Physicochemical Characterization of a Crude Anthocyanin Extract from the Fruits of Jussara (Euterpe edulis Martius): Potential for Food and Pharmaceutical Applications

Favaro, Laura I. L.; Balcão, Victor M.; Rocha, Liliam K. H.; Silva, Erica C.; Oliveira, José Martins de; Vila, Marta Maria Duarte Carvalho; Tubino, Matthieu

doi:10.21577/0103-5053.20180082

Cited by 34 publications

(37 citation statements)

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“…Overall, the hydroethanolic peel extract was more active against Gram-positive bacteria than against Gram-negative bacteria. The same trend was observed by Favaro et al (2018) when exploring the antibacterial activity of a crude anthocyanin extract of Juçara fruit against S. aureus, P. aeruginosa and E. coli via the agar-diffusion method. Although the E. edulis anthocyanin extract had displayed a slightly significant effect against S. aureus, it had no activity against E. coli and P. aeruginosa.…”

Section: Evaluation Of Bioactive Propertiessupporting

confidence: 78%

Chemical composition and biological activities of Juçara (Euterpe edulis Martius) fruit by-products, a promising underexploited source of high-added value compounds

Garcia

Corrêa

Barros

et al. 2019

Journal of Functional Foods

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A B S T R A C TThe pulp of the fruits of Juçara (Euterpes edulis Martius), a native tree of the Atlantic Rainforest of Brazil, is widely consumed thanks to its flavour and nutritional value. The industrial production of Juçara fruit pulp generates solid residues (peel) which are usually discarded. In this work, a hydroalcoholic extract from Juçara peel flour was evaluated for its phenolic profile as well as for its bioactivities. A total of nineteen phenolic compounds were identified in the Juçara peel flour. Among these, seventeen were non-anthocyanin phenolic compounds, namely two phenolic acids, four flavanonols, six flavones, and five flavonols; whereas the two anthocyanin molecules were cyanidin glycoside derivatives. The Euterpe edulis peel flour presented antioxidant activity and antibacterial potential but was not hepatotoxic. These observations corroborate the idea that this byproduct could fit well into the circular bioeconomy concept, thus promoting the Juçara fruit production chain.

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Section: Evaluation Of Bioactive Propertiessupporting

confidence: 78%

Chemical composition and biological activities of Juçara (Euterpe edulis Martius) fruit by-products, a promising underexploited source of high-added value compounds

Garcia

Corrêa

Barros

et al. 2019

Journal of Functional Foods

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“… 44 Although bands close to 1378 and at 1577 cm –1 were tentatively attributed to the C–C stretching, 44 a band at 1377 cm –1 has also been attributed to an O–H in-plane deformation in polyphenols. 43 However, the fact that these bands are only observed in our case for FL5 and FL6 and the respective FL/clay samples (which present a small shift to 1383–1384 and 1583 cm –1 ) suggests an association of these vibrations with a 7-methoxy-substituted A ring of the flavylium cation.…”

Section: Resultscontrasting

confidence: 54%

Hybrid Pigments from Anthocyanin Analogues and Synthetic Clay Minerals

Silva

et al. 2020

ACS Omega

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Flavylium cations are synthetic analogues of anthocyanins, the natural plant pigments that are responsible for the majority of the red, blue, and purple colors of flowers, fruits, and leaves. Unlike anthocyanins, the properties and reactivity of flavylium cations can be manipulated by the nature and position of substituents on the flavylium cation chromophore. Currently, the most promising strategies for stabilizing the color of anthocyanins and flavylium cations appear to be to intercalate and/or adsorb them on solid surfaces and/or in confined spaces. We report here that hybrid pigments with improved thermal stability, fluorescence, and attractive colors are produced by the cation-exchange-mediated adsorption of flavylium cations (FL) on two synthetic clays, the mica-montmorillonite SYn-1, and the laponite SYnL-1. Compared to the FL/SYn-1 hybrid pigments, the FL/SYnL-1 pigments exhibited improved thermal stability as judged by color retention, better preferential adsorption of the cationic form of FL1 at neutral to mildly basic pH (pH 7–8), and lower susceptibility to color changes at pH 10. Although both clays adsorb the cationic form on their external surfaces, SYnL-1 gave more evidence of adsorption in the interlayer regions of the clay. This interlayer adsorption appears to be the contributing factor to the better properties of the FL/SYnL-1 hybrid pigments, pointing to this clay to be a promising inorganic matrix for the development of brightly colored, thermally more stable hybrid pigments based on cationic analogues of natural plant pigments.

