Soxhlet
Mostrando 1-12 de 181 artigos, teses e dissertações.
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1. Nutrient content in ora-pro-nóbis (Pereskia aculeata Mill.): unconventional vegetable of the Brazilian Atlantic Forest
Abstract Ora-pro-nóbis (Pereskia aculeata Mill.) is an unconventional vegetable found in the Brazilian Atlantic Forest and consumed, mainly by the rural population who lives in this biome. The present study investigated the nutritional value and contribution potential this species to the recommendations of daily nutrient intake for adults. Moisture and ash
Food Sci. Technol. Publicado em: 2021-06
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2. Evaluation of Antibacterial Activity, Chromatographic Analysis for Rutin and Quercetin Quantification Using HPLC-UV-Vis from the Hydro-Alcoholic Extract Obtained from Bidens pilosa Linné
Novel and miniaturized technique, a dynamic sonication-assisted solvent extraction before the analysis by high performance liquid chromatography-ultraviolet visible (HPLC-UV-Vis) for isolation, identification and quantification of rutin and quercetin metabolites in alcoholic extracts from Bidens pilosa Linné, was developed. The results showed that the flowe
J. Braz. Chem. Soc.. Publicado em: 2021-03
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3. Lixiviação de fertilizantes de vidros de fosfato com diferentes composições em condições de destilação com Soxhlet
Resumo Fertilizantes de vidro nos sistemas de fosfato foram fundidos a 900-950 °C por 1 h. Foi realizado estudo de lixiviação desses vidros com um período máximo de 300 h, em condição de destilação Soxhlet com água destilada. A perda de massa e as taxas de lixiviação das amostras de fertilizantes de vidro foram calculadas a partir de medições d
Cerâmica. Publicado em: 2020-09
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4. EXTRAÇÃO DO PARACETAMOL E ANÁLISE DA DISPERSÃO DA MASSA DE COMPRIMIDOS: COMPARANDO MEDICAMENTOS GENÉRICO E DE REFERÊNCIA EM LABORATÓRIO DE ENSINO
Medicines are employed in undergraduate courses as motivational strategy. The experiment herein developed compares the extraction of paracetamol from generic and brand name drugs. Tablets were used from two commercial sources purchased from local drugstores. Twenty tablets of each drug type were individually weighed to average weight analysis and mass disper
Quím. Nova. Publicado em: 2020-09
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5. Brazil Nut Oil Extraction Using Subcritical n-Propane: Advantages and Chemical Composition
In order to provide an effective and environmentally correct alternative for oil extraction, subcritical n-propane was used under different temperature and pressure conditions to obtain Brazil nut oil. The composition of the oil was determined and compared to the oils obtained by conventional methods. The result of the extraction yield obtained using subcrit
J. Braz. Chem. Soc.. Publicado em: 2020-03
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6. VALORIZATION OF Solanum viarum DUNAL BY EXTRACTING BIOACTIVE COMPOUNDS FROM ROOTS AND FRUITS USING ULTRASOUND AND SUPERCRITICAL CO2
Abstract Solanum viarum Dunal belongs to the Solanaceae family and it is considered to be a grazing weed toxic to cattle. In this study, ultrasound-assisted extraction (UAE) and supercritical CO2 extraction (SFE-CO2) were applied to evaluate the extraction yield and chemical composition of fruits and roots matrices of Solanum viarum Dunal. A hydroalcoholic s
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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7. Cichorium intybus from India: GC-MS Profiling, Phenolic Content and in vitro Antioxidant Capacity of Sequential Soxhlet Extracted Roasted Roots
Abstract Research on the bio-activities and chemical composition of roasted C. intybus roots from India is very little. In present studies GC-MS analysis of volatile components of roasted C. intybus roots, phenolics and flavonoid content estimation and antioxidant potential of roasted C. intybus roots was carried out. Antioxidant potential was also evaluate
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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8. Characterization of Seed Oils of Pterodon emarginatus Vogel (Sucupira) Obtained by Different Extraction Methods
Abstract The present study aims to evaluate the influence of extraction methods on the quality of bioactive compounds and antioxidant capacity in Pterodon emarginatusVogel (sucupira) oils. The oils were extracted from the sucupira seeds by Soxhlet and by the extraction system of Bligh & Dyer. The oils were analyzed as to fatty acid profile, tocopherols, phyt
Braz. arch. biol. technol.. Publicado em: 24/10/2019
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9. EXTRACTION OF BIOACTIVE COMPOUNDS OF LEAVES OF Duguetia furfuracea (ANNONACEAE) USING GREEN AND ORGANIC SOLVENTS
ABSTRACT Duguetia furfuracea (Annonaceae) is a shrub found in the Brazilian Cerrado that is used in popular medicine as an antirheumatic, for wound healing, treatment of kidney pain and against pediculosis. The aim of this study was to analyze the extraction of leaves of Duguetia furfuracea, using supercritical CO2, ethanol and hexane as solvents. For the su
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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10. Determination of tocopherols and physicochemical properties of faveleira (Cnidoscolus quercifolius) seed oil extracted using different methods
Abstract This study aims to evaluate the physicochemical properties and tocopherol content in faveleira seed oil extracted using three methods (Bligh-Dyer, Soxhlet extractor, and cold-pressing). Each of the methods generated different yield percentages, with cold-pressing producing the least amount of oil. However, the cold-pressing method produced better q
Food Sci. Technol. Publicado em: 11/04/2019
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11. COMPARAÇÃO ENTRE TÉCNICAS DE EXTRAÇÃO DE HIDROCARBONETOS POLICÍCLICOS AROMÁTICOS EM TECIDOS HEPÁTICO E ADIPOSO DE TETRÁPODES MARINHOS E AVALIAÇÃO DA HETEROGENEIDADE DOS TECIDOS
For the evaluation of PAH extraction techniques in adipose and liver tissues of marine tetrapod, samples of some species (Pontoporia blainvillei, Chelonia mydas, Thalassarche melanophris, and Balaenoptera brydei) were spiked with PAH standards and extracted using soxhlet system and microwave oven. The results of both extraction techniques for the two differe
Quím. Nova. Publicado em: 2019-02
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12. Phenolic content and antibacterial activity of extracts of Hamelia patens obtained by different extraction methods
Abstract Hamelia patens, is a plant traditionally used to treat a variety of conditions among the Huastec people of Mexico. The objective of this study is to characterize the phenolic content and critically examine the antimicrobial activity of leaf extracts H. patens, obtained by maceration, Soxhlet and percolation, using ethanol as 70% solvent. Phenolic co
Braz. J. Microbiol.. Publicado em: 2018-09