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1
artículo
Publicado 2018
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A cross-sectional epidemiological investigation was carried out to determine the risk factors associated with the dissemination of brucellosis to humans in milk processing centres and slaughterhouses in seven cantons of the province of Manabí, Ecuador, between September and November 2015. A census was conducted to quantify farms processing milk, milk processing centres and slaughterhouses. A total of 119 dairy farms, seven slaughterhouses and seven milk processing centres were selected. They were characterized in terms of the types of products produced and on the presence of risk factors as causes of brucellosis in humans. The presence of antibodies against Brucella spp was determined in raw milk by the milk ring test. Results showed that 97.6% of the units make a single product (artisanal cheese). The presence of 85.0% of risk factor was found in milk processing dairies, value higher t...
2
artículo
Publicado 2016
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This article seeks to highlight the difficulties in the chemical processing of dairy products in the experience of a project “Capacity Building for Improving the Competitiveness of Market Chains Dairy in Huaytará Province”, Department of Huancavelica. Which she worked with the communities of the highlands which had craft supplies, lacking proper techniques and with proper oversight in terms of hygiene in the treatment of milk which was strengthened and raised awareness through and provides them with training and training and technical assistance from a multidisciplinary at various annexes Cordova District team. It is suggested that more often this kind of scope of knowledge is carried out by qualified professionals who make a fundamental task for the sake of improving the quality of life of these communities, since the raw material is milk you get a countless products as described i...
3
artículo
Publicado 2016
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El presente artículo pretende dar a conocer las dificultades en los procesamientos químicos de productos lácteos en la experiencia del proyecto “Desarrollo de capacidades para el mejoramiento de la competitividad de las cadenas productivas de lácteos en la provincia de Huaytará”, en el departamento de Huancavelica. Este proyecto se trabajó con las comunidades de las zonas altoandinas, quienes contaban con insumos artesanales, careciendo de técnicas adecuadas e higiene en el tratamiento de la leche. Se fortaleció y concienció, a través de la capacitación y asistencia técnica por parte de un equipo multidisciplinario, a los distintos anexos del distrito de Córdova. Se sugiere que se realice continuamente este tipo de alcances de conocimientos por parte de los profesionales calificados, que hacen una labor fundamental en bien del mejoramiento de la calidad de vida de estas ...
4
tesis de grado
Publicado 2023
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The document presents the results of the evaluation of the classification process of milk samples through the modeling of machine learning techniques. The objective of this research was to discriminate the presence or absence of adulterants, which allowed obtaining adequate damages for human consumption. Also, speed up and specify the inspection process of said samples. The relevance of this study can be understood from the product under analysis: milk. This is for mass consumption, especially among children. Due to the above, it is considered relevant to efficiently demonstrate that quality products are provided to the population and this document is a contribution to the reliability of the integrity of dairy products.
5
tesis de grado
El presente trabajo de investigación busca contribuir en la diversificación del uso de Sacha Inchi, una planta nativa de la Amazonía con alto valor nutricional y como alimento funcional por su aporte ácidos grasos esenciales como la omegas 3 y 6, que ayudan a disminuir el colesterol malo y su beneficio para mantener un sistema cardiovascular saludable. El estudio plantea una investigación de efectos fijos y con dos factores (nivel de sustitución de leche de Sacha Inchi 10%, 20%, 30%, 40%, 50% y cultivo lácteo 1%, 2% ,3% durante la fermentación) para lo cual se evaluaron 15 tratamientos mediante análisis físico químicos: Sólidos totales, proteína, pH, acidez titulable (A.O.A.C, 1995), sinéresis por centrifugado a 2500 rpm durante 20 min (DÍAZ, 2004) y viscosidad aparente, medidos en un viscosímetro (RVDY- III ULTRA) usando spindle N°04 a 10 rpm y temperatura de 10°C. La ...
