• 한국축산식품학회지
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• 제38권1호
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• pp.162-171
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• 2018

The purpose of this study was to investigate the quality of duck ham formulated with duck skin through the pre-emulsification process. The experiments to investigate the quality characteristics of duck ham were carried out to measure proximate composition, cooking loss, emulsion stability, pH, color, texture profile analysis, apparent viscosity, and sensory characteristics. Duck ham was prepared with various ratios of duck skin in pre-emulsion as follows: Control (duct skin 30%), T1 (duck skin 20% + pre-emulsified duck skin 10%), T2 (duck skin 15% + pre-emulsified duck skin 15%), T3 (duck skin 10% + pre-emulsified duck skin 20%), and T4 (pre-emulsified duck skin 30%). As the ratio of duck skin to pre-emulsified skin changed, the quality of duck ham in terms of moisture content, fat content, cooking loss, emulsion stability, lightness, textural analysis, apparent viscosity, and overall acceptability changed. The moisture content of T2 was the highest (p<0.05) and that of the control and T4 was the lowest (p<0.05). The fat content of control was higher than all treatments (p<0.05). T2 had the lowest values in cooking loss, total expressible fluid, fat separation, hardness, springiness, and gumminess (p<0.05). The score of overall acceptability of all treatments with pre-emulsified skin was higher than control (p<0.05). Therefore, the pre-emulsification process can improve the quality characteristics of duck ham and 1:1 ratio of duck skin and pre-emulsified skin was the proper ratio to improve the quality characteristics of duck ham.

• Archives of Plastic Surgery
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• 제42권3호
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• pp.282-287
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• 2015

Background Morphological changes that accompany aging, such as wrinkles and skin laxity, are particularly prominent on facial skin. Recently, facial rejuvenation using the hydrofilling effect of hyaluronic acid (HA) filler has been employed for improvement of skin texture. In this study, we studied rejuvenating effects of stabilized HA (Restylane Vital) through direct intradermal injections. Methods A total of 30 female patients underwent a series of procedures on face, including three sessions at intervals of four weeks. A total of 2 mL of Restylane Vital was injected along the whole face using an automatic injector. Improvement of skin surface roughness, elasticity, brightness, moisture, and fine wrinkles was evaluated. Patient satisfaction was evaluated, and pictures of patients were taken at each visit and 6 months after last treatment session. Scoring for each patient was performed by three doctors according in five subjects. Moisture, oil and elasticity were measured before the procedure and before the last treatment in 10 patients. Results The majority of patients (77%) were satisfied with the therapeutic outcomes. Approximately 66% of patients responded that the effects of this procedure persisted for longer than four months, and the majority of patients (77%) wanted to undergo this procedure again and would recommend this procedure to acquaintances. Regarding doctors' evaluation, scores for improvement of skin surface roughness, elasticity, and brightness were significantly higher than those for improvement of moisture and fine wrinkle. Conclusions Intradermal injection of HA can have a rejuvenating effect on dry and tired facial skin, especially in improvement of skin surface roughness.

• 한국산학기술학회논문지
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• 제17권4호
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• pp.373-381
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• 2016

