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Sutthiwanjampa, Chanutchamon,Kim, Sang Moo Taylor & Francis Health Sciences 2015 NATURAL PRODUCT RESEARCH Vol.29 No.17
<P>The hydrolysates of fresh and boiled Venus clams with five different proteases for the production of low-molecular protein hydrolysates were optimised by response surface methodology. Alcalase hydrolysates exhibited the strongest hyaluronidase inhibitory activity. The optimum hydrolysis conditions of fresh and boiled clams were< enzyme-to-substrate ratio (E/S), 2.15%; time, 150 min; water-to-substrate ratio (W/S), 83.84 mL g(-1) for fresh clam, and E/S, 2.02%; time, 4.11 h; W/S, 69.74 mL g(-1) for boiled clam. The fresh and boiled clam protein hydrolysates were fractionated by S-200 HR size-exclusion chromatography, which resulted in one (FH1) and two (BH1 and BH2) fractions, respectively. BH1 exhibited the highest hyaluronidase and elastase inhibitory activities with specific activities of 141.15 and 81.36% mL mg(-1), respectively. Therefore, the boiled Venus clam hydrolysate might be developed as a cosmeceutical agent because of its strong hyaluronidase and elastase inhibitory activities.</P>
강신혁,Chanutchamon Sutthiwanjampa,김현석,허찬영,김미경,김한구,배태희,장승환,김우섭,박한수 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.97 No.-
Silicone is the primary implant material used in plastic surgery; however, it exhibits some inherentdisadvantages. For instance, it can cause delayed seroma, breast implant-associated anaplastic large celllymphoma, and capsular contracture, which are closely related to the type of implant surface. Biomaterialsurface modification techniques are continuously being improved for application in manyfields. Herein,conditions for oxygen (O2) plasma treatment on various surface types of peri-silicone implants wereoptimized. Following optimal treatment, surface hydrophilicity, protein adsorption, bacterial adhesion,cell viability and proliferation, changes in implant shell mechanical properties, and in vivo tissue responsewere examined. Hydrophobicity decreased following O2 plasma treatment. Bacterial adhesion andprotein adsorption were significantly inhibited, and mechanical properties were improved. There was notopographic change on the implant surface. In vitro cells were evenly distributed on the O2 plasmatreatedsurface, and in vivo analysis confirmed a decrease in capsule thickness, collagenfibercomposition, number of inflammatory cells, and TGF-β1 and α-SMA expression. Additionally, reducedactivation of cytokines related to macrophage and T-cell responses was observed. O2 plasma surfacetreatment, under optimal conditions, is a simple and effective method with potential clinical applicationsfor attenuating excessive capsule formation and the immune response.
Mallinath S. Birajdar,Byung Hwi Kim,Chanutchamon Sutthiwanjampa,강신혁,Chan Yeong Heo,Hansoo Park 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
Silicone implants have been widely used for the fabrication of medical devices and implants due to theirbiocompatibility and inert properties. However, the contact with biologicalfluids and the ensuing surfaceadsorption of proteins often lead to the formation of biofilms such as capsular contracture (CC), requiringthe removal of implants. Therefore, there has been an urgent demand for surface modification withbiomaterials having anti-inflammatory, anti-microbial, and anti-fibrotic activities to prevent CC onsilicone implants. Here, Itaconic acid (IA) conjugated with PDMS (IA-PDMS) and IA-conjugated gelatinpolymer (IA-GTpoly) conjugated with PDMS (IA-GTpoly-PDMS) with various concentrations wereexamined as a candidate for inhibition of CC on the surface of PDMS. The IA-PDMS and IA-GTpoly-PDMSsurfaces showed lower inflammation, in vivo capsule thickness, and collagen density than the bare PDMSdid. Our results demonstrated the significant potential of IA based materials for surface modification ofPDMS to develop biocompatible surfaces for various biomedical devices.
Sathira Hirun,최정화,Jutatip Ayarungsaritkul,Chonnipa Pawsaut,Chanutchamon Sutthiwanjampa,Quan V Vuong,Suwimol Chockchaisawasdee,허영란,Christopher J Scarlett 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.2
Far-infrared (FIR) vacuum is an advanced drying technique that has recently been applied in food processing. Optimal drying conditions for processing tea from Miang leaves using FIR vacuum drying were investigated. Response surface methodology with a central composite design was used to design, analyze, and predict the optimal time and temperature conditions for FIR vacuum drying, taking into account the physicochemical properties of Miang leaves. When the temperature increased from 50 to 65℃ and the time from 60 to 120 min, the amount of epicatechin, epicatechin gallate, epigallocatechin gallate, and total catechins significantly (p<0.05) increased while the moisture content and water activity significantly (p<0.05) decreased, compared with controls. The physicochemical properties of dried Miang leaves were significantly (p>0.05) influenced by time and temperature, compared with controls. Drying conditions of 65℃ for 120 min are recommended for optimization of drying.