Stabilization of anthocyanin extract from jabuticaba skins by encapsulation using supercritical CO2 as solvent

Santos, Diego T.; Albarelli, Juliana Q.; Beppu, Marisa M.; Meireles, M. Ângela A.

doi:10.1016/j.foodres.2011.04.019

Cited by 134 publications

(67 citation statements)

References 30 publications

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“…The freeze-dried capsules were observed to be white for the blank while purplish to blackish for the anthocyanin-loaded capsules. Similar characteristics of the product were obtained with those of the encapsulated anthocyanin extract from Jabuticaba skins using polyethylene glycol (Santos et al, 2013).…”

Section: Encapsulation Of Anthocyaninsupporting

confidence: 63%

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Encapsulation of Anthocyanins from Black Rice (Oryza Sativa L.) Bran Extract using Chitosan-Alginate Nanoparticles

Bulatao¹,

Samin²,

Salazar³

et al. 2017

JFR

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This study was conducted to extract and encapsulate anthocyanins from black rice bran using chitosan-alginate nanoparticles. Ten black rice varieties were screened for the anthocyanin content and the variety with the highest anthocyanins was used for the encapsulation. The anthocyanins were extracted by defatting the bran with n-hexane and soaking it with 85% acidified ethanol. The crude anthocyanin extract (CAE) was freeze-dried at -110°C for 48 h and then encapsulated in chitosan-alginate nanoparticles using two processes: ionic pre-gelation and polyelectrolyte complex formation. The mass ratio of chitosan and alginate polymers used in this study was 100:10. The treatments applied were as follows: T 0 -0 mg CAE, T 1 -10 mg CAE, T 2 -20 mg CAE, and T 3 -30 mg CAE. The resulting capsules were characterized in terms of chemical properties, surface morphology, particle size, polydispersive index, encapsulation efficiency, and 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity. Screening of rice samples indicated that Ominio bran had the highest anthocyanin content (36.11 mg/g). Anthocyanins were successfully encapsulated in the matrix as shown by the Scanning Electron Microscopy images and Fourier Transform Infrared spectra of the anthocyanin-loaded chitosan-alginate nanoparticles. Among the different concentrations of CAE, T 3 had the highest encapsulation efficiency (68.9%) and antioxidant scavenging activity (38.3%) while T 1 and T 2 had the lowest. Ascending particle size was observed for T 0 (358.5 nm), T 3 (467.9 nm), T 1 (572.3 nm), and T 2 (635.9 nm). All anthocyanin-loaded capsules were found to be of nano-size (<1000 nm). The study concluded that chitosan-alginate nanoparticles can be a good encapsulating material for anthocyanin.

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Section: Encapsulation Of Anthocyaninsupporting

confidence: 63%

“…TAC of the anthocyanin-loaded capsules was determined using the modified method of Santos et al (2013). The TAC of unencapsulated samples was measured at 535 nm using UV-Vis Spectrophotometer (U-3210, Hitachi, Japan).…”

Section: Encapsulation Efficiency Of the Anthocyanin-loaded Capsulesmentioning

confidence: 99%

Encapsulation of Anthocyanins from Black Rice (Oryza Sativa L.) Bran Extract using Chitosan-Alginate Nanoparticles

Bulatao¹,

Samin²,

Salazar³

et al. 2017

JFR

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“…Since pure PLGA showed only one significant change in the heat flow at 40 ºC, that characterizes its glass transition temperature, the peaks observed for the SAS particles near 35 ºC are probably related to the polymer coating. The slight change observed in the polymer heat flow when the SAS process is used was already noticed in the literature (Mezzomo et al, 2012;Visentin et al, 2012;Santos et al, 2013;Mezzomo et al, 2015;Benelli et al, 2014) and it can be related to the effect of CO2 absorption on PLGA (Pini et al, 2008). According to the last authors, the interaction between supercritical CO2 and the polymer leads to a plasticization of the polymer also at low temperatures, favoring the penetration and incorporation of bioactive compounds.…”

Section: Morphology and Size Of Particlesmentioning

confidence: 71%

Encapsulation of Extract From Winery Industry Residue Using the Supercritical Anti-Solvent Technique

Mezzomo

Oliveira

Comim

et al. 2016

Braz. J. Chem. Eng.

