• Title/Summary/Keyword: Extraction methods

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Development of Methods for Protein Extraction from Three Major Korean Fermented Soy Foods for 2-Dimensional Gel and Mass Spectrometric Analyses

  • Lim, Jin-Kyu
    • Journal of Applied Biological Chemistry
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    • v.51 no.3
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    • pp.88-94
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    • 2008
  • Three different protein extraction methods-phenol extraction, trichloroacetic acid (TCA) precipitation, and desalting/TCA precipitation-were compared to determine the optimal reproducible high resolution 2-dimensional (2-D) electrophoresis for each chungkugjang, doenjang, and kochujang samples. The soluble proteins from Chungkugjang extracted by phenol were separated with high reproducibility and resolution, and gained 1.75- to 3-fold more protein spots on 2-D gel than those from the other methods. On the contrary, the extracted proteins from doenjang and kochujang treated by desalting/TCA precipitation method showed about 1.5- to 3.3-fold more protein spots on 2-D gel. Using the established methods, the changes in the protein profiles of the fermented soy foods were monitored during the fermentation period by 2-DE. One of the major proteins in soy, $\beta$-conglycinin $\alpha$-subuint, and some proteins with unknown functions were localized on 2-D gel as the protease-resistant proteins throughout the fermentation period of doenjang. Changes in the protein profile monitored by the established methods can provide basic information on unfolding the mechanisms of the generation of biofunctional activity in the fermented soy foods.

The Case of Nasal Polyp Extraction which was treated with Hemostat Forceps (지혈겸자 적출술을 이용한 비용종 환자의 치험 1례)

  • Kim, Dong-Hyun;Hong, Seung-Ug
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.28 no.2
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    • pp.85-92
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    • 2015
  • Object : To report the case of the improved patient after the extraction with hemostst forcept. Methods : We treated one patient who visited Gabsan Korean medical clinic.First two times, We used acupuncture, fumigation, exsanguination, external medincine. He had some agonistic response. But It was not satisfactory. So We operated extraction with hemostat forceps. Result and Conclusion : 1. We extracted nasal polyp, the length of polyp was 5.5 cm2. After extraction, the patient had not headache, nasal congestion and so on.3. On intranasal endoscopy, left nose did not have polyp any more.4. Hemostat forceps extraction is effective to nasal polyp.

Simultaneous Analysis of Semi-Volatile Organic Acid Priority Pollutants in Soil (토양 중의 비휘발성 산성 유기 Priority Pollutants 동시분석에 관한 연구)

  • Lee, Seung Seok;Park, Gyo Beom;Lee, Seong Geun
    • Journal of the Korean Chemical Society
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    • v.38 no.3
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    • pp.246-253
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    • 1994
  • The simultaneous analysis of 11 semi-volatile organic acid compound which are listed as priority pollutants by EPA, were performed by GC/MS-SIM(selected ion monitoring). Two extraction procedures, sonication extraction and Soxhlet extraction, were studied as an extraction and concentration method for priority pollutants in soil. Accurecy and precision of the methods were measured by the calculation of mean recovery, mean relative standard deviation, and method detection limit. Finally, limitations and prospects were discussed.

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Facial Feature Extraction with Its Applications

  • Lee, Minkyu;Lee, Sangyoun
    • Journal of International Society for Simulation Surgery
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    • v.2 no.1
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    • pp.7-9
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    • 2015
  • Purpose In the many face-related application such as head pose estimation, 3D face modeling, facial appearance manipulation, the robust and fast facial feature extraction is necessary. We present the facial feature extraction method based on shape regression and feature selection for real-time facial feature extraction. Materials and Methods The facial features are initialized by statistical shape model and then the shape of facial features are deformed iteratively according to the texture pattern which is selected on the feature pool. Results We obtain fast and robust facial feature extraction result with error less than 4% and processing time less than 12 ms. The alignment error is measured by average of ratio of pixel difference to inter-ocular distance. Conclusion The accuracy and processing time of the method is enough to apply facial feature based application and can be used on the face beautification or 3D face modeling.

