1
|
Jun S, Park S, Sun JM, Lee SH, Ahn JS, Ahn MJ, Cho J, Jung HA. Real-World Outcomes of Immunotherapy in Second- or Later-Line Non-Small Cell Lung Cancer with Actionable Genetic Alterations. Cancers (Basel) 2023; 15:5450. [PMID: 38001710 PMCID: PMC10670305 DOI: 10.3390/cancers15225450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/13/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
INTRODUCTION While the efficacy of immune checkpoint inhibitors (ICIs) in treating non-small cell lung cancer (NSCLC) patients with actionable genetic alterations (AGAs) is modest, certain patients demonstrate improved survival. Thus, this study aimed to evaluate the benefits of ICIs in NSCLC patients with diverse AGAs and verify the predictive biomarkers of ICI efficacy. METHODS From January 2018 to July 2022, this study compared the progression-free survival (PFS) of NSCLC patients with different AGAs treated with ICI monotherapy as second- or later-line therapy at Samsung Medical Center. To ascertain the predictors of ICIs efficacy, we adjusted ICIs' effects on PFS in terms of clinical and molecular biomarkers. RESULTS EGFR (46.0%) was the most prevalent mutation in 324 patients. In multivariate analysis, PD-L1 positivity (tumor proportion score (TPS) ≥ 1%) (HR = 0.41) and the use of steroids for immune-related adverse events (HR = 0.46) were positive factors for ICI therapy in the AGAs group. Co-existing mutation of STK11 with KRAS mutation (HR = 4.53) and TP53 with MET mutation (HR = 9.78) was negatively associated with survival. CONCLUSIONS The efficacy of ICI treatment varied across AGA subtypes, but patients with KRAS, MET, and BRAF mutations demonstrated relatively long-duration benefits of ICI therapy. PD-L1 was a significant positive predictive biomarker in all AGA groups.
Collapse
Affiliation(s)
- Soojin Jun
- Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul 06355, Republic of Korea; (S.J.); (J.C.)
| | - Sehhoon Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (S.P.); (J.-M.S.); (S.-H.L.); (J.S.A.); (M.-J.A.)
| | - Jong-Mu Sun
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (S.P.); (J.-M.S.); (S.-H.L.); (J.S.A.); (M.-J.A.)
| | - Se-Hoon Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (S.P.); (J.-M.S.); (S.-H.L.); (J.S.A.); (M.-J.A.)
| | - Jin Seok Ahn
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (S.P.); (J.-M.S.); (S.-H.L.); (J.S.A.); (M.-J.A.)
| | - Myung-Ju Ahn
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (S.P.); (J.-M.S.); (S.-H.L.); (J.S.A.); (M.-J.A.)
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul 06355, Republic of Korea; (S.J.); (J.C.)
| | - Hyun Ae Jung
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea; (S.P.); (J.-M.S.); (S.-H.L.); (J.S.A.); (M.-J.A.)
| |
Collapse
|
2
|
Kang T, You Y, Jun S. Correction to: Supercooling preservation technology in food and biological samples: a review focused on electric and magnetic field applications. Food Sci Biotechnol 2023; 32:1453. [PMID: 37457406 PMCID: PMC10348998 DOI: 10.1007/s10068-020-00786-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
[This corrects the article DOI: 10.1007/s10068-020-00750-6.].
Collapse
Affiliation(s)
- Taiyoung Kang
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822 USA
| | - Youngsang You
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822 USA
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822 USA
| |
Collapse
|
3
|
Yoon DK, Choi I, Won YJ, Shin Y, Cheon KS, Oh H, Lee C, Lee S, Cho MH, Jun S, Kim Y, Kim SL, Baek J, Jeong H, Lyu JI, Lee GS, Kim KH, Ji H. QTL Mapping of Tiller Number in Korean Japonica Rice Varieties. Genes (Basel) 2023; 14:1593. [PMID: 37628644 PMCID: PMC10454613 DOI: 10.3390/genes14081593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/25/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
Tiller number is an important trait associated with yield in rice. Tiller number in Korean japonica rice was analyzed under greenhouse conditions in 160 recombinant inbred lines (RILs) derived from a cross between the temperate japonica varieties Odae and Unbong40 to identify quantitative trait loci (QTLs). A genetic map comprising 239 kompetitive allele-specific PCR (KASP) and 57 cleaved amplified polymorphic sequence markers was constructed. qTN3, a major QTL for tiller number, was identified at 132.4 cm on chromosome 3. This QTL was also detected under field conditions in a backcross population; thus, qTN3 was stable across generations and environments. qTN3 co-located with QTLs associated with panicle number per plant and culm diameter, indicating it had pleiotropic effects. The qTN3 regions of Odae and Unbong40 differed in a known functional variant (4 bp TGTG insertion/deletion) in the 5' UTR of OsTB1, a gene underlying variation in tiller number and culm strength. Investigation of variation in genotype and tiller number revealed that varieties with the insertion genotype had lower tiller numbers than those with the reference genotype. A high-resolution melting marker was developed to enable efficient marker-assisted selection. The QTL qTN3 will therefore be useful in breeding programs developing japonica varieties with optimal tiller numbers for increased yield.
Collapse
Affiliation(s)
- Dong-Kyung Yoon
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Inchan Choi
- Department of Agricultural Engineering, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54875, Republic of Korea;
| | - Yong Jae Won
- Cheorwon Branch, National Institute of Crop Science, Rural Development Administration (RDA), Cheorwon 24010, Republic of Korea;
| | - Yunji Shin
- Genecell Biotech Inc., Wanju 55322, Republic of Korea;
| | - Kyeong-Seong Cheon
- Department of Forest Bioresources, National Institute of Forest Science, Suwon 16631, Republic of Korea;
| | - Hyoja Oh
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Chaewon Lee
- Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration (RDA), Suwon 16429, Republic of Korea;
| | - Seoyeon Lee
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Mi Hyun Cho
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Soojin Jun
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Yeongtae Kim
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Song Lim Kim
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Jeongho Baek
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - HwangWeon Jeong
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Jae Il Lyu
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Gang-Seob Lee
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Kyung-Hwan Kim
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| | - Hyeonso Ji
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Republic of Korea; (D.-K.Y.); (H.O.); (S.L.); (M.H.C.); (S.J.); (Y.K.); (S.L.K.); (J.B.); (H.J.); (J.I.L.); (G.-S.L.); (K.-H.K.)