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-Grape pomace (seed, skin and stem) is a winery byproduct with high levels of biologically active compounds, such as antioxidants and antimicrobials, that could be converted into high added-value products. Since these components are easily degraded by oxygen, light and high temperature exposure, stabilization is important, for instance, by a microencapsulation process. Therefore, the objective of this study was to investigate the influence on the particle characteristics of the operational conditions applied in the Supercritical Anti-Solvent (SAS) process for the co-precipitation of grape pomace extract and poly(-lactic-coglycolic acid) (PLGA). The morphology and size of the particles formed, their stability and thermal profile were evaluated, and also the co-precipitation efficiency. The conditions studied allowed the production of microparticles with spherical shape for all operational conditions, with estimated particle size between 4 ± 2 and 11 ± 5 µm, and very good co-precipitation efficiencies (up to 94.4 ± 0.6%). The co-precipitated extract presented higher stability compared to the crude extract, indicating the effectiveness of the co-precipitation process and coating material against degradation processes.

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“…The lo w stability during ext raction, formu lat ion, purificat ion and storage of some class of bioactive co mpounds has influenced all these steps, which are being studied by different researchers interested in novel forms for processing these compounds with minimu m degradation [9].The most important bioactive principles of Ginseng are saponins. Gradual degradation was observed with further increase in temperature resulting in co mplete destruction of saponins at temperatures > 543 K. Hydrothermo lysis of triterpenoid and steroid saponins occurred upon heating in water at 473-513 K resulting in the production of aglycones, prosapogenins, and sugars [10,11].…”

Section: Introductionmentioning

confidence: 99%

Pressurized Organic Solvent Extraction with On-line Particle Formation by Supercritical Anti Solvent Processes

Santos¹,

Barbosa²,

Broccolo³

et al. 2012

fph

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In this work, anovel on-line process for pressurised hot organic solvent extraction of antio xidants from plantsas well as precip itation of the extract with or without a carrier material in one step was developed. This process has been called OEPO,Organic solvent Ext raction and On-line particle formation. With this process, different products with a very low residual organic solvent concentration (< 50 ppm) can be obtained by the use of supercritical CO 2 as anti solvent for solvent elimination.OEPO process consists of hyphenated Pressurized Liquid Extraction (PLE)-Supercritical Anti So lvent (SAS) precipitation, PLE-SAS co-p recipitat ion and PLE-Supercritical Fluid Ext raction of Emulsions (SFEE). OEPO process was successfully developed using Brazilian g inseng roots (Pfa ffiaglomerata)as a model case using ethyl acetate as extracting solvent. Results were co mpared, in terms of antio xidant activity o r mo rphology, with the ones obtained by each process separately.In addition, an optimizat ion study for antio xidants recovery was performed using ethyl acetate as extracting solvent during PLE process. Optimu m PLE extracts were produced under moderate extraction temperature (373 K) and high static extraction t ime (15 min). Under this condition an ext raction yield o f 1% (d ry basis, d.b.) and an antioxidant activity of 53% are obtained, wh ich was appro ximately 14% higherthan that observed after PLE-SAS p recipitation and after SAS precipitation performed in two steps (step one -PLE ext raction; step two -SAS precipitation by the use of the ext ract solution produced by step one stored).Similar behavior (hyphenated process producing similar p roducts than the two step process done separately) was observed for PLE-SAS co-precip itation and PLE-SFEE indicating that the OEPO process developed in this work can be considered as a suitable and p ro mising process to obtain, in only one step, different products (precipitated extract, co-precipitated extract or encapsulated extract in suspension), direct ly fro m plant materials.

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Stabilization of anthocyanin extract from jabuticaba skins by encapsulation using supercritical CO2 as solvent

Cited by 134 publications

References 30 publications

Encapsulation of Anthocyanins from Black Rice (Oryza Sativa L.) Bran Extract using Chitosan-Alginate Nanoparticles

Encapsulation of Anthocyanins from Black Rice (Oryza Sativa L.) Bran Extract using Chitosan-Alginate Nanoparticles

Encapsulation of Extract From Winery Industry Residue Using the Supercritical Anti-Solvent Technique

Pressurized Organic Solvent Extraction with On-line Particle Formation by Supercritical Anti Solvent Processes

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