Repository logo
 
Publication

Antioxidant activity and nutritional value of Mentha spicata L.: a comparison between reserve and standard lots

2015Conference object Open access
Simple item page
dc.contributor.authorRita, Íngride
dc.contributor.authorHeleno, Sandrina A.
dc.contributor.authorMartins, Natália
dc.contributor.authorPereira, Carla
dc.contributor.authorBarros, Lillian
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2015-11-11T10:47:53Z
dc.date.available2015-11-11T10:47:53Z
dc.date.issued2015
dc.description.abstractCurrently, the consumption of tea and herbal infiisions is increasing só much that its daily worldwide consumption is evaluated in more than three million cups. Therefore, in a competitive and sophisticated sector as the tea market, the innovation and development of new products is imperative (Hicks, 2009; Li et al., 2013). Nowadays, we have at our disposal a new range of emerging products, such as the designated "reserve lots" exclusively prepared by using the younger parts (apical leaves) ofthe plant collected in the hot summer months; the standard lots do not have these harvest specific requirements. In this perspective, the present study was accomplished to understand the differences between two lots of Mentha spicata L. (spearmint) for infusion preparation, widely used due to its exquisite and outstanding flavour, as well as for its antioxidant properties (Goméz-Prieto et al., 2007). The nutritional value, the energetic contribution, and the antioxidant activity, as well as the bioactive compounds (phenolics and flavonoids) content of both standard and reserve lots, were evaluated. The nutritional value was determined through the infüsion sugars content, once these were the only nutrients present in the preparations; the analysis was carried out by high performance liquid chromatography coupled to a refraction index detector (HPLC-RI). The presence of fmctose, glucose and sucrose was detected in very low concentrations on both infüsions, with the reserve lot revealing slightly higher amounts. Sucrose was the most abundant sugar, present in a concentoration of 5.9 mg/100 mL in the standard lot and 8.4 mg/100 mL in the reserve lot. Total sugars and energy were 13.2 mg/100 mL and 53 cal/100 mL, respectively, in the standard lot; and 16.9 mg/100 mL and 67.4 cal/100 mL, respectively, in the reserve lot. The antioxidant activity of the infüsions was assessed by different assays (free radicais scavenging activity, reducing power and lipid peroxidation inhibition), whereas total phenolics and flavonoids were estimated by colorimetric assays. The reserve lot presented the lowest EC50 values, corresponding to a higher antioxidant activity, in ali the assays performed (152 to 336 |ig/mL), in comparison to the standard lot (173 to 546 |^g/mL). Both the iníüsions revealed higher potential in lipid peroxidation inhibition, in concentrations of 173 (standard tot) and 152 [ig/mL (reserve lot), followed by reducing power (301 and 198 l^g/mL, respectively) and free radicais scavenging activity (546 and 336 |^g/mL, respectively). In agreement with the antioxidant activity results, the amounts of total phenolics and flavonoids were higher in the reserve lot (2. 86 and 0.378 mg gallic acid equivalents- GAE/mL) when compared to the standard lot (1. 83 and 0.268 mg GAE/mL). Overall, in our perspective, these results represent a major contribution to elucidate the consumer about the bioactive effects of new emerging tea products such as reserve lots, which actually showed a higher antioxidant activity.pt_PT
dc.identifier.citationRita, Íngride; Heleno, Sandrina A.; Martins, Natália; Pereira, Carla; Barros, Lillian; Ferreira, isabel C.F.R. (2015). Antioxidant activity and nutritional value of Mentha spicata L.: a comparison between reserve and standard lots. In 5th MoniQA International Conference 2015. Porto. ISBN 978-3-9504109-0-7pt_PT
dc.identifier.isbn978-3-9504109-0-7
dc.identifier.urihttp://hdl.handle.net/10198/12318
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMentha spicata L.pt_PT
dc.subjectAntioxidant activitypt_PT
dc.subjectNutritional valuept_PT
dc.subjectReserve lotpt_PT
dc.subjectStandard lotpt_PT
dc.titleAntioxidant activity and nutritional value of Mentha spicata L.: a comparison between reserve and standard lotspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.title5th MoniQA International Conference 2015, Food and Helath- Risks and beneffitspt_PT
person.familyNameHeleno
person.familyNamePereira
person.familyNameBarros
person.familyNameFerreira
person.givenNameSandrina A.
person.givenNameCarla
person.givenNameLillian
person.givenNameIsabel C.F.R.
person.identifier1415151
person.identifier469085
person.identifier144781
person.identifier.ciencia-id8B18-3095-6FC9
person.identifier.ciencia-idEF10-2739-2B70
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0001-7224-1098
person.identifier.orcid0000-0003-0093-771X
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridL-5951-2014
person.identifier.ridK-1629-2016
person.identifier.ridJ-3600-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id30067731800
person.identifier.scopus-author-id55627876424
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id36868826600
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicatione89b5bf5-d315-49b6-871e-fa8eb6030676
relation.isAuthorOfPublicatione07a8e12-52bb-47c5-bae7-41a5f648213b
relation.isAuthorOfPublication3af07ffe-f914-48ba-a5d5-efcf70fdce01
relation.isAuthorOfPublicationbd0d1537-2e03-41fb-b27a-140af9c35db8
relation.isAuthorOfPublication.latestForDiscovery3af07ffe-f914-48ba-a5d5-efcf70fdce01

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Poster Int. 170.pdf
Size:
177.12 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIMO - Resumos em Proceedings Não Indexados à WoS/Scopus