Influence of temperature, solvent and pH on the selective extraction of phenolic compounds from tiger nuts by-products: Triple-TOF-LC-MS-MS characterization.
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Influence of temperature, solvent and pH on the selective extraction of phenolic compounds from tiger nuts by-products: Triple-TOF-LC-MS-MS characterization.

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Influence of temperature, solvent and pH on the selective extraction of phenolic compounds from tiger nuts by-products: Triple-TOF-LC-MS-MS characterization.

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dc.contributor.author Roselló Soto, Elena
dc.contributor.author Martí Quijal, Francisco Juan
dc.contributor.author Cilla Tatay, Antonio
dc.contributor.author Munekata, Paulo E. S.
dc.contributor.author Lorenzo, Jose M.
dc.contributor.author Remize, Fabienne
dc.contributor.author Barba Orellana, Francisco Jose
dc.date.accessioned 2019-03-25T08:43:43Z
dc.date.available 2019-03-25T08:43:43Z
dc.date.issued 2019
dc.identifier.uri http://hdl.handle.net/10550/69567
dc.description.abstract The aim of this study was to assess the effect of temperature, solvent (hydroethanolic mixtures) and pH on the recovery of individual phenolic compounds from 'horchata' by-products. These parameters were optimized by response surface methodology and triple-TOF-LC-MS-MS was selected as the analytical tool to identify and quantify the individual compounds. The optimum extraction conditions were 50% ethanol, 35 °C and pH 2.5, which resulted in values of 222.6 mg gallic acid equivalents (GAE)/100 g dry matter and 1948.1 µM trolox equivalent (TE)/g of dry matter for total phenolic content (TPC) and trolox equivalent antioxidant capacity (TEAC), respectively. The extraction of phenolic compounds by the conventional solvent method with agitation was influenced by temperature (p = 0.0073), and more strongly, by the content of ethanol in the extraction solution (p = 0.0007) while the pH did not show a great impact (p = 0.7961). On the other hand, the extraction of phenolic acids was affected by temperature (p = 0.0003) and by ethanol amount (p < 0.0001) but not by the pH values (p = 0.53). In addition, the percentage of ethanol influenced notably the extraction of both 4-vinylphenol (p = 0.0002) and the hydroxycinnamic acids (p = 0.0039). Finally, the main individual phenolic extracted with hydroethanolic mixtures was 4-vinylphenol (303.3 μg/kg DW) followed by spinacetin3-O-glucosyl-(1→6)-glucoside (86.2 μg/kg DW) and sinensetin (77.8 μg/kg DW).
dc.relation.ispartof Molecules, 2019, vol. 24, num. 4, p. 797
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Roselló Soto, Elena Martí Quijal, Francisco Juan Cilla Tatay, Antonio Munekata, Paulo E. S. Lorenzo, Jose M. Remize, Fabienne Barba Orellana, Francisco Jose 2019 Influence of temperature, solvent and pH on the selective extraction of phenolic compounds from tiger nuts by-products: Triple-TOF-LC-MS-MS characterization. Molecules 24 4 797
dc.subject Nutrició
dc.subject Orxata
dc.title Influence of temperature, solvent and pH on the selective extraction of phenolic compounds from tiger nuts by-products: Triple-TOF-LC-MS-MS characterization.
dc.type info:eu-repo/semantics/article
dc.date.updated 2019-03-25T08:43:43Z
dc.identifier.doi https://doi.org/10.3390/molecules24040797
dc.identifier.idgrec 130492

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