Kiseok Han

ORCID: 0009-0008-0421-8513
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Research Areas
  • Nanoparticles: synthesis and applications
  • Microbial Metabolites in Food Biotechnology
  • Polysaccharides and Plant Cell Walls
  • Nanocomposite Films for Food Packaging
  • Probiotics and Fermented Foods
  • Bone Tissue Engineering Materials
  • Essential Oils and Antimicrobial Activity
  • Graphene and Nanomaterials Applications
  • Nanoparticle-Based Drug Delivery
  • Seaweed-derived Bioactive Compounds
  • Food Quality and Safety Studies
  • Advanced Nanomaterials in Catalysis
  • Fungal Biology and Applications
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Polymer Surface Interaction Studies
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Facial Trauma and Fracture Management
  • Medicinal plant effects and applications
  • Plant and fungal interactions
  • Antimicrobial Peptides and Activities
  • Orthopedic Infections and Treatments
  • Engineering Applied Research
  • Plant Pathogens and Fungal Diseases
  • Protein Hydrolysis and Bioactive Peptides
  • Plant-Microbe Interactions and Immunity

Kangwon National University
2007-2025

A total of sixteen bacterial strains were isolated and identified from the fourteen types Korean fermented foods that evaluated for their in vitro probiotic potentials. The results showed highest survivability Bacillus sp. compared to Lactobacillus simulated gastric pH, it was found be maximum B. inaquosorum KNUAS016 (8.25 ± 0.08 log10 CFU/mL) minimum L. sakei KNUAS019 (0.8 0.02 at 3 h incubation. Furthermore, brevis KNUAS017 also had survival rates 6.86 5.37 0.01 CFU/mL, respectively, a...

10.3390/ijms231710062 article EN International Journal of Molecular Sciences 2022-09-02

A total of 126 crossbred weanling pigs (average body weight 6.3±0.3 kg) were used to investigate the effect chito- oligosaccharide (COS) on growth performance, nutrient digestibility, pH gastro-intestinal tract (GI), intestinal and fecal microflora young piglets.Pigs allocated three dietary treatments based gender in a single factorial arrangement.Treatments control (No COS), T1 (0.2% COS during starter (6-13 0.1% grower (13-30 phases, T2 (0.4% 0.3% respectively.Each treatment had 3...

10.5713/ajas.2007.556 article EN cc-by Asian-Australasian Journal of Animal Sciences 2007-01-24

Bacterial infections can lead to the formation of chronic wounds and delay wound-healing process. Therefore, it is important explore safe efficient antimicrobial agents that have biocompatible properties. In this study, novel starch-fabricated silver nitroprusside nanoparticles (S-AgNP NPs) were prepared for applications. The study showed S-AgNP NPs are spherical, with an average size 356 ± 22.28 d. nm zeta potential -27.8 2.80 mV, respectively. Furthermore, FTIR XRD results functional...

10.3390/antiox13020154 article EN cc-by Antioxidants 2024-01-25

In the present study, exopolysaccharides (EPS-1, EPS-2, and EPS-3) were extracted from Lactobacillus graminis, their chemical compositions, bioactivities, cytotoxicity comprehensively studied. A higher yield was observed for EPS-1 EPS-2 with 14.38% 9.24%, respectively. The composition in samples studied using FT-IR analysis. (1 mg/mL) showed antioxidant activities 34.5 ± 6.6% 93.6 2.3% of DPPH ABTS radical scavenging, cellular assay, protected oxidative stress-mediated damage AAPH-treated...

10.3390/polysaccharides6020033 article EN cc-by Polysaccharides 2025-04-11

<title>Abstract</title> <italic>Helichrysum odoratissimum</italic> is commonly used in the treatment of diabetes, skin wounds, and eczema. We determined its phytochemical composition evaluated antioxidant, anti-tyrosinase, antidiabetic, wound healing, cytoprotective activities. The antioxidant effect was tested by DPPH, ABTS+, cupric, ferric methods. anti-tyrosinase action using tyrosine L-DOPA as substrates, while antidiabetic studied α-amylase α-glucosidase assays. activity via cell...

10.21203/rs.3.rs-6598546/v1 preprint EN Research Square (Research Square) 2025-05-07

Background: Cyclophosphamide (CP) chemotherapy is commonly associated with various side effects. The development of an effective therapy capable counteracting these effects great interest. Objectives: We evaluated the a novel polyherbal formulation (PHF) on CP cytotoxicity in TM3 cells and fictive ejaculation rats, determined its possible mechanism. Methods: phytochemical analysis PHF was by GC-MS. Various oxidative stress-related parameters (DPPH, ABTS+, CUPRAC, FRAP, MMP, DCF-DA)...

10.3390/ph18060803 article EN cc-by Pharmaceuticals 2025-05-27

In the present study, a total of eight Enterococcus faecium (OQ940301, OQ940302, OQ940303, OQ940304, OQ940305, OQ940308, OQ940309, and OQ940310) were isolated from soybean paste, traditional Korean fermented food, evaluated for their probiotic properties. The results showed that all E. strains survived in simulated human gastrointestinal conditions (4.1–5.59 log10 CFU/mL). addition, range auto-aggregation was 5–25%, hydrophobicity around 94%, it exhibited significant co-aggregation ability...

10.3390/fermentation9080760 article EN cc-by Fermentation 2023-08-14

The silver nanoparticles (AgNPs) were synthesized using quercetin (Qn) for enhanced antioxidant and antibacterial activity. quercetin-mediated (Qn-AgNPs) characterized by different analytical methods. Qn-AgNPs showed maximum absorbance at 420 nm in the UV-visible spectrum. hydrodynamic size of 92.91 ± 0.65 d.nm, polydispersity index (PDI) 0.27 0.006, negative zeta potential −31.36 0.28 mV measured Qn-AgNPs. TEM analysis indicated that found to be homogeneous spherical particles without...

10.3390/coatings12091292 article EN Coatings 2022-09-02

The SMART is a small modular nuclear reactor that was developed at the Korea Atomic Energy Research Institute and in process of being evaluated using intense validation tests for future construction Saudi Arabia. system design based on accidents include station black out, which can assure integrity fuels by removing decay heat through natural circulation. Facility to Investigate Natural Circulation (FINCLS) constructed understand single- two-phase circulation phenomena simplified loop. Two...

10.5293/kfma.2019.22.1.041 article EN The KSFM Journal of Fluid Machinery 2019-02-28

Polysaccharides are abundantly present in fungi and gaining recognition for their exceptional bioactivities. Hence, the study aimed to extract intracellular polysaccharides (IPS-1 IPS-2) from endophytic Penicillium radiatolobatum compare physicochemical bioactive attributes. The monosaccharide composition analysis revealed existence of galactose, glucose, mannose both IPS, while a trace amount xylose was found IPS-1. Further, FT-IR, 1H NMR, 13C NMR suggested that IPS-2 mainly composed...

10.3390/molecules28155788 article EN cc-by Molecules 2023-07-31
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