http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/15 2026-04-21T10:30:55Z 2026-04-21T10:30:55Z Jiménez Rodríguez, Maricela Aguilar Santiago, Jorge González Novoa, María Guadalupe Flores Jiménez, Ariadna Berenice Gómez Rodríguez, Horacio http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/1670 2024-03-21T18:59:03Z 2023-07-01T00:00:00Z

Title: Sistema de almacenamiento distribuido para salvaguardar y almacenar información codificada aplicando caos Authors: Jiménez Rodríguez, Maricela; Aguilar Santiago, Jorge; González Novoa, María Guadalupe; Flores Jiménez, Ariadna Berenice; Gómez Rodríguez, Horacio Abstract: Abstract Currently, there is a requirement to implement different techniques in order to safeguard data from ill-intentioned users that can employ software tools to intercept any information traversing through the Internet or that are stored within a server without any form of encryption. Thus, this paper proposes a network or distributed storage system with a point-to-multipoint or mesh topology, in which there are several mobile devices, PC, and single-board computers (SBC), and storage media such as clouds, raids, flash drives, among others. On the network, one or more origin nodes collect information from photographic cameras, fingerprint readers, sensors, audio recorders, or any type of digital file; afterward, the developed procedure is employed to apply diffusion and confusion techniques to encrypt the data. Next, the cryptogram is segmented chaotically, generating fragments of different sizes and content, which can be transmitted and stored in a distributed manner or redundantly among other nodes on the net. The system provides data security and integrity, in that it allows the recovery of 100% of the encrypted information on employing the correct encryption keys. Resumen. Hoy en día es necesario implementar diferentes técnicas para salvaguardar la información de usuarios malintencionados que pueden implementar algún software para tomar los datos que viajan a través de la red o que se encuentran almacenados en un dispositivo sin ningún tipo de cifrado. Por tal razón, en esta investigación se propone una red o sistema de almacenamiento distribuido con una topología punto a multipunto o malla, donde se pueden conectar diferentes dispositivos móviles, PCs, computadoras de placa reducida (SBC) y medios de almacenamiento tales como: cloud, raid, memorias, entre otros. En la red uno o más nodos origen recaban información de cámaras fotográficas, lectores de huella, sensores, sonidos, o cualquier tipo de archivo digital; posteriormente se utiliza el procedimiento desarrollado que aplicar las técnicas de difusión y confusión con la finalidad de cifrar y posteriormente segmentar de forma caótica la información, generando fragmentos del criptograma muy diferentes en tamaño y contenido, los cuales se pueden transmitir y almacenar tanto de forma distribuida como redundante en otros nodos conectados en la red. El sistema proporciona seguridad e integridad a la información, ya que permite que con las claves utilizadas para cifrar se puedan recuperar el 100%. Description: Capítulo

2023-07-01T00:00:00Z Martínez Olivo, Abraham Osiris Zamora Gasga, Víctor Manuel Medina Torres, Luis Pérez Larios, Alejandro Sánchez Burgos, Jorge Alberto http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/1611 2024-02-19T21:58:10Z 2023-12-01T00:00:00Z

Title: Formulation of double emulsions of mango seed extract (Mangifera indica L.) 'Ataulfo' incorporated into a mango by-product flour drink: Release kinetics, antioxidant capacity, and inhibition of cyclooxygenases Authors: Martínez Olivo, Abraham Osiris; Zamora Gasga, Víctor Manuel; Medina Torres, Luis; Pérez Larios, Alejandro; Sánchez Burgos, Jorge Alberto Abstract: Abstract: The encapsulation and release of bioactive compounds obtained from by-products are aspects of exponential boom for several decades, as it seeks to maintain or enhance their activity. A double emulsion (W1/O/W2) was developed with mango seed extract (MS) 'Ataulfo', said extract contains gallic acid and pentagalloyl glucose as major compounds (80.16%). The double emulsion was subjected to release kinetics for 3 h in phosphate buffer (pH 6.9), presenting a release constant (k) of 35,350 ± 6,031 μg/mL/min, in addition to antioxidant capacity by the DPPH and FRAP method of 168,663 ± 4,273 and 39,718 ± 1,019 mMol/g of double emulsion respectively at 120 min of kinetics, the time of 120 min was determined as the latency time (l). The release behavior corresponds to zero-order kinetics since the release of the extract remains constant until the minimum concentration is reached to exert the antioxidant capacity mentioned above. The mechanism of release of the SM extract contained in the double emulsion is governed by diffusion (Fickian behavior), this was determined thanks to the equations of the Korsmeyer-Peppas mathematical model, obtaining a regression adjustment (R2) of 0.9252 for said model and R2 of 0.8126 for zero-order kinetics. The double emulsion was added to a mango peel drink formulation, to which the antitopoisomerase activity was determined in strains of S. cerevisiae (JN394 and JN362a), however, no inhibitory activity was presented towards any strain. The cyclooxygenase inhibition (COX) assay was performed on the 120-minute released fraction and the MS extract, showing that this fraction only showed 18.97% inhibition in COX-II, however, the SM extract obtained an inhibition percentage of 38.14% in COX-II. Description: Artículo

