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| Registros recuperados: 52 | |
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| Sun,Xinyi; Hao,Long; Ma,Hua; Li,Tong; Zheng,Lan; Ma,Zhao; Zhai,Guoyin; Wang,Liqin; Gao,Shanglong; Liu,Xiaonan; Jia,Mengshi; Jia,Le. |
| The extraction parameters for Pleurotus eryngii SI-02 exopolysaccharide (EPS) produced during submerged culture were optimized using response surface methodology (RSM). The optimum conditions for EPS extraction were predicted to be, precipitation time 20.24 h, ethanol concentration 89.62% and pH 8.17, and EPS production was estimated at 7.27 g/L. The actual yield of EPS under these conditions was 7.21 g/L. The in vitro antioxidant results of the EPS showed that the inhibition effects of EPS at a dosage of 400 mg/L on hydroxyl, superoxide anion and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals were 59.63 ± 3.72%, 38.69 ± 2.59%, and 66.36 ± 4.42%, respectively, which were 12.74 ± 1.03%, 8.01 ± 0.56%, and 12.19 ± 1.05% higher than that of butylated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pleurotus eryngii SI-02; Exopolysaccharide; Extraction; Antioxidant activity; In vitro. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400009 |
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| Fertonani,Heloísa Cristina Ramos; Scabio,Ardalla; Carneiro,Eliana Beleski Borba; Schemim,Maria Helene Canteri; Nogueira,Alessandro; Wosiacki,Gilvan. |
| In Brazil, one of the top apple producing countries in the world, apple processing is an increasing activity, with pomace as the main by-product. To extract pectin from pomace, factors affecting process and product should be studied for optimization. A model to produce LMP directly from dried apple pomace was established observing the effects of HNO3 concentration and the time of reaction at 97ºC, analyzed from a statistical and practical point of view. The model for gravimetric yield (R² =0.9834) predicts the highest value of 20.07 g/100 g (126 mM; 14.07 min) of a pectin with a degree of esterification of 48.49%. The model for degree of esterification of extracted pectin (R²= 0.9797) predicts the lowest value of 43.73% (200 mM; 10.07 min) with a yield of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apple; Pectin; Extraction; LMP; Nitric acid. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100023 |
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| Xavier,Marcelo Fonseca; Lopes,Toni Jefferson; Quadri,Mara Gabriela Novy; Quadri,Marintho Bastos. |
| The aim of this work was to extract anthocyanins from the red cabbage. Batch studies under several extraction conditions indicated that acetic acid in aqueous solution (10% V/V) was the best solvent, used in the proportion of 0.25 g of red cabbage mL-1. At this condition, column assays were carried out to evaluate the influence of the ionic force, pH, solvent flow rate, recirculated volume of red cabbage juice and the mass of red cabbage. Results showed that the pH, recirculation and mass of red cabbage had statistically significant effects, where the optimum operation conditions found for the process were pH 2.3, recirculation volume of the solvent 0.83 L and mass of red cabbage 50 g. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthocyanins; Extraction; Red cabbage; Experimental design; Optimization. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100018 |
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| Gil Cortiella,Mariona; Peña-Neira,Álvaro. |
| Obtaining polysaccharides from grape cell walls is an interesting topic for the wine industry given its implications with regards to wine treatments and potential sensory attributes. In the present work, several conditions (i.e., a chelating agent, pH, titratable acidity, extraction time, number of successive extractions, solid to liquid ratio and alcoholic fermentation) were tested to assess their effects on the yield of soluble polysaccharides obtained from grape skins. Among the four tested solvents (i.e., water, tartaric acid, ammonium oxalate, and ethylenediaminetetraacetic acid), aqueous ammonium oxalate was the most effective for polysaccharide extraction but also produced the highest amount of protein impurities. Increasing the number of successive... |
| Tipo: Journal article |
Palavras-chave: Carménère; Extraction; Grape skin polysaccharides; Pectin; Polysaccharides; Wine. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100009 |
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| Maurel, Laurence; Bocande, Stephane; Duval, Magali; Gauthier, Emilie; Huguet, Antoine. |
| Ces fiches ont été rédigées pour accompagner la mise en service de l'outil "BD Récif" et constitue la notice d'utilisation simplifiée. BD Récif est une application destinée à faciliter la bancarisation des données relatives aux écosystèmes récifaux (suivis des aires marines protégées, suivis de la Directive Cadre sur l'eau, programmes de recherche, …). Cet outil a été financé par l'Etat / DEAL Réunion (inscrit dans le TIT Resobs de l'IFRECOR), le MNHN et IFREMER. Il a été mis en production en 2016 et livré avec des données historiques qui ont fait l'objet pour partie de reprises depuis l'outil CoReMo. Cet outil s'appuie sur le Système d'Information Quadrige² (constituant le système central, car désigné par le Ministère en charge de l'Environnement comme... |
