Person: Soret Lafraya, Beatriz
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Soret Lafraya
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Beatriz
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Agronomía, Biotecnología y Alimentación
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IS-FOOD. Research Institute on Innovation & Sustainable Development in Food Chain
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0000-0001-9214-8595
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2246
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Publication Open Access Skeletal muscle stem cells from animals I. basic cell biology(Ivyspring International Publisher, 2010) Dodson, Michael V.; Hausman, Gary J.; Guan, LeLuo; Du, Min; Rasmussen, Theodore P.; Poulos, Sylvia P.; Mir, Priya; Bergen, Werner G.; Fernyhough, Melinda E.; McFarland, Douglas C.; Rhoads, Robert P.; Soret Lafraya, Beatriz; Reecy, James M.; Velleman, Sandra G.; Jiang, Zhihua; Producción Agraria; Nekazaritza EkoizpenaSkeletal muscle stem cells from food-producing animals are of interest to agricultural life scientists seeking to develop a better understanding of the molecular regulation of lean tissue (skeletal muscle protein hypertrophy) and intramuscular fat (marbling) development. Enhanced understanding of muscle stem cell biology and function is essential for developing technologies and strategies to augment the metabolic efficiency and muscle hypertrophy of growing animals potentially leading to greater efficiency and reduced environmental impacts of animal production, while concomitantly improving product uniformity and consumer acceptance and enjoyment of muscle foods.Publication Open Access Efecto de la alimentación con dietas ricas en acidos grasos poliinsaturados sobre el desarrollo del tejido graso de terneros(Asociación Interprofesional para el Desarrollo Agrario, 2007) Sayed, S.; Abadía Durán, Silvia; Mendizábal Aizpuru, José Antonio; Arana Navarro, Ana; Soret Lafraya, Beatriz; Albertí, P.; Purroy Unanua, Antonio; Producción Agraria; Nekazaritza EkoizpenaLa carne de vacuno obtenida de terneros cebados con pienso presenta un menor valor de la relación de ácidos grasos poliinsaturados/saturados, beneficioso para la salud humana, que la obtenida de los temeros criados en pasto (Wood et al., 1999). Para contrarrestar este factor se está estudiando la utilización de materias primas con alto contenido en ácidos grasos poliinsaturados (por ejemplo semilla de lino) en las dietas utilizadas en el cebo de terneros. Por otra parte, cuando se utilizan materias primas que pueden dar lugar a grasas insaturadas, de fácil enranciamiento y que pueden acortar la vida útil de la carne, se recomienda la adición en la dieta de los animales de antioxidantes como, por ejemplo, la vitamina E (Robbins et al., 2003). El presente trabajo, englobado en un proyecto más amplio donde se estudia el efecto que la adición de lino y de vitamina E en el pienso de terneros tiene sobre el crecimiento, engrasamiento y características de la carne, se centra en profundizar sobre los posibles efectos que pudieran tener la utilización de estas dietas sobre el desarrollo y la celularidad del tejido graso.Publication Open Access Lipid metabolism, adipocyte depot physiology and utilization of meat animals as experimental models for metabolic research(Ivyspring International Publisher, 2010) Dodson, Michael V.; Hausman, Gary J.; Guan, LeLuo; Du, Min; Rasmussen, Theodore P.; Poulos, Sylvia P.; Mir, Priya; Bergen, Werner G.; Fernyhough, Melinda E.; McFarland, Douglas C.; Rhoads, Robert P.; Soret Lafraya, Beatriz; Reecy, James M.; Velleman, Sandra G.; Jiang, Zhihua; Producción Agraria; Nekazaritza EkoizpenaMeat animals are unique as experimental models for both lipid metabolism and adipocyte studies because of their direct economic value for animal production. This paper discusses the principles that regulate adipogenesis in major meat animals (beef cattle, dairy cattle, and pigs), the definition of adipose depot-specific regulation of lipid metabolism or adipogenesis, and introduces the potential value of these animals as models for metabolic research including mammary biology and the ontogeny of fatty livers.Publication Open Access Predicting beef carcass fatness using an image analysis system(MDPI, 2021) Mendizábal Aizpuru, José Antonio; Ripoll, Guillermo; Urrutia Vera, Olaia; Insausti Barrenetxea, Kizkitza; Soret Lafraya, Beatriz; Arana Navarro, Ana; Institute on Innovation and Sustainable Development in Food Chain - ISFOODThe amount and distribution of subcutaneous fat is an important factor affecting beef carcass quality. The degree of fatness is determined by visual assessments scored on a scale of five fatness levels (the SEUROP system). New technologies such as the image analysis method have been developed and applied in an effort to enhance the accuracy and objectivity of this classification system. In this study, 50 young bulls were slaughtered (570 ± 52.5 kg) and after slaughter the carcasses were weighed (360 ± 33.1 kg) and a SEUROP system fatness score assigned. A digital picture of the outer surface of the left side of the carcass was