Sung Sik Jang

ORCID: 0000-0002-1252-8676
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About
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Research Areas
  • Listeria monocytogenes in Food Safety
  • Microbial Inactivation Methods
  • Probiotics and Fermented Foods
  • Viral gastroenteritis research and epidemiology
  • Bacillus and Francisella bacterial research
  • Essential Oils and Antimicrobial Activity
  • Food Quality and Safety Studies
  • Tea Polyphenols and Effects
  • Gut microbiota and health
  • Identification and Quantification in Food
  • Infection Control and Ventilation
  • Collagen: Extraction and Characterization
  • Phytochemistry and Biological Activities
  • Microbial Metabolism and Applications
  • Enterobacteriaceae and Cronobacter Research
  • Effects of Environmental Stressors on Livestock
  • Salmonella and Campylobacter epidemiology
  • Biopolymer Synthesis and Applications
  • Antimicrobial Peptides and Activities
  • melanin and skin pigmentation
  • Protein Hydrolysis and Bioactive Peptides
  • Plant Pathogenic Bacteria Studies
  • Cholinesterase and Neurodegenerative Diseases
  • Infection Control in Healthcare
  • Ruminant Nutrition and Digestive Physiology

BC Centre for Disease Control
2021-2022

Korea Yakult (South Korea)
2014-2019

Seoul National University
2005-2009

Dongguk University
2005

Sungkyunkwan University
2005

University of Hawaiʻi at Mānoa
2005

Beta-amyloid (betaA)-induced oxidative toxicity on neuronal cells is a principal route in Alzheimer's disease (AD), and its occurs after fibril formation. Inhibitory or promoting effects of naturally occurring compounds betaA formation were evaluated. Among 214 tested compounds, curcuminoids, flavone type flavonoids, naphthoquinones shown to be potent inhibitors fibrilization. The addition the curcumin, demethoxycurcumin, bisdemethoxycurcumin strongly inhibited Flavonoids such as quercetin,...

10.1021/jf051985c article EN Journal of Agricultural and Food Chemistry 2005-09-30

Temperature increases due to climate change induce heat stress in livestock, resulting economic losses for farmers. This study investigated the physiological responses of Hanwoo cattle stress, and effects on vaginal microbiome. Four cows (mean weight: 380.3 ± 37.5 kg, parity: 2.5 1.0) were allocated two groups: (temperature-humidity index (THI) 86: 33 °C, 70% humidity) no (THI 67: 20 60% humidity). The exposed these conditions 15 days, was repeated twice with same cohort animals, ensuring...

10.4314/sajas.v54i6.05 article EN cc-by South African Journal of Animal Science 2025-01-27

Listeria monocytogenes remains a threat to the food system and has led numerous foodborne outbreaks worldwide. L. can establish itself in production facilities by adhering surfaces, resulting increased resistance environmental stressors. The aim of this study was evaluate adhesion ability at 8 °C analyse associations between observed phenotypes genetic factors such as internalin A (inlA) genotypes, stress survival islet 1 (SSI-1) genotype, clonal complex (CC). isolates (n = 184) were grown...

10.1016/j.fm.2021.103915 article EN cc-by-nc-nd Food Microbiology 2021-09-23

The virucidal activities of 11 prepared disinfectant solutions (active ingredients household sanitizers) and 10 sanitizers against bacteriophage MS2 on plastic stainless steel surfaces were studied. Among the sanitizers, 70-90% ethanol ethanol-based disinfectants resulted in 1-2.5 log PFU/mL reductions both surfaces. 70% isopropanol isopropanol-based formula reduced by 0.7-1.5 Other disinfectants, containing 0.1% benzalkonium chloride (BAC), 0.5% hydrogen peroxide, or 4% acetic acid, showed...

10.1016/j.crfs.2022.01.004 article EN cc-by-nc-nd Current Research in Food Science 2022-01-01

Obesity is a major health issue worldwide, and associated with many diseases including type 2 diabetes. In this study, we evaluated the anti-obesity effects of combinations two lactic acid bacteria (LAB), Lactobacillus curvatus HY7601 plantarum KY1032, Cinnamomi Ramulus (CR) extract, explored mechanism through which they modulate gut microbiota using diet-induced obese mice. Male C57BL/6J mice were randomly divided into five groups that received high-fat diet (HFD), HFD LAB (HFD+LAB), CR...

