Pigments from anthocyanins

Hayasaka, Y. and Asenstorfer, R.E., Screening for potential pigments derived from anthocyanins in red wine using nanoelectrospray tandem mass spectrometry, J. Agric. Food Chem., 50, 756, 2002. 

Fernando and Senadeera [40] used different natural pigments incorporating anthocyanins that were extracted from various tropical flowers. The extract was acidified to p H < 1, assuming a deeper coloration, and was used for the preparation of the photovoltaic apparatus. The generation at pH <1 of the oxonium ion allows the wide conjugation of the Jt-electron density throughout the aglycone portion of the... 

T. Shoji, A. Yanagida and T. Kanda, Gel permeation chromatography of anthocyanin pigments from rose cider and red wine. J. Agr. Food Chem. 47 (1999) 2885-2890. 

Ueda. Storage stability and thermal HV082 stability of hordeumin, an anthocyanin pigment from barley. Biosci Biotech Biochem 1995 59(4) 746—748. 

Bloor, S.J. and Falshaw, R., Covalently linked anthocyanin-flavonol pigments from blue Agapan-thus flowers. Phytochemistry, 53, 575, 2000. 

The occurrence of the diester structures of the malonic acid moiety in natural anthocyanin pigments has so far been reported in pigments from flowers of Eichhornia crassipes and chive. Allium schoenoprasum, where the anthocyanin-flavone and anthocyanin-flavonol disubstituted malonate structures were exhibited, respectively (Figure 10.8 and Figure 10.9). In some anthocyanins from flowers of Anemone coronaria, malonic acid is esterified with galactose in one end and tartaryl in the other end. ... 

Cyanidin 3-O-b-D-glucoside (C3G) of a typical anthocyanin pigment could lower the serum thiobarbituric acid-reactive substance concentration and increase the oxidation resistance of the serum to lipid peroxidation in rats [52]. In vitro enzymatic and non-enzymatic polyunsaturated fatty acid per oxidation was significantly inhibited in a dose-dependent manner by anthocyanin [53], a deep-red color pigment from carrot cell cultures. 

The power of superfruits exists mainly in their established natural nutrients but also is exhibited in other natural compounds, called phytochemicals. Among nature s astounding variety, phytochemicals comprise thousands of different compounds, including the pigments that give fruits their bright colors. Think of the wonderful red luster of a fresh strawberry that crimson color comes from phytochemical pigments called anthocyanins, which hold potential value for health. 

Why emphasize red grape as a superfruit Only red, rather than white or green, is included because its skin color derives from additional phytochemical pigments, mostly anthocyanins, some of which have promise as health agents. Standing tall among these red grape phytochemicals is... 

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