Ramón Rodríguez Macías- Professor at University of Guadalajara
Ramón Rodríguez Macías
- Professor at University of Guadalajara
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67
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Introduction
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Publications
Publications (67)
This study focused on analyzing and comparing bioactive compounds, specifically phenolics, in the pulp and leaf of Annona muricata (soursop), a crop highly valued in Latin America for its culinary and traditional uses. Methanolic extractions of leaf and pulp were performed for phytochemical screening, high-performance liquid chromatography (HPLC),...
En México las industrias del tequila y aserrío generan grandes volúmenes de bagazo de agave y corteza de pino; los cuales pueden ser procesados mediante la explosión con vapor, esto permite aprovecharlos en menor tiempo y con mayor utilidad. El objetivo fue evaluar propiedades físicas y químicas de seis sustratos formulados con bagazo de agave y co...
La fijación biológica de nitrógeno (FBN) es un proceso natural que puede suministrar hasta el 90% del nitrógeno necesario para algunas leguminosas, por lo que representa una opción sustentable para reducir los efectos adversos de fertilizantes químicos en la agricultura. Para evaluar la eficiencia en FBN de cinco cultivares de frijol de hábito arbu...
Introduction. Germicidal lamps have a wavelength range of 200-280 nm and can affect the integrity of the DNA of people who handle this equipment. Human lymphocytes are excellent biomonitors of genetic damage and widely used with the comet assay. Objective. Evaluation of genotoxicity in human blood cells exposed to UV-C radiation (254 nm) emitted by...
Introduction:
Triglycerides (TG) represent 98 % of the vegetable oils composition. The evaluation of TG in pumpkin seed extracts is valuable to perceive effects caused by domestication.
Objective:
To compare the triglyceride profile of wild versus domesticated pumpkins by reversed-phase HPTLC.
Materials and methods:
Wild pumpkins (Cucurbita foeti...
Melina (Gmelina arborea) is a fast-growing tree species that is widely used throughout the world for various purposes. The aims of this research were to evaluate the biomass production and C and nutrient pools in G. arborea established in a 15-year-old pure stand (PS) and a mixed stand (MS) in the State of Nayarit, Mexico. Three sampling plots of 1...
Cucurbita foetidissima and C. radicans are scarcely studied wild pumpkin species that grow in arid and semi-arid areas of Mexico and the United States. This study describes the morphological, proximal composition, metabolic finger-prints and seed protein profiles of C. foetidissima and C. radicans fruits collected in the wild during a one-year peri...
Se evaluó la eficiencia en fijación biológica de nitrógeno (FBN) de 27 cepas de Rhizobium spp. recolectadas en frijol silvestre y cultivado del occidente de México, al utilizar como hospedero la variedad de frijol Cuarenteño. El trabajo se realizó bajo malla sombra, se usó un diseño experimental completamente al azar con cinco repeticiones y se eva...
Gmelina arborea (melina) es una especie forestal muy apreciada por su rápido crecimiento, además es de multipropósito por los diversos usos de su madera. El establecimiento de melina en plantaciones puras (PP) ha propiciado la realización de estudios dasométricos y de biomasa; por ende, en México también se han implementado, como alternativa, las p...
Hibiscus sabdariffa (Roselle) is in high demand worldwide due to its beneficial health properties owing to the polyphenols content, mainly in the flower calyx. The objective of this study was to find the best conditions (time and liquid: solid ratio) to extract polyphenols from Roselle using Ultrasound-Assisted Extraction (UAE) (40 kHz, 180 W), wit...
The aim of the present study was to evaluate some physicochemical characteristics of large scale composting process of tequila agave bagasse, and also quantify the population dynamic of bacteria, fungi and actinomycetes througout 300 days. A large windrow of agave bagasse of approximately 195 m (~331 t) was set and regularly monitored. Thereafter a...
