António Paranhos

ORCID: 0000-0003-4289-3612
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About
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Research Areas
  • Phytochemicals and Antioxidant Activities
  • Essential Oils and Antimicrobial Activity
  • Phytochemistry and Biological Activities
  • Biochemical Analysis and Sensing Techniques
  • melanin and skin pigmentation
  • Natural product bioactivities and synthesis
  • Allelopathy and phytotoxic interactions
  • Natural Antidiabetic Agents Studies
  • Cancer Risks and Factors
  • Fatty Acid Research and Health
  • Plant biochemistry and biosynthesis
  • Plant Parasitism and Resistance
  • Phytoestrogen effects and research
  • Bee Products Chemical Analysis
  • Nanoparticles: synthesis and applications

University of Coimbra
2006-2024

Agrimony ( Agrimonia eupatoria L.) (Ae) is used in traditional medicine to treat inflammatory and oxidative related diseases. Therefore, this study focuses on the anti‐inflammatory analgesic potential of Ae infusion (AeI). Phenolic compounds characterization was achieved by HPLC‐PDA‐ESI/MS n . To evaluate antioxidant potential, 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH), superoxide anion, hydroxyl radical, SNAP assays were used. In vitro activity AeI investigated LPS‐stimulated macrophages...

10.1155/2017/8309894 article EN cc-by Evidence-based Complementary and Alternative Medicine 2017-01-01

Fragaria vesca L. (F. vesca), popularly known as wild strawberry, is a plant from the Rosaceae family, found in temperate and subtropical areas of northern hemisphere. F. leaves have been shown to antiseptic, emollient, dermatological protection properties, due presence bioactive compounds, such flavonoids, phenolic acids, ellagitannins, proanthocyanidins. In this study, extract was obtained by an optimized extraction process, characterized HPLC, ROS scavenging activity, cytotoxicity assays...

10.3390/antiox9020154 article EN cc-by Antioxidants 2020-02-14

Overexpression of melanin contributes to darkening plant and fruit tissues skin hyperpigmentation, leading melasma or age spots. Although biosynthesis is complex involves several steps, a single enzyme known as tyrosinase key regulating this process. The melanogenesis pathway initiated by oxidation the starting material l-tyrosine (or l-DOPA) dopaquinone tyrosinase; resulting quinone then serves substrate for subsequent steps that eventually lead production melanin. Medicinal plants are...

10.3390/ijms232113536 article EN International Journal of Molecular Sciences 2022-11-04

The results of a survey 28 over-the-counter tablet preparations isoflavones extracted from soy and 2 with black cohosh that are available in Portuguese pharmacies presented. All were remedies for hot flushes post-menopause related problems. Their isoflavone content was analysed by HPLC/DAD LC/MS-MS. show the isoflavonoids extracts sold pharmaceutical companies Portugal mainly daidzin, glycitin genistin.

10.1177/1934578x0600101111 article EN Natural Product Communications 2006-11-01
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