핸드크림이 국내 및 수입브랜드에 따른 소비자 구매인식과 피부 유, 수분량에 미치는 영향에 대해 알아보기 위하여 수도권 지역의 여성 105명을 대상으로 핸드크림에 대한 사용현황과 구매현황, 인시에 대한 설문조사를 진행하였다. 이후 시장 조사를 토대로 핸드크림의 가격과 용량, 전 성분을 비교하였고, 고가와 저가, 수입 브랜드와 국내 브랜드로 나누어 17명의 임상실험 대상자를 선정하여 2주 동안 핸드크림 사용 전과 사용 후 수분과 유분, 수분 지속력을 측정하여 분석하였다. 그 결과 핸드크림이 가격과 브랜드가 품질에 미치는 영향이 크다고 생각하는 사람의 비율이 높았으며, 고가와 저가, 수입브랜드와 국내브랜드의 가격을 분석한 결과 1mg (g)당 가격이 최대 4배정도 차이가 나는 것으로 조사되었다. 전 성분을 비교한 결과 보습제인 글리세린과 피부 컨디셔닝제인 세테아릴알코올을 공통적으로 함유하고 있음을 알 수 있었다. 임상실험 결과 제품 그룹별 유, 수분량의 변화는 유의하게 확인되었으나, 제품을 고가와 저가, 수입브랜드에 따른 수분과 유분량의 차이는 통계적으로 유의하지 않은 결과를 확인하였으며, 수분 지속력 역시 통계적으로 유의하지 않은 결과를 나타냈다. 이와 같은 결과는 가격과 브랜드의 차이가 피부의 유, 수분 함량에 미치는 영향과의 상관관계가 없음을 알 수 있었다. 따라서 하루에도 여러번씩 사용하는 소비성이 뛰어난 제품임을 감암할 때 소비자의 니즈를 파악하여 핸드크림에 대한 제품 품질 향상에 기여할 수 있는 기초 자료가 될 수 있으리라 사료된다.

• 대한기계학회논문집A
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• 제25권1호
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• pp.115-126
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• 2001

In this paper, through a series of comparative experiments, effects of two different cure processing methods, cocure and precure, on the mechanical properties of honeycomb core materials for aircraft applications are considered. Mass of moisture accumulated into the closed cells of the sandwich panel specimen from the measured mass of moisture diffused to the full saturation state into the elements(skin, adhesive layer, Nomex honeycomb), consisting the honeycomb sandwich specimen has been calculated. Water reservoir of 70$\^{C}$ was used to have specimens absorb moisture to see the influence of moisture absorbed into sandwich panel on its mechanical properties. For the repair condition holding for 2 hours at 177$\^{C}$(350℉) temperature, a pressure due to the vapor expansion in each cell of the sandwich panel, which may result in the local separation of the interface between laminated skin and the surface of the honeycomb, has been estimated by vapor pressure-temperature relation from the thermodynamic steam table and compared to the pressure from the ideal gas state equation. The bonding strengths of the laminated skins on the flat surface of the Nomex honeycomb have been compared by the flatwise tension test and climbing drum peel test performed at room temperature for dry, wet and wet-repair specimens, respectively.

• 대한화장품학회지
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• 제15권1호
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• pp.63-70
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• 1989

• 대한화장품학회지
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• 제31권3호
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• pp.279-283
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• 2005

일부 도시 중년여성을 대상으로 안면부위별 피부상태를 파악하고자 비침습적 측정방법을 이용하여 유 수분, 멜라닌 홍반 정도를 관찰하였고, 주관적으로 자각하는 유 수분 유형을 조사하여 객관적 측정값들과의 관련성을 보고자 하였다. 안면부위별 측정 결과, 수분량은 눈가>이마>볼, 유분량은 이마>눈가>볼 부위 순이었으며, 홍반지수는 이마>볼>눈가, 멜라닌지수는 눈가>이마>볼 부위 순이었다. 객관적 유분 측정값과 주관적으로 자각하는 유분유형은 일치성을 나타내었다. 유분량 홍반지수, 멜라닌지수의 각 측정값들은 유의한 양의 상관관계를 보였다.

• 대한화장품학회지
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• 제27권1호
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• pp.83-98
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• 2001

Inositol, is a water-soluble crystalline compound. It helps with people’s metabolism and decreases cholesterol levels. It is also known to have anti-cancer results. In order to find out the affects of Inositol on the skin, Inositol skin lotion was produced with each amount of Inisitol: 0, 0.5, 1.0, 2.0, 3.0 wt% and tested on the faces and the arm areas of women in all ages for 7 weeks. The moisture, sebum, change in elasticity, and improvement of wrinkles were measured. Corneometer, Sebumeter, Cutometer, and an image analyzer were used as measuring equipments. There are subtle differences in the subjects when 1-2% of Inositol is used the moisture of the skin improved 19%, elasticity by 17%, and the amount of sebum for dry and oily skin types adjusted to the amount of sebum of the neutral skin types. This influenced the length, width, the number of peak, and the height of the wrinkles to improve 12.4%. It is thought that Inositol would be an effective new raw material in cosmetics.

