John Rojas
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View article: A method for modifying carbonaceous materials with manganese carbonate to module the formation of singlet oxygen via activation with Peroxymonosulfate
A method for modifying carbonaceous materials with manganese carbonate to module the formation of singlet oxygen via activation with Peroxymonosulfate Open
View article: Multimodal Sensory Characterization of Colombian Cocoa Liquor: Integrating Electronic and Human Sensory Evaluation
Multimodal Sensory Characterization of Colombian Cocoa Liquor: Integrating Electronic and Human Sensory Evaluation Open
View article: Chitosan-Based Dressings Containing Encapsulated Aloe Vera L. And Curcuma Longa L. Extracts: Microstructural, Bioactive and Wound-Healing Properties
Chitosan-Based Dressings Containing Encapsulated Aloe Vera L. And Curcuma Longa L. Extracts: Microstructural, Bioactive and Wound-Healing Properties Open
View article: Effects of Manganese Carbonate Addition on the Carbocatalytic Properties of Lignocellulosic Waste for Use in the Degradation of Acetaminophen
Effects of Manganese Carbonate Addition on the Carbocatalytic Properties of Lignocellulosic Waste for Use in the Degradation of Acetaminophen Open
A carbon-based material was synthesized using potato peels (BPP) and banana pseudo-stems (BPS), both of which were modified with manganese to produce BPP-Mn and BPS-Mn, respectively. These materials were assessed for their ability to activ…
View article: Modulation of Electronic Availability in g-C3N4 Using Nickel (II), Manganese (II), and Copper (II) to Enhance the Disinfection and Photocatalytic Properties
Modulation of Electronic Availability in g-C3N4 Using Nickel (II), Manganese (II), and Copper (II) to Enhance the Disinfection and Photocatalytic Properties Open
Carbon nitrides can form coordination compounds or metallic oxides in the presence of transition metals, depending on the reaction conditions. By adjusting the pH to basic levels for mild synthesis with metals, composites like g-C3N4-M(OH)…
View article: Effect of the Structural Modification of Plant Proteins as Microencapsulating Agents of Bioactive Compounds from Annatto Seeds (Bixa orellana L.)
Effect of the Structural Modification of Plant Proteins as Microencapsulating Agents of Bioactive Compounds from Annatto Seeds (Bixa orellana L.) Open
This project studied the use of lentil protein (LP) and quinoa protein (QP) in their native and modified states as carrier material in the encapsulation process by the ionic gelation technique of annatto seed extract. Soy protein (SP) was …
View article: Elaboración de un bioadsorbente modificado a partir de los desechos de camarón para la descontaminación de aguas residuales
Elaboración de un bioadsorbente modificado a partir de los desechos de camarón para la descontaminación de aguas residuales Open
Objetivo: desarrollar un bioadsorbente modificado químicamente a partir de los desechos de camarón para la remoción de fármacos de aguas residuales. Métodos: se elaboraron bioadsorbentes mediante pirolisis y activación química con ácido fo…
View article: SYNTHESIS OF UREA AND MAGNETITE-BASED CHITIN AS ADSORBENTS FOR THE REMOVAL OF AMLODIPINE BESYLATE
SYNTHESIS OF UREA AND MAGNETITE-BASED CHITIN AS ADSORBENTS FOR THE REMOVAL OF AMLODIPINE BESYLATE Open
Objective: Development of urea and magnetite-based chitin adsorbents for the removal of amlodipine besylate. Methods: Amlodipine is a calcium channel blocker widely used to treat hypertension and angina. However, it is important to treat t…
View article: Effect of the Concentration, pH, and Ca2+ Ions on the Rheological Properties of Concentrate Proteins from Quinoa, Lentil, and Black Bean
Effect of the Concentration, pH, and Ca2+ Ions on the Rheological Properties of Concentrate Proteins from Quinoa, Lentil, and Black Bean Open
Given consumer trends propelling a movement toward using plant protein in the food industry and searching for alternative protein ingredients by the industry, this study aimed to assess the influence of factors such as protein concentratio…
View article: Production of an Effervescent Powder from <i>Solanum betaceum</i> Fruit Having Enhanced Antioxidant Properties
Production of an Effervescent Powder from <i>Solanum betaceum</i> Fruit Having Enhanced Antioxidant Properties Open
Currently, people have an increasing trend towards the consumption of healthy foods having a large content of antioxidants. These substances prevent the oxidative stress caused by several pathologic conditions. Particularly, studies have f…
View article: Modified-release of encapsulated bioactive compounds from annatto seeds produced by optimized ionic gelation techniques
Modified-release of encapsulated bioactive compounds from annatto seeds produced by optimized ionic gelation techniques Open
To compare the encapsulation of annatto extract by external gelation (EG) and internal gelation (IG) and to maximize process yield (% Y), two central composite designs were proposed. Calcium chloride (CaCl 2 ) concentration (0.3–3.5%), alg…
View article: Rheological, thermal, and microstructural data of lemon essential oil structured with fatty gelators
Rheological, thermal, and microstructural data of lemon essential oil structured with fatty gelators Open
View article: Use of Plant Proteins as Microencapsulating Agents of Bioactive Compounds Extracted from Annatto Seeds (Bixa orellana L.)
