Senna birostris, es una especie vegetal que crece en Cusco y de la cual se han encontrado investigaciones fitoquímicas y farmacológicas muy limitadas. Algunos estudios previos de otrasespecies relacionadas han confirmado que los extractos de sus hojas tienen actividad antibacteriana. Con el objetivo de determinar sus principales metabolitos secundarios ycuantificar los flavonoides totales presentes en sus hojas, se preparó un extracto hidroalcohólico al 96%. Asimismo, se evaluó su actividad antioxidante a través del ensayo de decoloración de 2,2-difenil-1-picrilhidracilo y su actividad antibacteriana frente a las cepas tipificadas de Escherichia coli, Staphylococcus aureus y Pseudomona aeruginosa. Los resultados permitieronevidenciar que el extracto de Senna birostris presenta abundante cantidad de quinonas, glicósidos fenólicos y flavonoides, estos últimos posibles responsable...

La contaminación por metales pesados es uno de los problemas ambientales más serios. El objetivo de la presente investigación fue, evaluar el proceso de bioadsorción de Pb (II) y Cd (II) usando como biomasa a E. coli aislada de las aguas contaminadas del Río Huatanay de la ciudad del Cusco. Se aislaron 07 cepas de enterobacterias, sólo 06 fueron identificadas usando el sistema microbiológico automatizado MicroScan WalkAway 96 plus, siendo éstas: cepa RHC-01=Acinetobacter iwoffi; cepa RHC-03=Proteus vulgaris; cepa RHC-04=Yersinia pseudotuberculosis; cepa RHC-05=Escherichia coli; cepa RHC-06=Escherichia coli; cepa RHC-07=Escherichia coli. Las 03 cepas de E. coli fueron sometidas a pruebas de resistencia a Pb (II) y Cd (II), siendo las cepas RHC-05 y RHC-06 las más resistentes a ambos metales. Ambas fueron cultivadas en caldo nutritivo, obteniendo 15,6 y 31 mg de biomasa / L, respe...

Las cáscaras de los cítricos presentan una gran cantidad de aceites esenciales con muchas aplicaciones en las industrias farmacéutica, cosmética y alimentaria. En las últimas décadas en nuestro país la industria de cítricos ha alcanzado un gran despegue debido al aumento de la producción interna y el crecimiento de las exportaciones, esto sumado a que a nivel internacional han ido cambiando los hábitos alimentarios de los consumidores quienes buscan alimentos funcionales, por lo que los cítricos han ganado mucha atención. Uno de los cítricos que ha venido destacando en países como India y Nigeria es el Citrus jambhiri, que también se cultiva en nuestro país y presenta en sus cáscaras un aceite esencial muy interesante. El objetivo de la presente investigación fue realizar la extracción del aceite de la cáscara de Citrus jambhiri usando el método de destilación por a...

The objective of this work was to determine the best solvent for the extraction of anthocyaninsfrom the fruits of B. humbertiana and B. boliviana and to evaluate the pH, color, and antioxidant activity of the yogurts to which the lyophilized extract of both species was incorporated. For the extraction solvents allowed for food were used; ethanol and water acidified with citric acid. The 96% ethanolic extracts acidified with citric acid (pH 3.5) and freeze-dried of both berberis species were incorporated into commercial yogurt samples at the concentrations of 80 mg/50 g and 100 mg/50g of yogurt, determining that they maintain acid pH, achieve a coloration very similar to commercial yogurts with an overall color difference (ΔE) of less than 10 and have higher antioxidant activity.

Senna birostris, es una especie vegetal que crece en Cusco y de la cual se han encontrado investigaciones fitoquímicas y farmacológicas muy limitadas. Algunos estudios previos de otrasespecies relacionadas han confirmado que los extractos de sus hojas tienen actividad antibacteriana. Con el objetivo de determinar sus principales metabolitos secundarios ycuantificar los flavonoides totales presentes en sus hojas, se preparó un extracto hidroalcohólico al 96%. Asimismo, se evaluó su actividad antioxidante a través del ensayo de decoloración de 2,2-difenil-1-picrilhidracilo y su actividad antibacteriana frente a las cepas tipificadas de Escherichia coli, Staphylococcus aureus y Pseudomona aeruginosa. Los resultados permitieronevidenciar que el extracto de Senna birostris presenta abundante cantidad de quinonas, glicósidos fenólicos y flavonoides, estos últimos posibles responsable...