• 예술인문사회 융합 멀티미디어 논문지
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• 제7권10호
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• pp.703-711
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• 2017

Today, men's appearance is an important part of the global fashion industry, including Korea, with such fashion concepts as the Metrosexual and Ubersexual. Domestic and overseas beauty and cosmetics related organizations are using this phenomenon for marketing and researching to improve the function of cosmetics. The purpose of this study was to investigate the effect of Prunus persica L. Batsch leaf extract on the skin condition after clinical application to male subjects with oily skin to determine the possibility of functional cosmetics utilizing this extract. The cleansing bars were prepared by the MP method and the cleansing packs were prepared using natural ingredients. After 8 weeks of application, moisture, oil, erythema, melanin, pH, elasticity and tactile sensation were measured using MPA5. The results showed that there was a statistically significant difference in T-zone moisture and T-zone oil after using the natural cleansing bar, but there was no significant difference between the two groups for other items. However, the statistically significant changes were found in the individual skin condition change items of the subjects in each group, and it was judged that the two kinds of formulations could be used at the same time to have a higher skin improvement effect. Thus, Prunus persica L. Batsch leaf extract demonstrates potential to be used as a functional cosmetics item.

• 대한화장품학회지
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• 제38권3호
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• pp.197-200
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• 2012

보습제 베이스를 립스틱에 사용하여 보습효과가 우수한 제품개발에 응용하고자 DSC에 의한 결합수형성능, 수분보유능을 고찰하였다. 보습제 베이스를 배제한 견본에서 결합수 형성능은 5.12 %임을 알았다. 보습제 베이스함량에 따른 결합수형성능을 측정한 결과 보습제 베이스 함량이 증가함에 따라 결합수 형성능이 비례적으로 증가함을 DSC측정결과 알았다. 한편 DSC측정결과와 in vitro 수분보유능 측정법을 비교 실험한 결과 유사한 경향을 나타냄을 알 수 있었다. 따라서 DSC에 의한 결합수 형성능 측정법은 앞으로 립스틱 제품의 보습효과를 예측 하는데 유용한 방법으로 생각되었다.

• 한국식품과학회지
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• 제27권4호
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• pp.571-575
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• 1995

피부조직 콜라겐의 열안정성에 대한 기초자료를 얻고자 DSC를 이용하여 Tm(transition temperature)와 ${\Delta}H(enthalpy)$를 측정하였다. 수화시간과 수화율에 따른 불용성 콜라겐의 DSC 특성은 수화시간에 비하여 수화율이 콜라겐 구조안정성에 미치는 영향이 큰 것으로 나타났으며, 수화율이 증가할수록 Tm은 낮아지고 ${\Delta}H$는 증가하였다. 주령 및 성별에 따른 acetone dried skin의 Tm 및 ΔH는 암컷의 경우보다 수컷의 경우가 다소 높았으며, 주령이 증가할수록 Tm과 ${\Delta}H$가 서서히 증가하고 있어 열안정성은 나이와 관계가 있음을 보여주었다. Acetone dried skin의 경우와는 달리 염가용성 콜라겐의 DSC 특성값은 암컷의 경우가 수컷의 경우보다 다소 높았으며, 암컷의 Tm과 ${\Delta}H$는 주령의 증가에 따라 유의적으로 감소하는 경향을 보였다. 이러한 결과는 피부조직내에서의 콜라겐 구조는 성별 또는 주령에 따라 달리 변화되고 있음을 간접적으로 시사한 것으로 생각되었다.