Encapsulation of L-Ascorbic Acid Within the Natural Biopolymer-Galactomannan-Using the Spray-Drying Method: Preparation, Characterization, and Evaluation of Antioxidant Activity
“…The encapsulation efficiency (EE) was found to be 96.34 ± 1.6%, indicating that the xyloglucan and the conditions used in SD process did not cause significant damage to the active compound. The EE value found here is similar to the other polysaccharides used for the encapsulation of ascorbic acid, such as galactomannan that varied from 95.40 to 97.92% in different environmental conditions [20] and arabic gum that presented 100.80% [9].…”
Section: Encapsulation Efficiency Of Ascorbic Acidsupporting
confidence: 77%
“…Briefly, a volume of 10 mL of 0.05% (w/v) microparticle solution in 1% (w/v) oxalic acid was added in Erlenmeyer flask containing 50 mL of 1% (w/v) oxalic acid and titrated with 0.2% (w/v) DCIP solution until persistent pink color for 15 s. The amount of ascorbic acid was calculated according to the following equation [19]: AA (%) = (V x F)/A x100, where V = Volume spent in the titration; F = volume of DCIP in mL spent on standardization; A = mass (g) of the sample used in the titration. The encapsulation efficiency (EE) was calculated according to the equation [20]: EE(%) = (QD/QA) x 100, where QD is the total amount of ascorbic acid determined in the system and QA the amount of ascorbic acid added to the system. The encapsulation experiments were carried out in quintuplicate and for each one of the five samples, ascorbic acid was determined in triplicate.…”
Section: Encapsulation Efficiency Of L-ascorbic Acidmentioning
confidence: 99%
“…The evaluation of the stability of the XAA microparticles, was carried out at time intervals of 0, 7, 15, 30 and 60 days, through ascorbic acid analysis mentioned in the section 2.7, taking the result of the total ascorbic acid at time 0 as the value of 100%. It was also measured the antioxidant activity using the 2.2diphenyl-1-picrylhydrazyl (DPPH) radical method [20], in which the methanolic solution of the XAA sample, with the concentration of 10 mg mL −1 , was initially subjected to ultrasonic bath (UNIQUE-Ultrasonic Cleaner) for solubilization and release of AA from the nucleus. From this solution different concentrations (from 0.1 to 7.5 mg mL −1 ) were obtained with dilution with methanol.…”
Section: Evaluation Of Stability Of Xaa Microparticlesmentioning
This study evaluated the l-ascorbic acid (AA) encapsulation in microparticles of xyloglucan (XAA) extracted from Hymenaea courbaril seeds by spray drying (SD) and its application in tilapia fish burgers. The encapsulation efficiency was 96.34±1.6% and the retention of the antioxidant activity was of 89.48±0.88% after 60days at 25°C. SEM images showed microspheres with diameters ranging from 4.4 to 34.0μm. FTIR spectrum confirmed the presence of AA in xyloglucan microparticles, which was corroborated by DSC and TGA. The release of ascorbic acid was found to be pH-dependent. The application of XAA in tilapia fish burger did not change the pH after heating and the ascorbic acid retention was greater compared to its free form. The results indicate that xyloglucan can be used to encapsulate AA by SD and suggest that XAA was able to reduce undesirable organoleptic changes in fish burgers.