Clinopodium brevicalyx grows in the southern high Andean regions of Peru and has wide popular use, however to date there is no research on its activity against Trichophyton rubrum, an anthropophilic dermatophyte fungus with an affinity for human keratin and difficult to treat, causing the most common superficial mycoses such as athlete's foot, ringworm and nail infections. The aim of this research was to determine the activity of the essential oil of Clinopodium brevicalyx against Trichophyton rubrum ATCC 28188. The essential oil was obtained by hydrodistillation, the extraction rate was 1.98 ± 0.02% (w/v), and the physicochemical characteristics were: relative density of 0.93654 g/mL, a refractive index of 1.4625, an optical rotation of 2.14°, and pH of 6.20. The chemical composition of the essential oil was determined using a gas chromatograph coupled to a mass spectrometer, identify...

Clinopodium brevicalyx grows in the southern high Andean regions of Peru and has wide popular use, however to date there is no research on its activity against Trichophyton rubrum, an anthropophilic dermatophyte fungus with an affinity for human keratin and difficult to treat, causing the most common superficial mycoses such as athlete's foot, ringworm and nail infections. The aim of this research was to determine the activity of the essential oil of Clinopodium brevicalyx against Trichophyton rubrum ATCC 28188. The essential oil was obtained by hydrodistillation, the extraction rate was 1.98 ± 0.02% (w/v), and the physicochemical characteristics were: relative density of 0.93654 g/mL, a refractive index of 1.4625, an optical rotation of 2.14°, and pH of 6.20. The chemical composition of the essential oil was determined using a gas chromatograph coupled to a mass spectrometer, identify...

Clinopodium brevicalyx grows in the southern high Andean regions of Peru and has wide popular use, however to date there is no research on its activity against Trichophyton rubrum, an anthropophilic dermatophyte fungus with an affinity for human keratin and difficult to treat, causing the most common superficial mycoses such as athlete's foot, ringworm and nail infections. The aim of this research was to determine the activity of the essential oil of Clinopodium brevicalyx against Trichophyton rubrum ATCC 28188. The essential oil was obtained by hydrodistillation, the extraction rate was 1.98 ± 0.02% (w/v), and the physicochemical characteristics were: relative density of 0.93654 g/mL, a refractive index of 1.4625, an optical rotation of 2.14°, and pH of 6.20. The chemical composition of the essential oil was determined using a gas chromatograph coupled to a mass spectrometer, identify...

Clinopodium brevicalyx grows in the southern high Andean regions of Peru and has wide popular use, however to date there is no research on its activity against Trichophyton rubrum, an anthropophilic dermatophyte fungus with an affinity for human keratin and difficult to treat, causing the most common superficial mycoses such as athlete's foot, ringworm and nail infections. The aim of this research was to determine the activity of the essential oil of Clinopodium brevicalyx against Trichophyton rubrum ATCC 28188. The essential oil was obtained by hydrodistillation, the extraction rate was 1.98 ± 0.02% (w/v), and the physicochemical characteristics were: relative density of 0.93654 g/mL, a refractive index of 1.4625, an optical rotation of 2.14°, and pH of 6.20. The chemical composition of the essential oil was determined using a gas chromatograph coupled to a mass spectrometer, identify...

The increasing consumer demand for more nutritious foods, naturally sourced ingredients, and cleaner labels is pushing the food and cosmetic industries to transition from the use of artificial colorants towards naturally sourced alternatives. In this context, the industry is continuously searching for sources of more stable colorants, with special interest in plant sources. The vibrant biodiversity found in Peru represents an exciting economic opportunity. In this review, we highlight select Peruvian crops with excellent potential for use as colorant sources for industrial applications, with some sources being extensively studied and others receiving attention in more recent years. Purple corn, a crop native to the Andes region, is a rich source of pigments with great stability and a long history of use in different applications around the world. Colored-fleshed potatoes, underutilized A...