| |
Collapse
|
4
|
Lee I, So H, Kim J, Auh JH, Wall MM, Li Y, Ho K, Jun S. Selective Detection of Escherichia coli K12 and Staphylococcus aureus in Mixed Bacterial Communities Using a Single-Walled Carbon Nanotube (SWCNT)-Functionalized Electrochemical Immunosensor with Dielectrophoretic Concentration. Nanomaterials (Basel) 2023; 13:985. [PMID: 36985878 PMCID: PMC10051117 DOI: 10.3390/nano13060985] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
An electrochemical immunosensor has been developed for the rapid detection and identification of potentially harmful bacteria in food and environmental samples. This study aimed to fabricate a microwire-based electrochemical immunosensor (MEI sensor) for selective detection of Escherichia coli and Staphylococcus aureus in microbial cocktail samples using dielectrophoresis (DEP)-based cell concentration. A gold-coated tungsten microwire was functionalized by coating polyethylenimine, single-walled carbon nanotube (SWCNT) suspension, streptavidin, biotinylated antibodies, and then bovine serum albumin (BSA) solutions. Double-layered SWCNTs and 5% BSA solution were found to be optimized for enhanced signal enhancement and nonspecific binding barrier. The selective capture of E. coli K12 or S. aureus cells was achieved when the electric field in the bacterial sample solution was generated at a frequency of 3 MHz and 20 Vpp. A linear trend of the change in the electron transfer resistance was observed as E. coli concentrations increased from 5.32 × 102 to 1.30 × 108 CFU/mL (R2 = 0.976). The S. aureus MEI sensor fabricated with the anti-S. aureus antibodies also showed an increase in resistance with concentrations of S. aureus (8.90 × 102-3.45 × 107 CFU/mL) with a correlation of R2 = 0.983. Salmonella typhimurium and Listeria monocytogenes were used to evaluate the specificity of the MEI sensors. The functionalization process developed for the MEI sensor is expected to contribute to the sensitive and selective detection of other harmful microorganisms in food and environmental industries.
Collapse
Affiliation(s)
- Inae Lee
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA; (I.L.)
| | - Heejin So
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA; (I.L.)
| | - Jungyoon Kim
- Department of Food Science & Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Joong-Hyuck Auh
- Department of Food Science & Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Marisa M. Wall
- Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, 64 Nowelo Street, Hilo, HI 96720, USA
| | - Yong Li
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA; (I.L.)
| | - Kacie Ho
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA; (I.L.)
| | - Soojin Jun
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA; (I.L.)
| |
Collapse
|
5
|
Pereira GM, Jun S, Li QX, Wall MM, Ho KK. Formation and physical characterization of soy protein-isoflavone dispersions and emulsions. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
6
|
Modzelewska-Kapituła M, Jun S. The application of computer vision systems in meat science and industry - A review. Meat Sci 2022; 192:108904. [PMID: 35841854 DOI: 10.1016/j.meatsci.2022.108904] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 07/05/2022] [Accepted: 07/05/2022] [Indexed: 11/19/2022]
Abstract
Computer vision systems (CVS) are applied to macro- and microscopic digital photographs captured using digital cameras, ultrasound scanners, computer tomography, and wide-angle imaging cameras. Diverse image acquisition devices make it technically feasible to obtain information about both the external features and internal structures of targeted objects. Attributes measured in CVS can be used to evaluate meat quality. CVS are also used in research related to assessing the composition of animal carcasses, which might help determine the impact of cross-breeding or rearing systems on the quality of meat. The results obtained by the CVS technique also contribute to assessing the impact of technological treatments on the quality of raw and cooked meat. CVS have many positive attributes including objectivity, non-invasiveness, speed, and low cost of analysis and systems are under constant development an improvement. The present review covers computer vision system techniques, stages of measurements, and possibilities for using these to assess carcass and meat quality.
Collapse
Affiliation(s)
- Monika Modzelewska-Kapituła
- Department of Meat Technology and Chemistry, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, Plac Cieszyński 1, 10-719 Olsztyn, Poland.
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA
| |
Collapse
|
7
|
Jun S, Lee K, Song J. M186 Automated processing of sample preparation for homocysteine analysis using LC-MS/MS. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
8
|
|
9
|
Lee BE, Kang T, Jenkins D, Li Y, Wall MM, Jun S. A single-walled carbon nanotubes-based electrochemical impedance immunosensor for on-site detection of Listeria monocytogenes. J Food Sci 2021; 87:280-288. [PMID: 34935132 DOI: 10.1111/1750-3841.15996] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 10/26/2021] [Accepted: 11/01/2021] [Indexed: 11/27/2022]
Abstract
Real-time and sensitive detection of pathogenic bacteria in food is in high demand to ensure food safety. In this study, a single-walled carbon nanotubes (SWCNTs)-based electrochemical impedance immunosensor for on-site detection of Listeria monocytogenes (L. monocytogenes) was developed. A gold-plated wire was functionalized using polyethylenimine (PEI), SWCNTs, streptavidin, biotinylated L. monocytogenes antibodies, and bovine serum albumin (BSA). A linear relationship (R2 = 0.982) between the electron transfer resistance measurements and concentrations of L. monocytogenes within the range of 103 -108 CFU/ml was observed. In addition, the sensor demonstrated high selectivity towards the target in the presence of other bacterial cells such as Salmonella Typhimurium and Escherichia coli O157:H7. To facilitate the demand for on-site detection, the sensor was integrated into a smartphone-controlled biosensor platform, consisting of a compact potentiostat device and a smartphone. The signals from the proposed platform were compared with a conventional potentiostat using the immunosensor interacted with L. monocytogenes (103 -105 CFU/ml). The signals obtained with both instruments showed high consistency. Recovery percentages of lettuce homogenate spiked with 103 , 104 , and 105 CFU/ml of L. monocytogenes obtained with the portable platform were 90.21, 90.44, and 93.69, respectively. The presented on-site applicable SWCNT-based immunosensor platform was shown to have a high potential to be used in field settings for food and agricultural applications. PRACTICAL APPLICATION: The developed immunosensor was developed for on-site detection of L. monocytogenes. The limit of detection of the sensor was 103 CFU/ml with a detection time of 10 min. In order to facilitate the requirements for effective on-site screening for food safety, the sensor was integrated into a smartphone-controlled platform, so that the bio-molecular interactions were converted into impedance signals and transmitted wirelessly to a smartphone by a hand-held EIS transducer.
