El presente trabajo de investigación tuvo como objetivo general la nuevas tecnologías para la identificación, caracterización, selección y mejora genética de las especies del genero Origanum L. mediante la recolección de 50 cultivares de orégano de los distritos de Carumas, Cuchumbaya, Puquina, San Cristóbal y Torata pertenecientes a la Región Moquegua. Posterior a ello se procedió con la caracterización taxonómica, según la metodología propuesta por Fátima (2009); dicha caracterización Taxonómica demostró que las muestras de orégano recolectadas en los distritos de Carumas, Cuchumbaya, San Cristobal, Puquina y Torata, presentan 4 especies las cuales son las especies de: Origanum x majoricum, Origanum x majoricum forma compacta y Origanum x majoricum forma laxa y O. plegatifolium. Las muestras caracterizadas taxonómicamente fueron evaluadas mediante el análisis de i...

Olive leaves are residues from pruning and harvesting and are considered an environmental management problems. Interestingly, these residues contain high polyphenol concentrations, which can be used to treat chronic diseases. However, these compounds are a technological challenge due to their thermolability and reactivity during extraction. Thus, this study assessed the use of pressurized liquid extraction (PLE) with green solvents like water-ethanol and water-glycerol mixtures (0–15%) at 50 °C and 70 °C to yield polyphenol-rich antioxidant extracts with reduced glucose and fructose content. The use of 30% ethanol at 70°C presented the highest polyphenol content (15.29 mg gallic acid equivalent/g dry weight) and antioxidant capacity, which was expressed as IC50 (half maximal inhibitory concentration): 5.49 mg/mL and oxygen radical absorbance capacity (ORAC): 1259 μmol Trolox equiva...

Olive leaves are residues from pruning and harvesting and are considered an environmental management problems. Interestingly, these residues contain high polyphenol concentrations, which can be used to treat chronic diseases. However, these compounds are a technological challenge due to their thermolability and reactivity during extraction. Thus, this study assessed the use of pressurized liquid extraction (PLE) with green solvents like water-ethanol and water-glycerol mixtures (0–15%) at 50 °C and 70 °C to yield polyphenol-rich antioxidant extracts with reduced glucose and fructose content. The use of 30% ethanol at 70°C presented the highest polyphenol content (15.29 mg gallic acid equivalent/g dry weight) and antioxidant capacity, which was expressed as IC50 (half maximal inhibitory concentration): 5.49 mg/mL and oxygen radical absorbance capacity (ORAC): 1259 μmol Trolox equiva...

El presente trabajo de investigación tuvo como objetivo general la nuevas tecnologías para la identificación, caracterización, selección y mejora genética de las especies del genero Origanum L. mediante la recolección de 50 cultivares de orégano de los distritos de Carumas, Cuchumbaya, Puquina, San Cristóbal y Torata pertenecientes a la Región Moquegua. Posterior a ello se procedió con la caracterización taxonómica, según la metodología propuesta por Fátima (2009); dicha caracterización Taxonómica demostró que las muestras de orégano recolectadas en los distritos de Carumas, Cuchumbaya, San Cristobal, Puquina y Torata, presentan 4 especies las cuales son las especies de: Origanum x majoricum, Origanum x majoricum forma compacta y Origanum x majoricum forma laxa y O. plegatifolium. Las muestras caracterizadas taxonómicamente fueron evaluadas mediante el análisis de i...

Azotobacter is a type of bacterium nonpathogenic, Gram-negative with ability to synthesize simultaneously under aerobic conditions two biodegradable polymers extra and intracellular such as alginate and polyhydroxyalkanoates, respectively, whose physical, mechanical, and biodegradable properties have awoken the interest in the industry. Thus, this review compiles information on synthesis chemistry of these polymers and the genetic modification of this bacterium in order to produce a particular polymer and improve its yields. Additionally, we show that alginates obtained present a higher molecular weight, degree of acetylation and M/G ratio compared with other organic sources like seaweed; while polyhydroxyalkanoate polymers have better physical and mechanical characteristics (melting temperature, Young's modulus, elongation and glass transition temperature) compared with other synthetic ...

Prickly pear (Opuntia ficus-indica L. Miller) is a natural source of antioxidant compounds that have gained significant attention due to their potential health benefits. This study aims to investigate the effectiveness of pressurized liquid extraction (PLE) and Ultrasound-Assisted Extraction (UAE), combined with water–ethanol mixtures from 0 to 60%, at moderate temperatures between 50 °C to 70 °C to improve the recovery of antioxidant compounds from red peel prickly pear. The recovery of these compounds was affected by solvent composition and temperature for both extraction techniques. Interestingly, the use of pure water at 70 °C during the PLE process allowed the recovery of high concentrations of antioxidant compounds (12.96 mg GAE/g dw, IC5O: 2.03 mg/mL, ORAC: 625 µmol TE/g dw). On the contrary, when the UAE process was combined with 30% ethanol at 50 °C, the extractability of...

Prickly pear (Opuntia ficus-indica L. Miller) is a natural source of antioxidant compounds that have gained significant attention due to their potential health benefits. This study aims to investigate the effectiveness of pressurized liquid extraction (PLE) and Ultrasound-Assisted Extraction (UAE), combined with water–ethanol mixtures from 0 to 60%, at moderate temperatures between 50 °C to 70 °C to improve the recovery of antioxidant compounds from red peel prickly pear. The recovery of these compounds was affected by solvent composition and temperature for both extraction techniques. Interestingly, the use of pure water at 70 °C during the PLE process allowed the recovery of high concentrations of antioxidant compounds (12.96 mg GAE/g dw, IC5O: 2.03 mg/mL, ORAC: 625 µmol TE/g dw). On the contrary, when the UAE process was combined with 30% ethanol at 50 °C, the extractability of...