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농산물의 잔류농약분석을 위한 가속용매추출 (Accelerated Solvent Extraction) 방법의 이용
이성우, 서혜영, 한병재, 정양모, 김준형, 노기미, 김경수, Lee. Sung-Woo, Seo. Hye-Young, Han. Byung-Jae, Jeong. Yang-Mo, Kim. Jun-Hyoung, No. Ki-Mi, Kim. Kyong-Su 한국응용생명화학회 한국응용생명화학회지 10 Pages
한국응용생명화학회 한국응용생명화학회지 2004, Vol.47 No.2 228-237 (10 pages)
수 있는 분석방법을 개발하기 위해 농산물 중에 잔류하고 있는 잔류농약성분을 대상으로 ASE(accelerated solvent extraction) 방법을 활용한 자동화된 전처리 방법을 검토하였다. ASE 추출조건은 preheat 1 min, heat 5 min, static 1 min, solvent flush% 60 vol, nitrogen purge 60 sec, cycle 4, pressure 1500 psi, temperature $100^{circ}C$를 선택하였다. 이 분석조건과 n-hexane:acetone(4 : 1, v/v)를 추출용매로 사용하였을 때, ASE 추출과 정제능력은 solvent extraction 방법과 유의적인 차이를 보이지 않았고, 추출 용매의... -
CO-SEPARATION OF Am AND RARE EARTH ELEMENTS FROM A HIGHLY ACIDIC RADWASTE SOLUTION BY A SOLVENT EXTRACTION WITH (DIMETHYLDIBUTYL TETRADECYLMALONAMIDE-DIHEXYLOCTANAMIDE)/N-DODECANE
Lee. Eil-Hee, Lim. Jae-Gwan, Chung. Dong-Yong, Yoo. Jae-Hyung, Kim. kwang-Wook 한국원자력학회 Nuclear engineering and technology : an international journal of the Korean Nuclear Society 8 Pages
한국원자력학회 Nuclear engineering and technology : an international journal of the Korean Nuclear Society 2009, Vol.41 No.3 319-326 (8 pages)
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Optimization of Solvent for the Determination of Polybrominated Diphenyl Ethers in High-Impact Polystyrene by GC/ECD
Kim. Dal-Ho, Park. Seung-Jin, Choi. Yong-Wook, Lee. Sung-Kwang 대한화학회 Bulletin of the Korean Chemical Society 4 Pages
대한화학회 Bulletin of the Korean Chemical Society 2012, Vol.33 No.10 3485-3488 (4 pages)
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Antimicrobial Activity of Various Parts of Tomato Plants Varied with Different Solvent Extracts
Dong Sub Kim, Yurina Kwack, Jung Heon Lee, Changhoo Chun 한국식물병리학회 The Plant Pathology Journal 7 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 2호 6 149-155 (7 pages)
50.0, 52.1, and 64.0%, respectively, compared with acetone solvent treatment. The antimicrobial compounds effective against R. solani were identified as linolenic acid and caffeic acid by bioautography and GC-MS. These two compounds were used to treat six phytopathogens to confirm their antimicrobial activities. Linolenic acid inhibited mycelial growth of R. solani, while caffeic acid showed only slight antimicrobial activity. Results indicated that we propose extracts from tomato leaves which... -
이온성액체와 Deep Eutectic Solvent를 사용한 잘피에서 카페인산과 로즈마리산의 추출
이유리, 이유진, 노경호, Lee. Yu Ri, Lee. Yu Jin, Row. Kyung Ho 한국화학공학회 Korean chemical engineering research 5 Pages
한국화학공학회 Korean chemical engineering research 2014, Vol.52 No.4 481-485 (5 pages)
잘피의 유용성분을 추출하기 위한 dipping, ultrasonic-assisted, heating추출법의 적용성을 검토하였다. 이온성 액체와 공융용매(DES)를 잘피에 존재하는 카페인산과 로즈마린산의 추출 효율을 증가시키기 위해 첨가제로써 사용하였다. 실험에서 확인된 최적의 조건은 동결건조된 0.005 g의 잘피 뿌리 파우더와 5 mL의 methanol 그리고 0.5 g의 DES-3를 바이알에 넣은 후 30분동안 dipping하여 추출하였다. 그 결과 0.19 mg/g 카페인산과 8.48 mg/g의 로즈마린산을 얻었다. 이 방법은 잘피에 있는 카페인산과 로즈마린산을 간단하고... -
