Antonio Guerrero

Antonio Guerrero
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Antonio verified their affiliation via an institutional email.
University of Seville | US · Chemical Engineering

Professor of Chemical Engineering

About

279
Publications
52,682
Reads
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6,637
Citations
Introduction
Current research interest deals with the design and development of biopolymer-based products of tailored microstructure and functionality for a variety of applications (food emulsions and gels, biodegradable superabsorbent materials, scaffolds for tissue engineering, biopolymer matrices for encapsulation/controlled release). Among the characterization techniques used are rheological techniques for complex fluids, soft mater and solid-like materials, interfacial rheology of complex fluid-fluid layers, dynamic light scattering , microscopy (CLSM, SEM, CryoSEM, TEM). Among the processing techniques used are high pressure homogenization, heat or HHP gelation, freeze-drying of hydrogels, electrospinning for nanofiber mats, mixing of biopolymer blends, compression or injection moulding .

Publications

Publications (279)
Article
Full-text available
The formation of nanofibrous membranes via electrospinning is typically restricted to high molecular weight polymers in an appropriate solvent, correlated with the necessary formation of polymer chain entanglements that are needed to achieve successful production of electrospun fibers. The present work extends the electrospinning of low molecular w...
Article
Full-text available
Sustainable synthesis of ZnO and Fe x O y nanoparticles and their nanocomposite ZnFe 2 O 4 : Comprehensive characterization and applications in antioxidant activity and antibiotics degradation efficiency, Bioorganic Chemistry (2024), doi: https://doi. Abstract This study focuses on developing and evaluating eco-friendly nanoparticles, specifically...
Article
Proteins are sources of peptides and amino acids which are able to stimulate plant growth through mechanisms such as enhancement of root growth and increased availability of micronutrients. Protein-based matrices are a novel source of these raw materials since they allow their availability in small, prolonged doses, which could be of interest in in...
Article
Full-text available
This study presents the synthesis of agro-waste banana peel extract-based magnetic iron oxide nanoparticles (BPEx-MIONPs), emphasizing antioxidant capacity and food preservation. Using iron (III) chloride hexahydrate (FeCl3 · 6 H2O) as a precursor and a reducing agent from agro-waste peel extract, a precisely controlled process yielded BPEx-MIONPs....
Article
Full-text available
The quest for sustainable synthesis methods has led to the exploration of lychee peel extract (LCPEx) as an eco-friendly alternative in the field of nanomaterials. This groundbreaking study introduces the synthesis of lychee peel extract-based magnetic iron oxide nanoparticles (LCPEx-MIONPs) and delves into their diverse applications. The meticulou...
Article
Full-text available
This research involved synthesizing zinc salt-dependent zinc oxide nanoparticles (ZS-ZnO-NPs) using different zinc salts (ZnCl2, ZnSO4·H2O, Zn(CH3COO)2·2H2O, and Zn(NO3)2·6H2O) and plant extracts of Phoenix dactylifera L. The synthesis efficiency was evaluated, and to carry out further investigations, zeta potential measurements, as well as SEM and...
Preprint
Full-text available
This study presents the synthesis of agrowaste banana peel extract-based magnetic iron oxide nanoparticles (BPEx-MIONPs), emphasizing antioxidant capacity and food preservation. Using iron (III) chloride hexahydrate (FeCl 3 · 6 H 2 O) as a precursor and a reducing agent from agrowaste peel extract, a precisely controlled process yielded BPEx-MIONPs...
Article
Biocomposites based on wheat gluten and reinforced with carbon fibers were produced in line with the strive to replace fossil-based plastics with microplastic-free alternatives with competing mechanical properties. The materials were first extruded/compounded and then successfully injection molded, making the setup adequate for the current industri...
Article
Full-text available
This study comprehensively analyzed green nanomagnetic iron oxide particles (GNMI-OPs) synthesized using a green method, investigating their size, shape, crystallinity, aggregation, phase portions, stability, and magnetism. The influence of pH and washing solvents on the magnetic properties of the nanoparticles and their incorporation into PCL memb...
Article
Full-text available
This study investigated the impact of adding zinc oxide nanoparticles (ZnO-NPs) to electrospun membranes and cast films made of poly(ε-caprolactone) (PCL). The physicochemical, mechanical, and morphological properties of the samples were analyzed. Physicochemical parameters included water contact angle (WCA), water vapor transmission rate (WVTR), p...
