Interaction of amino acids with nanoplastic traces and their effect on Staphylococcus aureus


Saygin H., Baysal A.

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, vol.56, no.11, pp.1253-1263, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 11
  • Publication Date: 2021
  • Doi Number: 10.1080/10934529.2021.1980308
  • Journal Name: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Compendex, EMBASE, Environment Index, Greenfile, INSPEC, MEDLINE, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.1253-1263
  • Keywords: Biomolecules, microplastics, pathogens, polymer degradation, weathering, EXTRACELLULAR POLYMERIC SUBSTANCES, MICROPLASTICS, ADSORPTION, PARTICLES, BACTERIA, BIOFILM, WATER
  • Istanbul Technical University Affiliated: No

Abstract

In this study, we reported the interaction between plastic traces and vital amino acids (L-homocysteine, L-valine, and L-lysine) in an aqueous system and characterized this interaction by Fourier transform infrared spectroscopy and Scanning electron microscopy with energy-dispersive X-ray spectroscopy studies. Bacterial activity and biofilm formation and their characteristics of non-treated and amino acid-treated plastic traces was tested against the Staphylococcus aureus bacterial pathogen. The surface results showed that the carbonyl groups and oxygen to carbon ratios were increased, and the attachment of nitrogen- and sulfur-related substances on the plastic surface occurred by the homocysteine over time. Plastic traces showed particle surface deformation using the main functional groups (e. g. alkyne-alkene, vinyl, secondary alcohols, alkane-methylene) with the increasing lysine treatment; however, decreased oxygen to carbon ratio showed particle anti-aging. The most common functional groups were primarily deformed with the longer exposure to valine. The bacterial activity results showed that the Staphylococcus aureus activities were not primarily changed by the amino acid treatment compared to the non-treated plastic traces. However, amino acid treated plastic traces induced the biofilm formation and its characteristic due to surface deformation of functional groups and alteration of new substances on plastic traces.