Use of Plant Proteins as Microencapsulating Agents of Bioactive Compounds Extracted from Annatto Seeds (Bixa orellana L.) Open
This study aimed to assess the thermal stability of the bioactive compounds from annatto seed extract, encapsulated by ionic gelation using quinoa proteins, lentil proteins, soy proteins, and sodium caseinate as carrying materials. The 10.…
View article: Comparative Evaluation of Sonicated Shrimp Waste Hydrolysates as Potential Fertilizers for Legumes
Comparative Evaluation of Sonicated Shrimp Waste Hydrolysates as Potential Fertilizers for Legumes Open
The global annual production of shrimp is nearly 4.8 million metric tons, generating almost half this weight in waste. The aim of this study was to assess the development and crop production of legumes fertilized with alkaline sonicated sh…
View article: SEM Study of Growth of SnO<sub>2</sub> Nanoflowers in Thin films by Spray Pyrolysis
SEM Study of Growth of SnO<sub>2</sub> Nanoflowers in Thin films by Spray Pyrolysis Open
View article: SEM Study of Zn/ZnO Transition Obtained by Mechanical Milling
SEM Study of Zn/ZnO Transition Obtained by Mechanical Milling Open
View article: Comparative Assessment of Shrimp Hydrolyzates as Alternative Organic Fertilizers for Legumes
Comparative Assessment of Shrimp Hydrolyzates as Alternative Organic Fertilizers for Legumes Open
The global annual production of shrimp is nearly 4 million metric tons generating almost half of this weight in waste.This study assessed the crop production of legumes fertilized with shrimp exoskeletons obtained by microwaves under green…
View article: Ultrasound-Assisted Extraction of Bioactive Compounds from Annatto Seeds, Evaluation of Their Antimicrobial and Antioxidant Activity, and Identification of Main Compounds by LC/ESI-MS Analysis
Ultrasound-Assisted Extraction of Bioactive Compounds from Annatto Seeds, Evaluation of Their Antimicrobial and Antioxidant Activity, and Identification of Main Compounds by LC/ESI-MS Analysis Open
This study evaluated the antimicrobial activity (i.e., against Bacillus cereus and Staphylococcus aureus ) and the antioxidant activity (i.e., ABTS, FRAP, and DPPH) of annatto seeds extract obtained by ultrasound-assisted extraction. A res…
View article: Optimization of the Microwave-Assisted Extraction Process of Bioactive Compounds from Annatto Seeds (Bixa orellana L.)
