Wet rot affects organic banana crops in the northern tropical region of Peru. Several bacteria have been reported to cause wet rot on different crops, leading to severe problems, particularly in humid climates. Bacteria infect the banana pseudostem through wounds caused during plant pruning and insect bites. Knowledge about bacteria identification that causes wet rot may provide a valuable tool for controlling this issue. The present study explored the primary bacterial component of banana pseudostem wet rot samples at three localities in the Sullana province of Piura, using 16S rRNA gene sequencing. A total of one hundred and thirty-six sequence data were obtained from the three Sullana localities: forty sequences of bacterial isolates from the Querecotillo locality sample, forty-eight from Mambre, and Salitral each. The genus Klebsiella of the Enterobacteriaceae family was identified a...

La pudrición blanda a nivel mundial, es una de enfermedad que afecta a cultivos de importancia agrícola económica como lo son cultivos de banano orgánico que se cultivan en la región norte tropical del Perú en el distrito de Querecotillo provincia de Sullana, departamento de Piura. Diversos estudios relacionan a especies bacterianas del género Pectobacterium y Dickeya (anteriormente Erwinia). Sin embargo, en los últimos años también se ha reportado la presencia de bacterias del género Klebsiella en muestras de pudrición blanda en banano. Con la finalidad de evidenciar que población bacteriana se encuentra presente en muestras de pudrición blanda en banano orgánico de Querecotillo, empleamos un análisis de similitud del gen 16S ARN (fragmento de 1492 nucleótidos) de 37 secuencias obtenidas de los aislados bacterianos de la muestra de pudrición blanda. Nuestros resultados...

Due to the antioxidant potential of the fruits of the "mito" (Vasconcellea candicans, (A. Gray) A. DC 1864) and the possibility of being used as a natural additive in the food industry, we aim to evaluate the concentration of polyphenols, the antioxidant capacity and the mean inhibitory concentration (IC50) of the pulp of this fruit in two stages of maturity and in two extracts, aqueous and ethanolic at 70% (ethanol 70: water 30). We determined the concentration of total polyphenols, the antioxidant capacity as % of free radical capture and the inhibition coefficient (IC50). Our results indicate that the aqueous extract of the pulp of the fruits of immature myth has the highest concentration of total polyphenols, while the antioxidant capacity was higher in ethanolic extracts, these being higher than those found in papaya. The IC50 was higher in the mature ethanolic extract of mito vs. p...

The alpha amylases are the enzymes most studied and important in biotechnology and industry; because they have completely replaced the starch’s chemical hydrolysis. These enzymes are essential in the food production, medicines and detergents in order to optimize processes and conserve the environment. The α-amylase can be isolated from different organisms such as plants, animals, fungi and bacteria, now a large number of bacterial α-amylases especially from genus Bacillus are commercially available and they are the most used in industry. However, the production of these do not meet industry requirements in the world, because the demand for this enzyme has increased in the last two years and the use of bacterial α-amilase has caused allergies affecting the 15% of the global population. In this study, as a source of α-amylase used the seeds from Chenopodium quinoa (quinoa). Var. whit...

Objetivos: Describir las características clínicas, micológicas e histopatológicas de una serie de pacientes con micosis ganglionar y determinar si las afecciones ganglionares por hongos o micosis ganglionares pueden imitar otras patologías ganglionares infecciosas y no infecciosas. Material y Métodos: Se evaluaron 154 pacientes atendidos en el Departamento de enfermedades infecciosas y transmisibles del Hospital Nacional Cayetano Heredia de Lima entre enero del 2003 y enero del 2004. Estos pacientes participaron en un estudio de validación de una prueba diagnóstica para tuberculosis ganglionar pero tuvieron un diagnóstico definido de micosis ganglionar. Resultados: De 154  pacientes con linfadenopatía evaluados durante el tiempo de estudio, 7 tuvieron micosis ganglionar, dos de ellos eran pacientes inmunocompetentes y los cinco restantes inmunosuprimidos, uno por linfoma...