2023-12-01T00:00:00Z Arteaga Garibay, Ramón Ignacio Delgado Macuil, Raúl Jacobo Gómez Godínez, Lorena Jacqueline Cruz Cárdenas, Carlos Iván Villagrán de la Mora, Blanca Zuamí Giono Cerezo, Silvia Zelaya Molina, Lily Xochitl Anaya Esparza, Luis Miguel Ruvalcaba Gómez, José Martín http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/1588 2024-02-12T19:45:44Z 2023-12-01T00:00:00Z

Title: Identification, Viability, and Membrane Potential during the Cryopreservation of Autochthonous Lactic-Acid Bacteria Isolated from Artisanal Adobera Cheese from Los Altos de Jalisco Authors: Arteaga Garibay, Ramón Ignacio; Delgado Macuil, Raúl Jacobo; Gómez Godínez, Lorena Jacqueline; Cruz Cárdenas, Carlos Iván; Villagrán de la Mora, Blanca Zuamí; Giono Cerezo, Silvia; Zelaya Molina, Lily Xochitl; Anaya Esparza, Luis Miguel; Ruvalcaba Gómez, José Martín Abstract: Abstract Lactic acid bacteria (LAB) comprise a group of microorganisms responsible for developing the sensory and chemical characteristics of several foods and fermented products, particularly cheese. For this reason, after isolation and identification of LAB, validated protocols and procedures for their long-term preservation without compromising its integrity and technological properties, as well as methodologies aiming to assess their viability and integrity are paramount. This study aimed to isolate and identify autochthonous LAB from artisanal Adobera cheese and determine the effect of LAB cryopreservation with thioglycolate broth and glycerol on their viability, membrane integrity, and kinetics. Sixteen LAB were isolated and genetically identified from artisanal cheese samples; eleven of those strains were selected (genus Lactobacillus, Leuconostoc, Streptococcus, and Lactococcus) and included in the cryo-preservation assay. The initial average concentration of the bacterial suspensions was 6.89 log10 CFU mL−1; increasing to 8.9 log10 CFU mL−1 21 days later and slightly reduced at day 42 post-preservation (losses below one logarithm). About 77% of the cells maintained their membrane potential 180 days after their preservation and showed normal Kinetic parameters, maintaining normal adaptation times (Lag phase) and Log phases (9 h average), before reaching the stationary phase. The proposed protocol constitutes a viable alternative to the long-term preservation of different LAB genera because it keeps their viability and integrity. Using flow cytometry allowed the enumeration of viable LAB and provide evidence of the integrity of their membrane. Description: Artículo

2023-12-01T00:00:00Z Anaya Esparza, Luis Miguel Aurora Vigo, Edward F. Villagrán de la Mora, Blanca Zuamí Rodríguez Lafitte, Ernesto Ruvalcaba Gómez, José Martín Solano Cornejo, Miguel Ángel Zamora Gasga, Victor Manuel Montalvo González, Efigenia Gómez Rodríguez, Horacio Aceves Aldrete, César Eduardo González Silva, Napoleón http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/1587 2024-02-12T19:45:19Z 2023-12-01T00:00:00Z

Title: Design of Experiments for Optimizing Ultrasound-Assisted Extraction of Bioactive Compounds from Plant-Based Sources Authors: Anaya Esparza, Luis Miguel; Aurora Vigo, Edward F.; Villagrán de la Mora, Blanca Zuamí; Rodríguez Lafitte, Ernesto; Ruvalcaba Gómez, José Martín; Solano Cornejo, Miguel Ángel; Zamora Gasga, Victor Manuel; Montalvo González, Efigenia; Gómez Rodríguez, Horacio; Aceves Aldrete, César Eduardo; González Silva, Napoleón Abstract: Plant-based materials are an important source of bioactive compounds (BC) with interesting industrial applications. Therefore, adequate experimental strategies for maximizing their recovery yield are required. Among all procedures for extracting BC (maceration, Soxhlet, hydro-distillation, pulsed-electric field, enzyme, microwave, high hydrostatic pressure, and supercritical fluids), the ultrasound-assisted extraction (UAE) highlighted as an advanced, cost-efficient, eco-friendly, and sustainable alternative for recovering BC (polyphenols, flavonoids, anthocyanins, and carotenoids) from plant sources with higher yields. However, the UAE efficiency is influenced by several factors, including operational variables and extraction process (frequency, amplitude, ultrasonic power, pulse cycle, type of solvent, extraction time, solvent-to-solid ratio, pH, particle size, and temperature) that exert an impact on the molecular structures of targeted molecules, leading to variations in their biological properties. In this context, a diverse design of experiments (DOEs), including full or fractional factorial, Plackett–Burman, Box-Behnken, Central composite, Taguchi, Mixture, D-optimal, and Doehlert have been investigated alone and in combination to optimize the UAE of BC from plant-based materials, using the response surface methodology and mathematical models in a simple or multi-factorial/multi-response approach. The present review summarizes the advantages and limitations of the most common DOEs investigated to optimize the UAE of bioactive compounds from plant-based materials. Description: Artículo

2023-12-01T00:00:00Z