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Search Results: 1 - 10 of 4522 matches for " Arturo Castellanos-Ruelas "
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Protein Fortification of Corn Tortillas: Effects on Physicochemical Characteristics, Nutritional Value and Acceptance  [PDF]
Abril Lecuona-Villanueva, David A. Betancur-Ancona, Luis A. Chel-Guerrero, Arturo F. Castellanos-Ruelas
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.312217
Abstract: The aim of this study was to evaluate the texture of corn dough as well as the nutritional quality and acceptance of corn cakes (tortillas) made either with a readymade commercial corn flour (CCF) or with a traditional way (nixtamal) both fortified with lys + tryp (L + T) or with a protein concentrate from Phaseolus lunatus added with L + T (PC + L + T). All treatments were analyzed to investigate the physical properties of the dough and tortillas as well as their physicochemical and nutritional quality. Results showed that cohesion was affected (p < 0.05) in the fortified tortillas made with CCF decreasing from 34.3 to 28.4 and 27.4 N for Control, L + T and PC + L + T, respectively; tortillas made with nixtamal showed no difference. Adhesion was not affected by treatments. Weight loss increased only in the fortified tortillas made with CCF (p < 0.05). Rolling capacity was not affected by fortification. The tension of tortillas increased with the fortification being the highest value 0.96 N. Color was not affected in tortillas made with CCF (p < 0.05); changes observed in those made with nixtamal remained in an acceptable range. In vitro digestibility was improved by the fortification obtaining the highest values in tortillas made with CCF and fortified with PC + L + T. Acceptance was greater for tortillas fortified with L+T alone. Protein fortification of tortillas made with either CCF or nixtamal is feasible using either L + T together or in combination with a PC from Phaseolus lunatus improving their nutritional value without negative effects on their physicochemical characteristics or acceptance.
Physicochemical and Functional Properties of Dehydrated Japanese Quail (Coturnix japonica) Egg White  [PDF]
Maira Segura-Campos, Roberto Pérez-Hernández, Luis Chel-Guerrero, Arturo Castellanos-Ruelas, Santiago Gallegos-Tintoré, David Betancur-Ancona
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.43039
Abstract:

Physicochemical, functional and digestibility analyses were done of dehydrated quail egg white to determine its possible practical applications. Quail egg white was dehydrated by air convection using one of two temperatures and times: M1 (65, 3.5 h), M2 (65, 5.0 h), M3 (70, 3.5 h) and M4 (70, 5.0 h). Lyophilized quail egg white was used as a standard. All four air-dried treatments had good protein levels (92.56% to 93.96%), with electrophoresis showing the predominant proteins to be lysozyme, ovalbumin and ovotransferin. Denaturation temperatures ranged from 81.16 to 83.85 and denaturation enthalpy values from 5.51 to 9.08 J/g. Treatments M1-4 had lower water-holding (0.90 - 2.95 g/g) and oil-holding (0.92 - 1.01 g/g) capacities than the lyophilized treatment (4.5 g/g, 1.95 g/g, respectively). Foaming capacity was pH-dependent in all five treatments, with the lowest values at alkaline pH and the highest (153% to 222%) at acid pH (pH 2). Foam stability was lowest at acid pH and highest at alkaline pH. Emulsifying activity in the air-dried treatments was highest at pH 8 (41% - 46%). Emulsion stability was pH-dependent and

Physicochemical and Functional Characterization of Mucuna pruries Depigmented Starch for Potential Industrial Applications  [PDF]
Maira Rubi Segura-Campos, Sonia Marina López-Sánchez, Arturo Castellanos-Ruelas, David Betancur-Ancona, Luis Chel-Guerrero
International Journal of Organic Chemistry (IJOC) , 2015, DOI: 10.4236/ijoc.2015.51001
Abstract: Starch is a very important biopolymer in the food industry. The velvet bean (M. pruriens) is an excellent potential starch source containing approximately 520 g starch per kg. The objective of this study was to evaluate the physicochemical and functional properties of velvet bean depigmented starch. The starch granules appear oval and spherical shaped. The colour registered L*, a*, b* values of 44.9, 0.324 and 0.341 respectively. The chemical composition registered values of moisture, ash, fat, protein, fibre and NFE of 110.5, 5.8, 5.7, 0.0, 34 and 954.5 g/kg respectively, as well as amylose levels of 215.3 g/kg. Gelatinization onset (To), peak (Tp) and final (Tf) temperatures were of 74.23°C, 80.57°C and 86.39°C. The solubility (3.1% - 16.2%), swelling power (SP) (2.86% - 16.17%) and water absorption capacity (WAC) (2.67 - 15.95 g water/g starch) were directly correlated to temperature (60°C - 90°C). The enthalpy values (4.10 - 13.47 j/g) were directly correlated to the time (1 - 21 days). The retrogradation increased as time increased. The viscosity of M. pruriens depigmented starch decreased slightly during the heating stages and then increased during cooling and the refrigeration and freezing stability registered syneresis ranges from 17.65 to 23.18 mL/50mL and from 16.4 to 22.6 mL/50mL respectively, indicating that the depigmented starch was unstable in heating-cooling processes.
