Julio Alberto Solís-Fuentes

Universidad Veracruzana | UV · Instituto de Ciencias Básicas

Sulfate‐reducing microorganisms (SRM) may transform dissolved metal ions through a biological process. The mining industry, especially when it possesses aqueous effluents with a high concentration of sulfates and some dissolved metals, is an ad hoc environment for the use of SRM to promote the recycling of these liquid effluents once these ions are...

Metal mining extraction and concentration need water. The recycling of liquid effluents reduces its consumption. This recycled water must contain low concentrations of metals. This project’s first objective was to start up a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor for biotransforming metal sulfates into metal sulfides of eff...

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Studies on the removal of polyphenols from sugarcane vinasses using three upflow anaerobic sludge blanket (UASB) reactors operating isothermally at temperatures of 45, 55, and 65 °C are presented. The procedure started evaluating the stability of the reactors through the quantification of four important parameters of the process: temperature, pH, a...

According to a Ghana thesis written in 2008: “Mining is viewed as one of the important economic activities which have the potential of contributing to the development of economies. At the same time, the environmental and health impacts of mining on surrounding communities have been a major concern to governments, the general public and stakeholder...

Lipids, and particularly vegetable fats and oils, are very important compounds for human life and health and are highly desirable for their effect on the functional properties of food too. Mango kernel seed is a waste available in large quantities in the tropical and subtropical productive regions of the world. Mango seed kernel has shown to have i...

Several genera of the Annonaceae family are characterized by containing bioactive components and are widely used in traditional medicine. Annona muricata L., a plant native to South America and widely cultivated in the tropical regions of the world, is the only one of this genus whose fruit, appreciated and consumed fresh, is also processed industr...

Bagasse activated carbon (BAC) was used for the purification of raw cane juice (guarapo) to improve the quality of jaggery (panela), a healthy sweetener, due to its nutritional properties, widely consumed in many parts of the world. Ultrafiltration was used to purify the cane juice, for comparison and possible complementary purification treatment....

The composition, thermal stability and phase behavior of tamarind (Tamarindus indica) seed oil were analyzed to contribute to the exploration of their potential uses. The oil was extracted from the kernel of the tamarind seed with hexane, and its main physical, chemical and thermal properties were analyzed by infrared spectrometry, gas chromatograp...

A laboratory scale cleaner technology for raw sugar or muscovado production that uses sugarcane bagasse activated carbon (BAC) for raw sugarcane juice purification was studied. The treatment with BAC, substituted for the chemical and thermal treatments used in the current manufacture of cane sugar. It is a gentler process that protects the nutritio...

The authors had an academic meeting to face the challenge to provide clean water and to dispose of wastewaters once treated to reduce pollution impacts and to recycle the treated effluent. Chemistry plays a substantial role to the solution of removing pollutants since chemical reactions are crucial to increase the final quality of the treated efflu...

The process for extracting sugarcane juice (Saccharum officinarum) represents the point of greatest contamination in sugarcane mills. Sodium dithiocarbamate also known as metam-sodium or MS is added to inhibit the growth of microorganisms especially Leuconostoc mesenteroides which is responsible for forming polysaccharides. Metam-sodium, upon decom...

En este trabajo se estudió la clarificación de jugo de caña (guarapo1 y jugo claro) empleando quitina y quitosana obtenidas de exoesqueletos y cefalotórax de camarón como agentes precipitantes. La obtención de la quitina se realizó mediante desproteinización y desmineralización química de los exoesqueletos y la quitosana por desacetilación de la qu...

Picramnia species have been appreciated in traditional medicine for its healing properties to counteract the effect of some gastric and intestinal disorders as well as in the malaria and syphilis treatment. Picramnia polyantha is a rare species that is found in various regions of Mesoamerica. Extracts of stem and leaf of this species were separated...

In this paper the thermal stability of the color of purified, guarapoa and clarified, sugar cane juices after treatment with activated carbon and ultrafiltration was studied, and the color stability during the storage of fructose syrup made from them with S. cerevisiae invertase treatment, were evaluated. The results showed that the purification tr...

Some kinetic data indicate that thermophilic archaea might be of use in anaerobic reactors where microbial biota can metabolize contaminants in secondary effluents of industrial processes and transform them into methane-rich biogas, producing natural gas as a cleaner energy source and bioremediating the effluents. This chapter discusses research in...

The chemical composition of the waste from mamey sapote (Pouteria sapota) and its oil extracted from the seed (MSSO) of ripe and unripe fruits, was studied. The MSSO from ripe fruits was dry-fractionated, and the thermal and phase behaviors of its fractions and their mixtures with other known natural fats were analyzed. The main components of the m...

In this work, the hydrolysis of sucrose from clarified sugar cane juice and further purified juice was studied in a tubular reactor packed with immobilized invertase in calcium alginate. An analysis of response surface for the desirability function of conversion to glucose and fructose (Yp/s) and reactor volumetric productivity (Qp) in a Box–Behnke...