Collapse
Affiliation(s)
- Bog Eum Lee
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, Hawaii, USA
| | - Taiyoung Kang
- Department of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, Hawaii, USA
| | - Daniel Jenkins
- Department of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, Hawaii, USA
| | - Yong Li
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, Hawaii, USA
| | - Marisa M Wall
- USDA-ARS Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, Hawaii, USA
| | - Soojin Jun
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, Hawaii, USA
| |
Collapse
|
10
|
So JH, Joe SY, Hwang SH, Jun S, Lee SH. Analysis of the Temperature Distribution in a Refrigerated Truck Body Depending on the Box Loading Patterns. Foods 2021; 10:foods10112560. [PMID: 34828842 PMCID: PMC8625125 DOI: 10.3390/foods10112560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/10/2021] [Accepted: 10/22/2021] [Indexed: 12/01/2022] Open
Abstract
The main purpose of cold chain is to keep the temperature of products constant during transportation. The internal temperature of refrigerated truck body is mainly measured with a temperature sensor installed at the hottest point on the body. Hence, the measured temperature cannot represent the overall temperature values of transported products in the body. Moreover, the airflow pattern in the refrigerated body can vary depending on the arrangement of loaded logistics, resulting temperature differences between the transported products. In this study, the airflow and temperature change in the refrigerated body depending on the loading patterns of box were analyzed using experimental and numerical analysis methods. Ten different box loading patterns were applied to the body of 0.5 ton refrigerated truck. The temperatures inside boxes were measured depending on the loading patterns. CFD modeling with two different turbulence models (k-ε and SST k-ω) was developed using COMSOL Multiphysics for predicting the temperatures inside boxes loaded with different patterns, and the predicted data were compared to the experimental data. The k-ε turbulence model showed a higher temperature error than the SST k-ω model; however, the highest temperature point inside the boxes was almost accurately predicted. The developed model derived an approximate temperature distribution in the boxes loaded in the refrigerated body.
Collapse
Affiliation(s)
- Jun-Hwi So
- Department of Smart Agriculture Systems, Chungnam National University, Daejeon 34134, Korea; (J.-H.S.); (S.-H.H.)
| | - Sung-Yong Joe
- Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon 34134, Korea;
| | - Seon-Ho Hwang
- Department of Smart Agriculture Systems, Chungnam National University, Daejeon 34134, Korea; (J.-H.S.); (S.-H.H.)
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA
- Correspondence: (S.J.); (S.-H.L.); Tel.: +1-808-956-8283 (S.J.); +82-42-821-6718 (S.-H.L.); Fax: +1-808-956-4024 (S.J.); +82-42-823-6246 (S.-H.L.)
| | - Seung-Hyun Lee
- Department of Smart Agriculture Systems, Chungnam National University, Daejeon 34134, Korea; (J.-H.S.); (S.-H.H.)
- Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon 34134, Korea;
- Correspondence: (S.J.); (S.-H.L.); Tel.: +1-808-956-8283 (S.J.); +82-42-821-6718 (S.-H.L.); Fax: +1-808-956-4024 (S.J.); +82-42-823-6246 (S.-H.L.)
| |
Collapse
|
11
|
You Y, Li M, Kang T, Ko Y, Kim S, Lee SH, Jun S. Application of Supercooling for the Enhanced Shelf Life of Asparagus ( Asparagus officinalis L.). Foods 2021; 10:foods10102361. [PMID: 34681410 PMCID: PMC8535308 DOI: 10.3390/foods10102361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/01/2021] [Accepted: 10/02/2021] [Indexed: 01/24/2023] Open
Abstract
Freezing extends the shelf-life of food by slowing down the physical and biochemical reactions; however, ice crystal formation can result in irreversible damage to the cell's structure and texture. Supercooling technology has the potential to preserve the original freshness of food without freezing damage. In this study, fresh asparagus was preserved in a supercooled state and its quality changes such as color, weight loss, texture, chlorophyll and anthocyanin content, and enzymatic activities (superoxide dismutase and catalase) were evaluated. The asparagus samples were successfully supercooled at -3 °C with the combination treatment of pulsed electric field (PEF) and oscillating magnetic field (OMF), and the supercooled state was maintained for up to 14 days. Asparagus spears preserved in the supercooled state exhibited lower weight loss and higher levels of quality factors in comparison to the frozen and refrigerated control samples.
Collapse
Affiliation(s)
- Youngsang You
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (Y.Y.); (M.L.); (T.K.); (Y.K.)
- Department of Food Engineering, Dankook University, Cheonan 31116, Korea
| | - Muci Li
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (Y.Y.); (M.L.); (T.K.); (Y.K.)
| | - Taiyoung Kang
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (Y.Y.); (M.L.); (T.K.); (Y.K.)
| | - Youngbok Ko
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (Y.Y.); (M.L.); (T.K.); (Y.K.)
| | - Sangoh Kim
- Department of Plant and Food Engineering, Sangmyung University, Cheonan 31066, Korea;
| | - Seung Hyun Lee
- Department of Biosystems Machinery Engineering, Chungnam National University, Daejeon 34134, Korea;
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (Y.Y.); (M.L.); (T.K.); (Y.K.)
- Correspondence:
| |
Collapse
|
12
|
Kang T, You Y, Hoptowit R, Wall MM, Jun S. Effect of an oscillating magnetic field on the inhibition of ice nucleation and its application for supercooling preservation of fresh-cut mango slices. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2021.110541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
13
|
Choi W, Min YW, Lee KY, Jun S, Lee HG. Dielectrophoresis-based microwire biosensor for rapid detection of Escherichia coli K-12 in ground beef. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109230] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
14
|
Kang T, Shafel T, Lee D, Lee CJ, Lee SH, Jun S. Quality Retention of Fresh Tuna Stored Using Supercooling Technology. Foods 2020; 9:foods9101356. [PMID: 32987948 PMCID: PMC7601904 DOI: 10.3390/foods9101356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 12/15/2022] Open
Abstract
The present study was focused on the investigation of physiochemical changes in tuna subjected to a novel supercooling preservation, which was assisted using a combination of pulsed electric fields (PEF) and oscillating magnetic fields (OMF). Fresh tuna fillets were stored without freezing at −3.2 °C for 8 days. The electrochemical impedance spectroscopy (EIS) parameter Py indicated that there was a significant difference between the frozen-thawed samples (36.3%) and fresh (46.6%) and supercooled (45.9%) samples, indicating that cell damage from ice crystal growth did not occur in the supercooled tuna sample. The microstructure observation and drip loss measurement further confirmed that the ice crystal damage was present in frozen tuna, whereas no cellular damage was found in the supercooled samples. The EIS proved its ability to distinguish between tuna samples that were frozen or chilled (i.e., refrigerated and supercooled) during storage; however, it was less sensitive in detecting the extent of spoilage. Instead, the K-value was used to evaluate tuna freshness, and the measured K-values of the refrigerated, supercooled, and frozen tuna samples after 8 days of storage were 74.3%, 26.4%, and 19.9%, respectively, suggesting that the supercooling treatment significantly preserved the tuna fillets fresh with the improved shelf-life when compared to conventional refrigeration.
