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1
artículo
Publicado 2015
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The research involved two stages: In the first one, screening methodology was performed toevaluate the effect of the most significant factors: temperature, time and ratio raw material:solvent (MP: S) on the extraction of fructooligosaccharides (FOS) and reducing sugars (AR)from yacon flour. A factorial arrangement 2K were used; the levels for the factors were: time5-40 minutes; ratio MP: S 1:10-1:70 g / ml; temperature 30-90 ° C; responses variables wereextraction yield of FOS and AR. The results indicated that only the factor ratio MP: S hadsignificant effect on the extraction of FOS and AR (p-value <0.05). In the next stage, manylevels of ratio MP: S (1:10 to 1: 100 g / ml) were evaluated holding for time 5 minutes andtemperature at 30°C. Maximum extraction and greatest recovery of the extract was obtainedwith ratio MP:S 1:30. Finally, two kinetic models were used to describe the ...
2
artículo
Publicado 2010
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In this paper we have studied the effect of the moisture from the eucalyptus leaf and the time of extraction on the yield of essential oil and the production cost. We took into account parameters such as steam temperature, pressure extraction, porous bed, steam flow and temperature of condensation. A Central Composite Rotational Design was used to evaluate optimum extraction areas and the cost that would follow, searching always to increase yields and reduce costs. According to this design, the extraction with the lowest production costs (0.57 Nuevos Soles by mL of essential oil) is reached when the leaves have moisture between 25 and 30% and are extracted with times between 98 and 126 min.
3
artículo
Publicado 2010
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In this paper we have studied the effect of the moisture from the eucalyptus leaf and the time of extraction on the yield of essential oil and the production cost. We took into account parameters such as steam temperature, pressure extraction, porous bed, steam flow and temperature of condensation. A Central Composite Rotational Design was used to evaluate optimum extraction areas and the cost that would follow, searching always to increase yields and reduce costs. According to this design, the extraction with the lowest production costs (0.57 Nuevos Soles by mL of essential oil) is reached when the leaves have moisture between 25 and 30% and are extracted with times between 98 and 126 min.
4
artículo
Publicado 2022
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The Soxhlet method in extracting plasticizers from PVC compounds presents various areas for improvement, such as the amount of solvent used, the time required in the process, and its costs. This study proposes replacing the Soxhlet method with the ultrasound-assisted method to reduce the time, costs, and amount of solvent used in plasticizer extraction. It also proposes using solvent recovered from previous extractions to reduce costs further. The study involved experimentation with three different grades of PVC compounds (medical, cable, and profile) to compare the recovery of plasticizers by the Soxhlet and the ultrasound-assisted methods. The plasticizers obtained were analyzed using gas chromatography, gas chromatography coupled with mass spectroscopy, and Fourier-transform infrared spectroscopy to evaluate the results of each extraction method as compared to reference co...
5
artículo
Publicado 2022
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The Soxhlet method in extracting plasticizers from PVC compounds presents various areas for improvement, such as the amount of solvent used, the time required in the process, and its costs. This study proposes replacing the Soxhlet method with the ultrasound-assisted method to reduce the time, costs, and amount of solvent used in plasticizer extraction. It also proposes using solvent recovered from previous extractions to reduce costs further. The study involved experimentation with three different grades of PVC compounds (medical, cable, and profile) to compare the recovery of plasticizers by the Soxhlet and the ultrasound-assisted methods. The plasticizers obtained were analyzed using gas chromatography, gas chromatography coupled with mass spectroscopy, and Fourier-transform infrared spectroscopy to evaluate the results of each extraction method as compared to reference co...
6
artículo
Publicado 2025
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This study analyzes the potential of 12 seeds from the Peruvian region as by-products of fruit processing, presenting them as a sustainable alternative for waste reduction and the valorization of bioactive compounds. It highlights their chemical composition and the role they can play in recovering bioactive compounds with antioxidant, antimicrobial, and functional properties. The study explores the possibility of utilizing fruit by-products in various industrial sectors, such as food, pharmaceutical, and nutraceutical industries, thereby contributing to the circular economy and a more sustainable management of natural resources. The review emphasizes the importance of addressing challenges such as the presence of antinutrients and contaminants, as well as evaluating processing methods that can reduce these compounds, highlighting the need to ensure their safety for consumption and their ...
7
objeto de conferencia
Publicado 2013
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Presentación que se llevó a cabo durante el V Congreso Internacional de Computación y Telecomunicaciones COMTEL 2013 del 22 al 25 de octubre de 2013 en Lima, Perú. COMTEL, es un certamen organizado por la Facultad de Ingeniería de Sistemas, Cómputo y Telecomunicaciones de la Universidad Inca Garcilaso de la Vega, que congrega a profesionales, investigadores y estudiantes de diversos países con el fin de difundir e intercambiar conocimientos, mostrar experiencias académicas-científicas y soluciones para empresas en las áreas de Computación, Telecomunicaciones y disciplinas afines.