Article
Biorefinery was used to transform two organic wastes, i.e. urban park & garden green waste and porcine plasma (PPP), into raw materials for biocomposite production. The effect of the nature, size and content of the filler on the final performance of biocomposites was assessed. Two fractions stemming from an urban park and garden green waste, i.e. a...
Article
Full-text available
This manuscript focuses on the production of polymeric matrices enriched in minerals and antioxidant compounds. The biopolymers employed are obtained from different by-products of the agro-food industry (porcine plasma protein, pea protein concentrate and soy protein isolate), which helps to revalorize them. Two different manufacturing techniques a...
Article
Full-text available
Citation: Abdullah, J.A.A.; Díaz-García, Á.; Law, J.Y.; Romero, A.; Franco, V.; Guerrero, A. Quantifying the Structure and Properties of Nanomagnetic Iron Oxide Particles for Enhanced Functionality through Chemical Synthesis. Nanomaterials 2023, 13, 2242. https://doi. Abstract: This comprehensive study investigates the properties of chemical nanoma...
Article
Full-text available
Barley is one of the most consumed cereals, with many different cultivars available worldwide. Like other crops, its yield has been affected by climate change and soil degradation. This work proposes controlled-release protein-based matrices with incorporated zinc to improve barley seed germination and zinc content in the plant. Thus, the main obje...
Conference Paper
An overview of the effects that different processing conditions have on the rheology and droplet size distribution of o/w emulsions containing different macromolecular and low molecular weight emulsifiers is presented. The processing variables studied were emulsification time, agitation speed, temperature of emulsification, previous thermal treatme...
Article
Full-text available
Graphene oxide (GO) was used in this study as a template to successfully synthesize silicon oxide (SiOx) based 2D-nanomaterials, adapting the same morphological features as the GO sheets. By performing a controlled condensation reaction using low concentrations of GO (<0.5 wt%), the study shows how to obtain 2D-nanoflakes, consisting of GO-flakes c...
Cover Page
Full-text available
The cover image by Johar Amin Ahmed Abdullah visually showcases the nanofiber morphologies of PCL with GMIONPs (5% w/w), highlighting their distributions. It demonstrates a uniform distribution of nanoparticles with some agglomeration, influenced by interactions between phenolic compound charges on GMIONPs surfaces and polymer chains within the fib...
Article
Full-text available
This study investigates the effects of incorporating green and chemical magnetic iron oxide nanoparticles (GMIONPs and CMIONPs, respectively) into poly(ε‐caprolactone) (PCL) nanofibrous membranes on their physicochemical, mechanical, morphological, and functional properties. The study evaluates the physicochemical and optical properties of the nano...
Article
Full-text available
The expansion of food production has a large environmental impact in many ways. More specifically, 30–40% of total food production is lost as wastes and/or by-products before it reaches the market. In this sense, blood is an inevitable by-product in the meat industry that typically consists of 3–5% of the total weight of the animal. The dry organic...
Poster
Full-text available
Superabsorbent materials (SAMs) are loosely cross-linked polymers which possess the capacity to absorb and retain an amount of water equal to or higher than 10 times its own weight, with applications in various fields, e.g., sanitary pads, diapers, and soil conditioners, among others. However, one of the main concerns about their use is that most c...
Article
Full-text available
Recently, nanoparticles (NPs) synthesis has evolved into a green nanotechnology field, requiring more eco-synthesis of nanoparticles due to the high costs of other chemical-physical methods. Among the most commonly used...
Cover Page
Full-text available
Cover Story: This article explores the importance of antioxidants and antibacterial agents in biosystems and the potential use of iron oxide nanoparticles as agents to minimize free radical reactions and pathogen growth. The study focuses on the effects of the calcination process on the properties of iron oxide nanoparticles synthesized using green...
Article
Full-text available
Nowadays, antioxidants and antibacterial activity play an increasingly vital role in biosystems due to the biochemical and biological reactions that involve free radicals and pathogen growth, which occur in many systems. For this purpose, continuous efforts are being made to minimize these reactions, including the use of nanomaterials as antioxidan...
