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Antioxidants
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Antioxidant Capacity of Anthocyanins and Other Vegetal Pigments: Properties, Intake...
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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: 15 March 2025 | Viewed by 2959

Special Issue Editors

Prof. Dr. Agustín G. Asuero

E-Mail Website
Guest Editor
Department of Analytical Chemistry, University of Seville, 41012 Sevilla, Spain
Interests: natural antioxidants; chemometrics; solution chemistry
Special Issues, Collections and Topics in MDPI journals
Dr. Noelia Tena

E-Mail Website
Guest Editor
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
Dr. Julia Martín

E-Mail Website
Guest Editor
Departamento de Química Analítica, Universidad de Sevilla, E-41011 Sevilla, 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

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Antioxidants is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

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

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Published Papers (3 papers)

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Research

12 pages, 982 KiB  
Article
3′-Caffeoylquercetin Glycosides and 4′-Caffeoylkaempferol Glycosides—Novel Antioxidant Flavonoids Discovered in the Freesia Yellow Flowers
by Kazutoshi Shindo, Nozomi Iwamoto, Mayu Usami, Ayuna Saito, Miho Sato, Maho Sugaya, Nao Miyashita, Minoru Murahama, Yasuki Higashimura, Miho Takemura, Kazuo Furihata and Norihiko Misawa
Antioxidants 2025, 14(2), 158; https://doi.org/10.3390/antiox14020158 - 28 Jan 2025
Viewed by 342
Abstract
The petals of flowering plants should retain unique antioxidants that have not been found in the fruits, as the petals need to stay open to attract pollinators against photooxidation and devise a solution to avoid eating attacks. We reported that the yellow petals [...] Read more.
The petals of flowering plants should retain unique antioxidants that have not been found in the fruits, as the petals need to stay open to attract pollinators against photooxidation and devise a solution to avoid eating attacks. We reported that the yellow petals of freesia cultivars (Freesia x hybrida) accumulated original apocarotenoids, mono- and di-neapolitanosyl crocetin. Here, in the yellow petals, we discovered eight novel flavonoids by their structural determination, including four 3′-caffeoylquercetin 3,7-glycosides, one 3′-caffeoylquercetin 3-glycoside, and three 4′-caffeoylkaempferol 3,7-glycosides. The 3-carbon sugar part was a minor hexose dimer [D-glucosyl-D-glucoside or D-glucosyl-L-rhamnoside] with the β1,2-linkage, while the 7-carbon was usually O-glycosylated with D-glucose, L-rhamnose, or D-glucuronic acid. Such caffeoyl-flavonol glycosides were also present in freesia white petals, regardless of the cultivars and wild species. When dihydroflavonols, the last common precursors between flavonols and anthocyanins, switch to the flavonol route, these caffeoyl-flavonol glycosides are likely to be synthesized via quercetin or kaempferol. All the eight flavonoids exerted in vitro antioxidant activities against both lipid peroxidation and radical generation. Specifically, 3′-caffeoylquercetin 3-sophoroside and its 7-glucuronide showed superior antioxidant activity. Freesia yellow and white flowers have been utilized as edible flowers, indicating the importance of evaluating the human benefits and risks of newly identified flavonoids. Full article
(This article belongs to the Special Issue Antioxidant Capacity of Anthocyanins and Other Vegetal Pigments: Properties, Intake and Health Benefits)
16 pages, 2102 KiB  
Article
Administration of Delphinidin to Improve Survival and Neurological Outcome in Mice After Cardiac Arrest and Resuscitation
by Rika Bajorat, Stella Line Grest, Stefan Bergt, Felix Klawitter, Brigitte Vollmar, Daniel A. Reuter and Jörn Bajorat
Antioxidants 2024, 13(12), 1469; https://doi.org/10.3390/antiox13121469 - 29 Nov 2024
Viewed by 685
Abstract
Reactive oxygen species (ROS) play an important role in ischemia–reperfusion (I/R) after cardiac arrest and cardiopulmonary resuscitation (CA-CPR). Early administration of vitamin C at a high dose in experimental models resulted in less myocardial damage and had a positive effect on survival after [...] Read more.
Reactive oxygen species (ROS) play an important role in ischemia–reperfusion (I/R) after cardiac arrest and cardiopulmonary resuscitation (CA-CPR). Early administration of vitamin C at a high dose in experimental models resulted in less myocardial damage and had a positive effect on survival after resuscitation. Here, we postulated that the ROS scavenging activity of an anthocyanin (i.e., delphinidin) would positively influence resuscitation outcomes. We hypothesized that administration of delphinidin immediately after CA-CPR could attenuate systemic inflammation in a standardized mouse model and thereby improve survival and long-term outcomes. Outcomes up to 28 days were evaluated in a control group (saline-treated) and a delphinidin-treated cohort. Survival, neurological and cognitive parameters were assessed. Post-CPR infusion of delphinidin deteriorated survival time after a 10 min CA. Survivors amongst the controls showed significantly more anxious behavior than in the pre-CPR phases. This tendency was also observed in the animals treated with delphinidin. In our study, we did not find an improvement in survival with delphinidin after CA-CPR and observed no effect on learning behavior. Our long-term behavioral tests clearly show that CA-CPR is associated with the development of post-interventional anxiety-like symptoms. Our findings open up scopes to investigate the intrinsic factors (e.g., oxidative stress, inflammatory and systemic-microbial response, etc.) influencing the therapeutic efficacy of anthocyanins in vivo. Full article
(This article belongs to the Special Issue Antioxidant Capacity of Anthocyanins and Other Vegetal Pigments: Properties, Intake and Health Benefits)
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18 pages, 3367 KiB  
Article
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; https://doi.org/10.3390/antiox13050605 - 15 May 2024
Cited by 2 | Viewed by 1297
Abstract
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
(This article belongs to the Special Issue Antioxidant Capacity of Anthocyanins and Other Vegetal Pigments: Properties, Intake and Health Benefits)
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