Heavy Metal Quantification in Renal Tissue of Patients in the State of Yucatan and Its Association with Urolithiasis
Luis A. May-Ix,J. Gabriel Rosado-Rubio,Martha Medina-Escobedo,Arturo F. Castellanos-Ruelas
ISRN Toxicology , 2012, DOI: 10.5402/2012/548256
Abstract:
Composición en ácido graso alfa linolénico (w3) en huevo y carne de aves empleando chia (salvia hispánica l.) En el alimento
Salazar-Vega,Mayday I; Rosado-Rubio,J. Gabriel; Chel-Guerrero,Luis A; Betancur-Ancona,David A; Castellanos-Ruelas,Arturo F;
Interciencia , 2009,
Abstract: productive performance and lipid composition of the egg yolk and body tissues was evaluated in commercial strains of poultry fed with whole chia (salvia hispanica l; hich). two experiments where carried out. in the first one 36 babcock laying hens were assigned to three treatments: 0 (control), 7.5 and 15.0% hich in the diet for 16 weeks. in the second experiment cobb broilers were fed with diets including 0, 5 and 10% hich during 6 weeks. bird performance data and lipid composition of the egg yolk and body tissues were analyzed by means of variance analysis using a totally randomized design. laying hens fed hich showed less egg production (p<0.05) compared with the control group; nevertheless, egg weight increased (p<0.01). linolenic acid increased in egg yolk lipids in treatments that included hich in the diet, and palmitic acid was reduced (p<0.05). in the second experiment, growth rate of broilers was not affected by the treatments and lipid composition of tissues showed the same trend as the one observed with laying hens. it is concluded that modification of fatty acid composition of poultry products is feasible by means of the inclusion of hich in the feed of both laying hens and broilers.
Diagnóstico de la concentración mineral en tejido óseo de ovinos en pastoreo en el Estado de Yucatán, México
Turriza-Chan, José L.;Castellanos-Ruelas, Arturo F.;Rosado-Rubio, J. Gabriel;Hetedia y Aguilat, Manuel;Cabrera-Torres, Eduardo;
Agrociencia , 2010,
Abstract: studies on the mineral profile of fodder consumed by grazing ruminants must be completed with information on its effect on the tissues since deficiencies and mineral imbalances are reflected in the body composition and consequently in the productivity of animals. the aim of this study was to quantify four minerals on the twelfth rib of hair sheep grazing in the state of yucatán during the rainy season (june-october). fifty farms of sheep breeders were sampled in 47 municipalities and 139 rib samples were collected through biopsies. the contents of ca, k, cu and fe were determined by using atomic absorption spectrophotometry. results were statistically analyzed using a completely randomized experimental design with a trifactorial arrangement, including the effect of the geographical area (centre, east, west and south), the physiological status of sheep (weaning, yearling and adult), soil type (luvisol, vertisol, cambisol, rendzina, litosol), double and triple interactions. the geographical location showed no effect (p> 0.05) on the ca content; the average was 42.7 %, above 36 % (considered normal). in the eastern and central zones, 33 % and 27 % of the samples recorded a ca content below normal. in addition, the average concentrations of k (0.017 %), cu (0.68 ppm) and fe (4.6 ppm) were lower than normal levels. weaning showed the lowest ca content (p< 0.05) and the highest of k (p< 0.05) on the rib. there was no effect (p> 0.05) of the soil type on the content of ca, k, cu and fe. it was concluded that there are ca deficiencies in the central zone which affect the lambs mostly at weaning. deficiencies of k, cu and fe were also detected in bone.