Clinical study of Atopic Dermatitis patient treated with Poison Extraction Method (배독요법을 통한 아토피환자 2례에 대한 임싱적 고찰)

  • Park, Chi-Young;Hong, Kwon-Eui
    • Journal of Pharmacopuncture
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    • v.10 no.2 s.23
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    • pp.107-117
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    • 2007
  • Objectives : This study is desinged in order to evaluate the Poison extraction method for the Atopic dermatitis. Methods : The authors observed the two cases of Atopic dermatitis patients who previously used steroid-based ointment. for treating the Poison Extraction Method. Conclusions : 1. In case 1, the patient with mild case of Atopic dermatitis in face is treated with the Poison extraction method. Rash symptoms intensed for first few days. As sweating appeared in the local area from the seventh day, all the symptoms was disappeared rapidly. No recurrence was found. 2. In case 2, the patient with severe case of Atopic dermatitis in whole body is treated with the Poison extraction method. The symptoms intensed after two months and all the symptoms of itchiness, rash, scaly letter dissapeared in the third and fourth months. No recurrence was found. 3. In both cases of mild and severe cases of Atopic dermatitis. all the symptoms were disappeared and no recurrence was found with the Poison Extraction Method.

Comparison of Essential Oil Composition Extracted from Agastache rugosa by Steam Distillation and Supercritical Fluid Extraction (수증기 증류법과 초임계유체 추출법으로 분리한 배초향의 정유성분 조성 비교)

  • 김근수;김삼곤;김용하;김영회;이종철
    • Journal of the Korean Society of Tobacco Science
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    • v.23 no.1
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    • pp.65-70
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    • 2001
  • In order to compare the extraction patterns of main components from the raw material between the extraction methods, the aerial parts (dried stem, leaves, and flowers) of Agastache rugosa were extracted by SDE simultaneous steam distillation & extraction) and SFE (supercritical fluid extraction). Volatile components of essential oil and extract were identified by GC and GC-MSD. The contents of essential oil extracted by SDE were 0.49% in aerial part of Agastache rugosa on dry basis. Major components were methyl chavicol(27.2%), isomenthone(24.6%), hexadecanoic acid(13.0%). menthone (5.5%) among 32 kinds of components confirmed in essential oil. On the other hand, the contents of SFE extracts revealed 3.21% on dry basis, 6 times higher than those of SDE. Major components were isomenthone(15.3%), hexadecanoic acid(13.7%), methyl chavicol(12.6%), benzoic acid(3.8%) among 33 kinds of components identified in extract.

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The Effect of Extraction Conditions and Film Side on the Molecular Conformation of Silk Sericin Film

  • Jo, Yoon Nam;Bae, Do Gyu;Um, In Chul
    • International Journal of Industrial Entomology and Biomaterials
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    • v.26 no.2
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    • pp.113-118
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    • 2013
  • In this study, silk sericin films were prepared using different extraction methods, and the molecular conformation of sericin was examined using Fourier-transform infrared spectroscopy with attenuated total reflection geometry. Additionally, the effect of the film side (air-facing side or plate-facing side) on the molecular conformation of the sericin films was investigated. Interestingly, the molecular conformation of the sericin film depended on the film side. The molecular conformation of air-facing side of the sericin film was significantly influenced by extraction solution and time. The ${\beta}$-sheet crystallization and the crystallinity index of the sericin film markedly increased with an increase in the extraction time in hot water. The order of the crystallinity indices for the sericin films obtained with different extraction solutions was as follows: citric acid solution > urea solution >> hot water. In contrast, no remarkable differences were observed in the molecular conformation of the plate-facing side of the sericin film after extraction in hot water for different time periods. Urea and citric acid solution extractions showed remarkably higher crystallinity indices for sericin than those obtained after hot water extraction. However, no significant differences were observed in the crystallinity index of sericin between urea and citric acid solution extraction in plate-facing side of the film.

