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Evaluation of operating conditions for extraction of phenolic compounds from sugar beet

2017Conference object Open access
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dc.contributor.authorGuiné, Raquel
dc.contributor.authorGonçalves, Fernando
dc.contributor.authorLerat, Clemence
dc.contributor.authorIdrissi, Teo
dc.contributor.authorRodrigo, Eva
dc.contributor.authorCorreia, Paula
dc.contributor.authorGonçalves, João Carlos
dc.date.accessioned2017-09-27T15:03:42Z
dc.date.available2017-09-27T15:03:42Z
dc.date.issued2017
dc.description.abstractThis work allowed identifying the most suitable extracting conditions to improve the extraction of phenolic compounds with antioxidant activity from sugar beet. For the experiments, the sugar beet was grounded and samples of 5 g were taken to perform extractions with methanol, for different times (15 and 60 min.) and using different volumes of the extraction solvent (50 and 100 mL). For each of the combinations three successive extraction steps were performed and in each extract were quantified the total phenolic compounds (TPC) and the antioxidant activity (AOA), both by spectrophotometric techniques. The results proved that using three successive extraction steps over the same sample was beneficial and allowed increasing the bioactive properties of the extracts. Furthermore, it was also found that clearly an extraction time of 15 min. was appropriate, thus avoiding the need for longer extraction periods. It was further concluded that using 100 mL of extraction solvent was not so improving as compared to 50 mL, and considering the costs and environmental disadvantages associated with methanol, then the lowest volume should be chosen. The TPC in the fresh beetroot varied from 1.5 to 2.5 mg GAE/g and the AOA from 16.7 to 19.3 µmolTE/g.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGuiné, R., Gonçalves, F., Lerat, C., Idrissi, T. E., Rodrigo, E., Correia, P., & Gonçalves, J. C. (2017, September). Evaluation of operating conditions for extraction of phenolic compounds from sugar beet. In Book of Abstracts of 6th International M-Sphere Conference for Multidisciplinarity in Business and Science, Viseu, Portugal, pp.46.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/4662
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectAntioxidant Activitypt_PT
dc.subjectBioactive Phenolspt_PT
dc.subjectExtraction Conditionspt_PT
dc.subjectPhenolic Compoundspt_PT
dc.titleEvaluation of operating conditions for extraction of phenolic compounds from sugar beetpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceViseu, Portugalpt_PT
oaire.citation.endPage46pt_PT
oaire.citation.startPage46pt_PT
oaire.citation.title6th International M-Sphere Conference For Multidisciplinarity in Business and Sciencept_PT
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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