• 융합정보논문지
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• 제9권12호
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• pp.286-293
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• 2019

본 연구에서는 식약청 고시 원료인 레티놀, 레티닐팔미테이트, 아데노신, 폴리에톡실레이티드레틴아마이드 4종류와 항 노화의 효능을 가진 천연 원료인 금송, 하고초, 맨드라미, 브라질린, 여뀌, 황기, 연교, 자근, 대황, 육종용에 대한 연구 동향을 살펴보았다. 현재까지의 항 노화 연구는 주로 콜라겐 생성과 엘라스타아제 합성 억제 기전을 중심으로 이루어지고 있는 것이 확인되었다. 하지만, 피부의 노화 과정은 여러 가지 원인에 의해서 발생하는 것으로 볼 때, 다양한 기전에 맞춰 피부 항노화에 도움을 줄 수 있는 안전하고 효과적인 천연 원료를 활용한 항노화 연구가 지속적으로 이루어져야할 것으로 사료되어 진다.

• 한국정보통신학회논문지
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• 제25권2호
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• pp.221-227
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• 2021

최근 발광다이오드를 이용한 마스크 형식의 피부 관리기에 관한 관심이 증가하고 있으며, 특정 파장의 광학적 자극은 노출 광량 및 파장대, 광선 조사 시간을 조절함으로써, 피부 미백, 여드름 치료, 탄력 및 주름 개선 등과 같은 다양한 효과를 보인다고 알려져 왔다. 특히, 피부 노화 억제, 세포증식 유도, 피부의 염증 완화 등을 목적으로 하는 마스크의 경우 각각 다른 파장의 광원이 사용된다. 본 논문에서는 마이크로컨트롤러를 사용하여 피부재생 마스크에 활발하게 사용되는 발광다이오드 제어시스템을 개발하였다. 단일 또는 복합적으로 피부 섬유아세포에 인가하여, 세포의 증식에 어떠한 효과가 있는지 확인한다. 또한, 세포증식률에 긍정적 효과를 보이는 특정 파장대를 찾아 다양한 자극에 기인한 세포증식 효과를 확인하고, 영상처리를 활용한 정량분석법을 제시하여 그 효과를 평가하였다.

• Archives of Plastic Surgery
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• 제49권3호
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• pp.296-303
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• 2022

Background In recent years thread lift has become widespread; however, existing methods need to improve their long-term outcome, which requires considering topographic anatomy of face and neck, especially the ligamentous apparatus. This study aims to assess the effectiveness and safety of an innovative method of one-time three-step thread facelift, which provides an additional support to the ligamentous structures of the upper, middle, and lower thirds of the face and neck. Methods The study included 357 patients aged 32 to 67 years with various morphotypes of aging. The original method of thread lift was applied, and its effectiveness was followed up for to 2 years. The Wrinkle Severity Rating Score (WSRS) and Global Aesthetic Improvement Scale (GAIS) scores were used for assessment by investigators, independent observers, and patients. Statistical significance was determined using paired t-test and chi-square test. Results The mean WSRS score was 3.88 ± 0.88 before the thread lift, 1.93 ± 0.81 one month after the procedure, and 2.36 ± 0.85 after 2 years of follow-up. The mean GAIS was 4.80 ± 0.04 one month after thread lift, and 4.01 ± 0.04 after 2 years, while in the patients' assessment Global Satisfaction Scale was 4.86 ± 0.02 and 4.10 ± 0.02, respectively. There were no clinically significant complications throughout the observation period. Conclusion The new method of one-time three-step thread fixation of the soft tissues of the face and neck demonstrated a high degree of satisfaction by both experts and patients after 2 years of follow-up. It showed high efficacy and safety, including in the group of patients with pronounced age-related changes of the skin of face and neck.

• 한국해양바이오학회지
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• 제14권1호
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• pp.9-24
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• 2022

Low-molecular weight peptides derived from fish collagen exhibit several bioactivities, including antioxidant, antiwrinkle, antimicrobial, antidiabetic, and antihypertension effects. These peptides are also involved in triglyceride suppression and memory improvement. This study aimed to investigate the optimal processing condition for preparing low-molecular weight peptides from flounder skin, and the properties of the hydrolysate. The optimal processing conditions for peptic hydrolysis were as follows: a ratio of pepsin to dried skin powder of 2% (w/w), pH of 2.0, and a temperature of 50℃. Peptic hydrolysate contains several low-molecular weight peptides below 300 Da. Gly-Pro-Hyp(GPHyp) peptide, a process control index, was detected only in peptic hydrolysate on matrix-assisted laser desorption/ionization-time-of-flight(MALDI-TOF) spectrum. 2,2'-azinobis-(3-3-ethylbenzothiazolline-6- sulfonic acid(ABTS) radical scavenging activity of the peptic hydrolysate was comparable to that of 1 mM ascorbic acid, which was used as a positive control at pH 5.5, whereas collagenase inhibition was five times higher with the peptic hydrolysate than with 1 mM ascorbic acid at pH 7.5. However, the tyrosinase inhibition ability of the peptic hydrolysate was lower than that of arbutin, which was used as a positive control. The antibacterial effect of the peptic hydrolysate against Propionibacterium acne was not observed. These results suggest that the peptic hydrolysate derived from a flounder skin is a promising antiwrinkle agent that can be used in various food and cosmetic products to prevent wrinkles caused by ultraviolet radiations.