Changes in Extraction Efficiency of Pine Needles depending on Extraction Method and the Condition (추출 방법과 조건에 따른 소나무 지엽 추출효율 변화)

  • Kim, Dong Sung;Kim, Hyung Min;Sung, Yong Joo;Kang, Seog Goo;Kang, Ho-Yang;Lee, Jun-Woo;Kim, Se Bin;Park, Gwan-Soo
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.48 no.1
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    • pp.93-99
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    • 2016
  • The extraction efficiency depending on the extracting methods and the conditions of extraction was investigated. The common steam extraction was compared to the distillation extraction method. The effects of the samples size and the extraction time on the extract yield were also investigated by using UV-Vis spectrophotometer. One of the functional components of pine needle extract as the natural phenol base components were detected by the UV-VIS at around 235 nm wavelength range. The absorbance intensity at around 235 nm wavelength of the pine needle extract was used as the indicator of the extraction efficiency in this experiment. The distillation extraction showed the higher extract yield than the steam extraction. The grinding treatment of pine needles also resulted in the better extract performance, but the severe grinding showed a little decrease in the extract yield especially in case of the distillation extraction method. More than half of the extract was collected at the first stage of the extraction, that was the first 15 minutes in the total 60 minutes extraction.

Competition Relation Extraction based on Combining Machine Learning and Filtering (기계학습 및 필터링 방법을 결합한 경쟁관계 인식)

  • Lee, ChungHee;Seo, YoungHoon;Kim, HyunKi
    • Journal of KIISE
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    • v.42 no.3
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    • pp.367-378
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    • 2015
  • This study was directed at the design of a hybrid algorithm for competition relation extraction. Previous works on relation extraction have relied on various lexical and deep parsing indicators and mostly utilize only the machine learning method. We present a new algorithm integrating machine learning with various filtering methods. Some simple but useful features for competition relation extraction are also introduced, and an optimum feature set is proposed. The goal of this paper was to increase the precision of competition relation extraction by combining supervised learning with various filtering methods. Filtering methods were employed for classifying compete relation occurrence, using distance restriction for the filtering of feature pairs, and classifying whether or not the candidate entity pair is spam. For evaluation, a test set consisting of 2,565 sentences was examined. The proposed method was compared with the rule-based method and general relation extraction method. As a result, the rule-based method achieved positive precision of 0.812 and accuracy of 0.568, while the general relation extraction method achieved 0.612 and 0.563, respectively. The proposed system obtained positive precision of 0.922 and accuracy of 0.713. These results demonstrate that the developed method is effective for competition relation extraction.

Antioxidant and physiological activities of Hijikia fusiforme by extraction methods (추출방법에 따른 톳 추출물의 항산화 및 생리활성 특성)

  • Kwon, Yu-ri;Youn, Kwang-Sup
    • Food Science and Preservation
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    • v.24 no.5
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    • pp.631-637
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    • 2017
  • The physiological properties of extracts from Hizikia fusiforme with different extraction methods (hot water extraction, autoclave extraction and high pressure extraction) were investigated. The amounts of substances related to polyphenol and flavonoids contents were the highest in autoclave extract (30.51 mg/g and 4.78 mg/g, respectively). The DPPH radical scavenging activity was the highest in the autoclave extract (81.80%) at the 5 mg/mL. Autoclave extract exhibited the strongest ABTS radical scavenging activity and reducing power among the three extraction methods. However, ferrous ion chelating, TBA reactive substances and xanthine oxidase inhibition activity of high pressure extract were higher than those of the other extracts. Additionally, the tyrosinase and elastase inhibition activities of high pressure extract with a concentration of 1 mg/mL were higher than those of the other extracts. These results suggest that extracts of Hizikia fusiforme have a potential to act as functional materials, and autoclave and high pressure extractions are superior to hot water extraction for enhancement of the biological activity.