Collapse
Affiliation(s)
- Taiyoung Kang
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (T.K.); (D.L.)
| | - Timothy Shafel
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA;
| | - Dongyoung Lee
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (T.K.); (D.L.)
| | - Chang Joo Lee
- Department of Food Science and Biotechnology, Wonkwang University, Iksan 54538, Korea;
| | - Seung Hyun Lee
- Department of Biosystems Machinery Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
- Department of Smart Agriculture Systems, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
- Correspondence: (S.H.L.); (S.J.); Tel.: +82-42-821-6718 (S.H.L.); +1-808-956-8283 (S.J.); Fax: +82-42-823-6246 (S.H.L.); +1-808-956-4024 (S.J.)
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI 96822, USA;
- Correspondence: (S.H.L.); (S.J.); Tel.: +82-42-821-6718 (S.H.L.); +1-808-956-8283 (S.J.); Fax: +82-42-823-6246 (S.H.L.); +1-808-956-4024 (S.J.)
| |
Collapse
|
15
|
Kang T, Hoptowit R, Jun S. Effects of an oscillating magnetic field on ice nucleation in aqueous iron‐oxide nanoparticle dispersions during supercooling and preservation of beef as a food application. J FOOD PROCESS ENG 2020. [DOI: 10.1111/jfpe.13525] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Taiyoung Kang
- Department of Molecular Biosciences and Bioengineering University of Hawaii at Manoa Honolulu Hawaii USA
| | - Raymond Hoptowit
- Department of Molecular Biosciences and Bioengineering University of Hawaii at Manoa Honolulu Hawaii USA
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences University of Hawaii at Manoa Honolulu Hawaii USA
| |
Collapse
|
16
|
Kim BS, Kang J, Jun S, Kim H, Pak K, Kim GH, Heo HJ, Kim YH. Association between immunotherapy biomarkers and glucose metabolism from F-18 FDG PET. Eur Rev Med Pharmacol Sci 2020; 24:8288-8295. [PMID: 32894535 DOI: 10.26355/eurrev_202008_22625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To assess associations between parameters derived from F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) and mRNA expression levels of immune checkpoint biomarkers such as programmed death receptor 1 (PD-1), programmed death-ligand 1 (PD-L1), cytotoxic T-lymphocyte antigen 4 (CTLA-4) as well as tumor mutation burden (TMB) in non-small cell lung cancer (NSCLC) patients. PATIENTS AND METHODS Integrated data were downloaded from Genomic Data Common Data Portal. Clinical, mRNA-seq, and whole exome-seq data of lung adenocarcinoma and squamous cell carcinoma from The Cancer Genome Atlas (TCGA) database were analyzed. TMB was defined as the total number of somatic missense mutations per megabase of the genome examined. Expression levels of PD-1, PD-L1, CTLA4 mRNA and TMB were collected. Correlations between imaging parameters of glucose metabolism and the expression levels of genomic biomarkers from cancers were evaluated. Bonferroni correction (adjusted p<0.0027) was applied to reduce type 1 error. RESULTS Of 31 NSCLC cases, 11 cases were adenocarcinoma (LUAD) and 20 were squamous cell carcinoma (LUSC). In linear regression analysis, texture parameters such as low gray-level run emphasis (LGRE, R2=0.48, p<0.0001), short run low gray-level emphasis (SRLGE, R2=0.45, p<0.0001) and long run low gray-level emphasis (LRLGE, R2=0.41, p=0.0001) derived from gray-level run length matrix (GLRLM) showed remarkable correlation with PD-L1 mRNA expression. Expression of PD-1, CTLA-4, and TMB failed to show any significant correlation with parameters of the F-18 FDG PET/CT. CONCLUSIONS Texture parameters derived from PET, known to indicate glucose uptake distribution, were correlated with expression of PD-L1 mRNA but not with expression of PD-1, CTLA-4 and TMB. Thus, tumoral heterogeneity could be a surrogate marker for the identification of PD-L1 level in NSCLC.
Collapse
Affiliation(s)
- B S Kim
- Department of Nuclear Medicine, Kosin University Gospel Hospital, University of Kosin College of Medicine, Busan, Republic of Korea.
| | | | | | | | | | | | | | | |
Collapse
|
17
|
|
18
|
Kang T, You Y, Jun S. Supercooling preservation technology in food and biological samples: a review focused on electric and magnetic field applications. Food Sci Biotechnol 2020; 29:303-321. [PMID: 32257514 PMCID: PMC7105587 DOI: 10.1007/s10068-020-00750-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/27/2020] [Accepted: 03/10/2020] [Indexed: 12/27/2022] Open
Abstract
Freezing has been widely recognized as the most common process for long-term preservation of perishable foods; however, unavoidable damages associated with ice crystal formation lead to unacceptable quality losses during storage. As an alternative, supercooling preservation has a great potential to extend the shelf-life and maintain quality attributes of fresh foods without freezing damage. Investigations for the application of external electric field (EF) and magnetic field (MF) have theorized that EF and MF appear to be able to control ice nucleation by interacting with water molecules in foods and biomaterials; however, many questions remain open in terms of their roles and influences on ice nucleation with little consensus in the literature and a lack of clear understanding of the underlying mechanisms. This review is focused on understanding of ice nucleation processes and introducing the applications of EF and MF for preservation of food and biological materials.
