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Epigallocatechin Gallate 고함유 녹차추출물의 제조공정 개선
서은혜,김은정,전성봉,윤민지,최상운,최상운,유시용 한국생약학회 2019 생약학회지 Vol.50 No.3
A facile and convenient method was developed for the mass production of epigallocatechin gallate (EGCG) rich green tea extract (Er-GTE). The Er-GTE was successfully obtained from the crude water extract of green tea by the combination of two step purification, i.e., a simple adsorption process on the cation exchange resins (Trilite SCR-B) followed by the chromatography with Diaion HP-20 resins. The green tea extract produced by water extraction under 45oC was subjected to adsorb on the strongly acidic cation exchange resin, Trilite SCR-B. The eluate passed through the resin was reabsorbed on Diaion HP-20 resin, which was subjected to elute with a mixture of water and alcohol by conventional chromatographical manner. The EGCG content in Er-GTE was estimated above 97% by HPLC analysis and the newly developed method was regarded as the most suitable and appropriate process for the mass production of epigallocatechin gallate rich green tea extract (Er-GTE).
Nonporous Hydroxyapatite를 이용한 전두골 함몰개선의 치험례
양인석,김영균,이철우,유시봉,박정열,Yang, In-Seok,Kim, Young-Kyun,Lee, Chul-Woo,Yoo, Si-Bong,Park, Cheung-Yeoul 대한악안면성형재건외과학회 1992 Maxillofacial Plastic Reconstructive Surgery Vol.14 No.3
This is a case report of correction of traumatic right frontal bone depression. Traditionally, autogenous and homogenous corticocancellous bone have been inlaid or onlaid. This patient who had frontal bone depression of right forehead was operated with an extracranial augmentation procedure using Hydroxyapatite materials. The postoperative course was unremarkble and the patient was satisfied with a good facial contour. Now We will report the results.
조영필(Young Pill Cho),구자용(Ja Ryoung Koo),유시봉(Si Bong Yoo) 대한악안면성형재건외과학회 1985 Maxillofacial Plastic Reconstructive Surgery Vol.7 No.1
This is a case report of bilateral mandibular prognathism associated with macroglossia treated by C-sliding osteotomies in the rami with V-shaped partial glossectomy. The results are as follows: 1. The selection of the operation method can be decided by the clinical evaluation, the cephalometric analysis and the model analysis. 2. The bilateral mandibular prognathism is corrected esthetically and functionally by C-sliding osteotomies in the rami of mandible. 3. It was able to prevent from relapsing after practice of partial glossectomy.