• 인간식물환경학회지
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• 제22권1호
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• pp.39-52
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• 2019

To evaluate the protective effect of collagen peptide-coated coffee extract on skin aging, cell viability was measured with a MTT assay using cultured CCD-986sk fibroblasts, and its effect on wrinkles in the skin of hairless mice induced by UVB-irradiation was examined. In addition, its effect on procollagen synthesis and anti-oxidative, and its inhibitory activity against collagenase, elastase, tyrosinase and MMP-1 were analysed. After the 30-minute topical treatment, the animals were exposed to UVB irradiation (60-100 mJ/cm²) for 4 weeks and its intensity increased during the period. Under the experimental conditions set in this study, the skin thickness of hairless mice significantly decreased (11.8-21.3%) compared to the control group. Based on these results, the prolonged oral intake of a collagen peptide mixture with coffee is expected to significantly increase the synthesis of procollagen in dermal fibroblasts, thereby contributing to the alleviation of wrinkling and lowered elasticity due to structural damage to the dermal layer caused by UV. The oral intake of collagen-coated coffee contributes to increasing collagen biosynthesis in a dose-dependent manner and alleviates the symptoms of thickened keratin caused by UV irradiation. However, it did not inhibit the enzymes involved in skin aging, whitening, wrinkle improvement, and antioxidation. Based on the these results, it can be concluded that the intake of collagen peptide-coated coffee extract can be utilized as an alternative material for the prevention or treatment of diseases associated with photoaging.

• 대한한방내과학회지
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• 제45권3호
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• pp.429-443
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• 2024

Background: The study reports the effect of Korean medicine treatment on a patient with left facial palsy caused by Wegener's granulomatosis. Case information: The patient was receiving steroid treatment for facial palsy and was hospitalized for 21 days. He received acupuncture, electroacupuncture, bee venom pharmacopuncture, and moxibustion treatment along with Ssanghwa-tang and Cheongansohabwon herbal medicine treatment. During hospitalization, the Sunnybrook facial grading scale, House-Brackmann scale and length of time for the eye to completely close were evaluated at 11/16, 11/21, 11/27, 12/1, and 12/6. Post treatment, the degree of the movement in the left eyelid was improved, it took less time for the eye to close completely, the movement of the forehead wrinkle muscles improved, but that of the facial muscles under the eyes and left orbicularis oculi muscle showed little improvement. Conclusion: Korean medicine treatment for facial palsy caused by Wegener's Granulomatosis helps restore mobility of the forehead and orbicularis oculi muscles.

• 한국빅데이터학회지
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• 제9권1호
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• pp.49-60
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• 2024

본 연구의 목적은 TV홈쇼핑 화장품 쿠션 상품 고객의 평가를 기초로 한 신상품 개발 제언을 도출하는 것이다. 분석 대상은 TV홈쇼핑을 통해 쿠션을 구매한 30~70대 여성 고객의 평가 20만 개를 파이썬 라이브러리인 셀레니움으로 크롤링하여 정제한 후 NLP, 텍스트 마이닝, 빈도, TF-IDF 분석으로 결과를 도출하였다. 연구의 주요 분석결과를 요약하면 다음과 같다. TV홈쇼핑의 타켓 연령대는 50-60대가 메인이며, 광채, 잡티, 주름커버, 밀착력에 큰 관심이 있었고, 쿠션 케이스가 예쁘고, 특히 모녀, 자매, 지인 등과 함께 사용하는 것을 선호하며, 선물용으로도 쿠션 제품을 고려한다는 것을 예측할 수 있다. 이에 함께 참고할 수 있는 제품의 성분이나 구성, 마케팅 전략 등에 대한 제언을 도출하였다. 제품 성분으로는 S.Acamella(스필란테스 아크멜라) 추출물이나 AHA(Alpha Hydroxy Acid) a- 또는 b- 성분을 활용하여 개발하는 것이 주요 제언이다. 다음으로, 고객들은 상품의 외관과 구성에 특별한 관심이 있었으며, 부모나 친구 등과 같은 주변 인물에게 선물로써 상품을 고려하고 있어 이를 중심으로 한 마케팅 전략 모색이 필요하다.