Con el objetivo de identificar las propiedades químicas y los antioxidantes de interés en la industria de los biopolímeros se realizó la caracterización química del jugo de cuatro variantes de cladodios de Opuntia megacantha; las variantes presentan dos grados de madurez (tiernos y maduros) y dos manejos diferentes durante su desarrollo (silvestres...
Leaves of semi-domesticated Diospyros digyna and wild D. rekoi trees, sampled seasonally in Mexico in 2014, were analyzed. Metabolic fingerprints revealed higher metabolite diversity in D. rekoi leaves. The TLC bands characteristic of glycosylated flavonoids, predominant in this species, matched the detection of quercetin and quercetin 3-O-glucuron...
As a source of bioactive compounds, species of the genus Lupinus are interesting legumes from a nutritional point of view. Although wild species are abundant and represent a potential source of nutrients and biologically active compounds, most research has focused on domesticated and semi-domesticated species, such as Lupinus angustifolius, Lupinus...
BACKGROUND
In contrast to commercial Diospyros species, Mesoamerican fruit‐producing species are scarcely known, particularly wild species that might harbor desirable traits suitable for breeding. Thus, metabolomic, chemical, and antioxidant profiles of fruits harvested from cultivated Diospyros digyna and wild Diospyros rekoi trees during consecut...
La teca es una planta exótica introducida en México por el valor de su madera. El objetivo del estudio fue calcular el carbono almacenado en la biomasa vege- tal y suelo para luego determinar la composición lignocelulósica de la madera en plantaciones de teca a los seis años en el estado de Nayarit, México. En tres plantaciones se colectó informaci...
em>Guazuma ulmifolia (Malvaceae) es un árbol utilizado en la medicina popular de múltiples países para tratar diversas enfermedades. Se evaluó el efecto inhibitorio de los extractos de la corteza y fruto de esta planta, obtenidos con solventes de polaridad creciente, contra Colletotrichum gloeosporioides y Botrytis cinerea . Se utilizó como criteri...
The potential of Lupinus exaltatus, L. mexicanus, and L. rotundiflorus foliage as green manure in terms of total dry matter production and nitrogen (N) content was evaluated. This study was conducted from November 2015 to March 2016 in Zapopan Jalisco, México. The experiment was established in a randomized 3×7 block factorial design. Whole plants,...
Resumen. Se evaluó el rendimiento y la composición química de seis variedades de Lupinus angustifolius (Haags Blaue, Boregine, Borlu, Probor, Sonate, y Boruta) en Zapopan, Jalisco, México dado que el potencial agronómico de dicha especie todavía no se conoce en dicho país. Los estudios se condujeron durante las estaciones de Otoño-In-vierno de 2012...
The objectives of this study were to determine the chemical and physical properties of tequila blue agave bagasse composted with tequila vinasses’ biosolids in coconut based powder substrates for potted plants and to compare their performance against two commercial substrates. The substrates evaluated included coconut powder, Canadian peat, 100 % c...
México es uno de los principales productores de sandía a nivel mundial. Pero la presencia de patógenos del suelo como nematodos, Fusarium oxysporum f. sp. niveum y el virus de la mancha necrótica del melón (MNSV) representan un serio problema para los productores. El uso de plantas injertadas es una buena alternativa para hacer frente a estos probl...
Mexico is one of the main producers of watermelon worldwide. But, the presence of soil pathogens such as nematodes, Fusarium oxysporum f. sp. niveum and the melon necrotic spot virus (MNSV) represent a serious problem for producers. The use of grafted plants is a good alternative to deal with these problems, helping to increase yield and quality in...
Experimental assessments of grain legume performance are required to identify potential species with high yields and protein content. The purpose of the present investigation therefore, was to assess the potential of six modern blue lupin cultivars (Lupinus angustifolius) in terms of grain yield, protein, and alkaloid content when cultivated on aci...
RESUMEN El estrés oxidativo se asocia al envejecimiento, al deterioro funcional y al aumento en la mortalidad. Esto ha fundamentado estudios sobre daño oxidativo en modelos animales como el nematodo Caenorhabditis elegans (C. elegans). Existen productos naturales con presuntas propiedades antioxidantes capaces de reducir el daño oxidativo, como el...