taken and the area of fat cover (fat area) was measured using an image analysis system. Commercial cutting of the carcasses was performed 24 h post-mortem. The fat trimmed away on cutting (cutting fat) was weighed. A regression analysis was carried out for the carcass cutting fat (y-axis) on the carcass fat area (x-axis) to establish the accuracy of the image analysis system. A greater accuracy was obtained by the image analysis (R2 = 0.72; p < 0.001) than from the visual fatness scores (R2 = 0.66; p > 0.001). These results show the image analysis to be more accurate than the visual assessment system for predicting beef carcass fatness.Publication Open Access Food banks against climate change, a solution that works: a case study in Navarra, Spain(MDPI, 2022) González Peñalver, José Miguel; Armijos Piedra, María Alejandra; Soret Lafraya, Beatriz; Martínez Aldaya, Maite; Agronomía, Biotecnología y Alimentación; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Agronomia, Bioteknologia eta ElikaduraWorldwide, more than 1.3 billion tonnes of food are wasted each year, which is equivalent to releasing 4.4 Gt of CO2 equivalents (CO2e). In this context, the Food Bank of Navarra (FBN) annually avoids the waste of approximately 3000 tons of perfectly consumable food. The aim of this study was twofold: on the one hand, to analyse the carbon footprint of the FBN and, on the other hand, to perform a comparative analysis of the greenhouse gas (GHG) emissions in two scenarios, “with” and “without” the actions of the FBN, in order to identify and quantify the environmental benefits, in terms of GHG emissions reduction, associated with the reduction in food waste. The analyses were conducted in two different years. The carbon footprint associated with the FBN’s activities was 147 t of CO2e in the year 2018. The quantification of GHGs in the scenario “without the FBN” showed that if the FBN did not exist 4715 t of CO2e would have been emitted. The results obtained in consecutive years were similar, highlighting the importance of the FBN—not only in social terms but also environmental terms—as it prevented a large amount of GHGs from being emitted into the atmosphere. A detailed account of the carbon emission reduction associated with the food bank’s operations and the knowledge of the benefits involved could boost their positive effects in facilitating the integration of their activities into policies aimed at climate neutrality.Publication Open Access Adipose tissue modification through feeding strategies and their implication on adipogenesis and adipose tissue metabolism in ruminants(MDPI, 2020) Urrutia Vera, Olaia; Mendizábal Aizpuru, José Antonio; Alfonso Ruiz, Leopoldo; Soret Lafraya, Beatriz; Insausti Barrenetxea, Kizkitza; Arana Navarro, Ana; Agronomia, Bioteknologia eta Elikadura; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Agronomía, Biotecnología y Alimentación; Universidad Pública de Navarra / Nafarroako Unibertsitate PublikoaDietary recommendations by health authorities have been advising of the importance of diminishing saturated fatty acids (SFA) consumption and replacing them by polyunsaturated fatty acids (PUFA), particularly omega-3. Therefore, there have been efforts to enhance food fatty acid profiles, helping them to meet human nutritional recommendations. Ruminant meat is the major dietary conjugated linoleic acid (CLA) source, but it also contains SFA at relatively high proportions, deriving from ruminal biohydrogenation of PUFA. Additionally, lipid metabolism in ruminants may differ from other species. Recent research has aimed to modify the fatty acid profile of meat, and other animal products. This review summarizes dietary strategies based on the n-3 PUFA supplementation of ruminant diets and their effects on meat fatty acid composition. Additionally, the role of n-3 PUFA in adipose tissue (AT) development and in the expression of key genes involved in adipogenesis and lipid metabolism is discussed. It has been demonstrated that linseed supplementation leads to an increase in alpha-linolenic acid (ALA) and eicosapentaenoic acid (EPA), but not in docosahexaenoic acid (DHA), whilst fish oil and algae increase DHA content. Dietary PUFA can alter AT adiposity and modulate lipid metabolism genes expression, although further research is required to clarify the underlying mechanism.Publication Open Access Adiposity and adipogenic gene expression in four different muscles in beef cattle(Public Library of Science, 2017) Martínez del Pino, Lara; Arana Navarro, Ana; Alfonso Ruiz, Leopoldo; Mendizábal Aizpuru, José Antonio; Soret Lafraya, Beatriz; Producción Agraria; Nekazaritza EkoizpenaAnatomical site and divergent functionalities of muscles can be related to differences in IMF content, metabolism and adipogenic gene expression. Then, potential differences in different muscles in beef cattle were studied. As a second objective, the main sources of experimental variability associated to RT-qPCR results were analyzed following a nested design in order to implement appropriate experimental designs minimizing gene expression variability. To perform the study Longissimus thoracis (LT), Semitendinosus (SM), Masseter (MS), Sternomandibularis (ST) and subcutaneous adipose tissue (SAT) samples of Pirenaica young bulls (n = 4) were collected for IMF, collagen and protein quantification, analysis of adipocyte size distribution and gene expression (PPARG, CEBPA, FAPB4 and WNT10B). A greater IMF content was observed in MS and SM muscles, which had a bimodal adipocyte size distribution while it was unimodal in the muscles LT and ST. This suggest that the different IMF accretion in the muscles studied might be related to different rates of hyperplasia and hypertrophy and that IMF might develop later in LT and ST muscles. The former differences were not mirrored by the expression of the genes analyzed, which might be related to the different contribution of mature and non-mature adipocytes to the total gene expression. When comparing IMF and SAT gene expression, late and early developing tissues respectively, expression of PPARG, CEBPA and FABP4 was higher in the SAT, in agreement with bigger cell size and numbers. The variability study indicates that the analytical factors that add higher variability to the gene expression are the sampling and RT and therefore, it would be appropriate to include those replicates in the design of future experiments. Based on the results, the use of MS and SM muscles could allow less expensive experimental designs and bigger sample size that could permit the detection of lower relevant differences in gene expression.Publication Open Access Textile characteristics of fiber from Huacaya alpacas (Vicugna pacos)(Universidad Nacional de Trujillo (Perú). Facultad de Ciencias Agropecuarias, 2019) Paucar Chanca, Rufino; Alfonso Ruiz, Leopoldo; Soret Lafraya, Beatriz; Mendoza Ordóñez, G.; Alvarado Quezada, F.; Agronomía, Biotecnología y Alimentación; Agronomia, Bioteknologia eta ElikaduraFiber from alpacas represents a substantial component of economic output for South American countries. In this study it determined the textile characteristics of fibers obtained from Huacaya alpacas raised at the South American Camelids Research and Development Center-Lachocc (CRDC-Lachocc) located at The National University of Huancavelica (UNH). Fleece samples were obtained from the mid-side rib area of 74 white alpacas (42 females and 32 males) of varying ages. The Average Fiber Diameter (AFD), Standard Deviation of the Average Fiber Diameter (SDAFD), Fiber Diameter Coefficient of Variation (FDCV), Comfort Factor (CF) and Staple Length (SL) were measured as textile characteristics and related to sex and age group. Most of the fleece samples could be classified as baby alpaca fleece according to the Peruvian Technical Standard classification (231.301.2014). Sex had no influence on any textile characteristic (p > 0.05). Meanwhile, age affected only AFD and CF (p < 0.05). Together the results indicated that alpacas farmed at CRDC-Lachocc had good potential to produce high quality fibers.Publication Open Access Conformación y engrasamiento de terneros de raza Retinta y cruzados RetintaxPirenaica y RetintaxLimusín(Asociación Interprofesional para el Desarrollo Agrario, 2005) Mendizábal Aizpuru, José Antonio; Alzón, M.; Arana Navarro, Ana; Albertí, P.; Soret Lafraya, Beatriz; Purroy Unanua, Antonio; Producción Agraria; Nekazaritza EkoizpenaEn el presente trabajo se comparan terneros de raza Retinta en pureza y cruzados con dos razas de aptitud cárnica más mejoradas, la Limusín y la Pirenaica, con la finalidad de profundizar en el conocimiento de los parámetros de conformación y engrasamiento que muestran estos genotipos cruzados.Publication Open Access Indicators and recommendations for assessing sustainable healthy diets(MDPI, 2021) Martínez Aldaya, Maite; Ibáñez Moya, Francisco C.; Domínguez Lacueva, Paula; Murillo Arbizu, María Teresa; Rubio Varas, María del Mar; Soret Lafraya, Beatriz; Beriain Apesteguía, María José; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Institute for Advanced Research in Business and Economics - INARBEResearch coupling human nutrition and sustainability concerns is a rapidly developing field, which is essential to guide governments' policies. This critical and comprehensive review analyzes indicators and approaches to 'sustainable healthy diets' published in the literature since this discipline's emergence a few years ago, identifying robust gauges and highlighting the flaws of the most commonly used models. The reviewed studies largely focus on one or two domains such as greenhouse gas emissions or water use, while overlooking potential impact shifts to other sectors or resources. The present study covers a comprehensive set of indicators from the health, environmental and socio-economic viewpoints. This assessment concludes that in order to identify the best food option in sustainability assessments and nutrition analysis of diets, some aspects such as the classification and disaggregation of food groups, the impacts of the rates of local food consumption and seasonality, preservation methods, agrobiodiversity and organic food and different production systems, together with consequences for low-income countries, require further analysis and consideration.