10.3746/pnf.2019.24.2.136 article EN Preventive Nutrition and Food Science 2019-06-30

To develop a new method for identification of Listeria monocytogenes genetically similar to clinical isolates, single-nucleotide polymorphism (SNP) typing and multi-locus sequence (MLST) 126 isolates L. from environmental samples were performed based on analysis parts four genes (hlyA, clpC, inlA, plcA). Based the sequences in this study, SNP showed that hlyA, plcA categorized into 9, 14, 17, 21 types, respectively. MLST grouped 35 types including 12 isolates. Out those, found food or In...

10.3136/fstr.14.557 article EN Food Science and Technology Research 2008-01-01

In addition to intestinal balance, probiotics are known have beneficial effects on skin inflammation, metabolic diseases, and emotions. Previously, we reported the anti-aging of Lactobacillus plantarum HY7714 (HY7714) in a clinical trial. To prove protective through tight junction (TJ), investigated intestines tumor necrosis factor (TNF)-α induced TJ defects Caco-2 cells. Specifically, 24 h treatment with restored decreased expression zonula occludens-1, occludin, claudin-1 compared...

10.3746/pnf.2019.24.1.64 article EN Preventive Nutrition and Food Science 2019-03-31

Cudrania tricuspidata has been used in East Asia as a folk medicine for symptoms such inflammation, allergy, and gastritis. Administration of C. extract to pylori-ligated rat stomachs reduces gastric acid secretion alleviates esophagus damage caused by reflux. Therefore, this study we aimed investigate whether extracts inhibit reflux esophagitis blocking H2 histamine receptor (H2R). Dimaprit, H2R specific agonist, induced intracellular cyclic adenosine monophosphate (cAMP) production U937...

10.3746/pnf.2019.24.2.159 article EN Preventive Nutrition and Food Science 2019-06-30

Kombucha products are now a common, and popular beverage. Increasingly, beverages outpacing popularity of other carbonated on the market, such as soda pop. This increase is seen by many positive change consumer interests, has much less sugar content than pop alternatives. However, fermented beverages, therefore apt to contain ethanol, which may be hazard for certain at risk populations. study aims investigate how information provided product labels or not allow increased control making an...

10.47339/ephj.2021.191 article EN BCIT Environmental Public Health Journal 2022-08-25

가을철에 태어난 한우 암송아지 36두를 방목전 . 후의 농후사료 급여수준에 따라 4개 처리(T1: 체중의 0.5%, T2: 1.0%, T3: 1.5%, T4 : 2.0%)를 두어 방목기 195일을 포함한 426일간 사양 시험한 결과를 요약하면 다음과 같다. 1) 전기간의 일당증체량은 T4, T3, T2 및 T1이 각각 0.501, 0.450, 0.403 0.348kg으로 후 사사기의 급여수준이 증가할수록 높았으며, 방목기의 육성기의 1.0%일 때가 가장 높았다. 2) 공시기간 동안 kg 증체에 소요된 TDN량은 8.50<TEX>${\sim}$</TEX>8.70kg(평균 8.61kg)이었고, T1, T2의 순으로 사료이용성이 방목기간의 7.99<TEX>${\sim}$</TEX>10.96kg(평균 9.22kg)으로 방목전의 그리고 전기간동안 농후사료에 대한 조사료 비율은 49.6<TEX>${\sim}$</TEX>68.2%(평균 58.5%)이었다. 3) 체중 225kg에 도달되는...

10.5187/jast.2003.45.6.975 article EN Journal of Animal Science and Technology 2003-12-31

Listeria monocytogenes remains a threat to the food system and has led numerous foodborne outbreaks worldwide. L. can establish itself in production facilities by adhering surfaces, resulting increased resistance environmental stressors. The aim of this study was evaluate adhesion ability at 8°C analyse associations between observed phenotypes genetic factors such as internalin A (inlA) genotypes, stress survival islet 1 (SSI-1) genotype, clonal complex (CC). isolates (n=184) were grown 100%...

10.2139/ssrn.3880251 article EN SSRN Electronic Journal 2021-01-01
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