Efecto de la suplementación fosforada sobre la ganancia de peso de bovinos en pastoreo en Yucatán, México.
Víctor M. Segura Correa,Arturo F. Castellanos Ruelas
Veterinaria México , 1999,
Abstract: El objetivo del trabajo fue estimar el mín imo de fósforo (P) que deben consumir toretes en pastoreo en la zona oriente de Yucatán, México, para mejorar su velocidad de crecimiento. Se utilizaron 40 bovinos machos, enteros, con un peso inicial promedio de 240.8 ± 63.2 kg (± D.E.), los cuales fueron distribuidos en 4 tipos de suplemento mineral fosforado que propiciaron consumos decrecientes de P. Los tratamientos fueron: alto (A), mediano (M), bajo (B) y un testigo (T) que recibió un suplemento mineral libre de P. Los suplementos fosforados contenían 4.5% de P a partir de un ortofosfato de calcio (21% P). El estudio tuvo una duración de un a o y se dividió en 3 partes, según la época: sequía (marzo-mayo), lluvia (junio-octubre) y nortes -sequía (diciembre-abril). El resultado de la ganancia de peso de cada individuo durante cada época del a o se analizó mediante el método de mínimos cuadrados, en un modelo lineal que incluyó el efecto fijo del tratamiento y utilizó como covariable el peso inicial. El contenido de P en el zacate Guinea (Panicum maximum) pastoreado por los animales, osciló entre 0.09% y 0.07%. Sólo durante la época de lluvias se encontró efecto (P<.05) del tipo de suplemento mineral consumido sobre la ganancia de peso; el tratamiento M incrementó la ganancia de peso sobre el T en 31.8%, al mantener un consumo de P de 3.3 g/animal/día. Un consumo mayor de P no mejoró la respuesta animal.
Vegetación marina en la elaboración de bloques multinutritivos para la alimentación de rumiantes
Castellanos Ruelas, Arturo F.;Cauich Huchim, Félix;Chel Guerrero, Luis A.;Rosado Rubio, J. Gabriel;
Revista mexicana de ciencias pecuarias , 2010,
Abstract: the objective of the present study was to assess the effect on nutritional value and hardness due to inclusion in multinutritional blocks (mb) of marine vegetation, molasses, urea and calcium hydroxide (caoh). marine vegetation was gathered at the coast of yucatán. this material was rinsed with fresh water and sun dehydrated. mbs were manufactured including 9.5 % of marine vegetation, plus soybean hulls meal, ground corn, molasses, calcium orthophosphate, salt, vegetable oil and a mixture of minerals and vitamins; calcium hydroxide was added as agglutinant. a factorial 3*2*3 experimental design with three replicates was used, where molasses 35.0, 37.5 and 40.0 %; urea 6 and 9 % and caoh 5, 7 and 9 % were factors and levels. hardness (kg maximum pressure) of bms was measured using a 4411 universal testing machine (instron). results were analyzed through the least square method, including effects of the already mentioned factors and their interactions. results showed that marine vegetation boasts high protein and mineral contents. when either molasses content is more than 35 % or caoh more than 5 %, mbs hardness decreases (p<0.01). the same is true for urea content of more than 6 % (p<0.05). as a conclusion, it can be acknowledged that marine vegetation can be used as a protein and mineral source for manufacturing mbs, obtaining materials showing adequate hardness.