Collapse
Affiliation(s)
- Taiyoung Kang
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822 USA
| | - Youngsang You
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, Hawaii 96822 USA
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, Hawaii 96822 USA
| |
Collapse
|
19
|
|
20
|
Pizzurro S, Pirzio F, Jun S, Di Lieto A, Tonelli M, Agnesi A. Multi-Watt, mJ nanosecond pulses amplification in a Yb:LuLiF 4 single crystal fiber grown by micro-pulling-down. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202024305001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
21
|
Qin Y, Cai J, Ji W, Chen X, Tian L, Jun S, Wang L, He X. Intraspinal Paragonimiasis in Children: MRI Findings and Suggestions for Pathogenesis. AJNR Am J Neuroradiol 2019; 40:2166-2171. [PMID: 31727748 DOI: 10.3174/ajnr.a6296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 09/03/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND PURPOSE Intraspinal paragonimiasis is a rare entity for which imaging findings have seldom been described. The present study investigated the MR imaging features of spinal paragonimiasis, thus providing diagnostic imaging evidence and exploring the possible pathogenesis of intraspinal paragonimiasis. MATERIALS AND METHODS The clinical and imaging findings of spinal paragonimiasis in 6 children were analyzed retrospectively. Spinal MR imaging was performed in all patients, 5 of whom also underwent enhanced MR imaging. The diagnosis was confirmed by enzyme-linked immunosorbent assay in all cases and postoperative pathology in 4 cases. RESULTS All cases manifested as fusiform-shaped or beanlike masses in the extradural space in the thoracic spine. The extradural masses were connected with pleural lesions through the intervertebral foramen. The plain MR imaging scan showed mixed signals with predominant isointensity on T1WI and hyperintensity on T2WI, among which 5 (5/6) masses presented as patchy hemorrhage with hyperintensity on T1WI. On enhanced scans, all masses (5/5) showed heterogeneous marked enhancement, with thickening and enhancement in the adjacent spinal meninges (5/5). Various degrees of spinal cord compression and edema were found in 5 cases (5/6). CONCLUSIONS MR imaging is sensitive for detecting and characterizing spinal paragonimiasis. The MR imaging features of intraspinal granulomas included localization to the extradural space and thoracic segment, connections between intraspinal lesions and pleural lesions through the intervertebral foramen, and hemorrhagic foci within the mass. These findings support an intraspinal mode of paragonimiasis pathogenesis: The Paragonimus larvae migrate from the chest into the extradural space through the intervertebral foramen.
Collapse
Affiliation(s)
- Y Qin
- From the Departments of Radiology (Y.Q., J.C., L.T., S.J., L.W., X.H.)
| | - J Cai
- From the Departments of Radiology (Y.Q., J.C., L.T., S.J., L.W., X.H.)
| | - W Ji
- Neurosurgery (W.J.), Children's Hospital of Chongqing Medical University, Chongqing, China
| | - X Chen
- Outpatient Surgery (X.C.)
| | - L Tian
- From the Departments of Radiology (Y.Q., J.C., L.T., S.J., L.W., X.H.)
| | - S Jun
- From the Departments of Radiology (Y.Q., J.C., L.T., S.J., L.W., X.H.)
| | - L Wang
- From the Departments of Radiology (Y.Q., J.C., L.T., S.J., L.W., X.H.)
| | - X He
- From the Departments of Radiology (Y.Q., J.C., L.T., S.J., L.W., X.H.)
| |
Collapse
|
22
|
Lee J, Jiang Y, Hizal F, Ban GH, Jun S, Choi CH. Durable omniphobicity of oil-impregnated anodic aluminum oxide nanostructured surfaces. J Colloid Interface Sci 2019; 553:734-745. [DOI: 10.1016/j.jcis.2019.06.068] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 12/15/2022]
|
23
|
Lee K, Kim S, Jun S, Song S, Klopprogge K, Song J. Effect of HB variants on HbA1c assays in Korea. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
24
|
Han M, Lee K, Jun S, Song S, Song J. Identification of the hemoglobin variants by ultra-performance liquid chromatography - Tandem mass spectrometry. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
25
|
Kim I, Kim H, Chang W, Kim J, Park N, Youn J, Choi S, Jun S, Cho Y, Yoon H, Nam C, Han S, Hur S, Park H. Efficacy and Safety of Idarucizumab for Rapid Reversal from Dabigatran in Patients Undergoing Orthotopic Heart Transplantation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
26
|
Im C, Seo H, Jun S. The effect of number of electrodes in the multi-array tDCS - A computational study. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
27
|
Kim J, Lee H, Lee J, Jun S, Gong H, Chung Y, Kim J, Kim J. Development of New Acupotomy Device Based on Acupotomy Clinical Trials. J Acupunct Meridian Stud 2018. [DOI: 10.1016/j.jams.2018.08.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
28
|
Jun S, Dr J. Modified Hand Elevation Test as an aid in diagnosing carpal tunnel syndrome. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
29
|
Ban GH, Lee J, Choi CH, Li Y, Jun S. Nano-patterned aluminum surface with oil-impregnation for improved antibacterial performance. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.05.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
30
|
Cebricos J, Hoptowit R, Jun S. Separation of Escherichia coli K12 from contaminated tap water using a single-stage, continuous flow dielectrophoresis (DEP) device. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
31
|
Jun S. SCREENING, BRIEF INTERVENTION, AND REFERRAL TO TREATMENT (SBIRT) FOR ADOLESCENT ALCOHOL USE IN EMERGENCY DEPARTMENTS: A NATIONAL SURVEY OF PEDIATRIC EMERGENCY PHYSICIANS. Paediatr Child Health 2017. [DOI: 10.1093/pch/pxx086.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
32
|
Hizal F, Rungraeng N, Lee J, Jun S, Busscher HJ, van der Mei HC, Choi CH. Nanoengineered Superhydrophobic Surfaces of Aluminum with Extremely Low Bacterial Adhesivity. ACS Appl Mater Interfaces 2017; 9:12118-12129. [PMID: 28291321 DOI: 10.1021/acsami.7b01322] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bacterial adhesion and biofilm formation on surfaces are troublesome in many industrial processes. Here, nanoporous and nanopillared aluminum surfaces were engineered by anodizing and postetching processes and made hydrophilic (using the inherent oxide layer) or hydrophobic (applying a Teflon coating) with the aim of discouraging bacterial adhesion. Adhesion of Staphylococcus aureus ATCC 12600 (Gram-positive, spherically shaped) and Escherichia coli K-12 (Gram-negative, rod-shaped) was evaluated to the nanoengineered surfaces under both static and flow conditions (fluid shear rate of 37 s-1). Compared to a nonstructured electropolished flat surface, the nanostructured surfaces significantly reduced the number of adhering colony forming units (CFUs) for both species, as measured using agar plating. For the hydrophilic surfaces, this was attributed to a decreased contact area, reducing bacterial adhesion forces on nanoporous and nanopillared surfaces to 4 and 2 nN, respectively, from 8 nN on flat surfaces. Reductions in the numbers of adhering CFUs were more marked on hydrophobic surfaces under flow, amounting to more than 99.9% and 99.4% for S. aureus and E. coli on nanopillared surfaces, respectively. Scanning electron microscopy revealed a few bacteria found on the hydrophobic nanopillared surfaces adhered predominantly to defective or damaged areas, whereas the intact area preserving the original nanopillared morphology was virtually devoid of adhering bacteria. The greater decrease in bacterial adhesion to hydrophobic nanopillared surfaces than to hydrophilic or nanoporous ones is attributed to effective air entrapment in the three-dimensional pillar morphology, rendering them superhydrophobic and slippery, in addition to providing a minimized contact area for bacteria to adhere to.