“…The encapsulation efficiency (EE) was found to be 96.34 ± 1.6%, indicating that the xyloglucan and the conditions used in SD process did not cause significant damage to the active compound. The EE value found here is similar to the other polysaccharides used for the encapsulation of ascorbic acid, such as galactomannan that varied from 95.40 to 97.92% in different environmental conditions [20] and arabic gum that presented 100.80% [9].…”
Section: Encapsulation Efficiency Of Ascorbic Acidsupporting
confidence: 77%
“…Briefly, a volume of 10 mL of 0.05% (w/v) microparticle solution in 1% (w/v) oxalic acid was added in Erlenmeyer flask containing 50 mL of 1% (w/v) oxalic acid and titrated with 0.2% (w/v) DCIP solution until persistent pink color for 15 s. The amount of ascorbic acid was calculated according to the following equation [19]: AA (%) = (V x F)/A x100, where V = Volume spent in the titration; F = volume of DCIP in mL spent on standardization; A = mass (g) of the sample used in the titration. The encapsulation efficiency (EE) was calculated according to the equation [20]: EE(%) = (QD/QA) x 100, where QD is the total amount of ascorbic acid determined in the system and QA the amount of ascorbic acid added to the system. The encapsulation experiments were carried out in quintuplicate and for each one of the five samples, ascorbic acid was determined in triplicate.…”
Section: Encapsulation Efficiency Of L-ascorbic Acidmentioning
confidence: 99%
“…The evaluation of the stability of the XAA microparticles, was carried out at time intervals of 0, 7, 15, 30 and 60 days, through ascorbic acid analysis mentioned in the section 2.7, taking the result of the total ascorbic acid at time 0 as the value of 100%. It was also measured the antioxidant activity using the 2.2diphenyl-1-picrylhydrazyl (DPPH) radical method [20], in which the methanolic solution of the XAA sample, with the concentration of 10 mg mL −1 , was initially subjected to ultrasonic bath (UNIQUE-Ultrasonic Cleaner) for solubilization and release of AA from the nucleus. From this solution different concentrations (from 0.1 to 7.5 mg mL −1 ) were obtained with dilution with methanol.…”
Section: Evaluation Of Stability Of Xaa Microparticlesmentioning
This study evaluated the l-ascorbic acid (AA) encapsulation in microparticles of xyloglucan (XAA) extracted from Hymenaea courbaril seeds by spray drying (SD) and its application in tilapia fish burgers. The encapsulation efficiency was 96.34±1.6% and the retention of the antioxidant activity was of 89.48±0.88% after 60days at 25°C. SEM images showed microspheres with diameters ranging from 4.4 to 34.0μm. FTIR spectrum confirmed the presence of AA in xyloglucan microparticles, which was corroborated by DSC and TGA. The release of ascorbic acid was found to be pH-dependent. The application of XAA in tilapia fish burger did not change the pH after heating and the ascorbic acid retention was greater compared to its free form. The results indicate that xyloglucan can be used to encapsulate AA by SD and suggest that XAA was able to reduce undesirable organoleptic changes in fish burgers.
“…No estudo de propriedades físico-químicas da goma carboximetilada do Flamboyant apresentado por Pacheco-aguirre et al ( 2010), e no estudo de encapsulação do ácido L-ascórbico no biopolímero natural galactomanana apresentado por Souza et al (2015), são identificados os grupos funcionais presentes no material biossorvente. De acordo com eles, o espectro na região do infravermelho da semente de Flamboyant apresenta um grande número de bandas, correspondentes a um polissacarídeo pertencente ao grupo das galactomananas, o qual possui como cadeia principal β-D-manopiranose bem como cadeias laterais de α-D-galactopiranose.…”
Section: Bioadsorçãounclassified
“…De acordo com eles, o espectro na região do infravermelho da semente de Flamboyant apresenta um grande número de bandas, correspondentes a um polissacarídeo pertencente ao grupo das galactomananas, o qual possui como cadeia principal β-D-manopiranose bem como cadeias laterais de α-D-galactopiranose. Utilizando o método de identificação de difração de raios X, apresentado por Souza et al (2015), identifica-se um pico alto próximo a 2θ pouco definido, indicando que a semente de Flamboyant não possui uma organização em sua estrutura.…”
A contaminação da água por metais pesados é um dos grandes problemas sociais da atualidade, uma vez que, esses metais causam inúmeros danos ao meio ambiente e à saúde humana. Tendo em vista o desenvolvimento de uma solução eficiente e sustentável para o tratamento destes resíduos, muitas vezes industriais, o trabalho tem como objetivo principal o estudo da eficiência de remoção do cromo VI através da biomassa da semente de Flamboyant, obtida após a trituração, secagem e tratamento ácido da semente. A pesquisa baseia-se no uso da biomassa como adsorvente, uma vez que, as sementes de Flamboyant são encontradas com maior disponibilidade no território brasileiro, não possuem custos elevados e são provenientes de uma fonte renovável. Os estudos de adosrção contendo cromo hexavalente e a biomassa apresentaram resultados satisfatórios, em torno de 85 % de remoção, com isso, a biomassa de Flamboyant provou-se ser um potencial adsorvente.
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