6
artículo
Efficacy of pasteurization and freezing on the inactivation of bovine leukosis virus present in milk
Publicado 2020
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The aim of this work was to evaluate the efficacy of pasteurization and freezing on the inactivation of the bovine leukosis virus present in milk. A bioassay was carried out using 16 sheep. The animals received an intraperitoneal leukocytes inoculum from cow milk with cells infected with bovine leukosis virus (BVL) previously treated with one of the virus inactivation methods. Four study groups were evaluated: a) control group: milk without prior treatment, b) pasteurization group: milk treated by pasteurization, c) 12-hour freezing group: milk treated by freezing for 12 hours, d) 36-hour freezing group: milk treated by freezing for 36 hours. In the week 10 of the inoculation, all animals (4/4) in the control group and 3/4 of the animals in the 12 h freezing group were seropositive for VLB, while no animal was seropositive (0/4) for VLB in the pasteurization and 36-hour freezing groups. ...
7
artículo
Efficacy of pasteurization and freezing on the inactivation of bovine leukosis virus present in milk
Publicado 2020
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The aim of this work was to evaluate the efficacy of pasteurization and freezing on the inactivation of the bovine leukosis virus present in milk. A bioassay was carried out using 16 sheep. The animals received an intraperitoneal leukocytes inoculum from cow milk with cells infected with bovine leukosis virus (BVL) previously treated with one of the virus inactivation methods. Four study groups were evaluated: a) control group: milk without prior treatment, b) pasteurization group: milk treated by pasteurization, c) 12-hour freezing group: milk treated by freezing for 12 hours, d) 36-hour freezing group: milk treated by freezing for 36 hours. In the week 10 of the inoculation, all animals (4/4) in the control group and 3/4 of the animals in the 12 h freezing group were seropositive for VLB, while no animal was seropositive (0/4) for VLB in the pasteurization and 36-hour freezing groups. ...
8
artículo
Publicado 2016
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The National Maternal Perinatal Institute (INMP), within the strategies implemented with the objective of reducing the morbidity andmortality rate with the technical advice of Brazil, inaugurated in 2010 the first Human Milk Bank of the country, with the purpose offeeding With mother’s milk from her own mother or with breast milk donated pasteurized, totally or partially to the preterm born inour institution, primarily to those born with a weight ≤ 1500 grams, as well as to post-surgical newborns. The BLH Responsible foractions of promotion, protection and support to breastfeeding, performs the processes of procuring (donor recruitment, lactationcounseling, etc); Processing or pasteurization of human milk (from this process comes safe milk) and fractionation and distributionaccording to medical indication. In order to carry out our work, we have the support of our collection centers,...
9
artículo
Publicado 2016
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The National Maternal Perinatal Institute (INMP), within the strategies implemented with the objective of reducing the morbidity andmortality rate with the technical advice of Brazil, inaugurated in 2010 the first Human Milk Bank of the country, with the purpose offeeding With mother’s milk from her own mother or with breast milk donated pasteurized, totally or partially to the preterm born inour institution, primarily to those born with a weight ≤ 1500 grams, as well as to post-surgical newborns. The BLH Responsible foractions of promotion, protection and support to breastfeeding, performs the processes of procuring (donor recruitment, lactationcounseling, etc); Processing or pasteurization of human milk (from this process comes safe milk) and fractionation and distributionaccording to medical indication. In order to carry out our work, we have the support of our collection centers,...
10
artículo
Publicado 2024
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The objective of this applied experimental research was to evaluate the microbial stabilization of pre-sonicated fresh milk by low temperature thermal treatment (≤60 °C), to reduce its perishability. Fresh milk was sonicated with an energy density of 0.5 kJ/mL before being thermally treated at low temperature (40 to 60 °C) for different times; The pre-sonicated and thermally treated milk was evaluated for its content of Total Mesophilic Aerobes (AMV) and Total Coliforms (TC), and the effect of the treatment on microbial populations was modeled using the Bigelow Model. It was determined that treatments between 40 and 45 °C generated population increases; but those treatments above 55.04 °C for AMV and 49.28 °C for CT initiated microbial inactivation processes, both temperatures being the lowest inactivation temperatures reported so far for fresh milk. The increase in thermal sensit...