초임계유체 $CO_2$ 및 Co-solvent 첨가에 따른 금은화(Lonicera fles)의 Flavonoid류 추출특성
서상철, 조성길, 홍주헌, 최용희, Suh. Sang-Chul, Cho. Sung-Gill, Hong. Joo-Heon, Choi. Yong-Hee 한국식품과학회 한국식품과학회지 6 Pages
한국식품과학회 한국식품과학회지 2005, Vol.37 No.2 183-188 (6 pages)
solvent에 citric acid를 농도별로 첨가한 결과 첨가량 1%까지는 추출수율이 농도 비례적으로 증가하는 경향을 나타내어 대조구에 비해 대략 luteolin이 14.64mg/100g, quercetin이 10.17mg/100g, apigenin이 2.4mg/100g의 유의적인 증가율을 보였으나 그 이상의 농도에서는 소량 감소하는 경향을 보였다. 한편 산을 첨가한 모든 조건에서 대조구보다 높은 수율을 얻을 수 있었다. 추출수율이 가장 우수하였던 citric acid가 1% 첨가된 60% aqueous methanol을 co-solvent로 초임계상태에 첨가하였을 때 공정압력이 100bar에서 200ber로... -
Development of a monoclonal antibody against deoxynivalenol for magnetic nanoparticle-based extraction and an enzyme-linked immunosorbent assay
Hyuk-Mi Lee, Sung-Ok Song, Sang-Ho Cha, Sung-Bok Wee, Karyn Bischoff, Sung-Won Park, Seong-Wan Son, Hwan-Goo Kang*, Myung-Haing 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 2호 5 143-150 (8 pages)
(0 to 1,000 mg/kg) ranged from 68.34 to 95.49% (CV; 4.10 to 13.38%). DON in a buffer solution (250, 500 and 1,000 ng/mL) was isolated using 300 μg of NVRQS-DON and 3 mg of magnetic nanoparticles (MNPs). The mean recovery rates of DON using this mAb-MNP system were 75.2, 96.9, and 88.1% in a buffer solution spiked with DON (250, 500, and 1,000 ng/mL). Conclusively we developed competitive ELISAs for detecting DON in animal feed and created a new tool for DON extraction using mAb-coupled MNPs. -
Extraction and characterization of lignin from black liquor and preparation of biomass-based activated carbon therefrom
Daeyeon Kim, Jinsil Cheon, Jeonghoon Kim, Daekyun Hwang, Ikpyo Hong, Oh Hyeong Kwon, Won Ho Park, Donghwan Cho 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 14 81-88 (8 pages)
In the present study, biomass-based lignin was extracted from industrial waste black liquor and the extracted lignin was characterized by means of attenuated total reflectance- Fourier transform infrared spectroscopy and 1H-nuclear magnetic resonance spectroscopy. The extracted lignin was carbonized at different temperatures and then activated with steam at 850oC. The extracted lignin in powder state was transformed into a bulky carbonized lignin due to possible fusion between the lignin... -
Extraction of Valuable Metals from Spent Desulfurizing Catalyst
김동진, 백승배, 이성원, Pradhan. Debabrata, Kim. Dong-Jin, Baik. Seung-Bai, Lee. Seoung-Won 한국자원리싸이클링학회 資源리싸이클링 : 한국자원리싸이클링학회지 7 Pages
한국자원리싸이클링학회 資源리싸이클링 : 한국자원리싸이클링학회지 2011, Vol.20 No.3 48-54 (7 pages)
황산으로 탈황 폐촉매를 침출한 결과 황산농도 1 M, 반응시간 1 hr인 실험조건에서 Ni 및 V은 95% 이상, 그리고 Mo은 30%가 침출되었다. 탈황 폐촉매의 Mo matrix 특성으로 인하여 다른 금속에 비하여 Mo의 침출율이 낮았으며, 본 침출반응은 확산반응에 의하여 제어되는 것으로 판단된다. Mo을 완전히 침출하기 위하여 유황성분이 제거된 폐촉매로 침출실험을 실시하였다. 1M 황산으로 처리후 탄산나트륨으로 세척시 Ni, Mo 그리고 V의 침출율은 99% 이었다. Ni 2 g/L; V 9 g/L, Mo 0.6 g/L 조성의 침출액을 LIX 841로 용매추출한... -
Applications of carbon-based materials in solid phase micro-extraction: a review