Protein isolates prepared by alkaline solubilization followed by isoelectric precipitation and freeze-drying from six varieties of Lupinus angustifolius (Haags Blaue, Sonate, Probor, Borlu, Boregine, and Boruta) grown in Mexico were evaluated for functional properties: nitrogen solubility, water-holding capacity (WHC), oil holding capacity (OHC), e...
Objective
To evaluate iron bioavailability of roots and cooked seeds of Lupinus rotundiflorus for human consumption using a low-iron-diet rat model.
Methods
A hemoglobin depletion–repletion test was performed using rats. A standard diet containing 8mg kg-1 of iron was used. Three experimental diets were prepared based on the standard diet: 2.3g of...
This study was performed to test the working hypothesis that the primary determinants influencing seasonal driven modifications in carbon mobilization and other key biochemical parameters in leaves of poorly known Diospyros digyna (Ddg; semi-domesticated; perennial) and D. rekoi (Dre; undomesticated; deciduous) trees are determined by environmental...
Correlation matrix of biochemical and environmental variables in leaves of Diospyros rekoi trees sampled during the spring (A), summer (B), autumn (C) and winter (D) of 2015.
(PDF)
Principal component analysis showing which environmental factors (shown as vectors of varying size) most significantly influenced the overall biochemical variables (shown as dots) of Diospyros rekoi leaves.
(PDF)
Seasonal variation in photosynthetic photon flux density (PPFD) recorded in five (T1-to-T5) Diospyros digyna (Ddg) trees sampled in Taretan, Michoacán, México.
(PDF)
Correlation matrix of biochemical and environmental variables in leaves of Diospyros digyna trees sampled during the spring (A), summer (B), autumn (C) and winter (D) of 2015.
(PDF)
Principal component analysis showing which environmental factors (shown as vectors of varying size) most significantly influenced the overall biochemical variables (shown as dots) of Diospyros digyna leaves.
(PDF)
Mean seasonal irradiation and long-wave radiation recorded in Taretan, Michoacán, México, D. digyna’s sampling site.
(PDF)
Mean seasonal irradiation and long-wave radiation recorded in Teocuitatlán de Corona, Jalisco, México, D. reloi’s sampling site.
(PDF)
Correlations between photosynthetic photon flux density (PPFD) and Chla/ Chlb ratios determined in five (T1-to-T5) Diospyros digyna (Ddg) trees for the winter 2014-15-winter 2015–16 period.
Numbers in red indicate statistically significant correlations.
(PDF)
Correlations between photosynthetic photon flux density (PPFD) and Chla/ Chlb ratios determined in five (T1-to-T5) Diospyros rekoi (Dre) trees for the winter 2014-15-winter 2015–16 period.
Numbers in red indicate statistically significant correlations.
(PDF)
Seasonal variation in photosynthetic photon flux density (PPFD) recorded in five (T1-to-T5) Diospyros rekoi (Dre) trees sampled in Teocuitatlán de Corona, Jalisco, México.
(PDF)
This research aimed to contribute to the knowledge of the penetration pathway of the foliar fertilizer 4-17-17 (NPK) in blue agave. In 1.5-year-old blue agave plants, histological sections were made to identify the main morphological characteristics of the leaf. Leaves were sprayed with the fertilizer-dye fast green solution plus naphthol blue blac...
La asociación Rhizobium-leguminosa es considerada un proceso de alta eficiencia en fijación biológica del nitrógeno atmosférico (FBN) y puede ser capaz de abastecer hasta 90 % de las necesidades de nitrógeno en dichas plantas. El objetivo de esta investigación fue realizar la descripción morfológica y bioquímica de 20 cepas de Rhizobium, nueve proc...
With the aim of understanding the variability of wild populations of Phaseolus lunatus L. collected in Western México, the morphological characterization of 30 populations was carried out. The essay was established in a greenhouse at Zapopan, Jalisco, México, in rows of 4 m in length per population. For this characterization, 10 plants were randoml...