11
artículo
Publicado 2020
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The effect of multinutritional blocks (BMN) based on agro-industrial residues on the production and composition of bovine milk in a tropical region of Peru was evaluated. For the elaboration of the BMN, agro-industrial residues from the processing of rice (rice polishing) and coconut (cake) were used. Twelve native cows were used to graze in paddocks with Brachiaria brizantha distributed in two groups (A and B) of six animals during two periods of 21 days each. Two treatments were established: T0 (grazing without supplementation) and T1 (grazing plus supplementation with BMN). During the first period, group A received T1 and group B received T0, while in the second period the reverse was done. Daily milk production (kg/day), milk composition (protein, fat, lactose, total solids, %) and the level of urea in milk (mg/100 ml) were measured. The change-over design was used to analyze the res...
12
artículo
Publicado 2020
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The effect of multinutritional blocks (BMN) based on agro-industrial residues on the production and composition of bovine milk in a tropical region of Peru was evaluated. For the elaboration of the BMN, agro-industrial residues from the processing of rice (rice polishing) and coconut (cake) were used. Twelve native cows were used to graze in paddocks with Brachiaria brizantha distributed in two groups (A and B) of six animals during two periods of 21 days each. Two treatments were established: T0 (grazing without supplementation) and T1 (grazing plus supplementation with BMN). During the first period, group A received T1 and group B received T0, while in the second period the reverse was done. Daily milk production (kg/day), milk composition (protein, fat, lactose, total solids, %) and the level of urea in milk (mg/100 ml) were measured. The change-over design was used to analyze the res...
13
tesis doctoral
Publicado 2014
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El presente estudio se centra en el análisis de la interacción de la parte preliminar de la cadena láctea (granjeros y lecherías) en el Valle del Mantaro (andes centrales del Perú), para comprender las posibles limitaciones que enfrentan estos dos actores para la implementación de controles y prácticas de calidad de la leche, y para evaluar “ex ante“ cómo las diferentes estrategias para mejorar la calidad de la leche podrían afectar los ingresos de los productores y procesadores. El análisis se basa en tres estudios adicionales realizados en el campo entre 2012 y 2013. Nuestro trabajo ha demostrado que la presencia de una doble cadena, que combina los mercados formales e informales, tiene un impacto directo en la producción de leche a nivel técnico y organizacional, que afecta las posibilidades de que las pequeñas lecherías formales establezcan contratos escritos que in...
14
tesis de grado
Publicado 2024
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Este trabajo aborda la mejora de la eficiencia en la recepción de leche en una pequeña empresa de productos lácteos mediante estrategias de ingeniería de calidad y estandarización de procesos. El problema principal identificado fue la entrada de leche defectuosa, afectando negativamente la eficiencia y calidad del producto final. Para solucionar este problema, se implementaron tres herramientas clave: mapeo de procesos, control estadístico de procesos (CEP) y estandarización de procedimientos. El mapeo de procesos permitió identificar ineficiencias y optimizar el flujo de trabajo. El CEP se utilizó para monitorear y asegurar la calidad en tiempo real. La estandarización de procedimientos garantizó uniformidad y consistencia en todas las etapas del proceso de recepción. Además, se mejoraron las prácticas de almacenamiento y transporte de la leche cruda desde el proveedor has...
15
artículo
Publicado 2018
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Se realizó una investigación epidemiológica transversal para determinar los factores de riesgo asociados a la diseminación de brucelosis a los humanos en centro procesadores de leche y mataderos de siete cantones de la provincia Manabí, Ecuador, entre septiembre y noviembre de 2015. Se realizó un censo para determinar las unidades que elaboraban subproductos lácteos y los mataderos. Se seleccionaron 119 lecherías dedicadas a la elaboración de productos lácteos artesanalmente, siete mataderos y siete centros procesadores de productos lácteos, y se caracterizaron en cuanto a los tipos de productos que elaboran y la presencia de factores de riesgo como causales de brucelosis en humanos. Se determinó la presencia de anticuerpos contra Brucella spp en la leche utilizada como materia prima mediante la prueba del anillo. El 97.6% de las unidades elaboran un solo producto (queso arte...
