Antioxidant Capacity of Anthocyanins and Other Vegetal Pigments: Properties, Intake and Health Benefits

A special issue of Antioxidants (ISSN 2076-3921). This special issue belongs to the section "Natural and Synthetic Antioxidants".

Deadline for manuscript submissions: 30 October 2024 | Viewed by 721

Special Issue Editors

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Department of Analytical Chemistry, University of Seville, 41012 Sevilla, Spain
Interests: analytical chemistry; food chemistry; food safety and quality; oxidation stability; sensory assessment; spectroscopic techniques; chemometrics
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Analytical Chemistry, Escuela Politécnica Superior, University of Seville, C/Virgen de África 7, E-41011 Seville, Spain
Interests: analytical chemistry; food and environmental chemistry; method development; sample preparation; chromatographic techniques; chemometrics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Anthocyanins, a class of polyphenols, and other plant pigments, e.g., betalains, chlorophylls (in the absence of light), and carotenoids, are compounds that are highly valued for their antioxidant properties, which give them the ability to protect the body against free radicals and thus minimize the damage caused by them. Multiple studies have sought to understand the role of these compounds in protecting against oxidative stress and inflammation, which can increase the risk of chronic diseases. This Special Issue aims to bring together the most current studies on the effect of ingesting these compounds in our diet. The issue of whether the intake of anthocyanins through appropriate dietary supplements can replace the consumption of foods containing them, achieving the same beneficial effects for the body or reinforcing their action, is a topic that deserves special attention, and is one of the more popular areas of research related to anthocyanins and their analogous phytochemical compounds. It is also important to determine the bioavailability of these compounds and what concentration is necessary to ingest to obtain the desired benefit. The difficulty of tracking the metabolic process of anthocyanins after ingestion, due to the plethora of metabolic decomposition products rapidly produced in situ, is evident. Anthocyanins are rapidly absorbed and eliminated. Species that are not absorbed in the gastrointestinal tract can be degraded and/or biotransformed by the intestinal microflora. Sensitive and selective methods for the determination of the alternative molecular structures formed would facilitate the furthering of our understanding of their bioavailability and bioactive behavior. Although there are many positive health effects attributed to these compounds, one may wonder how many studies support the validity of these effects. Given the relevance of these compounds, many scientific studies have focused on their characterization, properties, and mechanisms of action. In addition, it is important to determine which analytical methods are the most appropriate for determining these compounds and evaluating their antioxidant capacity. The oxidation process is complex and involves multiple compounds simultaneously. The study of oxidation mechanisms’ kinetics and the synergistic and antagonistic effects between the different compounds involved in oxidation are of vital importance for understanding the role that these potent antioxidants play in the treatment of different diseases. Thus, this Special Issue aims to showcase the scientific advances recently achieved in this field, and provides contrasting information regarding the questions previously raised.

Prof. Dr. Agustín G. Asuero
Dr. Noelia Tena
Dr. Julia Martín
Guest Editors

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  • anthocyanins
  • polyphenols
  • betalains
  • chlorophylls
  • carotenoids
  • antioxidant capacity
  • oxidative stress
  • bioavailability
  • intake

Published Papers (1 paper)

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18 pages, 3367 KiB  
The Role of Pigments and Cryptochrome 1 in the Adaptation of Solanum lycopersicum Photosynthetic Apparatus to High-Intensity Blue Light
by Aleksandr Ashikhmin, Pavel Pashkovskiy, Anatoliy Kosobryukhov, Alexandra Khudyakova, Anna Abramova, Mikhail Vereshchagin, Maksim Bolshakov and Vladimir Kreslavski
Antioxidants 2024, 13(5), 605; - 15 May 2024
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The effects of high-intensity blue light (HIBL, 500/1000 µmol m−2s−1, 450 nm) on Solanum lycopersicum mutants with high pigment (hp) and low pigment (lp) levels and cryptochrome 1 (cry1) deficiency on photosynthesis, chlorophylls, phenols, anthocyanins, nonenzymatic [...] Read more.
The effects of high-intensity blue light (HIBL, 500/1000 µmol m−2s−1, 450 nm) on Solanum lycopersicum mutants with high pigment (hp) and low pigment (lp) levels and cryptochrome 1 (cry1) deficiency on photosynthesis, chlorophylls, phenols, anthocyanins, nonenzymatic antioxidant activity, carotenoid composition, and the expression of light-dependent genes were investigated. The plants, grown under white light for 42 days, were exposed to HIBL for 72 h. The hp mutant quickly adapted to 500 µmol m−2s−1 HIBL, exhibiting enhanced photosynthesis, increased anthocyanin and carotenoids (beta-carotene, zeaxanthin), and increased expression of key genes involved in pigment biosynthesis (PSY1, PAL1, CHS, ANS) and PSII proteins along with an increase in nonenzymatic antioxidant activity. At 1000 µmol m−2s−1 HIBL, the lp mutant showed the highest photosynthetic activity, enhanced expression of genes associated with PSII external proteins (psbO, psbP, psbQ), and increased in neoxanthin content. This mutant demonstrated greater resistance at the higher HIBL, demonstrating increased stomatal conductance and photosynthesis rate. The cry1 mutant exhibited the highest non-photochemical quenching (NPQ) but had the lowest pigment contents and decreased photosynthetic rate and PSII activity, highlighting the critical role of CRY1 in adaptation to HIBL. The hp and lp mutants use distinct adaptation strategies, which are significantly hindered by the cry1 mutation. The pigment content appears to be crucial for adaptation at moderate HIBL doses, while CRY1 content and stomatal activity become more critical at higher doses. Full article
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