The kinetics of invertase from S. cerevisiae in complex systems of sugarcane was studied as a base of knowledge to produce juices and syrups rich in fructose directly from sugarcane juices that can compete with high fructose corn syrups. For this, solutions of pure sucrose as a model, clarified sugar cane juice, and clarified and purified cane juic...

This chapter evaluates mango seed kernel not only for its qualities as a natural food but also for the biological activity of some of its constituents, which have shown positive impacts, directly or indirectly, on health and nutrition. By its biological nature, mango seed kernel has a composition that responds to varietal and phenotypic variations....

This chapter highlights the therapeutic potential of soursop seeds. Scientific studies have confirmed the presence of alkaloids, acetogenins, and cyclopeptides, compounds of great importance in these seeds that have attracted pharmacological interest. The seeds also contain a significant amount of oil, the composition and physical and chemical prop...

In this work some physicochemical properties and the thermal behavior and stability of sour sop or guanabana ( Annona muricata ) seed “almond” oil were studied by means of chemical, DSC and TG analysis. The results showed that the almond has 2.5% ash, 17.9% crude fiber, 15.7% protein, 26.0% de carbohydrates and 37.7% oil (dry base). The composition...

En esta investigación se estudiaron las condiciones básicas para la elaboración de jarabes fructosados a partir de guarapo1 o jugo de caña de primera extracción que se obtiene en los ingenios azucareros. El procedimiento incluyó procesos de purificación del guarapo mediante adsorción con carbón activado complementado con ultrafiltración en membrana...

In this paper, the chemical composition, the main physicochemical properties, phase behavior and thermal stability of rambutan (Nephelium lappaceum L.) seed fat were studied. These results showed that the almond-like decorticated seed represents 6.1% of the wet weight fruit and is: 1.22% ash, 7.80% protein, 11.6% crude fiber, 46% carbohydrates, and...

En esta investigación se estudió la transesterificación alcalina del aceite obtenido a partir de la "almendra" de la semilla del zapote mamey (Pouteria sapota) para la producción de biodiesel. Se extrajo y se analizó el rendimiento y propiedades físicas y químicas del aceite crudo. Se realizaron pruebas de transesterificación del aceite catalizadas...

In this study, the kinetics of isothermal crystallization of mango ( Mangifera indica ) almond seed fat var. Manila (MAF) was analyzed, within the theoretical context of the Sestak-Berggren model, the Avrami Equation and its modification by Khanna and Taylor. The results showed that the induction times for the formation of crystalline nuclei increa...

Rice bran is considered in Mexico as “waste”, useful only for feeds. As considerable amounts of oil are available in rice bran, it might be worthwhile to stabilize it and extract the edible oil before using it for feedstuffs. Precisely these oils are responsible for rice bran rapid deterioration, particularly in climatic conditions such as those pr...

In this paper, some important properties, from the application point of view, of mango (Mangifera indica) almond fat var. Manila (MAF) were analyzed by differential scanning calorimetry and X-ray diffraction techniques. The thermal profile, the solid fat content (SFC) and the predominant polymorphism of MAF samples, previously characterized chemica...

In the present study three agro-industrial residues were selected due to their different levels of reuse and relevance for Mexico and some other developing countries, according to their physicochemical, nutritional and biological characteristics to exemplify the potential of agro-industrial wastes as sources of edible fats and oils. Rice ( Oryza sa...

This paper deals with the physicochemical characterization, including thermal behaviour, by differential scanning calorimetry of mango seed almond fat (MAF), alone and in mixtures with cocoa butter (CB). Results showed that mango almond seeds contain about 5.28-11.26% (dw) of fat. The refraction index is 1.466, the saponification index 189.0 and th...

Samples of cacao butter (CB), mango seed almond fat (Mangifera indica var. Manila) (MAF), and zapote mamey seed almond fat (Pouteria sapota) (ZMAF), were analyzed for their fatty acid composition and were mixed according to a 3-factor simplex-lattice design. Mixtures were stabilized, their fusion and crystallization thermal behavior, and solid fat...

The effect of some variables on traditionally clarified sugarcane juice chromophore substances removal efficiency by the use of sugarcane bagasse complexed with diethylaminoethyl chloride, DEAE, was studied. An experimental model (Box-Behnken type) with three independent variables was applied. These variables were the ratio between the unit weight...

Pouteria zapota is an American tropical fruit tree, and its fruit zapote-mamey is becoming a more appreciated product that derives in its cultivation, industrialization, and consumption. One of its non edible portions, the seed, contains a lipid-rich almond that has been historically used by the native American people of the tropical regions for me...

Solvent extraction of oil from the zapote mamey almond (Pouteria sapota) was studied as a contribution to the identification and evaluation of non-conventional, preferably edible, sources of fats and oils. To fit the data to a second-order regression model, and for analysis of response surface methodology, a Box and Wilson experimental design was u...