Article
Full-text available
Keratin is a largely available protein that can be obtained from the ca. 3 million tons of feathers that the European poultry industry produces as a side-stream. Here, the functionalization of keratin from poultry feathers was evaluated using a one- versus two-stage process using two functionalization agents (succinic anhydride-SA and ethylene dian...
Article
Full-text available
It has become more widely available to use biopolymer-based films as alternatives to conventional plastic-based films due to their non-toxic properties, flexibility, and affordability. However, they are limited in application due to deficiencies in their properties. The marine collagen was the specimen for the present study. Thus, the main objectiv...
Article
Full-text available
Nowadays, biopolymer-based films are being developed as an alternative to conventional plastic-based films, mainly because they are non-toxic, flexible, inexpensive, and widely available. However, they are restricted in their applications due to several deficiencies in their properties. Accordingly, the reinforcement of these materials with nanopar...
Article
Full-text available
Nowadays, natural polymer-based films are considered potentially environmentally friendly alternatives to conventional plastic films, due to many advantageous properties, including their easy processability, high flexibility, non-toxicity, low cost, high availability, and environmental safety. However, they are limited in their application by a num...
Article
Full-text available
Fertilization is an increasingly common practice in horticulture. Nevertheless, the conventionally used fertilization method is ineffective, and it generates contamination problems due to excess nutrients. Therefore, new technologies, such as nanofertilization or controlled-release systems of fertilizers, are currently being tested. Thus, the main...
Chapter
The great versatility and price of protein-based bioplastics have led them to be considered the best option to substitute conventional plastics. Among their characteristics, the ability to have antimicrobial activity has aroused great interest in sectors such as food industry, pharmacy, medicine or agriculture. All this has meant that research in t...
Preprint
Full-text available
In the last few decades, nanoparticles (NPs) synthesis has evolved into a green nanotechnology field, requiring more eco-synthesis of nanoparticles due to the high costs of other chemical-physical methods. Among the most commonly used nanomaterials, ZnO-NPs are highly valuable due to their specific, thermal, optical, and electronic features. Thus,...
Preprint
Full-text available
Recently, nanoparticles (NPs) synthesis has evolved into a green nanotechnology field, requiring more eco-synthesis of nanoparticles due to the high costs of other chemical-physical methods. Among the most commonly used nanomaterials, ZnO-NPs are highly valuable due to their specific, thermal, optical, and electronic features. Thus, the main object...
Article
Full-text available
The consumer's perception that food is one of the main determining factors for health increases the demand for foods in line with this trend. The food industry is researching new ingredients, formulations, and technologies aiming to respond to this demand. Namely, product formulations are increasingly less complex, with fewer additives, and manufac...
Article
Full-text available
Iron oxide nanoparticles (FexOy-NPs) are currently being applied in numerous high-tech sectors, such as in chemical sectors for catalysis and in the medical sector for drug delivery systems and antimicrobial purposes, due to their specific, unique and magnetic properties. Nevertheless, their synthesis is under continuous investigation, as physicoch...
Article
Full-text available
The nanoparticles (NPs) synthesis poses an environmental problem: the formation of other toxic substances. An eco-friendlier alternative method based on the use of polyphenolic extracts is gaining interest due to their potential to reduce metal salts for the formation of NPs without toxic products. Thus, the main objective of this work was to obtai...
Article
Full-text available
Double emulsions are a type of multiple emulsions, which can be defined as a multicompartmentalized system where the droplets are dispersed into the continuous phase containing other emulsions. Although double food-grade emulsions have been manufactured, there is a lack of scientific background related to the influence of different processing condi...
Article
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The design of functional composite filaments for fused filament deposition requires a suitable polymer composition, functionality of particles, uniform distribution of fillers throughout the filament, and adequate printability. Uniform distribution at predictable concentrations is achieved by designing polymeric capsules containing the fillers and...
Article
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Currently, gelatin-based films are regarded as promising alternatives to non-environmentally friendly plastic films for food packaging. Nevertheless, although they have great biodegradability, their weak mechanical properties and high solubility limit their applications. In this way, the use of nanoparticles, such as FexOy-NPs, could improve the pr...
Article
Full-text available
The seaweed Rugulopteryx okamurae, from the Pacific Ocean, is considered an invasive species in the Mediterranean Sea. In this work, the use of this seaweed is proposed for the development of bio-based plastic materials (bioplastics) as a possible solution to the pollution produced by the plastic industry. The raw seaweed Rugulopteryx okamurae was...