Jian Guo, Soo-Jin Park, Long-Yue Meng, Xinghua Jin 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 2 10-17 (8 pages)
analytical chemistry for high extraction efficiency and convenient operation. Different materials lead to different extraction results. Among existing materials, carbon-based materials are still attracting attention from scientists due to their excellent physical and chemical properties as well as their modifiable surfaces, which could enhance the adsorption effects of SPME fiber. This review introduces the preparation methods and applications of different kinds of carbon-based material coatings... -
Time-dependent proteomic and genomic alterations in Toll-like receptor-4-activated human chondrocytes: increased expression of lamin A/C and annexins
SeungHeeHa, HyoungKyuKim, NguyenThiTuyetAnh, NariKim, KyungSooKo, ByoungDooRhee, JinHan 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 16 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.5 8 531-546 (16 pages)
Activation of Toll-like receptor-4 (TLR-4) in articular chondrocytes increases the catabolic compartment and leads to matrix degradation during the development of osteoarthritis. In this study, we determined the proteomic and genomic alterations in human chondrocytes during lipopolysaccharide (LPS)-induced inflammation to elucidate the underlying mechanisms and consequences of TLR-4 activation. Human chondrocytes were cultured with LPS for 12, 24,and 36 h to induce TLR-4 activation. The... -
Anti-diabetic activities of catalpol in db/db mice
QinwenBao, XiaozhuShen, LiQian, ChenGong, MaoxiaoNie, YanDong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.2 3 153-160 (8 pages)
fi ve groups: model control gourp; db/db plus catalpol 40, 80, 120 mg/kg body wt. groups and db/db plus metformin 250 mg/kg group. Age-matched db/m mice were selected as normal control group. The mice were administered with corresponding drugs or solvent by gavage for 4 weeks. The oral glucose tolerance test was carried out at the end of 3rd week. After 4 weeks of treatment, the concentrations of fasting blood glucose (FBG), glycated serum protein (GSP), insulin (INS), triglyceride (TG), total... -
Technology for the Recovery of Os and Ru from Primary/Secondary Resources
손반반, 이만승, Sun. Pan-Pan, Lee. Man-Seung 한국자원리싸이클링학회 資源리싸이클링 : 한국자원리싸이클링학회지 9 Pages
한국자원리싸이클링학회 資源리싸이클링 : 한국자원리싸이클링학회지 2012, Vol.21 No.6 3-11 (9 pages)
오스뮴과 루테늄을 함유한 1차와 2차 자원으로부터 두 금속의 회수 방법을 조사했다. 오스뮴과 루테늄은 휘발성이 있는 산화물을 형성하므로 증발법을 통해 다른 백금족금속으로부터 분리가 가능하다. 두 금속은 염산용액에서 다양한 산화상태의 착물을 형성한다. 아민계 또는 아민계 혼합추출제는 침출용액으로부터 루테늄의 추출에 이용된다. 용매화 추출제는 루테늄과 오스뮴의 분리에 사용된다. 기존에 발표된 용매추출공정의 추출과 탈취조건을 조사했다. 용매추출에 대한 대체 공정으로 미량성분의 회수에 이용될 수 있는... -
LC/TOFMS를 이용한 생체시료의 내인성 대사체 분석법 개발
이인선, 김진호, 조수열, 심선보, 박혜진, 이진희, 이지현, 황인선, 김성일, 이정희, 조수연, 최돈웅, 조양하, Lee. In-Sun, Kim. Jin-Ho, Cho. Soo-Yeul, Shim. Sun-Bo, Park. Hye-Jin, Lee. Jin-He 한국식품위생안전성학회 한국식품위생안전성학회지 7 Pages
한국식품위생안전성학회 한국식품위생안전성학회지 2010, Vol.25 No.4 388-394 (7 pages)
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nPr-BTP/nitrobezene 추출 계에 의한 악티나이드(III)의 선택적 분리