Collapse
Affiliation(s)
- Ferdi Hizal
- Department of Mechanical Engineering, Stevens Institute of Technology , Castle Point on Hudson, Hoboken, New Jersey 07030, United States
- University of Groningen and University Medical Center Groningen , Department of Biomedical Engineering (FB40), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Natthakan Rungraeng
- Food Technology Program, School of Agro-Industry, Mae Fah Luang University , 333 Moo1, Thasud, Muang, Chiang Rai 57100, Thailand
| | - Junghoon Lee
- Department of Mechanical Engineering, Stevens Institute of Technology , Castle Point on Hudson, Hoboken, New Jersey 07030, United States
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa , 1955 East West Road, Agricultural Science Building 216, Honolulu, Hawaii 96822, United States
| | - Henk J Busscher
- University of Groningen and University Medical Center Groningen , Department of Biomedical Engineering (FB40), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henny C van der Mei
- University of Groningen and University Medical Center Groningen , Department of Biomedical Engineering (FB40), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Chang-Hwan Choi
- Department of Mechanical Engineering, Stevens Institute of Technology , Castle Point on Hudson, Hoboken, New Jersey 07030, United States
| |
Collapse
|
33
|
Mok JH, Her JY, Kang T, Hoptowit R, Jun S. Effects of pulsed electric field (PEF) and oscillating magnetic field (OMF) combination technology on the extension of supercooling for chicken breasts. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2016.10.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
34
|
Takenami T, Maeda S, Karasawa H, Mochizuki Y, Aizawa T, Jun S, Musha H, Morikawa T, Nakagawa K, Hayashi H, Motoi F, Naitoh T, Unno M. 46P Identification of novel biomarkers distinguishing pancreatic head cancer from distal cholangiocarcinoma discovered by proteomics analysis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
35
|
Jun S, Karasawa H, Suzuki T, Nakayama S, Katagiri M, Maeda S, Ohnuma S, Motoi F, Naitoh T, Unno M. 34P The expression and functional role of Cripto-1 in human colorectal cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00194-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
36
|
Jun S, Karasawa H, Suzuki T, Nakayama S, Katagiri M, Maeda S, Ohnuma S, Motoi F, Naitoh T, Unno M. 34P The expression and functional role of Cripto-1 in human colorectal cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
Sarkar S, Jun S, Rellick S, Quintana DD, Cavendish JZ, Simpkins JW. Expression of microRNA-34a in Alzheimer's disease brain targets genes linked to synaptic plasticity, energy metabolism, and resting state network activity. Brain Res 2016; 1646:139-151. [PMID: 27235866 DOI: 10.1016/j.brainres.2016.05.026] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/06/2016] [Accepted: 05/13/2016] [Indexed: 01/07/2023]
Abstract
Polygenetic risk factors and reduced expression of many genes in late-onset Alzheimer's disease (AD) impedes identification of a target(s) for disease-modifying therapies. We identified a single microRNA, miR-34a that is over expressed in specific brain regions of AD patients as well as in the 3xTg-AD mouse model. Specifically, increased miR-34a expression in the temporal cortex region compared to age matched healthy control correlates with severity of AD pathology. miR-34a over expression in patient's tissue and forced expression in primary neuronal culture correlates with concurrent repression of its target genes involved in synaptic plasticity, oxidative phosphorylation and glycolysis. The repression of oxidative phosphorylation and glycolysis related proteins correlates with reduced ATP production and glycolytic capacity, respectively. We also found that miR-34a overexpressed neurons secrete miR-34a containing exosomes that are taken up by neighboring neurons. Furthermore, miR-34a targets dozens of genes whose expressions are known to be correlated with synchronous activity in resting state functional networks. Our analysis of human genomic sequences from the tentative promoter of miR-34a gene shows the presence of NFκB, STAT1, c-Fos, CREB and p53 response elements. Together, our results raise the possibilities that pathophysiology-induced activation of specific transcription factor may lead to increased expression of miR-34a gene and miR-34a mediated concurrent repression of its target genes in neural networks may result in dysfunction of synaptic plasticity, energy metabolism, and resting state network activity. Thus, our results provide insights into polygenetic AD mechanisms and disclose miR-34a as a potential therapeutic target for AD.
Collapse
Affiliation(s)
- S Sarkar
- Center for Basic and Translational Stroke Research, Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV 26506, United States
| | - S Jun
- Center for Basic and Translational Stroke Research, Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV 26506, United States
| | - S Rellick
- Center for Basic and Translational Stroke Research, Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV 26506, United States
| | - D D Quintana
- Center for Basic and Translational Stroke Research, Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV 26506, United States
| | - J Z Cavendish
- Center for Basic and Translational Stroke Research, Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV 26506, United States
| | - J W Simpkins
- Center for Basic and Translational Stroke Research, Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV 26506, United States.
| |
Collapse
|
38
|
|
39
|
Lee I, Jun S. Simultaneous detection of E. coli K12 and S. aureus Using a Continuous Flow Multijunction Biosensor. J Food Sci 2016; 81:N1530-6. [PMID: 27096467 DOI: 10.1111/1750-3841.13307] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 03/12/2016] [Accepted: 03/20/2016] [Indexed: 11/29/2022]
Abstract
Rapid detection and identification of potentially harmful bacteria is ideal for food manufacturers to prevent foodborne illness outbreaks. Continuous monitoring method of foodborne pathogens levels and trends in food gives real-time results. Therefore, the objectives of this study were to fabricate and characterize the continuous flow multijunction biosensor for simultaneous detection of Escherichia coli K12 and Staphylococcus aureus. Junction biosensors were fabricated using gold plated tungsten wires coated with polyethylenimine and single walled carbon nanotubes. Each junction was functionalized with streptavidin and biotinylated antibodies specific to E. coli K12 and S. aureus. Then, single or 2 biosensors for each targeted analyte were connected to tubing, perpendicular to the flow direction. Pure serial diluted samples of E. coli K12 and S. aureus and microbial cocktail samples were continuously pumped at a 0.0167 mL/s into the detection zone. Changes in the electric current by biorecognition reactions between antibody and antigens were calculated. The developed junction sensor coupled with the fluidic channel showed the enhancement of the electric signal responses for detection of E. coli K12, compared to the stationary sensor. A linear regression was observed for both the E. coli and S. aureus functionalized array sensors in the detection range of 10(2) to 10(5) CFU/mL. Multiplexed detection of bacteria at the sensing levels as low as 10(2) CFU/mL for E. coli K12 and S. aureus was achieved within 2 min. Therefore, the continuous flow multijunction biosensor shows potential for rapid and continuous multiplexed detection of foodborne pathogens.
