Blackberry, ellagic acid

Ellagic acid has been reported to be present in berries, particularly raspberries (Rubus idaeus), strawberries, and blackberries [Amakura et al., 2000]. However, free ellagic acid is normally present in low levels in berries that more commonly contain ellagitannins, such as sanguiin H-6 and lambertianin C, which release ellagic and gallic acid when treated with acid (Fig. 1.26) [Mullen et al., 2002],... 

Wang, S.Y., Maas, J.L., Daniel, E.M., and Galletta, G. J. 1990. Improved HPLC resolution and quantification of ellagic acid from strawberry, blackberry and cranberry. Hort. Sci. 25 1078. 

Ellagic acid and ellagitannins Blackberries, raspberries, strawberries, walnuts, pomegranates Antiproliferative, antioxidant... 

Ellagic acid Strawberry, raspberry, blackberry SWV GCE and paraffin-impregnated graphite rod Acid hydrolysis 0.1 M KNO3, pH 2 5x10-7-8x10- M, DL 1.35x10-7 M [50]... 

Komorsky-Lovric, S. and Novak, I. (2011) Determination of ellagic acid in strawberries, raspberries and blackberries by square-wave voltammetry. Int. J. Electrochem. Set, 6,4638-4647. 

The hydroxybenzoic acids that are found in various fruits and occur mostly as esters include salicylic acid (2-hydroxybenzoic acid), 4-hydroxybenzoic acid, gentisic acid (2,4-di-hydroxybenzoic acid), protocatechuic acid (3,4-dihydroxybenzoic acid), gallic acid (3,4,5-trihydroxybenzoic acid), vanillic acid (3-methoxy-4-hydroxybenzoic acid) and ellagic acid (IX, Formula 18.13), the dilactone of hexahydroxydiphenic acid (Table 18.19). Table 18.19 shows the most important sources of 4-hydroxybenzoic acid, protocatechuic acid and gallic acid. Strawberries (0.2-0.5), raspberries (1.2) and blackberries (1.9-2.0) contain higher concentrations of free and bound ellagic acid (g/kg). 

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