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Impact of gamma irradiation on nutritional composition and antioxidant activity of Aloysia citriodora Paláu and Melittis melissophyllum L.

2014Conference paper Open access
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dc.contributor.authorPereira, Eliana
dc.contributor.authorAntonio, Amilcar L.
dc.contributor.authorBarros, Lillian
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2015-07-28T14:59:05Z
dc.date.available2015-07-28T14:59:05Z
dc.date.issued2014
dc.description.abstractAloysia citriodora Paláu and Melittis melissophyllum L. are examples of plants that have been used for medicinal purposes as dietary supplements or infusions [1,2]. The incorporation of plant extracts/compounds in pharmaceuticals has been increasing. However, due to the high demand of the pharmaceutical industry for the use of raw materials with good microbiological quality, decontamination techniques should be applied. Irradiation arises as an alternative [3]. The aim of this work was to evaluate the effects of gamma irradiation (0 kGy – control, 1 kGy and 10 kGy) on nutritional value and antioxidant activity of A. triphylla and M. melissophyllum. The nutritional value was determined following official analysis methodologies; free sugars were analyzed by high performance liquid chromatography coupled to a refraction index detector (RI-HPLC), fatty acids by gas chromatography coupled with a flame ionization detector (GC-FID), and tocopherols by HPLC-fluorescence. The antioxidant properties of the infusions were evaluated through free radicals scavenging activity, reducing power and inhibiting of lipid peroxidation. In general, gamma irradiation protected fructose, trehalose, and the major fatty acids found in A. citriodora. Furthermore, the dose of 10 kGy protected oxalic, malic, and quinic acids, as also protein and ash levels and revealed the highest antioxidant activity for the majority of the assays. The dose of 1 kGy protected all isoforms of tocopherols detected in the plant. Regarding M. melissophyllum, it was concluded that the control sample (non-irradiated) showed the highest antioxidant activity, as well as the highest levels of -tocopherol. However, in general, it was observed that a dose of 10 kGy maintains the nutritional properties of the plant, such as protein and ash levels. Thus, we can conclude that irradiation is a decontaminating technique that does not interfere drastically with the chemical properties of the studied plants.por
dc.description.sponsorshipProder (Project nº 53514, AROMAP) and to Fundação para a Ciência e a Tecnologia (FCT, Portugal) for financial support to CIMO (strategic project PEst-OE/AGR/UI0690/2011). The authors are also grateful to “MaisErvas - Aromáticas e Medicinais” for samples providing.por
dc.identifier.citationPereira, Eliana; Antonio, Amilcar L.; Barros, Lillian; Ferreira, Isabel C.F.R. (2014). Impact of gamma irradiation on nutritional composition and antioxidant activity of Aloysia citriodora Paláu and Melittis melissophyllum L. In 62nd International Congress and Annual Meeting of the Society for Medicianl Plant and Natural Product Research. Guimarãespor
dc.identifier.urihttp://hdl.handle.net/10198/11990
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherUniversidade do Minhopor
dc.relationProject 53514, AROMAP
dc.relationPEst-OE/AGRIUI069012011
dc.subjectAromatic plantspor
dc.subjectAloysia citriodora P.por
dc.subjectMelittis melissophyllum L.por
dc.subjectGamma irradiationpor
dc.subjectNutritional compositionpor
dc.subjectAntioxidant activitypor
dc.titleImpact of gamma irradiation on nutritional composition and antioxidant activity of Aloysia citriodora Paláu and Melittis melissophyllum L.por
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferencePlaceGuimarães, Portugalpor
oaire.citation.title62nd International Congress and Annual Meeting of the Society for Medicianl Plant and Natural Product Researchpor
person.familyNamePereira
person.familyNameAntonio
person.familyNameBarros
person.familyNameFerreira
person.givenNameEliana
person.givenNameAmilcar L.
person.givenNameLillian
person.givenNameIsabel C.F.R.
person.identifier469085
person.identifier144781
person.identifier.ciencia-idBE17-462D-9A75
person.identifier.ciencia-id1014-5259-DE86
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0003-2854-6745
person.identifier.orcid0000-0001-8271-9964
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridQ-8017-2018
person.identifier.ridJ-1960-2014
person.identifier.ridJ-3600-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id55938912300
person.identifier.scopus-author-id44560921900
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id36868826600
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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