Francisco Hernandez

Colegio de Postgraduados campus Cordoba

The valorization of byproducts from the sugarcane industry represents a potential alternative method with a low energy cost for the production of metabolites that are of commercial and industrial interest. The production of exopolysaccharides (EPSs) was carried out using the yeast Suhomyces kilbournensis isolated from agro-industrial sugarcane, and...

Objective: To determine the economic threshold for Diatraea spp. in the Córdoba-Golfo sugarcane growing region in Veracruz, Mexico. Design/Methodology/Approach: During the 2020-2021 production cycle, we established 21 sampling plots to measure damage percentage due to borer larvae in sugarcane stalks. Based on these measurements, we calculated the...

In recent years, laccase enzymes have been widely explored due to their potential for industrial application in several fields. Laccases have historically been produced by fungal strains, but studies of laccases produced by bacteria have shown that their unique characteristics make them very beneficial for industrial use. This chapter explores how...

El barrenador del tallo (Diatraea spp.) es la principal plaga de la caña de azúcar a nivel mundial. En la región cañera Córdoba-Golfo, Veracruz, México la distribución y daño por el complejo Diatraea spp., ha sido poco estudiado lo que causa sesgos en la estimación del impacto. El objetivo del estudio fue determinar el daño espacio-temporal por lar...

Objective: To evaluate the effect of biological control agents (BCA) and two biological formulations (Bio-Terra and Bio-CNPR) against the phytopathogens found in the soil of huacle chili (Capsicum annuum) plantations, in order to obtain healthy seedlings. Design/Methodology/Approach: The following design variables were evaluated: germination (%), d...

Background. Sugarcane (Saccharum officinarum L.) is one of the main crops in Mexico; during the harvest 2021-2022, 54.6 million tons of raw milled sugarcane were industrialized, ranking sixth in production worldwide. However, during processing, several products and co-products are generated, including sugarcane bagasse, that is used to produce elec...

The demand for natural pigments in the food industry is increasing. Color and stability of anthocyanins of chagalapoli (Ardisia compressa K.) fruit added to an isotonic beverage as microcapsules and free extract were evaluated at two temperatures (4 and 25 °C) in the absence of light. Anthocyanins degradation followed first-order kinetics in the ev...

Artificial or synthetic seed consists of a coating that protects plant tissues, being an alternative for commercial propagation of sugarcane. The objective of this study was to develop a system for synthetic seed production of sugarcane. A first experiment determined the optimal nodal segments size (1.0, 2.5, and 5.0 cm long) in bud emergence; a se...

The present study aimed to explore the preferences for lemon consumption, as well as the different reactions that consumers show regarding basic needs, emotions, and attitudes. A survey created with Google tools was distributed through social networks. A total of 522 responses were collected, 43% from males and 57% from females. The results showed...

En México, la caña de azúcar (Saccharum spp.) es un cultivo agroalimentario importantes, debido a su relevancia económica y social en el campo. México ocupa el sexto lugar mundial en producción de caña de azúcar, con un volumen de 51.3 millones de toneladas de caña bruta molida en 2021, y el estado de Veracruz registra la mayor producción a nivel n...

In Mexico, sugarcane (Saccharum spp.) is one of the most notable agrifood crops, due to the economic importance it represents, sucrose and ethanol are systematically produced from it. However, a modernization scheme is currently required through productive diversification, valorizing and taking advantage of the generated co-products. In this scheme...

For the exploration of production systems of biodegradable polymers, 11 bacteria were isolated from the process of obtaining sugar, of which three showed the ability to produce polyhydroxyalkanoates by the confirmatory methods of staining with Sudan Black and fluorescence appearance in a Petri dish in the presence of Nile blue. The strains with the...

El cultivo de la caña de azúcar (Saccharum spp.) es afectada por diversos factores sanitarios representando una limitante principal que genera pérdidas superiores a 30% de la producción (Osmany et al., 2014).