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“…Bands corresponding to the skeletal stretching vibration of the aromatic rings and =C-O-C group of flavonoids (1072, 1506, and 1271 cm −1 ) were also visible [58]. The bands situated between 1400 and 1450 cm −1 are assigned to C-N vibration [58]. Besides, symmetrical and asymmetrical stretching vibration for the carboxyl ion (COO-) indicating the existence of carboxylic acid, ester or carbonyl groups can also be observed at 1618 cm −1 [59,60].…”

Section: Incorporation Of Jussara Pulp As a Source Of Anthocyaninsmentioning

confidence: 95%

“…The anthocyanins exhibited absorption bands situated at 2923 cm −1 , which belong to the saturated hydrocarbon groups (corresponding to a methyl group (CH3)); at 1749 cm −1 , fitting the stretching vibration of C-O; and at 1072 cm −1 , corresponding to bending vibration of C-O-C groups (indicating the presence of carbohydrates) [57]. Bands corresponding to the skeletal stretching vibration of the aromatic rings and =C-O-C group of flavonoids (1072, 1506, and 1271 cm −1 ) were also visible [58]. The bands situated between 1400 and 1450 cm −1 are assigned to C-N vibration [58].…”

Section: Incorporation Of Jussara Pulp As a Source Of Anthocyaninsmentioning

confidence: 97%

Development and Characterization of Electrospun Nanostructures Using Polyethylene Oxide: Potential Means for Incorporation of Bioactive Compounds

Ramos

Giaconia

Marco

et al. 2020

Colloids and Interfaces

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The development of processes for stabilization of the properties of bioactive compounds has been studied in recent years, and the use of nanotechnology is among the most discussed routes. The present work addressed the assembly of nanostructures using polyethylene oxide (PEO), the production of core-shell nanofibers (NFs) with bioactive compounds, and the evaluation of their microscopic and physical characteristics. Aqueous solutions of PEO were electrospun by varying different process and solution parameters (PEO and NaCl concentrations, feeding rate, the tip-to-collector distance (TCD), and applied voltage) in order to optimize production of nanostructures. The best condition obtained was evaluated to form core-shell NFs composed by jussara pulp as a source of anthocyanins. To assess the production of NFs with PEO and jussara pulp, feed solutions were prepared in acetate buffer (pH 4.5) with 6% PEO and 10% lyophilized jussara pulp, at a feeding rate of 150 μL·h−1 and TCD of 15 cm using an applied voltage of 10 kV to form core-shell NFs. The results revealed the formation of core-shell NFs with a diameter of 126.5 ± 50.0 nm. The outcomes achieved represent a crucial step in the application of anthocyanins in food systems as pigments, establishing a basis for further research on the incorporation of nanomaterials into foodstuff.

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Physicochemical Characterization of a Crude Anthocyanin Extract from the Fruits of Jussara (Euterpe edulis Martius): Potential for Food and Pharmaceutical Applications

Cited by 34 publications

References 0 publications

Chemical composition and biological activities of Juçara (Euterpe edulis Martius) fruit by-products, a promising underexploited source of high-added value compounds

Chemical composition and biological activities of Juçara (Euterpe edulis Martius) fruit by-products, a promising underexploited source of high-added value compounds

Hybrid Pigments from Anthocyanin Analogues and Synthetic Clay Minerals

Development and Characterization of Electrospun Nanostructures Using Polyethylene Oxide: Potential Means for Incorporation of Bioactive Compounds

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