Publications by authors named "Maria Esther Macias Rodriguez"

Fish aquaculture has increased but also disease problems related to it, along with antimicrobial resistance. The use of medicinal plants containing phytochemicals with antimicrobial, antioxidant, and immunomodulatory activities has been proposed. In this study, C.

View Article and Find Full Text PDF

The consumption of avocados and their products has been linked to outbreaks of illness caused by and . These pathogens have been isolated from avocados collected from farms and markets. After contact with the avocado epicarp, the cells of and can become loosely attached (LA) by suspension in a film of water and attraction by electrostatic forces, or strongly attached (SA) by physical and irreversible attachment mechanisms.

View Article and Find Full Text PDF

Poultry is commonly infected by different bacteria and parasites in the environment, resulting in increased morbidity and mortality, but immunostimulants have been enhancing non-specific defense mechanisms conferring laying hens' protection. For this purpose, the pulp of yellow (Pouteria campechiana), white (Casimiroa edulis), and black (Diospyros digyna) sapotes were nanoencapsulated (YWB-SN) and evaluated in laying hens' peripheral blood leukocytes to test their addition to the experimental diets at a concentration of 0.5% (5g/kg of dry food) for 1 month (with two samples at days 15 and 30).

View Article and Find Full Text PDF

YMnO is a P-type semiconductor with a perovskite-type structure (ABO). It presents two crystalline systems: rhombohedral and hexagonal, the latter being the most stable and studied. In the hexagonal system, Mn ions are coordinated by five oxygen ions forming a trigonal bipyramid, and the Y ions are coordinated by five oxygen ions.

View Article and Find Full Text PDF

Due to the current concerns against opportunistic pathogens and the challenge of antimicrobial resistance worldwide, alternatives to control pathogen growth are required. In this sense, this work offers a new nanohybrid composed of zinc-layered hydroxide salt (Simonkolleite) and thymol for preventing bacterial growth. Materials were characterized with XRD diffraction, FTIR and UV-Vis spectra, SEM microscopy, and dynamic light scattering.

View Article and Find Full Text PDF

Red seaweed , an underexploited algae species, was used as a potential source for the obtaining of carrageenan. Seaweed was treated under alkaline conditions using ultrasound alone or combined with conventional procedures, to improve the yield extraction. Color, syneresis behavior, water retention capacity, and functional groups of the gelling and non-gelling fractions of carrageenan were determined; these properties were compared with those of commercial carrageenans named A and B.

View Article and Find Full Text PDF
Article Synopsis
  • Cp. is a major cause of foodborne illness in humans, mainly associated with meat and poultry products, and can be found in various environmental sources like litter and feces.
  • The strains of Cp. produce over 20 toxins and enzymes that contribute to necrotic enteritis (NE), impacting the gut's integrity and affecting immune responses and gut bacteria.
  • The rise in NE cases in broilers correlates with the ban on antibiotic growth promoters, prompting research into alternative control measures such as dietary changes, probiotics, and vaccines, although further investigation into the disease's pathology is necessary for more effective prevention.
View Article and Find Full Text PDF

The use of antimicrobial agents within a matrix, specifically layered compounds, is of growing interest for reducing contamination due to food borne pathogens and deteriorative microorganisms, one of the main health problems worldwide. In this study, zinc layered hydroxide nanoparticles were synthesized as a matrix for nisin immobilization. Layered materials were characterized by X-ray diffraction, Fourier-Transform Infrared and Ultra Violet-Visible spectra, Scanning Electron Microscopy, and by Thermogravimetric Analysis.

View Article and Find Full Text PDF

Nanoparticle-based delivery technologies have played a central role in a wide variety of applications, including cell therapy, gene transformation, and cellular delivery of molecular dyes. This work synthesized via ionic exchange a nanoparticle consisting of zinc-layered hydroxychloride coupled with yeast β-glucan (ZG), whose cellular immune response was evaluated using fish spleen leukocytes. Leukocytes from the marine Pacific red snapper (Lutjanus peru) were stimulated with zinc-layered hydroxychloride (ZHC) coupled with yeast β-glucan (GLU) and challenged with live Vibrio parahaemolyticus after 24 h.

View Article and Find Full Text PDF