Collapse
Affiliation(s)
- Inae Lee
- Author Lee is with Dept. of Molecular Biosciences and Bioengineering, Univ. of Hawaii, Honolulu, Hawaii, 96822, U.S.A
| | - Soojin Jun
- Author Jun is with Dept. of Human Nutrition, Food, and Animal Sciences, Univ. of Hawaii, Honolulu, Hawaii, 96822, U.S.A
| |
Collapse
|
40
|
Yamada K, Choi W, Lee I, Cho BK, Jun S. Rapid detection of multiple foodborne pathogens using a nanoparticle-functionalized multi-junction biosensor. Biosens Bioelectron 2016; 77:137-43. [DOI: 10.1016/j.bios.2015.09.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/11/2015] [Accepted: 09/12/2015] [Indexed: 02/08/2023]
|
41
|
Jun S, Kim H, Nam HY. A new method for segmentation of FDG PET metabolic tumour volume using the peritumoural halo layer and a 10-step colour scale. A study in patients with papillary thyroid carcinoma. Nuklearmedizin 2015; 54:272-85. [PMID: 26429587 DOI: 10.3413/nukmed-0749-15-06] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/22/2015] [Indexed: 12/15/2022]
Abstract
AIM We observed a layer between tumour activity and background on FDG PET/CT with the 10-step colour scale and the window level set properly. We named the layer peritumoral halo layer (PHL). We performed this study to establish the reliability of metabolic tumor volume (MTV) segmentation using PHL (MTV(PHL)) in patients with papillary thyroid carcinoma. PATIENTS, METHODS Of a total of 140 papillary thyroid carcinoma (PTC) patients, 70 (50.0%) had FDG-avid PTC. In these patients, MTV(PHL), MTV segmented according to fixed 50% SUVmax (MTV(50%)), and fixed SUV with 2.5 to 4.0 (MTV(2.5) to MTV(4.0)) were compared with pathologic tumour volume (PTV). The absolute percentage difference between MTV(PHL) and PTV was compared in micropapillary carcinoma (MPTC) and non-micropapillary carcinoma (non-MPTC) subgroups. The % SUVmax and SUV thresholds of MTV(PHL) were compared with tumour SUVmax. RESULTS Among the MTVs, MTV(50%) was not correlated with PTV (r = -0.16, p = 0.182) and was not reliable according to the Bland-Altman plot. Although MTV(2.5), MTV(3.0), MTV(3.5), and MTV(4.0) correlated with PTV (r = 0.85, 0.86, 0.87, and 0.87, respectively; p < 0.001), these MTVs were not reliable on Bland-Altman analyses. MTV(PHL) was significantly correlated with PTV (r = 0.80, p < 0.001), and the Bland-Altman plot did not show systemic error. The MTV(PHL) was more accurate in non-MPTC than in MPTC (p < 0.001), and the absolute % difference was smaller as PTV became larger (σ = -0.65, p < 0.001). The MTV(PHL) thresholds had correlations with SUVmax (% SUVmax threshold: σ = -0.87, p < 0.001; SUV threshold: r = 0.88, p < 0.001). CONCLUSIONS MTV(PHL) was more reliable than MTV(%SUVmax) or MTV(SUV). The reliability of MTV(PHL) improved with larger PTVs. The threshold of the MTV(PHL) was naturally altered by PHL according to SUVmax.
Collapse
Affiliation(s)
| | | | - H-Y Nam
- Hyun-Yeol Nam, M.D., Samsung Changwon Hospital, 158, Paryong-ro, Masan Hoewon-gu, Changwon-si, Korea, 630-723, Tel. +82/55/290-65 93; Fax -55 98,
| |
Collapse
|
42
|
Lee SH, Choi W, Kim CT, Jun S. Development of a dual cylindrical microwave and ohmic combination heater for minimization of thermal lags in the processing of particulate foods. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.04.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
43
|
|
44
|
Qianqian Y, Yong Y, Zhaodong C, Yonghui T, Jun S, Yuzheng H. Differential Protein Expression between Type 1 Diabetic Cataract and Age-Related Cataract Patients. Folia Biol (Praha) 2015; 61:74-80. [PMID: 26333124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Diabetes has become one of the major diseases affecting human health. Diabetic cataracts (DCs) are considered a common complication in diabetic patients. The present study investigated differences in lens proteomic profiles between DCs and age-related cataracts (ACs) to determine the mechanism underlying the formation of DCs. Intrasurgical samples were collected from eight DC patients and 12 AC patients, and lens proteins were extracted by lysis and separated using two-dimensional gel electrophoresis (2-DE). The electrophoretic bands were analysed using PD-Quest software 8.0.1. Differentially expressed proteins were identified by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) and peptide mass fingerprinting combined with protein database searching. In the 2-DE maps, the DC and AC lens proteins migrated in the region of pH 5-9 with a relative molecular weight (RMW) of 14-97 kDa, whereas the RMW of more abundant crystallin was 20-31 kDa. Approximately three protein spots with differential intensity were detected. Two crystallin proteins (αB and βB1) were identified using MALDI-TOF-MS. Proteomic analysis of the crystalline humour is feasible, and the proteins can be well separated; moreover, differentially expressed lens proteins can be analysed using 2-DE and mass spectrometry to compare DC and AC. The present results indicate that the αB and βB1 crystallins may accelerate the development of DCs. These techniques offer new avenues for mechanistic evaluation and future prevention or therapy of DCs.