Chapter
Food nanoemulsions or double emulsions can be used as delivery systems for bioactive ingredients, either hydrophilic (e.g. peptides, protein hydrolysates) or lipophilic (e.g. essential fatty acids), resulting in health-promoting food products highly demanded by consumers. A critical factor in developing kinetically stable emulsions and adequate del...
Article
Full-text available
Chitosan-pectin hydrogels were prepared, and their rheological properties were assessed in order to select the best system to develop scaffolds by 3D printing. Hydrogels showed a weak gel behavior with shear thinning flow properties, caused by the physical interactions formed between both polysaccharides, as observed by FTIR analysis. Since systems...
Article
Full-text available
Egg yolk is a multifunctional ingredient widely used in many food products, wherein proteins are the dominant component contributing to this functionality. However, the potential risk of foodborne illness associated with egg use forces us to ensure that foodstuffs based on egg yolk are managed in a safe and sanitary manner. Lowering the pH under a...
Article
The agro-food industry produces huge amounts of wastes and by-products with high levels of carbohydrates and proteins, basic food groups that, properly treated, can be employed for the development of bioplastics. These high added-value products represent an alternative to traditional polymers. In this research work, rice bran was mixed with glycero...
Article
Full-text available
Bioplastics are mostly processed by injection molding. However, more continuous techniques are still being tested, such as extrusion, which allow them to be produced at a lower cost. In this way, the principal objective of this work was to develop soy protein‐based bioplastics with zinc sulphate (fertilizer) incorporated by extrusion, using differe...
Article
Full-text available
The replacement of plastic materials derived from petroleum derivatives by highly biodegradable materials has been pursued to counteract the global environmental damage caused by their accumulated landfilling. In this sense, the feasibility of a soy protein isolate (SPI) to obtain processed materials has been extensively documented. In the present...
Article
Full-text available
The creation of skeletal muscle tissue in vitro is a major topic of interest today in the field of biomedical research, due to the lack of treatments for muscle loss due to traumatic accidents or disease. For this reason, the ability of intrinsic properties of nanofibrillar structures to promote cell adhesion, proliferation, and cell alignment pres...
Article
Ultrasound pre-treatment and protein extraction of Desmodesmus sp. and Tetradesmus obliquus biomass induced residual microalgae/polycaprolactone (PCL) biocomposites with higher viscoelastic and mechanical properties as injection mould temperature increased. This was probably associated to the promotion of microalgae proteins-PCL interactions. The P...
Chapter
The global market of superabsorbent materials (SAMs) has been estimated at 7.5 billion € in 2017 and is expected to keep growing annually at a rate of 6.2%. Most SAMs used nowadays are based on acrylic derivatives, but their toxicity, low biodegradability and petrochemical nature, together with their high price and incompatibility with agricultur...
Article
Full-text available
Experiments were performed using visual and PIV techniques in order to study the appearance of a negative wake as well as its influence upon the deformation and breakup of droplets rising in viscoelastic fluids. In this report, Newtonian and viscoelastic drops were injected through different viscoelastic fluids; the deformation of the droplets was...
Article
La imagen superampliable sería de una matriz proteica procesada en condiciones diferentes, de manera que mejoran las propiedades mecánicas al tiempo que se pierden las propiedades superabsorbentes del material al modificar las condiciones de procesado. A través de la imagen, los alumnos/as podrán adentrarse en imágenes obtenidas por microscopía de...
Chapter
Even though proteins have been used for the development of plastic materials for a long time, their use has not proliferated when compared to other plant materials, such as starch or cellulose. Moreover, the current trend in the bioplastic market is based on polylactic acid or polyhydroxycarbonates, such that a feasible and globally accepted formul...
Article
Full-text available
Porcine plasma protein is a by-product of the meat industry, which has already been applied in the manufacture of superabsorbent materials. The effects of plasticizer content (0%, 25%, 50%), together with those of the drying method (freeze-drying, thermal drying at 50 °C), during the processing of superabsorbent porcine plasma matrices were studied...