• 대한화장품학회지
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• 제42권4호
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• pp.351-358
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• 2016

본 연구에서는 Sophora japonica L. (S. japonica)학명의 콩과 식물 낙엽교목인 회화나무의 꽃, 열매, 가지 에탄올 추출물의 총 폴리페놀 함량 및 l,1-diphenyl-2-picryl-hydrazyl (DPPH) 라디칼 소거능 측정, 티로시나제 활성 저해력 측정 및 porcine pancreatic elastase (PPE) 저해력 측정을 통하여 기능성 화장품 소재로서의 활용 가능성을 확인하였다. 그 결과 총 폴리페놀 함량은 평균 각각 261.37 mg/g, 187.49 mg/g, 81.26 mg/g이며, DPPH 라디칼 소거능을 조사한 결과 50~1,000 mg/L 농도에서 회화나무 꽃 추출물은$17.68{\pm}1.59{\sim}51.40{\pm}1.04%$, 열매 추출물은 $27.48{\pm}0.22{\sim}50.89{\pm}0.13%$, 가지 추출물은 $30.79{\pm}0.55{\sim}45.17{\pm}0.83%$ 범위의 소거 활성을 나타내었다. 또한 같은 농도에서 티로시나제 저해능과 PPE 저해능을 실험한 결과 회화나무 꽃 추출물은 $0.27{\pm}0.12{\sim}11.38{\pm}0.57%$, $3.70{\pm}1.23{\sim}7.28{\pm}1.01%$ 열매 추출물은 $0.27{\pm}0.02{\sim}0.82{\pm}0.27%$, $3.06{\pm}2.13{\sim}13.03{\pm}2.99%$, 가지 추출물은 $0.09{\pm}0.16{\sim}0.55{\pm}0.27%$, $6.00{\pm}0.96{\sim}9.71{\pm}0.44%$ 범위로 티로시나제 저해능은 꽃 추출물이 높게 나타났다. 본 연구에서 회화나무의 피부개선에 미치는 효능, 효과를 살펴본 결과 꽃, 열매, 가지 추출물이 각 부위별로 효과가 상이하게 나타남을 알 수 있었다.

• 대한화장품학회지
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• 제44권3호
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• pp.277-284
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• 2018

콜라겐 펩타이드(collagen peptide)는 단백질의 가수 분해물로서 주름 완화, 보습력 증대, 탄력 개선 등의 특정 피부 효능을 나타낼 수 있어 화장품 혹은 피부 개선 기능식품으로서 활용되고 있다. ${\gamma}-aminobutyric$ acid (GABA)는 척추 동물의 뇌, 척수에 존재하는 신경전달 물질로서 수면의 질과 양을 개선해 준다고 알려져 있다. 본 연구에서는 콜라겐 펩타이드와 GABA의 복합물이 수면 장애가 있는 여성에게 8주 경구 섭취를 통해서 수면 및 피부 상태를 개선할 수 있는가에 관하여 확인하였다. 복합물(J85091900)은 8주간 연속적으로 섭취 시, 수면장애지수(PSQI)가 유의적으로 감소하였으며, 수면 시간을 7% 증가시켰다. 또한, 피부 거칠기, 눈가 주름 및 피부 수분량(capacitance)을 유의적으로 개선하였다. 이상의 결과에서 콜라겐과 GABA의 복합물은 복합 수면 장애에 따른 피부의 노화 현상으로부터 피부를 보호할 수 있음을 확인하여 먹는 화장품의 핵심 소재로 활용 가능함을 확인하였다.

• 산업경영시스템학회지
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• 제46권3호
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• pp.15-22
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• 2023

BNKT Ceramics, one of the representative Pb free based piezoelectric ceramics, constitutes a perovskite(ABO3) structure. At this time, the perovskite structure (ABO3) is in the form where the corners of the octahedrons are connected, and in the unit cell, two ions, A and B, are cations, A ion is located at the body center, B ion is located at each corner, and an anion O is located at the center of each side. Since Bi, Na, and K sources constituting the A site are highly volatile at a sintering temperature of 1100℃ or higher, it is difficult to maintain uniformity of the composition. In order to solve this problem, there should be suppression of volatilization of the A site material or additional compensation of the volatilized. In this study, the basic composition of BNKT Ceramics was set to Bi_0.5(Na_0.78K_0.22)_0.5TiO₃ (= BNKT), and volatile site (Bi, Na, and K sources) were coated in the form of a shell to compensate additionally for the A site ions. In addition, the physical and electrical properties of BNKT and its coated with shell additives(= @BNK) were compared and analyzed, respectively. As a result of analyzing the crystal structure through XRD, both BNKT(Core) and @BNK(Shell) had perovskite phases, and the crystallinity was almost similar. Although the Curie temperature of the two sintered bodies was almost the same (TC = 290 ~ 300 ℃), it was confirmed that the d33 (piezoelectric coefficient) and Pr (residual polarization) values were different. The experimental results indicated that the additional compensation for a shell additive causes the coarsening, resulting in a decrease in sintering density and Pr(remanent polarization). However, coating shell additives to compensate for A site ion is an effective way to suppress volatilization. Based on these experimental results, it would be the biggest advantage to develop an eco-friendly material (Lead-free) that replaced lead (Pb), which is harmful to the human body. This lead-free piezoelectric material can be applied to a biomedical device or products(ex. earphones (hearing aids), heart rate monitors, ultrasonic vibrators, etc.) and skin beauty improvement products (mask packs for whitening and wrinkle improvement).