Abstract
This study assessed the phenolic content, antioxidant capacity, and phytochemical composition of methanolic extracts from Portuguese Mentha pulegium L. and Lavandula stoechas L. Through spectrophotometric methods (TPC, FRAP, and DPPH), high-resolution techniques (HPLC-ESI(-)-HRMS/MS), along with multivariate techniques (PCA and cluster analysis). A total of 24 to 26 metabolites were identified across the analyzed plant species, including flavonoids, phenolic acids, terpenoids, jasmonates, and fatty acids. M. pulegium was primarily composed of diosmin and hesperidin, whereas L. stoechas exhibited amounts of rosmarinic acid and associated phenolic compounds. Multivariate and correlation analyses demonstrated variability within species and emphasized connections among metabolite categories, biosynthetic routes and environmental influences like altitude. Inland accessions of M. pulegium from Beja, Portalegre and Évora showed elevated TPC and FRAP levels while DPPH activity fluctuated according to distinct metabolite profiles. Despite these variations, phytochemical diversity did not adhere to a geographic trend, indicating that genetic and biosynthetic elements are more influential. The interplay between flavonoids and phenolic acids seemed crucial in determining antioxidant activity. Overall, the Portuguese germplasm of both species demonstrates substantial bioactive potential and chemical diversity, underscoring its value for food, nutraceutical, and pharmaceutical applications. These findings provide a scientific basis for selecting promising accessions and developing future biotechnological strategies.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
The analyzed plants had 24 to 26 identified metabolites.
- Taxon
- Mentha pulegium L.
Mentha pulegiumt0 - Outcome
- metabolitese0
- Value
- 24 to 26 metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A total of 24 to 26 metabolites were identified across the analyzed plant species”
t0“Mentha pulegium L. and Lavandula stoechas L.”
Claim · model-written summary
M. pulegium was primarily composed of diosmin and hesperidin.
- Taxon
- M. pulegiumMentha pulegiume0
- Outcome
- diosmin and hesperidine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. pulegium was primarily composed of diosmin and hesperidin”
Claim · model-written summary
L. stoechas exhibited rosmarinic acid and associated phenolics.
- Taxon
- L. stoechas
Lavandula stoechase0 - Outcome
- rosmarinic acid and associated phenolic compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L. stoechas exhibited amounts of rosmarinic acid and associated phenolic compounds”
Claim · model-written summary
Metabolite categories varied within species and were connected with biosynthetic routes and altitude.
- Taxon
- Mentha pulegium L.Mentha pulegiumt0
- Outcome
- variability within speciese0
- Setting
- altitudee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Multivariate and correlation analyses demonstrated variability within species and emphasized connections among metabolite categories, biosynthetic routes and environmental influences like altitude”
t0“Mentha pulegium L. and Lavandula stoechas L.”
Claim · model-written summary
Inland M. pulegium accessions had elevated TPC and FRAP levels.
- Taxon
- M. pulegiumMentha pulegiume0
- Outcome
- TPC and FRAP levelse0
- Direction
- elevatede0
- Setting
- Beja, Portalegre and Évorae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inland accessions of M. pulegium from Beja, Portalegre and Évora showed elevated TPC and FRAP levels”
Claim · model-written summary
DPPH activity fluctuated with distinct metabolite profiles.
- Taxon
- Mentha pulegium L.Mentha pulegiumt0
- Compound
- metabolite profilese0
- Outcome
- DPPH activitye0
- Direction
- fluctuatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPPH activity fluctuated according to distinct metabolite profiles”
t0“Mentha pulegium L. and Lavandula stoechas L.”
Claim · model-written summary
Phytochemical diversity did not follow geography.
- Taxon
- Mentha pulegium L.Mentha pulegiumt0
- Outcome
- phytochemical diversitye0
- Direction
- did not adheree0
- Setting
- geographice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phytochemical diversity did not adhere to a geographic trend”
t0“Mentha pulegium L. and Lavandula stoechas L.”
Claim · model-written summary
Flavonoids and phenolic acids appeared important for antioxidant activity.
- Taxon
- Mentha pulegium L.Mentha pulegiumt0
- Compound
- flavonoids and phenolic acidse0
- Outcome
- antioxidant activitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interplay between flavonoids and phenolic acids seemed crucial in determining antioxidant activity”
t0“Mentha pulegium L. and Lavandula stoechas L.”
Claim · model-written summary
Portuguese germplasm showed substantial bioactive potential and chemical diversity.
- Taxon
- Mentha pulegium L.Mentha pulegiumt0
- Outcome
- substantial bioactive potential and chemical diversitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Portuguese germplasm of both species demonstrates substantial bioactive potential and chemical diversity”
t0“Mentha pulegium L. and Lavandula stoechas L.”