http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
미세캡슐화한 녹차 및 자몽종자 추출물이 Murine RAW 264.7 대식세포주의 항염증에 미치는 영향 비교
전윤경(Jun, Yoon Kyung),김명환(Kim, Myung Hwan),성필남(Seong, Pil Nam),장문정(Chang, Moon-Jeong) 한국영양학회 2012 Journal of Nutrition and Health Vol.45 No.5
We compared the effects of grapefruit seed extract (GFSE), green tea extract (GT) and their microencapsulated extract on anti-inflammatory activities in murine RAW 264.7 macrophages cell line. In order to protect the bioactive compounds in the extracts, they were microencapsulated with maltodextrin and H2O. Nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS) protein expression and thiobarbiturate reactive substances (TBARS) were analyzed in LPS activated RAW 264.7 macrophages. The green tea extract at the range of 100-600 μg/mL inhibited NO, PGE2 production and iNOS protein expression without cytotoxicity in a dose-dependent manner. Grapefruit seed extract had strong inhibitory effects on NO and PGE production and iNOS protein expression at the range of 5-20 μg/mL without cytotoxicity. Microencapsulation of green tea extract had further inhibitory effects on NO and PGE2 production and on iNOS protein expression, whereas microencapsulated GFSE did not show any further inhibitory effects on these parameters. Taken together, our results suggest that GSFE might be a promising candidate for preventing inflammation related diseases, such as cardiovascular disease, cancer or diabetes, and the microencapsulation of green tea extract could improve its bioactivity. (Korean J Nutr 2012; 45(5): 443 ~ 451)
α-Tocopherol을 함유한 Nanostructured Lipid Carriers의 특성과 안정화 효과
전윤경 ( Yoon Kyung Jun ),임윤미 ( Yoon Mi Lim ),진병석 ( Byung Suk Jin ) 한국공업화학회 2015 공업화학 Vol.26 No.6
Loading of hydrophobic α-tocopherol into nanostructured lipid carrier (NLC) was performed for improving its oxidative stability. First, various NLCs with different constituents and mixing ratios were prepared and their characteristics were investigated. While the stable NLCs were made when cetyl palmitate (CP) or glyceryl monosterate (GMS) was used as a solid lipid, the phase separation occurred in the NLCs consisting of stearic acid. Particle sizes of the NLCs were several hundreds of nanometers and the size decreased with increasing the ratio of solvent to lipid. It was examined from DSC thermogram and anisotropy test that the degree of crystallinity of the lipid phase decreased and the lipid matrix became less ordered when octyldodecanol, a long chain fatty alcohol, was added into the solid lipid. The oxidative stability of α -tocopherol in NLC was remarkably improved compared to that in solution or emulsion under high temperature (45 ℃) and UV radiation, which was verified through DPPH test and peroxide value measurement.
친수성 L-ascorbic acid와 소수성 α-tocopherol을 모두 포집하는 ethosome의 특성
임윤미 ( Yoon Mi Lim ),전윤경 ( Yoon Kyung Jun ),박세연 ( Se Yeon Park ),진병석 ( Bayung Suk Jin ) 한국공업화학회 2014 공업화학 Vol.25 No.4
Coencapsulation of hydrophilic L-ascorbic acid and hydrophobic α-tocopherol in ethosome vesicles was attempted and theirproperties were investigated in this study. The size of vesicles decreased with increasing concentration of L-ascorbic acid solutionencapsulated in ethosome. The vesicle size and encapsulation efficiency of ethosomes increased slightly when α-tocopherol was added into the HPC-forming liquid crystalline membrane of ethosome. However, the vesicle size increasedhighly and the encapsulation efficiency decreased abruptly at mixing ratios above 25 wt% due to the formation of an imperfectliquid crystalline structure within a vesicle membrane. It was observed that antioxidant activity was maintained for 5 weeksat 40 ℃ when L-ascorbic acid and α-tocopherol were coencapsulated in ethosome. The L-ascorbic acid in ethosome wasstable compared to that in aqueous solution under UV radiation.