이일희, 임재관, 정동용, 양한범, 김광욱, Lee. Eil-Hee, Lim. Jae-Kwan, Chung. Dong-Yong, Yang. Han-Beom, Kim. Kwang-Wook 한국방사성폐기물학회 방사성폐기물학회지 9 Pages
한국방사성폐기물학회 방사성폐기물학회지 2008, Vol.6 No.1 25-33 (9 pages)
본 연구는 nPr-BTP/nitrobenzene 추출 계에 의한 악티나이드(III)의 선택적 분리로, 우선 자연친화적 CHN 형 의 nPr-BTP (2.6-Bis-(5.6-n-propyl-1.2.4-triazin-3-yl)-pyridine)를 합성하고, 이의 희석제에 대한 용해성 및 질산에 대한 안정성 등을 평가하였다. 악티나이드(III)의 대표원소로는 Am을 선정하였으며, 0.1M nPr-BTP/nitrobenzene-1M $HNO_3$, O/A=2의 조건에서 Am은 약 85%, RE 원소는 Eu가 8%, 기타 Nd, Ce, Y 등은 3% 이하가 추출되어 (이때 Am/Eu의 상호분리 계수 약 60정도) 악티나이드(III)의 선택적 추출에는 별... -
환경대기 중 저분자 PAHs 측정을 위한 흡착-열탈착-GC/MS 방법의 적용
서석준, 서영교, 황윤정, 정동희, 백성옥, Seo. Seok-Jun, Seo. Young-Kyo, Hwang. Yoon-Jung, Jung. Dong-Hee, Baek. Sung-Ok 한국대기환경학회 한국대기환경학회지 16 Pages
한국대기환경학회 한국대기환경학회지 2014, Vol.30 No.4 362-377 (16 pages)
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Crown Ether/Chloroform 용매추출법을 이용한 토양시료중의 $^{89}Sr,;^{90}Sr$ 분석
홍광희, 최용호, 김상복, 이명호, 박효국, 최근식, 김삼랑, 이창우, Hong. Kwang-Hee, Choi. Yong-Ho, Kim. Sang-Bog, Lee. Myong-Ho, Park. Hyo-Guk, Choi. Kun-Sik, Kim. Sam-R 대한방사선방어학회 방사선방어학회지 8 Pages
대한방사선방어학회 방사선방어학회지 1996, Vol.21 No.1 9-16 (8 pages)
환경시료 중 토양에 대한 방사성 스트론튬인 $^{89}Sr$와 $^{90}Sr$의 분석을 위해 Ca과 Sr을 분리하기 위한 방법으로 Crown ether를 이용한 추출방법을 사용하여 기존의 발연질산법과 비교하여 보았다. Crown ether를 이용한 추출방법을 기존의 발연질산법과 비교하여 보았을 때 높은 Sr 수율을 보였을 뿐만 아니라 분석에 소요되는 시간과 절차가 훨씬 빠르고 간단했다. Crown ether을 이용한 추출방법으로 원전주변 토양에 대한 방사성 스트론튬의 분석을 수행하였으며, 방사성핵종 분석에 의한 환경감시의 효율적인 수행을 위한... -
A review: synthesis and applications of graphene/chitosan nanocomposites
Hui Yuan, Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 2 11-17 (7 pages)
Recently, with continuous developments in the field of materials science, graphene oxide (GO) has emerged as a promising material with excellent electrical, thermal, mechanical, and optical properties, which play important roles in most fields. Researchers have achieved considerable progress with graphene. Chitosan (CS) is a natural polymer that has been studied intensively owing to its specific formation, high chemical resistance, and excellent physical properties. These outstanding properties... -
Effect of phosphorus deficiency on erythrocytic morphology and function in cows
Ziwei Zhang, Mingyu Bi, Jie Yang, Haidong Yao, Zhonghua Liu, Shiwen Xu 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 3호 10 333-340 (8 pages)
The aim of this study was to evaluate the influence of phosphorus (P) deficiency on the morphological and functional characteristics of erythrocytes in cows. Forty Holstein-Friesian dairy cows in mid-lactation were randomly divided into two groups of 20 each and were fed either a low-P diet (0.03% P/kg dry matter [DM]) or a control diet (0.36% P/kg DM). Red blood cell (RBC) indices results showed RBC and mean corpuscular hemoglobin decreased while mean corpuscular volume increased significantly... -
Magnetic nanoparticle based purification and enzyme-linked immunosorbent assay using monoclonal antibody against enrofloxacin