El Colegio de Postgraduados Campus Córdoba se ubicada en el suroeste del país, donde se genera una importante actividad agrícola en la región. La agroindustria como actividad económica dota de valor agregado a productos del sector primario siendo muy importante en este contexto. En la región una de las actividades económicas más importantes es el c...

The fruit of Ardisia compresssa K. is called chagalapoli and has a high anthocyanin content, with a profile dominated by malvidin derivatives. The aims of this study were: a) to determine optimal conditions (ethanol concentration, pH, and sonication time) for anthocyanin extraction from chagalapoli fruit (CF) using response surface methodology, b)...

Exopolysaccharides (EPSs) are classified into two groups, homopolysaccharides (HoPs) and heteropolysaccharides (HePs).They are produced by lactic acid bacteria (LAB) and used in a range of industrial applications, including the medical andfood industries. The HoPs are extracellular EPSs, and their production depends on extracellular enzymes, wherea...

Biological control of the Mexican fruit fly, Anastrepha ludens, is mainly carried out by releasing parasitoids, such as Diachasmimorpha longicaudata, and by applying entomopathogenic fungi (EPF), such as Metarhizium anisopliae, Beauveria bassiana, or Isaria fumosorosea, which can be applied to the soil or dispersed using infective devices. The comb...

The use of microorganisms for biological pest control as biological control agents (BCAs) and biopesticides was developed worldwide in the 1960s. Despite the abundance of reviews published on this topic, no meta-analysis using bibliometric tools has been published. The objective of this study was to determine patterns of research on microorganisms...

In the present work, bioethanol was produced by sugar fermentation obtained from water hyacinth using a novelty hybrid method composed of steam explosion and enzymatic hydrolysis, using hydrolytic enzymes produced by solid-state fermentation and water hyacinth as substrate. The highest activity, 42 U for xylanase and 2 U for cellulase per gram of d...

The sugarcane agri-food industry boosts the Mexican economy in producing regions. Basing its relevance in sugar production yields. However, by-products are not widely exploited leaving an opportunity for diversification. In this study, three microorganism isolates (A, B, and C) were obtained from sugarcane kefir; the morphology of isolates B and C...

p> Background. Heterorhabditis and Steinernema are two genera of entomopathogen nematodes used as effective biocontrollers in pest insect control. Target. To describe the morphometry, morphology and thus the molecular description of a new Heterorhabditis indica isolate, for the cultivation of sugarcane and its possible contamination against insect...

Background. Heterorhabditis and Steinernema are two genera of entomopathogen nematodes used as effective biocontrollers in pest insect control. Target. To describe the morphometry, morphology and thus the molecular description of a new Heterorhabditis indica isolate, for the cultivation of sugarcane and its possible contamination against insect pes...

The Mexican fruit fly, Anastrepha ludens Loew, is a significant pest in mango and citrus production areas of Mexico. In this study, we evaluated the effects of some geographic characteristics, rainfall period, soil micro-environmental, and soil coverage variables on the occurrence of entomopathogenic fungi (EPF) associated with A. ludens larvae in...

El cultivo de la caña de azúcar (Saccharum spp.) es afectada por diversos factores sanitarios representando una limitante principal que genera pérdidas superiores a 30% de la producción (Osmany et al., 2014).

This review was realized to generated diversification proposals for the sugar industry and was carried out through an exhaustive review of scientific literature. The xopolysaccharides (EPS) are naturally biopolymer used in a range of industrial applications. In the EPS, levan and inulin may have a highlight, are molecules conformed by glucose and f...

In Mexico, sugarcane is the main agri-food industry; it is relevant for boosting the economy of sugarcane-producing regions. However, international competitiveness has negatively impacted this industry, a fact that has generated the need for diversification, namely efforts to use co-products and sub-products. In this study, three microorganism isol...

Sugarcane is one of the main crops worldwide, and it has an important impact on environmental issues. A bibliometric mapping analysis of the research on sugarcane was carried out, using data on the titles, abstracts, and keywords of articles published in leading journals and other peer-reviewed documents available in the SCOPUS database from 1858 t...

