Xyloglucan from Hymenaea courbaril var. courbaril seeds as encapsulating agent of l-ascorbic acid

Farias, Mirla Dayanny Pinto; Albuquerque, Priscilla Barbosa Sales de; Soares, Paulo R.; Sá, Daniele Maria Alves Teixeira; Vicente, António A.; Carneiro-da-Cunha, Maria G.

doi:10.1016/j.ijbiomac.2017.10.016

Cited by 29 publications

(12 citation statements)

References 45 publications

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“…The system shows strong antioxidant activity and inhibits the formation of furan, an ascorbic acid degradation product, during the preheated process of products. After 60 days of storage at room temperature, the retention of ascorbic acid in the system is still around 90% [ 92 ]. However, the high viscosity of high-concentration polymers limits the granulation by spray-drying.…”

Section: Strategies For Improving the Encapsulation And Delivery Of Ascorbic Acidmentioning

confidence: 99%

Chemical Stability of Ascorbic Acid Integrated into Commercial Products: A Review on Bioactivity and Delivery Technology

et al. 2022

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The L-enantiomer of ascorbic acid is commonly known as vitamin C. It is an indispensable nutrient and plays a key role in retaining the physiological process of humans and animals. L-gulonolactone oxidase, the key enzyme for the de novo synthesis of ascorbic acid, is lacking in some mammals including humans. The functionality of ascorbic acid has prompted the development of foods fortified with this vitamin. As a natural antioxidant, it is expected to protect the sensory and nutritional characteristics of the food. It is thus important to know the degradation of ascorbic acid in the food matrix and its interaction with coexisting components. The biggest challenge in the utilization of ascorbic acid is maintaining its stability and improving its delivery to the active site. The review also includes the current strategies for stabilizing ascorbic acid and the commercial applications of ascorbic acid.

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Section: Strategies For Improving the Encapsulation And Delivery Of Ascorbic Acidmentioning

confidence: 99%

Chemical Stability of Ascorbic Acid Integrated into Commercial Products: A Review on Bioactivity and Delivery Technology

et al. 2022

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“…It is a process in which active ingredients are enclosed within a layer of coating/wall polymer to protect them from the external environment [17]. Different approaches have been used to stabilize AA such as fluidized bed coating [18,19], liposomes [20,21], spray chilling [22,23], solvent evaporation [24,25], melt extrusion [26,27], ionic gelation [28,29,30], complex coacervation, [31,32] or spray drying [24,33,34,35,36,37]. Among these methods, spray drying is one of the most reasonably economical, straightforward, continuous and simple to scale-up technique [38,39].…”

Section: Introductionmentioning

confidence: 99%

Spray-Drying Performance and Thermal Stability of L-ascorbic Acid Microencapsulated with Sodium Alginate and Gum Arabic

Barra¹,

Márquez²,

Cháfer

et al. 2019

Molecules

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The potential of sodium alginate (ALG) and gum arabic (GA) as wall polymers for L-ascorbic acid (AA) encapsulation as a tool for their preservation against the thermo-oxidative degradation was investigated. The influence of such polymers used as wall material on the AA-content, size, encapsulation efficiency, encapsulation yield and thermo-oxidative stability were evaluated. The AA-microparticles were obtained using the spray-drying technique. An experimental Taguchi design was employed to assess the influence of the variables in the encapsulation process. The microparticles morphology and size distribution were characterized by scanning electron microscopy and laser diffraction. The thermal stability of AA microparticles was studied by differential scanning calorimetry and thermogravimetry analysis. This work points out the viability to encapsulate AA using GA and ALG through a spray-drying process. In general, a product yield ranging from 35.1% to 83.2% and an encapsulation efficiency above 90% were reached. Spherical microparticles with a smooth surface were obtained with a mean diameter around 6 μm and 9 μm for the those prepared with GA and ALG, respectively. The thermo-oxidative analysis showed that both polymers allow maintaining AA stable up to 188 °C, which is higher than the traditional processing temperature used in the fish feed industry.

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“…Xyloglucanase activity was assayed using 50 μL of 1% xyloglucan obtained from Hymenaea courbaril var. courbaril seeds, as previously described [ 61 ] in sodium acetate buffer (100 mM, pH 5.0) and 50 μL of enzyme (culture supernatant). After a 30 min incubation at 50 °C, 100 μL of DNS was added, followed by heating at 95 °C for 5 min to allow color development.…”

Section: Methodsmentioning

confidence: 99%

Molecular Characterization of Xyloglucanase cel74a from Trichoderma reesei

Lopes

Carraro

Silva

et al. 2021

IJMS

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Background: The filamentous fungus Trichoderma reesei is used on an industrial scale to produce enzymes of biotechnological interest. This fungus has a complex cellulolytic system involved in the degradation of lignocellulosic biomass. However, several aspects related to the regulation of the expression of holocellulolytic genes and the production of cellulases by this fungus are still understood. Methods: Here, we constructed a null mutant strain for the xyloglucanase cel74a gene and performed the characterization of the Δcel74a strain to evaluate the genetic regulation of the holocellulases during sugarcane bagasse (SCB) cultivation. Results: Our results demonstrate that the deletion of xyloglucanase cel74a may impact the regulation of holocellulase expression during SCB cultivation. The expression of cellulases cel7a, cel7b, and cel6a was reduced in Δcel74a strain, while the hemicellulases xyn1 and xyn2 were increased in the presence of SCB. The cel74a mutation also affected the xyloglucan hydrolysis patterns. In addition, CEL74A activity was modulated in the presence of calcium, suggesting that this ion may be required for efficient degradation of xyloglucan. Conclusions: CEL74A affects the regulation of holocellulolytic genes and the efficient degradation of SCB in T. reesei. This data makes a significant contribution to our understanding of the carbon utilization of fungal strains as a whole.

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Xyloglucan from Hymenaea courbaril var. courbaril seeds as encapsulating agent of l-ascorbic acid

Cited by 29 publications

References 45 publications

Chemical Stability of Ascorbic Acid Integrated into Commercial Products: A Review on Bioactivity and Delivery Technology

Chemical Stability of Ascorbic Acid Integrated into Commercial Products: A Review on Bioactivity and Delivery Technology

Spray-Drying Performance and Thermal Stability of L-ascorbic Acid Microencapsulated with Sodium Alginate and Gum Arabic

Molecular Characterization of Xyloglucanase cel74a from Trichoderma reesei

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