8
artículo
Publicado 2025
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Since 2015, the demand and price of lithium have increased considerably due to its central role in battery production. Latin America has around 60% of the world's lithium reserves. The deposits are mainly located in the Puna region shared by Chile, Bolivia, Peru and Argentina. The possibility of extracting lithium from salt flats is promoted by governments and companies as an undeniable opportunity. At the same time, lithium mining is presented as a key to solving the climate crisis, given the need to reduce greenhouse gases and favor the energy transition. In contrast, lithium extraction is considered by local communities as pernicious because the extraction involves the loss of large volumes of water, since lithium is dissolved in the salt flats and a large amount of fresh water is used during the process and because of the chemical contamination it generates. This paper will address t...
9
tesis de grado
Publicado 2018
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Universidad Nacional Agraria La Molina. Facultad de Ciencias. Departamento Académico de Biología
10
Publicado 2020
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El objetivo de este trabajo de investigación es dar a conocer que en diversos diagnósticos estatales y trabajos de investigación, como el de Zúñiga (2007), se ha llegado a considerar a la vicuña como uno de los recursos de mayor potencial para las comunidades alto andinas de nuestro país, por lo cual constituye una rescatable motivación para efectuar estudios de diverso nivel al respecto. El objetivo principal que tuvimos al desarrollar este trabajo fue el de presentar, de modo integral y sistemático, los aspectos esenciales acerca de las técnicas de extracción del vellón de la vicuña, en el marco general y que se ha venido desarrollando dicho proceso, es decir, en los marcos históricos, sociales, culturales y tecnológicos correspondientes. Los métodos de estudios más relevantes que se han utilizado son el analítico y el descriptivo. En cuanto al método analítico, ha ...
11
tesis de grado
Publicado 1995
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This research seeks to generate a new alternative to obtain oil, restoring and valuing oil native plants that occur in our raw material used for the research work, I collect Shanao district, province of Lamas for the extraction of oil hydraulic pressing method is used. The extraction process was agreed following cleaning flow and selection preparation, husking, grinding, drying and pressing the found optimum parameters, for the best performance of extraction are: fine grinding with particle size of 2.19 mm, humedád 6% and 60° c/1 drying time. Raw material, determined biometric measurements and the proximal chemical analysis, found that Sacha inchic almond contains 51% oil and 27% being one of the fundamentals of this oil, its high unsaturated, features since it contains 52% of linolenic acid, which makes it...
12
tesis de grado
Publicado 2025
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El presente estudio tiene como objetivo estudiar la prefactibilidad para instalar una planta de extracción de aceite de Moringa Oleífera con rentabilidad, Piura-2023 , con una metodología de enfoque cualitativa de tipo aplicada, cuyos resultados obtuvieron como localización la zona Chapaira con el factor de ponderación principal, la disponibilidad de materia prima, también los costos e ingresos necesarios para la instalación de una planta de procesamiento de aceite de Moringa Oleífera en la Provincia de Piura fue S/ 1,320,638.40 y S/ 1,512,000.00 respectivamente, considerando un precio por cada 100 ml de S/ 45 soles. Teniendo los indicadores económicos financieros que hacen viables el proyecto son B/C= 1.14, PRI= 5 meses, ROI= 18.8%, VAN= S/666,571.52 soles, TIR= 202%; mientras que el VANEF = S/ 534,617.12 y un TIR= 633%, considerando una tasa de descuento de 20%, concluyendo qu...
13
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
14
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
15
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
16
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
17
tesis de grado
Publicado 2025
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La presente investigación tiene como objetivo diseñar una máquina de extracción de humos para mejorar la calidad del aire durante un proceso de soldadura. El sistema propuesto tiene una capacidad de 3 HP y un caudal operativo de 0,63 m³/s. La hipótesis plantea que dicho diseño contribuirá significativamente a reducir la contaminación ambiental en la zona de trabajo y en el entorno general. Se utilizó un enfoque cuantitativo con simulaciones de dinámica de fluidos computacional (CFD) para modelar las condiciones operativas. La metodología incluyó la evaluación de componentes esenciales como la campana de extracción, brazo articulado, colector y ventilador, optimizando su geometría, versatilidad y eficiencia energética. Los resultados evidenciaron que el diseño propuesto reduce la concentración de contaminantes en la zona de respiración del soldador de 24,9 mg/m³ a 0,7...
18
artículo
Publicado 2012
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This paper presents an investigation of the extraction of essential oils by steam distillation. The process is analyzed and a model is developed for the extraction of essential oil of eucalyptus in pilot scale with a steam flow of 5.73 g / min. According to the model Dunckhorst-Houghton, which considers the effect of axial dispersion, and the use of optimization procedures to establish the model parameters, excellent agreement was obtained between the amount of oil extracted theoretical and experimental.
19
artículo
The need to develop and know methods for metallurgical treatment to process gold-bearing refractory minerals or hard to treat be- cause of carbon contents, tellurium, antimony, arsenic, carbonates and gold in solution solid sulfides, forces us to study the different methods of specific oxidation that should be applied in each mineral before to leach ore to reach high recoveries into precious metals Through Gravimetrically followed by cyanidation is obtained 94.74% of gold extract in the studied mineral.
20
artículo
This work was developed in order to implement the PINCH technology integration batch process for carminic acid. The method used consisted of the application of the concepts of bottle necks total process (OPB) together with part-time models (TAM) and time fractionated! (TSM). The drying operation is identified as the rate limiting step of the process identifying it as an OPB plant capacity. The extraction yield was 95% w / p carminic acid with an energy savings of approximately 60% of the conventional requirement.