Evaluación de dos cepas de nematodos (Steinernematidae, Heterorhabditidae) para el control del salivazo (Hemiptera: Cercopidae) en caña de azúcar. Nematropica 49:83-90. El salivazo o mosca pinta es una plaga importante de la caña de azúcar que comprende un complejo de especies en los géneros Aeneolamia y Prosapia (Hemiptera: Cercopidae). El control...

The emission of nitrous oxide (N2O), carbon dioxide (CO2) and ammonia (NH3) in tropical dairy cattle (CLT) excreta, fed with different percentages of crude protein (CP), was quantified using static cameras. Sampling was performed at different times of day (7:00, 10:00, 13:00, 16:00, and 19:00 local time -LT-). The statistical model employed was a c...

Papaya (Carica papaya L.) is a tropical fruit with a high nutritional value. Current problems affecting its cultivation are the limited number of exploited varieties and its susceptibility to pests and diseases. The papaya MSXJ hybrid is resistant to pests and diseases, and its organoleptic characteristics are prominent compared with most papaya ge...

Screening of the fungal strains, Aspergillus niger, Trichoderma harzianum, and Rhizopus microsporus var. chinensis for pro-tease production was realised by monitoring the presence of clear zones on skimmed milk agar plates. Additionally, screen-ing of the radial growth on vanilla waste, cane bagasse, and pineapple crown plates was performed. Radial...

El control biológico se utiliza para la regulación de poblaciones de insectos plaga y evitar la inducción de resistencia de los insectos por el uso excesivo de agroquímicos, así como solventar problemas de residuos para la producción orgánica de alimentos. Existen más de 750 especies de hongos entomopatógenos que pueden utilizarse para el control b...

Biological control is used for the regulation of pest insect populations and to avoid the induction of insect resistance due to the excessive use of agrochemicals, as well as to solve waste problems for the organic production of food. There are more than 750 species of entomopathogenic fungi that can be used for the biological control of pests, bei...

Este trabajo analizó las volátiles mediante la obtención de extractos de hojas verdes de caña de azúcar en estado maduro de ocho variedades de caña de azúcar y de dos especies de pastos mediante hidrodestilación con una trampa Clevenger. Las variedades de caña de azúcar utilizadas en este estudio fueron: CP 72-2086, MEX 69-290, RD 75-11, ITV 92-142...

This work analyzed the volatiles by obtaining extracts of green leaves of sugar cane in the mature state of eight varieties of sugarcane and of two pasture species by hydrodistillation with a Clevenger trap. The varieties of sugar cane used in this study were: CP 72-2086, MEX 69-290, RD 75-11, ITV 92-1424, MEX 79-431, L 77-50, COLPOS CT MEX 05-223,...

El objetivo de este estudio fue evaluar la patogenicidad de los nematodos, Heterorhabditis sp. (CPVG13) y Steinernema spp. (CPVC12, CPVC13) sobre el salivazo, Aeneolamia albofasciata y determinar su persistencia en el suelo de tres ingenios azucareros Potrero, Constancia y Motzorongo, del estado de Veracruz. En el primer experimento la patogenicida...

Mosca pinta es considerada el principal insecto plaga en caña de azúcar, esto debido al daño mecánico ocasionado por la inserción de su estilete en las hojas. Esta investigación está enfocada en la respuesta de la planta ante la presencia de dicho hemíptero, donde se involucra la producción de calosa que expresa β-glucanos y alta presencia de espec...

Description of the subject. Pleurotus species are cultivated on lignocellulosic substrates, in which contaminant fungi such as Trichoderma spp. are common. A selective substrate for Pleurotus provides the necessary conditions for protection against contaminants. Studies show that Paenibacillus polymyxa and other thermophilic bacteria benefit from t...