The objective of this research was to assess the quality of the plants produced using the Double-Transplanting system, with different container volumes and fertilizers, for two conifer species -Pinus douglasiana and Pinus devoniana-, whose characteristics and quality indices in the nursery may allow the estimation of the success of their survival i...
Abstract The objective of this study was to evaluate the effect of adding a bacterial inoculum and a handmade additive to sugarcane silage (SCS) on the in situ digestibility of dry matter (DM). The treatments were: T1) sugarcane silage (SCS) and T2) sugarcane silage with 1% inoculum and 1% additive (SCS+). The bacterial inoculum consisted of 10.0%...
Wild lupine consumption has restrictions due to the presence
of alkaloids; however, these components can be reduced with a
suitable thermal treatment. The aim of this research was to determine
the thermal effect on chemical composition and minerals
of wild lupine. Lupinus mexicanus had a reduction in protein
and fat contents of 34.76 to 33.11 and 6...
Wild lupine consumption has restrictions due to the presence of alkaloids; however, these components can be reduced with a suitable thermal treatment. The aim of this research was to determine the thermal effect on chemical composition and minerals of wild lupine. Lupinus mexicanus had a reduction in protein and fat contents of 34.76 to 33.11 and 6...
The aim of this study was to obtain and characterize an ensilage of Lupinus rotundiflorus (Lr) forage / maize stubble (ms) in a 75:25 proportion and to evaluate the productive response of sheep fed with such ensilage. The mixture of the Lr-ms forage with molasses and inoculum was ensiled in 200 liter containers hermetically closed and stored at 22...
The content and profiles of quinolizidine alkaloids in different plant organs of Lupinus exaltatus were analyzed by Gas Chromatography (GC) and Gas Chromatography -Mass Spectrometry (GC-MS). Plant parts (leaves, stems, flowers, and pods) were collected at different stages of the growing plant. The contents of total alkaloids varied in the different...
Se evaluó el efecto de las propiedades edáficas y del contenido nutrimental foliar en el crecimiento de árboles de teca con 2 años de edad en el municipio Ruiz, Nayarit. Se eligieron tres sitios dentro de una plantación y se analizaron física y químicamente las muestras de suelo; también se determinó el porcentaje de minerales en hojas de los estra...
The effect of the edaphic properties and of the foliar content of nutrients on the growth of 2-year old teak trees in the municipality of Ruiz, Nayarit, was assessed. Three sites within a plantation were chosen, and soil samples were physically and chemically analyzed; besides, the percentage of minerals in the leaves of the upper and lower strata...
Blue agave is the raw material for the production of tequila through a distillation process that generates about 400 thousand tons of bagasse, which, in part, is transformed into compost. Micro-propagated agave plants require an adjustment period of about nine months in the nursery or greenhouse shade, for which is grown in a container with a comme...
Changes in physical properties of tezontle reused as a substrate for growing tomatoes were studied (first use T0, first reuse T1 and second reuse T2), as well as the influence of these changes in production of tomato. The research was conducted in a greenhouse in Tlajomulco, Jalisco. A hydroponic system was used from August 2009 to September 2010 w...
A pretreatment in tandem composed of sunlight or sun-like UV-irradiation, freezing-thawing, soda swelling, and boiling (never drying between treatments), was applied to a slurry of ground-up Lupinus rotundiflorus, followed by enzymatic hydrolysis. The effects were studied through an experimental design in which the factors were employed cumulativel...
El objetivo de este estudio fue evaluar el efecto de la adición de un inóculo y un aditivo artesanal, sobre la degradabilidad in situ de la materia seca (MS) en el ensilado de caña de azúcar (ECS). Los tratamientos fueron: T1) ensilado de caña de azúcar sin inóculo ni aditivo, y T2) ensilado de caña de azúcar con 1% de inóculo y el 1% de aditivo. E...
