Felmer S. Latayada

ORCID: 0009-0009-3974-3905
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About
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Research Areas
  • Phytochemistry and biological activities of Ficus species
  • Polyamine Metabolism and Applications
  • Phytochemistry and Biological Activities
  • Crystallization and Solubility Studies
  • Polydiacetylene-based materials and applications
  • Advanced Chemical Sensor Technologies
  • Melamine detection and toxicity
  • X-ray Diffraction in Crystallography
  • Irrigation Practices and Water Management
  • Psidium guajava Extracts and Applications
  • Advanced Cellulose Research Studies
  • Electrospun Nanofibers in Biomedical Applications
  • Dye analysis and toxicity
  • Natural product bioactivities and synthesis
  • Plant Pathogenic Bacteria Studies
  • Microplastics and Plastic Pollution
  • Hibiscus Plant Research Studies
  • Biosensors and Analytical Detection
  • Traditional and Medicinal Uses of Annonaceae
  • Surface Modification and Superhydrophobicity
  • Plant Pathogens and Fungal Diseases
  • Advanced Nanomaterials in Catalysis
  • Advanced biosensing and bioanalysis techniques
  • Marine and Coastal Ecosystems
  • Healthcare and Environmental Waste Management

Caraga State University
2017-2025

This study examines the perceived health impacts of a mining company on residents Libjo, Dinagat Islands, Philippines, addressing critical research gap in understanding activities underrepresented regions. The operations were examined using qualitative approach, employing semi-structured interviews. interview instrument was developed to investigate how impact key determinants, such as water quality, sanitation, income, employment, infrastructure, education, and women’s empowerment. conducted...

10.3390/ijerph22030365 article EN International Journal of Environmental Research and Public Health 2025-03-02

Microplastics have garnered attention for their ubiquitous presence across various ecosystems, yet investigations into occurrence in mangrove environments, particularly the Philippines, remain minimal and increasingly necessary. This study seeks to establish a foundational understanding of microplastic distribution Philippine forests, with special focus on Butuan Bay. Surface water sediment samples were collected from habitats City, Buenavista, Nasipit along Bay, Southern Philippines....

10.32526/ennrj/23/20240122 article EN cc-by-nc Environment and Natural Resources Journal 2025-03-07

Histamine is a well-known biogenic amine (BA) that often associated with allergic reactions and significant cause of foodborne illnesses resulting from the consumption spoiled food. Detecting histamine essential for maintaining food safety standards preserving quality. In this work, we developed simple, low-cost, rapid colorimetric method detecting histamine. Gold nanoparticles (AuNPs) different sizes (16, 25, 40 nm) were synthesized by using citrate reduction method. The particle size was...

10.1021/acsomega.4c02023 article EN cc-by ACS Omega 2024-07-22

Abstract A straightforward approach to recycle waste expanded polystyrene (EPS) foam produce (PS) microfibers using the improvised centrifugal spinning technique is demonstrated in this work. typical benchtop centrifuge was and used as a device. The obtained PS were characterized for their potential application oil adsorption. Fourier transform infrared spectroscopy results revealed similarity on transmission bands of EPS suggesting preservation foam’s chemical composition after process....

10.1186/s44147-021-00030-y article EN cc-by Journal of Engineering and Applied Science 2021-11-09

Histamine is among the biogenic amines that are formed during microbial decarboxylation of amino acids in various food products, posing a significant threat to both safety and human health. Herein, we present one-step synthesis PEGylated gold nanoparticles (PEG-AuNPs) for rapid, simple, cost-effective colorimetric histamine detection. PEG-AuNPs' surface plasmon resonance (SPR) range at 520-530 nm with hydrodynamic size distribution 20-40 nm. Fourier transform infrared (FT-IR) spectra...

10.1021/acsomega.3c10050 article EN cc-by-nc-nd ACS Omega 2024-03-13

Histamine, a primary biogenic amine (BA) generated through the decarboxylation of amino acids, concentration increases in protein-rich foods during deterioration. Thus, its detection plays crucial role ensuring food safety and quality. This study introduces an innovative approach involving direct integration dopamine onto gold nanoparticles (DCt-AuNP), aiming at rapid histamine colorimetric detection. Transmission electron microscopy revealed aggregation uniformly distributed spherical...

10.1021/acsomega.3c10123 article EN cc-by ACS Omega 2024-04-02

Organic dyes used in the food and textile industries are primary sources of environmental contamination due to their high toxicity nonbiodegradability. This paper describes synthesis cellulose nanocrystals/zinc oxide (CNC/ZnO) nanocomposite via sol-gel method. Various characterization techniques such as FTIR spectroscopy, UV-Vis FESEM-EDX analysis were done. analyses initially confirmed formation CNC/ZnO nanocomposites. showed a fiber-like structure with agglomerated particles on CNC-ZnO...

10.22146/ajche.72331 article EN ASEAN Journal of Chemical Engineering 2022-06-30

Pili nut production in the Philippines has grown steadily, but it faces significant challenges from pests and diseases, notably kernel rot. Yield losses due to this pathogen are still not measured, damage could extend purple immature dried postharvest nuts. Therefore, there is a pressing need for safe, effective, environmentally friendly control measures. This study reports on successful formulation of various Ionic Liquid-loaded Eucalyptus Essential Oil Nanoemulsions (IL-EEONE) potential...

10.14416/j.asep.2024.07.004 article EN Applied Science and Engineering Progress 2024-07-05

Spermine, a key biogenic amine indicating food freshness, is typically detected using costly and time-consuming chromatographic methods. This study introduces more efficient, eco-friendly alternative—a label-free colorimetric sensing platform using...

10.1039/d4sd00320a article EN cc-by-nc Sensors & Diagnostics 2024-01-01
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