Removing solid lime particles (SLP) may help to prevent polluting characteristics of corn cooking wastewater (nejayote). The objective of this study was to evaluate the polluting characteristics of nejayote and characteristics of nixtamal, masa and tortilla using SLP‐free solutions (SLPF) for the nixtamalisation process. Two SLPF treatments: calciu...

Open burning of sugarcane (Saccharum officinarum) has a large impact in regional atmospheric pollution and global climatic change. In this research, pollutant emissions from sugarcane residues burning were measured in order to determine the emission factors (EFs) of elemental carbon (EC), organic carbon (OC), 18 polycyclic aromatic hydrocarbons (PA...

Due to the importance of the use of lactic acid bacteria (LAB) in the food industry, the objective of this study was to isolate, characterize and identify microorganisms associated with the fruit of tempesquitle from the mixteca region. A first macroscopic and biochemical characterization led to the identification of eight gram-positive cultures an...

The main purpose of the present study was to characterize the juice and rind of the Persian lime (Citrus latifolia) with different quality of samples, by means of the Photoacoustic Spectroscopy (PAS) technique. In agreement to the Mexican quality standards, the samples under study were classified into four degrees of quality; i.e. Extra, Second, Th...

El cultivo de caña de azúcar (Saccharum officinarum L.) es importante en México en términos de superficie sembrada, empleos generados y productores que participan en su cultivo. Este artículo plantea que el rendimiento por hectárea a nivel municipal del cultivo de caña de azúcar, no se atribuye únicamente a factores de manejo del cultivo y ambienta...

A Galleria mellonella (L.) baiting method was used to collect the entomopathogenic nematode, Steinernema ralatorei, from sugarcane (Saccharum officinarum L.) areas in the municipality of Paso del Macho, Veracruz, Mexico. Based on morphological, morphometric and molecular analyses, we found that three isolates of the nematode were similar and belong...

The habitat and adult host plants of 3 Ocoaxo species (Hemiptera: Cercopidae) are reported for the first time. In addition, their possible link to a disorder of forest pines we called “pine decline” in Mexico is discussed. The distribution of Ocoaxo varians (Stål), Ocoaxo assimilis (Walker), and Ocoaxo near fowleri (Lallemand) is described based on...

In order to increase the success in the knowledge creation and learning process among sugarcane growers, a 120-h pilot program was created and implemented for a private factory in the southern region of Mexico. A total of 30 growers and 4 technicians of this private factory were chosen to participate in the program for the adoption of technical inn...

Longissimus dorci (LD) samples of different origin (imported and domestic) with pre-treatments (imported meat stored at -18°C for 6months, domestic meat stored at -18°C for 10days, and domestic meat stored at 4°C for 24h) were cooked as barbacoa and frozen using two treatments (air blast and liquid immersion) and then evaluated after 30days of stor...

La competitividad es un fenómeno multifactorial y subjetivo que cambia conforme al tiempo y el contexto donde se lleve a cabo la medición. El sector agropecuario presenta características propias que requieren ser consideradas al momento de modelar dicho fenómeno. En este sentido, el presente trabajo pretende identificar diversos métodos de medición...

Chili peppers are an important part of the Mexican diet. Till today they are integrated in the cultural traditions inherited froem pre-Columbian ancestors. In any case, scientific studies about all the varieties of chili peppers are not yet finished by far. In this work, we used photoacoustic spectroscopy to specifically characterize Capsicum annuu...

The cultivation of sugarcane (Saccharum officinarum L.) is important in Mexico in terms of acreage, jobs created and producers involved in its cultivation. This article argues that, the yield per hectare at the municipal level of sugar cane cultivation is attributed not only to crop management factors and environmental, but requires considering fac...

In this chapter, three main pests of sugar cane in Mexico are reviewed: Stalk borers, Rodents and Spittle bugs. Several control methods implemented in the past and reevaluated in the present are reviewed.