Evaluación de un probiótico para el control de Salmonella en pollos de engorda en Yucatán
Arturo F. Castellanos Ruelas,María de la Luz Murguía Olmedo
Veterinaria México , 1999,
Abstract: Se llevó a cabo un experimento con la finalidad de evaluar un aditivo alimenticio elaborado con oligosacáridos y dextrano, utilizando pollos de engorda alimentados con dietas con dos niveles de proteína cruda. Se midió el efecto sobre la productividad de las aves y la presencia de Salmonellas en el tracto digestivo y en sangre. Para ello, se utilizaron 172 pollitos, machos, recién nacidos, Peterson Hubbard, alojados en un ambiente tropical. Seis se sacrificaron y se tomaron como muestra el primer día, y otros seis al séptimo día de edad, con la finalidad de diagnosticar la presencia de Salmonella en el contenido digestivo. El resto de las aves se asignaron al azar a 4 tratamientos bajo un arreglo factorial 2 x 2. El primer factor correspondió al tipo de glúcidos adicionados a las dietas: MHF y azúcar de ca a. El segundo factor consistió en dos niveles de proteína cruda: el sugerido por los cuadros de alimentación y un nivel proteínico inferior al anterior en 1%, compensándolo con el uso de aminoácidos cristalinos. A las 3, 5 y 6 semanas de edad se realizó el muestreo de excretas tomadas de 10 aves por tratamiento, mediante el empleo de hisopos cloacales. A las 6.5 semanas de edad se realizó un muestreo de suero. Las muestras fueron sometidas a diagnóstico bacteriológico. Los resultados obtenidos indicaron que el peso final y el consumo de alimento no se vieron afectados por el tipo de glúcidos adicionados (P>.05), en cambio el nivel proteínico más bajo mejoró estas variables (P<.05). Sólo se detectó presencia de Salmonellas en el muestreo llevado a cabo a las 5 semanas, en el cual se encontró que 87% de las aves alimentadas con azúcar de ca a resultaron positivas, lo mismo que 25% del tratamiento MHF (P<.01). Se concluye que el empleo de MHF permite reducir la presencia de Salmonella en el tracto digestivo de pollos de engorda en un ambiente tropical y expuestos a este riesgo, sin modificar la productividad de las aves.
Comparación de la concentración mineral en forrajes y suelos de zonas ganaderas del estado de Quintana Roo, México
Eduardo J. Cabrera Torres,Edgar E. Sosa Rubio,Arturo F. Castellanos Ruelas,álvaro O. Gutiérrez Baeza
Veterinaria México , 2009,
Abstract: El objetivo del estudio fue determinar el contenido de macro y microminerales en tres zonas del estado de Quintana Roo, norte (N), centro (C) y sur (S) y determinar los principales forrajes cultivados por productores de bovinos. Se muestrearon 45 unidades ganaderas de las que se obtuvieron 108 muestras de forrajes y 68 de suelos. Los minerales se determinaron mediante espectrometría de absorción atómica y el P por colorimetría. Las variables se analizaron mediante el procedimiento GLM y los promedios se compararon empleando la prueba de Duncan. Los forrajes encontrados más frecuentemente fueron: Brachiaria brizantha, 73.3%; Cynodon plectostachyus, 31.1%; Pennisetum purpureum, 31.1%; Panicum maximun, var Tanzania, 26.6%; P. maximun, var Mombasa, 15.5%; P. maximun, var Guinea, 13.3%; Brachiaria mutica, 11.1%; y Brachiaria humidicola, 11.1%. Se encontraron contenidos bajos de Ca, P y Mg en las pasturas asociadas con un bajo nivel de estos minerales en los suelos, mientras que los contenidos de K y Fe se encontraron en niveles elevados tanto en los forrajes como en los suelos. Asimismo, se encontraron defi ciencias zonifi cadas de Mn (N), Zn (C) y Cu (C y S). Se concluye que existen fuertes desbalances en el contenido de minerales de los forrajes, que pueden ser subsanados aportando a los animales en pastoreo complementos minerales con Ca, P y Mg, libres de K y Fe, y dependiendo de la zona del estado se deberá a adir Mn, Zn y Cu.
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