16
tesis de grado
Publicado 2020
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In the present study, there is an analysis of the installation of a production factory of flavored quinoa milk in Peru. In first place, there is a big opportunity to take advantage of: the growth in the consumption of cereals such as quinoa, in order to elaborate a product out of it. This drink has a high content of nutrients like proteins, fibers, vitamins and minerals which will benefit the consumer’s health. In the first chapter, the problem to solve with the production of this drink will be explained, as well as the objectives and reaching of the investigation. The main objective of the study is to determine the technical, economic, financial, social and environment viability of the implementation of the factory. In the second chapter, the competitive market of the flavored quinoa milk will be analyzed, deepening into its characteristics and benefits. Inside the market study, the p...
17
artículo
Publicado 2007
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El objetivo del presente estudio fue determinar la prevalencia del virus de la diarrea viral bovina (VDVB) y de animales persistentemente infectados (PI) en bovinos productores de leche en la Irrigación de Majes, Arequipa. En la primera fase del estudio, se colectaron 204 muestras de leche de tanque (una por hato) en la planta local de procesamiento de leche, para la detección de anticuerpos contra el VDVB mediante la prueba de ELISA indirecta. En la segunda fase se seleccionaron de modo arbitrario a 57 hatos con anticuerpos contra el VDVB con densidades ópticas (DO) iguales o mayores a 0.900. Se colectaron 286 muestras de suero sanguíneo de estos hatos para conocer el estado serológico de cada animal y la búsqueda de animales PI mediante ELISA indirecta y ELISA de captura, respectivamente. En la tercera fase se obtuvieron muestras de suero de la totalidad de terneras y vaquillas (...
18
artículo
Publicado 2007
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The objective of this study was to determine the prevalence of bovine viral diarrhoea virus (BVDV) and persistently infected (PI) animals in dairy herds located in Majes, Arequipa, Peru. In the first phase, 204 bulk tank milk samples from to 204 herds were collected al the local commercial processing plant in Majes for detection of antibodies against BVDV by indirect ELISA test. In the second phase, 286 blood samples were collected from 57 strong positive (Optical Density [OD] ? 0.900) herds for the detection of antibodies against BVDV and in PI animals by the indirect and capture ELISAs respectively. In the third phase, blood samples were collected from all animals ranging from 6 to 24 months of age from three herds that had at least one PI animal. The prevalence of BVDV in the 204 herds was 98.0 ± 1.9% (200/204), and the level of antibodies ranged from 0.300 to 2.350 OD. The 47.2% (13...
19
artículo
Publicado 2019
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The aim of this study was to demonstrate, by flow cytometry, that the percentage of alpaca spermatozoa with high mitochondrial membrane potential (MMP) is significantly reduced after the cryopreservation process. Forty-one alpaca testicles were obtained from a local slaughterhouse in the Ninacaca district, Pasco, Peru. The spermatozoa were recovered from the tail of the epididymis with an extender based on skim milk and only those samples with minimum 30% motility and 50x106 spermatozoa/ml were cryopreserved. The MMP evaluation was carried out before and after the cryopreservation process. Each sample was incubated for 10 minutes at 38 °C with MitoTracker Deep Red (100 nM) to determine the percentage of high MMP by imaging flow cytometry. The effect of cryopreservation on the percentage of spermatozoa with high MMP was evaluated by a paired t-student test and the percentage of motility ...
20
artículo
Publicado 2024
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The effect of Guarania genre music on productive performance and animal well- being (milk production and serum cortisol) was evaluated. In total, 17 animals of various breeds and in different stages of lactation were used, with a crossover design, where each animal received both treatments in each period (inclusion and non-inclusion of music in the milking process). Each period was two weeks. Daily controls of milk production were carried out (two milkings per day) and blood samples were obtained weekly to determine serum cortisol concentrations. The average milk production of the group of cows without music application was 19.7 L/day and in the group of cows with music application it was 20.4 L (p=0.008). 96% of cortisol concentrations had a level less than 1 µg/dl, considered within the reference range, and without significant difference between treatments.