Nam-Gun Kim, Myeong-Ae Kim, Young-Il Park, Tae-Sung Jung, Seong-Wan Son, ByungJae So, Hwan-Goo Kang 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 4호 6 431-437 (7 pages)
Monoclonal anti-enrofloxacin antibody was prepared for a direct competitive enzyme-linked immunosorbent assay (ELISA) and purification system using monoclonal antibody (mAb) coupled magnetic nanoparticles (MNPs). The IC50 values of the developed mAb for enrofloxacin (ENR), ciprofloxacin, difloxacin, sarafloxacin, pefloxacin, and norfloxacin were 5.0, 8.3, 9.7, 21.7, 36.0, and 63.7 ng/mL, respectively. The lowest detectable level of ENR was 0.7 ng/mL in the prepared ELISA system. To validate the... -
Effect of chronic lead intoxication on the distribution and elimination of amoxicillin in goats
Ahmed M. Soliman, Ehab A. Abu-Basha, Salah A. H. Youssef, Aziza M. Amer, Patricia A. Murphy, Catherine C. Hauck, Ronette Gehring 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 4호 4 395-403 (9 pages)
A study of amoxicillin pharmacokinetics was conducted in healthy goats and goats with chronic lead intoxication. The intoxicated goats had increased serum concentrations of liver enzymes (alanine aminotransferase and γ-glutamyl transferase), blood urea nitrogen, and reactivated δ-aminolevulinic acid dehydratase compared to the controls. Following intravenous amoxicillin (10 mg/kg bw) in control and lead-intoxicated goats, elimination half-lives were 4.14 and 1.26 h, respectively. The volumes... -
Quantitation of meloxicam in the plasma of koalas (Phascolarctos cinereus) by improved high performance liquid chromatography
Benjamin Kimble, Kong Ming Li, Merran Govendir* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 1호 2 7-14 (8 pages)
A plasma sample clean-up step was carried out with hydrophilic- lipophilic copolymer solid phase extraction cartridges. MEL was separated from an endogenous interference using an isocratic mobile phase [acetonitrile and 50 mM potassium phosphate buffer (pH 2.15), 45：55 (v：v)] on a Nova-Pak C18 4-mm (300 × 3.9 mm) column. Retention times for MEL and piroxicam were 8.03 and 5.56 min, respectively. Peak area ratios of MEL to the internal standard (IS) were used for regression analysis of the... -
A novel mycotoxin purification system using magnetic nanoparticles for the recovery of aflatoxin B1 and zearalenone from feed
Hyun-Jung Kim, Sung-Hee Kim, Jin-Kyu Lee, Cheong-Up Choi, Hee-Soo Lee, Hwan-Goo Kang*, Sang-Ho Cha* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 4호 5 363-369 (7 pages)
In this study, we developed a novel tool for purifying two mycotoxins, aflatoxin B1 (AFB1) and zearalenone (ZEN), in feed. This system utilized monoclonal antibodies (mAbs) against AFB1 and ZEN, and magnetic nanoparticles (MNPs). Among ten MNPs with different diameters and functional groups, a 100-nm diameter MNP (fMA) conjugated to an amine group (-NH2) was found to be optimum for coupling with mAbs. The optimal mAb concentrations for coupling to the fMA along with mycotoxin purification... -