El objetivo de este estudio fue evaluar el efecto de la adición de un inóculo y un aditivo artesanal, sobre la degradabilidad in situ de la materia seca (MS) en el ensilado de caña de azúcar (ECS). Los tratamientos fueron: T1) ensilado de caña de azúcar sin inóculo ni aditivo, y T2) ensilado de caña de azúcar con 1% de inóculo y el 1% de aditivo. E...
El objetivo de este estudio fue evaluar el efecto de la adición de un inóculo y un aditivo artesanal, sobre la degradabilidad in situ de la materia seca (MS) en el ensilado de caña de azúcar (ECS). Los tratamientos fueron: T1) ensilado de caña de azúcar sin inóculo ni aditivo, y T2) ensilado de caña de azúcar con 1% de inóculo y el 1% de aditivo. E...
It is of general interest to produce fermentable carbohydrates from plant biomass. However, obtaining monosaccharides requires some effort, due to the intricate structure of the cell wall lignocellulosic complex. The aim of this study was to apply a simple two-stage hydrolysis process, using only concentrated hydrochloric acid, to generate fermenta...
The objective of this work was to determine the efficiency of conservation of Lupinus exaltatus and L. rotundiflorus forage via silage. Plants of both species, during the seed development phase, were diced (2-4cm) and mixed with maize forage (RM), molasses and inoculum. The mixtures were placed into plastic bottles (micro silages) and were randomly...
Introducción Actualmente, la industria tequilera es una de las más importantes en el estado de Jalisco. La producción de tequila, así como su exportación, han aumentado considerablemente a raíz del reconocimiento de su denominación de origen; sin embargo, entre los múltiples problemas que enfrenta esta industria, se encuentra la generación de resid...
Tequila agave bagasse was characterized and evaluated in order to know its potential as an alternate substrate comparable to commercial peat. A mixture of bagasse and lamb manure 4:1 v/v, was subjected to two biotransformation processes: vermicomposting for 130 days to obtain vermicompost (bv), and conventional composting in order to obtain two dif...
Quinolizidine alkaloids such as lupanine, 13-hydroxylupanine, multiflorine, angustifoline and sparteine, which are present in the species of the genus Lupinus, have been reported to have biopesticide and pharmacological activities. The aim of this study was to quantify the content and variation of the individual alkaloids in seeds of L. mexicanus,...
Due to its nutritional characteristics, Lupinus exaltatus is considered as an alternative source of animal feed in temperate regions. However, the presence of quinolizidine alkaloids in different plant organs limits its consumption. The composition and concentration of alkaloids in leaves, stems, flowers, and inmature fruits of L. exaltatus was det...
Sewage sludge applications to agricultural and forest soils represent an important alternative for reuse of materials with a high nutrient content. The effects of different application rates of sewage sludge as organic fertilizer on corn production and Pinus douglasiana development were studied. The experiments were established in a volcanic soil o...
La posibilidad de reutilizar materiales orgánicos ricos en nutrientes hace de la aplicación de lodos residuales en suelos agrícolas y forestales una alternativa importante. Se evaluaron diferentes dosis de lodos de aguas residuales sanitarias como abono orgánico en la producción de maíz y sobre el desarrollo inicial de Pinus douglasiana. Los experi...
Fertilidad física, prácticas de manejo, capacidad de almacenamiento de agua.
With the purpose of studying the forage potential of Lupinus exaltatus, neutral detergent fiber (NDF), acid detergent fiber (ADF), non-protein nitrogen (NPN), alkaloids and in situ digestibility of seed, foliage, mature pod and whole plant were evaluated in samples from el Nevado de Colima, Mexico. Seed protein content was 38.41 +/- 0.48% with dige...
Con el objetivo de conocer el potencial forrajero de Lupinus exaltatus se realizó un análisis proximal, fibra detergente neutro (FDN), fibra detergente ácido (FDA), nitrógeno no proteico (NNP), alcaloides y digestibilidad in situ en muestras de semilla, follaje, vainas maduras y planta completa colectadas en el Nevado de Colima, México. Las semilla...