Collapse
Affiliation(s)
- Y Qianqian
- Department of Ophthalmology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - Y Yong
- Department of Ophthalmology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - C Zhaodong
- Department of Ophthalmology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - T Yonghui
- The Key Lab of Technology on Parasitic Diseases Prevent and Control, Ministry of Health; Jiangsu Institute of Parasitic Diseases, Wuxi, China
| | - S Jun
- Department of Ophthalmology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - H Yuzheng
- The Key Lab of Technology on Parasitic Diseases Prevent and Control, Ministry of Health; Jiangsu Institute of Parasitic Diseases, Wuxi, China
| |
Collapse
|
45
|
Chee G, Shafel T, Park SH, Jun S. Pulsed-CO2
Laser Beam Photothermal Technology Combined with Conjugated Gold Nanoparticles for the Selective Elimination of Surface E
scherichia Coli
K12 from Fresh Fruits. J FOOD PROCESS ENG 2014. [DOI: 10.1111/jfpe.12174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Grace Chee
- Department of Molecular Biosciences and Bioengineering; University of Hawaii; Honolulu HI
| | - Timothy Shafel
- Department of Human Nutrition Food and Animal Sciences; University of Hawaii; Honolulu HI 96822
| | - Sung Hee Park
- Department of Human Nutrition Food and Animal Sciences; University of Hawaii; Honolulu HI 96822
| | - Soojin Jun
- Department of Human Nutrition Food and Animal Sciences; University of Hawaii; Honolulu HI 96822
| |
Collapse
|
46
|
Yamada K, Kim CT, Kim JH, Chung JH, Lee HG, Jun S. Single walled carbon nanotube-based junction biosensor for detection of Escherichia coli. PLoS One 2014; 9:e105767. [PMID: 25233366 PMCID: PMC4169404 DOI: 10.1371/journal.pone.0105767] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 07/28/2014] [Indexed: 12/18/2022] Open
Abstract
Foodborne pathogen detection using biomolecules and nanomaterials may lead to platforms for rapid and simple electronic biosensing. Integration of single walled carbon nanotubes (SWCNTs) and immobilized antibodies into a disposable bio-nano combinatorial junction sensor was fabricated for detection of Escherichia coli K-12. Gold tungsten wires (50 µm diameter) coated with polyethylenimine (PEI) and SWCNTs were aligned to form a crossbar junction, which was functionalized with streptavidin and biotinylated antibodies to allow for enhanced specificity towards targeted microbes. In this study, changes in electrical current (ΔI) after bioaffinity reactions between bacterial cells (E. coli K-12) and antibodies on the SWCNT surface were monitored to evaluate the sensor's performance. The averaged ΔI increased from 33.13 nA to 290.9 nA with the presence of SWCNTs in a 108 CFU/mL concentration of E. coli, thus showing an improvement in sensing magnitude. Electrical current measurements demonstrated a linear relationship (R2 = 0.973) between the changes in current and concentrations of bacterial suspension in range of 102–105 CFU/mL. Current decreased as cell concentrations increased, due to increased bacterial resistance on the bio-nano modified surface. The detection limit of the developed sensor was 102 CFU/mL with a detection time of less than 5 min with nanotubes. Therefore, the fabricated disposable junction biosensor with a functionalized SWCNT platform shows potential for high-performance biosensing and application as a detection device for foodborne pathogens.
Collapse
Affiliation(s)
- Kara Yamada
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, Hawaii, United States of America
| | - Chong-Tai Kim
- Korea Food Research Institute, Seongnam-si, Republic of Korea
| | - Jong-Hoon Kim
- Department of Mechanical Engineering, University of Washington, Seattle, Washington, United States of America
| | - Jae-Hyun Chung
- Department of Mechanical Engineering, University of Washington, Seattle, Washington, United States of America
| | - Hyeon Gyu Lee
- Department of Food and Nutrition, Hanyang University, Seoul, Republic of Korea
| | - Soojin Jun
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, Hawaii, United States of America
- * E-mail:
| |
Collapse
|
47
|
Yoon SH, Rungraeng N, Song W, Jun S. Superhydrophobic and superhydrophilic nanocomposite coatings for preventing Escherichia coli K-12 adhesion on food contact surface. J FOOD ENG 2014. [DOI: 10.1016/j.jfoodeng.2014.01.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
48
|
Chee G, Rungraeng N, Han JH, Jun S. Electrochemical impedance spectroscopy as an alternative to determine dielectric constant of potatoes at various moisture contents. J Food Sci 2014; 79:E195-201. [PMID: 24446887 DOI: 10.1111/1750-3841.12335] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 10/31/2013] [Indexed: 11/27/2022]
Abstract
The dielectric (DE) properties, specifically the DE constant (ε') and loss factor (ε''), were measured for vacuum-dried and freeze-dried potato samples at a microwave frequency of 2.45 GHz over a range of different moisture contents (MCs) using a DE probe and also a 2-probe electrochemical impedance spectroscopy (EIS). Third-order polynomial models (ε' = f₁(MC); and ε'' = f₂(MC)) at room temperature were developed for regression analysis. Additionally, at various temperatures (T), biphasic 3rd-order polynomial models (ε' = f₁(MC, T); and ε'' = f₂(MC, T)) were obtained to determine ε' and ε'' as a function of MC and T using measured data. The vacuum-dried potato sample showed a good fitness of ε' and ε'' (R² = 0.95 and 0.96, respectively) to the regression model with the range of MCs from 18% to 80% (w/w), while the freeze-dried potato sample showed a good fitness of ε' and ε'' to the 1st-phase regression model with MC < 50% w/w (R² = 0.95 and 0.96, respectively) and the 2nd-phase regression model with MC > 50% w/w (R² = 0.94 to 0.96). EIS measurements were also used to obtain correlation impedances for ε' and ε'' determined by the DE probe method. The resulted regression analysis meets the demands for simple, rapid, and accurate assessment for transient values of ε' and ε'' of food products during dehydration/drying processes. The EIS method was verified to be a successful alternative to direct measurements of ε' and ε''.
Collapse
Affiliation(s)
- Grace Chee
- Dept. of Molecular Biosciences and Bioengineering, Univ. of Hawaii, Honolulu, Hawaii 96822, U.S.A
| | | | | | | |
Collapse
|
49
|
Choi Y, Ju S, Chae SH, Jun S, Park SM, Lee S, Lee HW, Ji CH. Low Frequency Vibration Energy Harvester Using Spherical Permanent Magnet with Non-uniform Mass Distribution. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/476/1/012123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
50
|
Chae SH, Ju S, Choi Y, Jun S, Park SM, Lee S, Lee HW, Ji CH. Electromagnetic Vibration Energy Harvester Using Springless Proof Mass and Ferrofluid as a Lubricant. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/476/1/012013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|