Optimization of the Microwave-Assisted Extraction Process of Bioactive Compounds from Annatto Seeds (Bixa orellana L.) Open
This study deals with the extraction, optimization, and evaluation of the antioxidant and antimicrobial activities of bioactive compounds obtained from the seeds of annatto using microwave-assisted extraction as compared to leaching. Annat…
View article: Preparation, Characterization and Rheological Behavior of Glutathione-Chitosan Conjugates in Aqueous Media
Preparation, Characterization and Rheological Behavior of Glutathione-Chitosan Conjugates in Aqueous Media Open
Glutathione-chitosan conjugates are adequate carriers for anticancer treatment due to their ability for inhibition of efflux pumps, improved mucoadhesivity and in-situ gelling. These conjugates were obtained via carbodiimide at different r…
View article: Wheatgrass juice, Sensory analyses, Novel food, Functional food
Wheatgrass juice, Sensory analyses, Novel food, Functional food Open
Proteins from plant sources are macromolecules of industrial interest due to its high
\navailability, biodegradability, renewable character and functional properties such as
\nbiocompatibility, good amphiphilic properties, water solubility…
View article: Proteins functionalization: a strategy that boost the performance of these macromolecules for innovative pharmaceutical and food developments
Proteins functionalization: a strategy that boost the performance of these macromolecules for innovative pharmaceutical and food developments Open
Proteins are macromolecules exhibiting amphiphilic properties, good biocompatibility, biodegradability, high nutritional value, and show strong interactions with several types of active compounds via hydrogen
\nbonding and electrostatic in…
View article: Vegetable Proteins: Non-sensitizing Encapsulation Agents for Bioactive Compounds
Vegetable Proteins: Non-sensitizing Encapsulation Agents for Bioactive Compounds Open
Plant-derived proteins are remarkable macromolecules of scientific interest because they represent an alternative to the animal-derived proteins and petroleum-derived polymers. Many food proteins especially those derived from animal source…
View article: COMPARATIVE EVALUATION OF THE RELEASE PROPERTIES OF VERAPAMIL HCL AND CARBAMAZEPINE FROM MICROCRYSTALLINE CELLULOSE II PELLETS
COMPARATIVE EVALUATION OF THE RELEASE PROPERTIES OF VERAPAMIL HCL AND CARBAMAZEPINE FROM MICROCRYSTALLINE CELLULOSE II PELLETS Open
Objective: To study microcrystalline cellulose II (MCCII) as new pelletization aid for a high and low solubility drugs such as verapamil. HCl and carbamazepine, respectively.Methods: Approximately, 30 g of MCCII and drug mixtures were hydr…
View article: ASSESSMENT OF THE PRODUCTION VARIABLES ON THE PELLETIZATION PROPERTIES OF MICROCRYSTALLINE CELLULOSE II (MCCII)
ASSESSMENT OF THE PRODUCTION VARIABLES ON THE PELLETIZATION PROPERTIES OF MICROCRYSTALLINE CELLULOSE II (MCCII) Open
Objective: To study microcrystalline cellulose II (MCCII) as new pelletization aid using the extrusion/spheronization technology.Methods: The effect of the spheronization rate and spheronization time was assessed by a response surface desi…
View article: Effect of different production variables on the physical properties of pellets prepared by extrusion-spheronization using a multivariate analysis
Effect of different production variables on the physical properties of pellets prepared by extrusion-spheronization using a multivariate analysis Open
The spheronization process has been widely used in recent years in multiparticulate oral formulations because it is a simple and rapid technology. It offers advantages over other dosage forms such as tablets due to the more uniform and pre…
View article: RHEOLOGY: A FEASIBLE TOOL TO ASSESS THE VISCOELASTIC BEHAVIOR OF NATURAL INGREDIENTS
RHEOLOGY: A FEASIBLE TOOL TO ASSESS THE VISCOELASTIC BEHAVIOR OF NATURAL INGREDIENTS Open
Rheology studies the flow and deformation of materials. Thus, the knowledge of the rheological and mechanical properties is important for product design, production, quality control, and for predicting shelf storage stability. Rheology stu…
View article: THE HEALTH BENEFITS OF NATURAL SKIN UVA PHOTOPROTECTIVE COMPOUNDS FOUND IN BOTANICAL SOURCES
THE HEALTH BENEFITS OF NATURAL SKIN UVA PHOTOPROTECTIVE COMPOUNDS FOUND IN BOTANICAL SOURCES Open
In recent years, botanicals have gained importance due to their dermal photoprotective effect against the harmful UV radiation. This radiation generates reactive oxygen species which attack proteins, lipids, and nucleic acids among others.…
View article: Current Trends in the Production of Cellulose Nanoparticles and Nanocomposites for Biomedical Applications
Current Trends in the Production of Cellulose Nanoparticles and Nanocomposites for Biomedical Applications Open
The goal of this chapter is to review the most recent trends to produce cellulose nanoparticles and nanocomposites with biomedical applications. These particles could be named as bacterial cellulose, cellulose nanofibers, and cellulose nan…
View article: Freeze-drying: perceptions and challenges for drying foodstuffs and plant extracts
Freeze-drying: perceptions and challenges for drying foodstuffs and plant extracts Open
One of the most important features of foodstuffs and plant extract-based products is related to their fragile stability, especially when exposed to several ambient factors such as air, light radiation, heat and water vapour. The latter may…