Anthocyanins

Andersen, Øyvind M.; Jordheim, Monica

doi:10.1002/9780470015902.a0001909.pub2

Cited by 47 publications

(63 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 7 compares [288] the characteristics of both synthetic and natural colourants. Interesting alternatives in food systems to synthetic colourants are acylated anthocyanins [289][290][291][292][293]. A huge variety of hues can be achieved as a function of anthocyanin structure and pH of food matrix.…”

Section: Flavonoids -From Biosynthesis To Human Healthmentioning

confidence: 99%

See 1 more Smart Citation

Antioxidant Capacity of Anthocyanin Pigments

Martín¹,

Kuskoski²,

Navas³

et al. 2017

Flavonoids - From Biosynthesis to Human Health

View full text Add to dashboard Cite

Anthocyanins are a family of natural pigments classified into the group of flavonoids, considered to be responsible for the color and taste of many fruits and vegetables, i.e. berries. Anthocyanins are common components of the human diet. Besides their interest as colorant because of their coloring properties, the study of anthocyanin compounds stems from their wide applicability in the prevention and even in the treatment of various human diseases. However, various aspects of the pharmacological roles of anthocyanins remain in the dark, having still several obstacles to the development of robust diets or prescribing lines on consumption of anthocyanins. The chemical structure of anthocyanins determines in large measure its capacity and efficacy as an antioxidant agent. In this study, the following aspects are reviewed: the antioxidant effect of anthocyanin pigments; the oxidative stress, the bioavailability after intake and biological aspects of anthocyanins, the method for measuring the antioxidant activity of anthocyanins, the relationship between structure and activity; and the influence of the anthocyanins in the antioxidant activity of wines. Finally an overview of some potential uses in food industry is attempted mainly focusing in the anthocyanin encapsulation topic. Attention has been paid to the more recent publications in the field.

show abstract

Section: Flavonoids -From Biosynthesis To Human Healthmentioning

confidence: 99%

“…Anthocyanins [13,14,17,293,[343][344][345][346] are members of the flavonoid group of phytochemicals, a group predominant in fruits and vegetables, especially in berries. Recent research raised awareness of the importance [347,348] of anthocyanins in the diet.…”

Section: Final Commentsmentioning

confidence: 99%

Antioxidant Capacity of Anthocyanin Pigments

Martín¹,

Kuskoski²,

Navas³

et al. 2017

Flavonoids - From Biosynthesis to Human Health

View full text Add to dashboard Cite

show abstract

“…As such, the response of these dyes to light absorption is solvent and pH sensitive [34]. Indeed, anthocyanin molecules tend to show a red flavylium form in acidic medium and purple deprotonated quinonodial form as the solution pH increases [21,34,59,60].…”

Section: Characterisation Of Natural Dyesmentioning

confidence: 99%

“…Indeed, anthocyanin molecules tend to show a red flavylium form in acidic medium and purple deprotonated quinonodial form as the solution pH increases [21,34,59,60]. forward and reverse scans indicate that they are diffusion controlled, and hence the electrode process is rapid and reversible [63,64].…”

Section: Characterisation Of Natural Dyesmentioning

confidence: 99%

“…Anthocyanin molecules (water-soluble vacuolar pigments [34]) are found in tissues of higher plants (i.e. land plants that have lignified tissues or xylems for transporting water and minerals throughout the plant), and are responsible for their red-blue range of pigments, depending on pH [21,25,26,[32][33][34][35][36]. Anthocyanin molecules contain carbonyl and hydroxyl groups, which can adsorb on to the surface of porous TiO 2 films, leading to photoelectron transfer from the anthocyanin molecule to the conduction band of TiO 2 [21].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Inkjet-printed graphene electrodes for dye-sensitized solar cells

Dodoo‐Arhin

Howe

et al. 2016

Carbon

View full text Add to dashboard Cite

We present a stable inkjet printable graphene ink, formulated in isopropyl alcohol via liquid phase exfoliation of chemically pristine graphite with a polymer stabilizer. The rheology and low deposition temperature of the ink allow uniform printing. We use the graphene ink to fabricate counter electrodes (CE) for natural and ruthenium-based dye-sensitized solar cells (DSSCs). The repeatability of the printing process for the CEs is demonstrated through an array of inkjet-printed graphene electrodes, with ~5% standard deviation in the sheet resistance. As photosensitizers, we investigate natural tropical dye extracts from Pennisetum glaucum, Hibiscus sabdariffa and Caesalpinia pulcherrima. Among the three natural dyes, we find extracts from C. pulcherrima exhibits the best performance, with ~0.9% conversion efficiency using a printed graphene counter electrode and a comparable ~1.1% efficiency using a platinum (Pt) CE. When used with N719 dye, the inkjet-printed graphene CE shows a ~3.0% conversion efficiency, compared to ~4.4% obtained using Pt CEs. Our results show that inkjet printable graphene ink, without any chemical functionalization, offers a flexible and scalable fabrication route, with a material cost of only ~2.7% of the equivalent solution processed Pt-based electrode.

show abstract

A Review of the Chemistry and Biological Activities of Natural Colorants, Dyes, and Pigments: Challenges, and Opportunities for Food, Cosmetics, and Pharmaceutical Application

Pasdaran

Zare

Hamedi

et al. 2023

Chemistry & Biodiversity

View full text Add to dashboard Cite

Natural pigments are important sources for the screening of bioactive lead compounds. This article reviewed the chemistry and therapeutic potentials of over 570 colored molecules from plants, fungi, bacteria, insects, algae, and marine sources. Moreover, related biological activities, advanced extraction, and identification approaches were reviewed. A variety of biological activities, including cytotoxicity against cancer cells, antioxidant, anti‐inflammatory, wound healing, anti‐microbial, antiviral, and anti‐protozoal activities, have been reported for different pigments. Considering their structural backbone, they were classified as naphthoquinones, carotenoids, flavonoids, xanthones, anthocyanins, benzotropolones, alkaloids, terpenoids, isoprenoids, and non‐isoprenoids. Alkaloid pigments were mostly isolated from bacteria and marine sources, while flavonoids were mostly found in plants and mushrooms. Colored quinones and xanthones were mostly extracted from plants and fungi, while colored polyketides and terpenoids are often found in marine sources and fungi. Carotenoids are mostly distributed among bacteria, followed by fungi and plants. The pigments isolated from insects have different structures, but among them, carotenoids and quinone/xanthone are the most important. Considering good manufacturing practices, the current permitted natural colorants are: Carotenoids (canthaxanthin, β‐carotene, β‐apo‐8′‐carotenal, annatto, astaxanthin) and their sources, lycopene, anthocyanins, betanin, chlorophyllins, spirulina extract, carmine and cochineal extract, henna, riboflavin, pyrogallol, logwood extract, guaiazulene, turmeric, and soy leghemoglobin.

show abstract

Anthocyanins

Cited by 47 publications

References 6 publications

Antioxidant Capacity of Anthocyanin Pigments

Antioxidant Capacity of Anthocyanin Pigments

Inkjet-printed graphene electrodes for dye-sensitized solar cells

A Review of the Chemistry and Biological Activities of Natural Colorants, Dyes, and Pigments: Challenges, and Opportunities for Food, Cosmetics, and Pharmaceutical Application

Contact Info

Product

Resources

About