Viscera of sheep (Ovis aries) used in the Central zone of Mexico to cook a typical dish named "pancita", despite its relevance there are few studies that have analyzed the viscera food safety. Chopped viscera (heart, heart cover, lung, liver, kidney, curdle, intestines, stomach, librillo) were packed under vacuum conditions in plastic bags of 60 μm...

IntroductionThe fungus Conidiobolus coronatus (C. coronatus) has an extensive distribution of habitats and hosts. It is found saprophytically, and attacks insects and mammals, including humans. Although there are few reports on humans, and they are restricted to tropical areas. The aim of this work was to determine whether genetic variation exists...

The objective of this work was to evaluate 14 native e Trichoderma genus isolates (Tn) obtained from the rhyzosphere of sugarcane plantations in accordance with their inhibitory in vitro effect on dual cultures against a commercial strain of Trichoderma harzianum (T22 strain). The native isolates with the highest inhibition levels were the named Pa...

Tamarind (Tamarindus indica L.) for its easy adaptation and resistance to drought is part of tropical agro-ecosystems as a food source for livestock and a complementary income of farmers. Nationally, the dynamics of production of tamarind has been modified, decreasing in the south and consolidated in Jalisco. The objective of this study was to iden...

The The findings of a research regarding the discussion about the Mexican's identity are presented. The values that characterize them and the socio-demographic and territorial aspects explaining the differences between "the others' vision" and "my own vision" based on values were studied on a sample of 629 inhabitants of two municipalities of the s...

During 2006, laboratory studies were conducted to evaluate the pathogenicity of seven isolates of Pandora neoaphidis (Remaudière & Hennebert) against the cabbage aphid, Brevicoryne brassicae (L.). Two isolates were obtained from the aphids Rhopalosiphum padi (L.) (TEXRP1), and Myzus persicae (Sulzer) (TEXMP1), infesting broccoli (Brassica napus (L....

In this study, there were two objectives: a) analyzing the social networks of vegetable producers in the middle zone of San Luis Potosí, México, in order to determine their organization; and b) establishing the importance that trust has for business relations such as loaning money, asking for money or setting up a society. Surveys were applied to 3...

En la presente investigación se tuvieron dos objetivos: a) analizar las redes sociales de los productores de hortalizas de la zona media de San Luis Potosí, México, a fin de determinar su organización; y b) establecer la importancia que tiene la confianza para las relaciones de negocios como prestar dinero, pedir dinero o hacer una sociedad. Se enc...

The quality of the process during the elaboration of artisanal dairy products, from the hygiene and compliance with regulations and official standards perspective is a phenomenon that has not been completely studied, except for diverses works analyzing the final quality of cheese or with a limited number of observations. The objective of this trial...

Entrepreneurship, defined as the ability or competence to generate and create new business initiatives has its relevance on the economic and territorial development. Nowadays, state governments seek to support farmers in the development of their entrepreneurship skills based on a network of providers of farming professionals services (PSP). The obj...

Entrepreneurship, defined as the ability or competence to generate and create new business initiatives has its relevance on the economic and territorial development. Nowadays, state governments seek to support farmers in the development of their entrepreneurship skills based on a network of providers of farming professionals services (PSP). The obj...

Resumen Hernández-Ramírez G, et al. 2007. Infectividad, edad y humedad relativa relacionados con la susceptibilidad de ninfas y adultos de Periplaneta americana a Metarhizium anisopliae y Beauveria bassiana (Ascomycota: Hypocreales). Entomotropica 22(1): 27-36. Los hongos entomopatógenos Beauveria bassiana (Balsamo) Vuillemin 1912 (un aislamiento)...

The entomopathogenic fungus Beauveria bassiana (Balsamo) Vuillemin 1912 (1 isolate) and Metarhizium anisopliae (Metschnikoff) Sorokin 1976 (3 isolates) were tested against nymphs and adults of the American cockroach Periplaneta americana under laboratory conditions (T=24±2°C y HR=50±10%). The four conidial suspensions tested against nymphs and adul...