Elm tree bark extract inhibits HepG2 hepatic cancer cell growth via pro-apoptotic activity
Tae Myoung Kim, Sang-Kyung Shin, Tae-Wang Kim, So-Young Youm, Dae Joong Kim, Byeongwoo Ahn* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 1호 2 7-13 (7 pages)
Control of inflammation is widely accepted as an important strategy for cancer chemoprevention. Anti-inflammatory effects of bark extracts of elm tree (BEE) have been amply reported. Therefore, BEE may be a good candidate cancer chemopreventive agent. Considering the high incidence of hepatic cancer and limited therapeutic approaches for treating this disease, it is important to develop liver cancer-specific chemopreventive agents. To evaluate the chemopreventive potential of BEE, we... -
Autoantibodies against thyroid hormones and their influence on thyroxine determination with chemiluminescence immunoassay in dogs
Marion Piechotta*, Michael Arndt, Hans-Otto Hoppen 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2010, 제 11권 제 3호 3 191-196 (6 pages)
Autoantibodies against thyroxin (T4AA) and triiodothyronine (T3AA) are present in dogs with autoimmune thyroiditis and have been reported to interfere with immunoassays. The objectives of this study were to determine the frequency of autoantibodies and to determine whether interference occurs by T4AA, using a non-immunological method (high performance liquid chromatography, HPLC) for thyroxin (T4) measurement. Based on clinical symptoms, T4 and thyroid stimulating hormone (TSH) concentration,... -
BSE situation and establishment of Food Safety Commission in Japan
Takashi Onodera, Chi-Kyeong Kim 대한수의학회 Journal of Veterinary Science 11 Pages
대한수의학회 Journal of Veterinary Science 2006, 제 7권 제 1호 1 1-11 (11 pages)
Eight major policies were implemented by Japanese Government since Oct.2001, to deal with bovine spongiform encephalopathy (BSE).These are;1)Surveillance in farm by veterinarian, 2)Prion test at healthy 1.3mi cows/yr, by veterinarian, 3)Elimination of specified risk material (SRM), 4)Ban of MBM for production, sale use, 5)Prion test for fallen stocks, 6)Transparent information and traceability, 7)New Measures such as Food Safety Basic Law, and 8)Establish of Food Safety Commission in the Cabinet... -
Expression and characterization of the flavoprotein domain of gp91phox
Chang-Hoon Han and Mun-Han Lee 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2000, 제 1권 제 1호 3 19-26 (8 pages)
Truncated forms of gp91(phox) were expressed in E. coli in which the N-terminal hydrophobic transmembrane region was replaced with a portion of the highly soluble bacterial protein thioredoxin (TRX). TRX-gp91(phox) (306-569), which contains the putative FAD and NADPH binding sites, showed NADPH-dependent NBT (nitroblue tetrazolium) reductase activity, whereas TRX-gp91(phox) (304-423) and TRX-gp91(phox) (424-569) were inactive. Activity saturated at about a 1:1 molar ratio of FAD to...
