| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 617.03 KB | Adobe PDF |
Orientador(es)
Resumo(s)
The rapid increase of the world population has promoted a more sustainable
and efficient use of natural resources. To achieve complete and proper upcycling of plant crops,
it is important to know their potential for industrial exploitation. Cardoon (Cynara cardunculus L.)
is a species native to the Mediterranean basin widely used in different sectors, including food
and pharmaceuticals. Despite their multiple industrial applications, not all plant tissues have
been incorporated into the value chain. Therefore, this work aimed to characterize the phenolic
composition and bioactive properties of cardoon blades throughout the phenological growth cycle. In
addition to the structural variety of phytochemicals detected in the blade extracts, their antioxidant,
anti-inflammatory, anti-proliferative, and antimicrobial properties were also highlighted. While
immature material showed higher levels of phenolic compounds and greater potential to inhibit lipid
peroxidation, samples at higher development stages had greater anti-proliferative, anti-inflammatory,
and antimicrobial potential. These results demonstrate that the growth cycle influences the bioactive
potential of cardoon blades and will be useful to establish suitable industrial applications, such as the
development of ingredients for functional foods and nutraceuticals, among other products.
Abstract: Cardoon (Cynara cardunculus var. altilis) blades were collected at sixteen sampling dates (B1–B16) to
study the influence of the phenological growth stage on the phenolic composition and biological properties.
Twenty phenolic compounds were identified, among which trans 3,4-O-dicaffeoylquinic acid, 5-O-
caffeoylquinic acid, and luteolin-O-hexoside (39.6, 42.6, and 101.0 mg/g extract, respectively) were the main
compounds. Immature blades (B3) had a higher content of phenolic compounds (178 mg/g extract) and
a greater ability to inhibit the formation of thiobarbituric acid reactive substances (IC50 of 1.61 μg/mL).
Samples at more advanced growth stages revealed a greater capacity to inhibit oxidative hemolysis (B8, IC50
of 25 and 47.4 μg/mL for ∆t of 60 and 120 min, respectively) and higher cytotoxic (B8–B13, GI50 between
7.1 and 17 μg/mL), anti-inflammatory (B13, IC50 of 10 μg/mL), and antibacterial activities. In turn, the
antifungal activity varied depending on the tested fungi. All these results suggest that maturity influences
the phenolic composition and bioactive properties of cardoon blades, which reveal great potential for the
development of bioactive ingredients for food and pharmaceutical applications, among others.
Descrição
Palavras-chave
Cardoon blades Phenolic compounds Phenological growth stage Antioxidant activity Tumor cell growth inhibition Antibacterial/antifungal activity Sustainable ingredients
Contexto Educativo
Citação
Mandim, Filipa; Petropoulos, Spyridon Α.; Pinela, José; Dias, Maria Inês; Kostić, Marina; Soković, Marina; Ferreira, Isabel C.F.R.; Barros, Lillian; Santos-Buelga, Celestino (2022). Phenolic composition and antioxidant, anti-inflammatory, cytotoxic, and antimicrobial activities of cardoon blades at different growth stages. Biology. EISSN 2079-7737. 11:5, p. 1-17