, 190 patients with normal tension glaucoma or primary open angle glaucoma were included in this study. The thickness of retinal nerve fiber layer (RNFL) around the optic disc and the area of RNFL defect were determined using OCT scans. The relationships between the RNFL thickness or area of the defect and visual field (VF) indices were assessed using the Lowess function, regression analysis and partial Spearman correlation. The differences between these associations depending on the stage of VF damage were further analyzed. Age, optic disc size, refraction, central corneal thickness and the presence of systemic disease were corrected for in order to exclude confounding factors. Results: A logarithmic scale of RNFL thickness showed a negative linear relationship with VF indices. The area of the RNFL defect showed a weak correlation with the pattern of standard deviation, whereas the remnant RNFL thickness was moderately correlated with the pattern of standard deviation (partial Spearman correlation coefficient, 0.39, -0.47, respectively; p < 0.0001). Many outliers were detected in the Lowess-plotted graphs. Multiplication of the area and the inverted RNFL thickness showed a moderately correlated logarithmic relationship with the VF indices (partial Spearman correlation coefficient, 0.46; 95% confidence interval, 0.34 to 0.57; p < 0.0001). In the severe stage of VF damage, correlation between the area of the RNFL defect and mean deviation was significantly greater than in other stages (partial Spearman correlation coefficient, -0.66; p = 0.02). Conclusions: The thickness of the RNFL had a negative logarithmic correlation with the VF indices and was more relevant to the VF indices than the area of the RNFL defect, as measured by OCT.
Practical Views on the Selection Criteria for Athlete Endorsement
Wool-Yeul Baek 남서울대학교 2011 남서울대학교 논문집 Vol.17 No.2
The purpose of the current study was to identify those crucial factors used by Korean marketers as well as advertising practitioners to select athlete celebrity endorsers. In order to accomplish the research objectives, five advertising practitioners who had present or past experiences with both celebrity and athlete endorsement campaigns, using judgemental and snowball sampling methods. Semi-structured depth interviews were performed. The interview transcripts were analyzed by using a content analysis. The study has proven that adversing practitioners well acknowledge that athlete celebrity endorsement to be valuable as well as successful marketing message carrier even though there is potential risks including negative publicity and multiple endorsements, As consumers perceive positive images of athlete endorsers through their attractiveness and credibility, the positive attitudes toward the athlete endorsers can be transferred to the promoted product, and, in turn, induce consumption behavior. It is also found that the practitioners considered the cost of hiring the athlete celebrity followed by the reputation, celebrity-product match-up, celebrity-target audience match-up, attractiveness, credibility and multiple endorsements in an orderly manner. It is speculated that the findings reflects the fact that Korean athlete celebrity endorsement industry is relatively small compared to that of western countries.
Yeo Wool Kang,Nami Joo 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Mesembryanthemum crystallinum L., commonly known as ice plant, has Bladder cells that resemble ice crystals on stem and leaves. Anti-inflammatory activity was evaluated with ethanol extracts from three parts of the plant–the stem, larger leaves, and smaller leaves. The cytotoxicity assay utilizing Raw 264.7 macrophages showed that larger leaves did not show cytotoxicity activity up until 500 ppm concentration, while stem and small leaves up to 300 ppm respectively. In the experiment confirming the amount of Nitric Oxide with macrophages treated with LPS, each part of the ice plant showed a concentration-dependent decrease in NO production (p<0.001). The production of TNFα, IL-1 β, and IL-6 increased in RAW264.7 cells due to LPS, an inflammatory cytokine, but was concentration-dependently inhibited by the treatment of ice plant extracts(500 μg/mL for the larger leaves, 300 μg/mL for the stem and the smaller leaves)(p<0.001). These results suggest that ice plant possesses anti-inflammatory activity on LPS-stimulated macrophages by regulating the production of cytokine.
매실 식초 분말의 항산화 및 유방암 세포주 증식 억제 효과
박울림(Wool-Lim Park),김정호(Jeong-Ho Kim),허지안(Ji-An Heo),원영선(Yeong-Seon Won),서권일(Kwon-Il Seo) 한국생명과학회 2021 생명과학회지 Vol.31 No.2
매실은 주로 한국, 일본, 중국 같은 동아시아에 분포하고, 매실 나무의 열매는 한약재나 식재료로 쓰여왔다. 그러나 매실 열매를 이용한 이전의 연구는 대부분 추출물 형태로 진행하였기에, 많은 식품학적인 활용을 위해 매실열매의 다양한 가공형태에서의 연구가 필요한 실정이다. 본 연구에선 분무 건조한 매실 식초 분말(SPP)의 이화학적 특성과 생리활성을 평가하였다. SPP의 이화학적 특성에서 당도, pH, 총산도 및 수분 함량은 각각 8.90 °Brix, 3.19, 1.05% 및 3.07%로 확인되었다. SPP의 항산화 활성은 DPPH 라디칼 소거활성, 환원력 및 H₂O₂ 소거활성에서 각각 65.55%, 1.48 및 48.07%로 양성 대조군과 비슷하거나 다소 낮게 유의적으로 높은 항산화 활성을 나타냈다. 또한 SPP를 농도별로 처리함에 따라 MDA-MB-231 인체 유방암 세포에서 유의적인 세포 증식 억제 활성을 보였다. 형태학적 연구에서 MDA-MB-231 세포에서 농도의존적으로 세포의 형태학적 변화가 확인되었고, apoptotic body와 핵의 응축을 나타냈다. 총 폴리페놀 및 플라보노이드 함량은 59.58 ㎍/g과 57.56 ㎍/g으로 확인되었다. 이러한 연구 결과를 통해 분무 건조한 매실 식초 분말은 항산화 및 암세포 증식억제능이 있는 기능성 식품 및 천연 의약품 소재로 활용이 가능할 것으로 생각된다. Prunus mume Sieb. et Zucc is widely distributed in East Asia (Korea, Japan, and China), and its fruit is often used as a medication and food material. However, because most previous studies have only investigated the state of Prunus mume fruit extract, studies on the various ways of processing this extract are still needed to increase its utilization. In this study, we evaluated the physicochemical properties and physiological activities of spray-dried Prunus mume vinegar powder (SPP). The sugar content, pH, total acidity, and moisture content of the SPP were 8.90 °Brix, 3.19, 1.05%, and 3.07%, respectively. The SPP exhibited significantly high antioxidant activity in terms of DPPH radical scavenging activity (65.55%), reducing power (1.48), and hydrogen peroxide scavenging activity (48.07%). In addition, the SPP remarkably decreased the cell viability of human breast MDA-MB-231 and human skin cancer SK-MEL-28 in a dose-dependent manner. The morphological results of the treatment of MDA-MB-231 cells with SPP were distorted, shrunken cell masses. Furthermore, apoptotic bodies and nuclear condensation formed in the SPP-treated MDA-MB-231 cells. The total polyphenol and flavonoid contents of the SPP were 59.58 ㎍/g (gallic acid equivalent) and 57.56 ㎍/g (quercetin equivalent). The results of this study indicate that SPP, which has antioxidant activity and anticancer effects, can be useful in the development of natural medicines and functional food ingredients.