Blanca Jalvo

Blanca Jalvo
Stockholm University and ScienceLifeLab

PhD

About

17
Publications
6,865
Reads
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487
Citations
Introduction
Chemical pollutants have mostly been studied in isolation for their effects on few organisms. However, chemicals are found in mixtures, of which the biological activity remains unknown. My work sets out to study the sensitivity of bacteria to chemical pollution, in terms of the effect of chemical mixtures at bacterial cellular level.
Additional affiliations
August 2016 - November 2016
Stockholm University
Position
  • PhD Student
October 2015 - December 2015
Stockholm University
Position
  • PhD Student
April 2015 - June 2015
Luleå University of Technology
Position
  • PhD Student

Publications

Publications (17)
Article
Full-text available
This article presents a comparative study of the surface characteristics and water purification performance of commercially available cellulose nonwoven fabrics modified, via cast coating, with different nano-dimensioned bio-based carbohydrate polymers, viz. cellulose nanocrystals (CNC), TEMPO-oxidized cellulose nanofibers (T-CNF), and chitin nanoc...
Article
Full-text available
This study reports the potential of TEMPO-oxidized cellulose nanofibrils (T-CNF)/poly(vinyl alcohol) (PVA) coatings to develop functionalized membranes in the ultrafiltration regime with outstanding antifouling performance and dimensional/pH stability. PVA acts as an anchoring phase interacting with the polyethersulfone (PES) substrate and stabiliz...
Article
Full-text available
The tunicate species Ciona intestinalis is a fast-growing marine invertebrate animal that contains cellulose in its outer part—the tunic. The high crystallinity and microfibril aspect ratio of tunicate cellulose make it an excellent starting material for the isolation of nanocellulose. In the present work, tunic from C. intestinalis was subjected t...
Preprint
Full-text available
This article presents a waterborne nanocellulose coating process to change the surface characteristics and mitigate fouling of commercially available polyethersulfone (PES) microfiltration membranes. An extensive comparative study between nanoporous and nano-textured layers composed of cellulose nanocrystals (CNC) or TEMPO-oxidized cellulose nanofi...
Article
Full-text available
Hybrid materials from nanocellulose, lignin and surface-grafted zwitterionic poly(sulfobetaine methacrylate) (PSBMA) chains are prepared to attain anti-fouling bio-based nanomaterials with enhanced anti-bacterial performance. The grafting of PSBMA from both cellulose and lignocellulose nanocrystals (CNC and LCNC, respectively) is attempted; however...
Cover Page
Full-text available
Hybrid materials from nanocellulose, lignin, and surface-grafted zwitterionic poly(sulfobetaine methacrylate) (PSBMA) chains are prepared to attain antifouling bio-based nanomaterials with enhanced antibacterial performance. The grafting of PSBMA from both cellulose and lignocellulose nanocrystals (CNC and LCNC, respectively) is attempted; however,...
Article
Full-text available
Rising sustainability demands the search of new low-market-value sources of lignocellulosic biomass as raw material for nanocellulose processing. In this paper, we accordingly propose the isolation of nanocellulose from Prosopis juliflora, an abundant but environmentally undesired tree. P. juliflora wood was powered, refined by steam explosion and...
Article
Full-text available
This work proposes a strategy to prepare membranes that combine the network characteristics of micro/nanocellulose with zwitterionic poly (cysteine methacrylate) (PCysMA) to develop fully bio-based membranes with antifouling properties. A functional membrane template was obtained first by fabricating a water stable network from cellulose micro- and...
Article
Full-text available
The aim of this work was to use electrospray to create photocatalytic TiO2 coatings and to study their antibacterial and antibiofilm capacity. The electrospray used a sol of TiO2 anatase nanoparticles prepared by a sol-gel method, which formed stable suspensions of positively charged particles (zeta-potential +22.3 ± 3.7 mV). The electrospray depos...
Article
Full-text available
The transcriptional regulator AmrZ is a global regulatory protein conserved within the pseudomonads. AmrZ can act both as a positive and a negative regulator of gene expression, controlling many genes implicated in environmental adaption. Regulated traits include motility, iron homeostasis, exopolysaccharides production and the ability to form biof...
Article
Full-text available
In this study, we used electrospinning to produce core-shell nanofibers of poly(lactic acid) as core and polyacrylonitrile/ cellulose nanocrystals (CNC) or polyacrylonitrile/chitin nanocrystals (ChNC) as shell. Electrospun materials prepared at different nanocrystal concentrations were tested and assayed as microfiltration membranes. The coaxial me...
Article
Full-text available
A photocatalytic sol of TiO2 nanoparticles has been used for creating self-cleaning antimicrobial flat and porous glass surfaces. The substrates were irradiated to study their photocatalytic properties and behavior in the presence of biofilm-forming bacteria. Smooth glass surfaces and glass microfiber filters were covered with 1.98·10⁻³ ± 1.5·10⁻⁴...
Article
Full-text available
Electrospun cellulose acetate composites containing silver and copper nanoparticles supported in sepiolite and mesoporous silica were prepared and tested as fungistatic membranes against the fungus Aspergillus niger. The nanoparticles were in the 3–50 nm range for sepiolite supported materials and limited by the size of mesopores (5–8 nm) in the ca...
Article
Full-text available
We report a reversible wettability hydrophobic to hydrophilic transition in transparent glass-like carbon films under ultraviolet irradiation when the source emitted in the vacuum ultraviolet. The transition occurred at doses below 5 J/cm2 for devices emitting at 185 nm and was absent when using a 266 nm monochromatic laser source. Hydrophilicity,...
Article
Full-text available
Electrospun cellulose acetate (CA) random mats were prepared and surface coated with chitin nanocrystals (ChNC) to obtain water filtration membranes with tailored surface characteristics. Chitin nanocrystals self-assembled on the surface of CA fibers into homogenous nanostructured networks during drying that stabilized via hydrogen bonding and form...
Article
Full-text available
The sequence of the genome of Pseudomonas fluorescens F113 has shown the presence of multiple traits relevant for rhizosphere colonization and plant growth promotion. Among these traits are denitrification and chemotactic motility. Besides aerobic growth, F113 is able to grow anaerobically using nitrate and nitrite as final electron acceptors. F113...

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Projects

Projects (3)
Project
Study the sensitivity of bacteria to chemical pollution, in terms of the effect of chemical mixtures at bacterial cellular level.
Project
The design of new surfaces is an emerging strategy to prevent biofilm formation in the medical, food, and marine industries. Many innovative techniques could be applied to create new surfaces, for example, via new surface materials, surface modifications, new coating, and paint.