| Tipo: Text |
Palavras-chave: BD Récif; Données; Métadonnées; Résultats; Saisie; Extraction; Administration; Base de données; Benthos de substrats durs; Récifs coralliens. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00386/49776/50321.pdf |
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| BAKO, TANKO; ENYI, OBETTA SAMUEL; IMOLEMHE, UMOGBAI VICTOR. |
| A theory using mechanical expression was proposed from the physics of oil expression in a screw press to characterize a mathematical model. The general oil expression equation was solved for three machine parameters (choke clearances, screw shaft clearances and screw shaft speeds) which simulate the machine parameters effects in the overall screw expeller process. The mathematical model was validated by the experimental data obtained from pressing fish oil with a screw press, using regression analysis. The experimental oil extraction data was fitted to the model and the quality of fit evaluated. A good fit was indicated by correlation coefficient of 0.9983, coefficient of determination of 0.9967, absolute average percentage deviation of 4.8 %, coefficient... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mathematical; Model; Extraction; Parameters. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5521 |
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| Mosbah, Amor; Delavenne, Emilie; Souissi, Yasmine; Mahjoubi, Mouna; Jehan, Philippe; Le Yondre, Nicolas; Cherif, Ameur; Bondon, Arnaud; Mounier, Jerome; Baudy-floc'H, Michele; Le Blay, Gwenaelle. |
| Lactobacillus harbinensis K.V9.3.1Np was described as endowed with high antifungal activity. Most of the studies associated this activity to the produced organic acids, i.e., lactic acid, acetic acid, and hexanoic acid. The aim of this study was to purify and identify, other not yet described, antifungal molecules produced by L. harbinensis K.V9.3.1 Np when used in yogurt fermentation. Active compounds were extracted through several extraction processes using organic solvents and protein precipitation. The fractions of interest were purified using flash chromatography and preparative HPLC for specific characterization. The bioactive compounds identification was performed using Nuclear Magnetic Resonance and Mass Spectrometry. Activity tests against... |
| Tipo: Text |
Palavras-chave: Spermine; Polylactates; Lactobacillus; Extraction; Purification; Ms; Nmr. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00616/72773/72221.pdf |
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| Aquino,Rosiane Filomena Batista Almeida; Assunção,Natália Silva; Aquino,Leonardo Angelo; Aquino,Priscila Maria de; Oliveira,Guilherme Anthony de; Carvalho,André Mundstock Xavier de. |
| Farmers must carefully choose the cultivar to be grown for a successful carrot crop. The yield potential of the cultivar may influence nutrient demand and should be known to plan for fertilization application. The aim of this study was to evaluate the cultivar effect on carrot yield and on the nutrient content and quantities allocated to leaves and roots. Three experiments were set up in two crop seasons in Rio Paranaíba, MG, Brazil. In the first season, typical summer, 10 summer cultivars were sown. In the second season, summer-winter (transition), two experiments were set up, one with summer cultivars and the other with winter cultivars. The treatments consisted of the carrot cultivars distributed in randomized blocks with four replications. Fresh and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota L.; Nutritional balance; Extraction; Nutrient export. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200541 |
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| Ortega, A.; Borges, P.; Roncal, E.; Rogert, E.; Pino, J. A.. |
| Las mejores condiciones de extracción por percolación fueron empleando un tamaño de partícula promedio de 1,7 mm y una velocidad de extracción de 102 mL/h. El rendimiento del mejor extracto fue 79,2 % presentando 3,1 % de sólidos totales y una calificación del sabor a café de 5,1 que corresponde a una intensidad moderada. La variable acidez está determinada por la velocidad de extracción y en menor medida el tamaño de partícula; a medida que ambos factores disminuyen, la acidez se incrementa. En el contenido de sólidos totales se aprecia que al disminuir el tamaño de partícula, fue mayor el contenido de sólidos y el sabor a café está determinado fundamentalmente por el tamaño de partícula. A medida que este factor disminuyó, aumentó la intensidad del sabor... |
| Tipo: Journal Contribution |
Palavras-chave: Food processing; Size; Coffee pulp; Flavour; Extraction. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5016 |
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| Registros recuperados: 52 | |
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