Article
Full-text available
Biological recognition sites are very useful for biomedical purposes and, more specifically, for polymeric scaffolds. However, synthetic polymers are not capable of providing specific biological recognition sites. To solve this inconvenience, functionalization of biological moieties is typically performed, oftentimes via peptide binding. In this se...
Chapter
Bioplastics have become a potential alternative to the use of plastics. More specifically, they will contribute to reducing the high accumulation of plastics, which is caused by their low biodegradability. In addition, these bioplastics can be obtained from waste and by-products from other industries (mainly agri-food), which not only lower their c...
Article
Full-text available
Composite materials based on proteins and carbohydrates normally offer improved water solubility, biodegradability, and biocompatibility, which make them attractive for a wide range of applications. Soy protein isolate (SPI) has shown superabsorbent properties that are useful in fields such as agriculture. Alginate salts (ALG) are linear anionic po...
Article
Full-text available
The nature of the plasticizer fraction within a bioplastic matrix is of extreme importance. Thus, brittleness has sometimes been observed when water has been used. The goal of the present manuscript has been to assess the effects of the addition of sucrose and trehalose in gluten-based bioplastics either in presence or absence of water. It was foun...
Article
Full-text available
Chickpea (Cicer arietinum L.) is a legume of Fabaceae family whose grains are rich in proteins, total dietary fiber, unsaturated lipids, minerals and bioactive compounds with antioxidant activity. Therefore, chickpea flour can be an attractive high nutritional complement to wheat flour for the formulation of composite breads. In the present study,...
Article
Full-text available
A great amount of biowastes, comprising byproducts and biomass wastes, is originated yearly from the agri-food industry. These biowastes are commonly rich in proteins and polysaccharides and are mainly discarded or used for animal feeding. As regulations aim to shift from a fossil-based to a bio-based circular economy model, biowastes are also bein...
Article
Full-text available
Developing scaffolds by combining different polymers in order to improve the properties of the bare polymers has become an extensively applied practice. Polycaprolactone (PCL) is a synthetic polyester with outstanding properties for tissue engineering (TE), although it does have certain drawbacks that can be counteracted by combining it with other...
Chapter
Electrospinning is a versatile process that allows obtaining membranes formed by micro- and nanometric fibres. Electrospun nanofibrous membranes offer many advantages over traditional fibres, such as high specific surface area, tunable porosity, greater flexibility and ease of manipulating fibre chemical compositions and structures for desired proper...
Article
Full-text available
Controlled release systems are increasing their presence on the market. However, their use is not generating a great impact on horticultural production, mainly due to their price, which makes crop production more expensive. This work proposes a cheaper alternative for the manufacture of these devices. Thus, an agri-food byproduct (soy protein isola...
Article
Full-text available
The replacement of common acrylic derivatives by biodegradable materials in the formulation of superabsorbent materials would lessen the associated environmental impact. Moreover, the use of by-products or biowastes from the food industry that are usually discarded would promote a desired circular economy. The present study deals with the developme...
Article
Actually, there is a need to develop more sustainable novel techniques for incorporating fertilizers into crops. Researchers have proposed the controlled release of these fertilizers from biodegradable protein-based matrices. This technique must be optimized, as it involves a higher initial incorporation of micronutrients compared to that eventuall...
Article
Throughout history, different techniques have been used for the development of scaffolds for Tissue Engineering. Among them, three-dimensional (3D) printing for this application has been recently enhanced due to its ease in defining the structure of the material. In this sense, a novel potential alternative could be the development of a three-part...
Article
Full-text available
In recent years, tissue engineering research has led to the development of this field by designing scaffolds with better properties that can fulfill its purpose of better and faster tissue regeneration, consequently improving people's quality of life. Scaffolds are matrices, predominantly composed of polymeric materials, whose main function is to o...
Article
Full-text available
The union of nanoscience (nanofertilization) with controlled release bioplastic systems could be a key factor for the improvement of fertilization in horticulture, avoiding excessive contamination and reducing the price of the products found in the current market. In this context, the objective of this work was to incorporate ZnO nanoparticles in s...
Article
Superabsorbent materials, showing water absorption higher than 1000 wt. %, are traditionally formulated on acrylic derivatives, which are expensive and with low biodegradability. The massive use of non-biodegradable plastic materials has caused a serious environmental impact which specially affects oceans and seas. Thus, their replacement by biopla...