Pomegranate - Tropical and Subtropical Fruits: Postharvest Physiology, Processing and Packaging - page 524

Table 27.3. Organic acids concentration of pomegranate juice.

Organic Acid Conc. (mg/100 g) Reference

Ascorbic acid 0.36-8.78 Aarabi et al. (2008)

Acetic acid 0.81-43.60 Aarabi et al. (2008)

Citric acid 4.30-3763.60 Poyrazoglu et al. (2002); Aarabi et al. (2008)

Fumaric acid 0.24-15.39 Aarabi et al. (2008)

Maleic acid 0.08-19.20 Aarabi et al. (2008)

Malic acid 2.30-366.30 Mirdehghan et al. (2006); Aarabi et al. (2008)

Oxalic acid 0.20-55.10 Poyrazoglu et al. (2002); Aarabi et al. (2008)

Pyruvic acid 1.90-2.50 Miguel et al. (2006)

Shikimik acid 0.38-47.40 Aarabi et al. (2008)

Succinic acid 1.50-134.40 Poyrazoglu et al. (2002); Aarabi et al. (2008)

Tartaric acid 4.20-180.00 Poyrazoglu et al. (2002); Miguel et al. (2006)

( − )- Quinic acid 0.50-8.20 Poyrazoglu et al. (2002)

common anthocyanins in pomegranate juice are delphini-
din 3-glucosides, delphinidin 3-5-glucosides, cyanidin
3-glucosides, cyanidin 3-5-glucosides, pelargonidin 3-
glucosides, pelargonidin 3-5-glucosides, and cyanidin
3-arabinose, with varying values. Anthocyanins concentra-
tion has been reported to increase during cold storage (Gil
et al., 1995) but not in CA storage (Holcroft et al., 1998).
Vitamin C content of pomegranate juice is about 885.80
μmol/liter (Nanda et al., 2001).

Phenolic compounds
Pomegranate rind possesses high amounts of phenolic
compounds in the form of catechin, quercentin, and
kaempferol, as shown in Table 27.5. Catechin is also found
in pomegranate seed (Park et al., 2010). Total phenolic com-
pounds of pomegranate juice range from 22.50 to 407.78
mg/100 ml (Drogoudi et al., 2005; Ozgen et al., 2008).
The phenolic compounds quantified in pomegranate juice
are gallic acid, protocatechuic acid, catechin, cholorgenic

Table 27.4. Antioxidant capacity and anthocyanin levels of pomegranate juice.

Parameters Value Reference

Antioxidant capacity as:
TEAC (mmol/TE 1 /liter)

4.38-7.70 Ozgen et al. (2008)

FRAP (mmol/TE 1 /liter)

4.63-11.60 Ozgen et al. (2008); Weerakkody et al. (2010)

Vitamin C eqv. (mg/100 ml) 1.3-31.60 Drogoudi et al. (2005); Borochov-Neori et al. (2009)

% Inhibition 55.05-69 Kulkarni and Aradhya (2005); D'Aquino et al. (2010)

Vitamin C ( μ mol/liter) 885.80 Nanda et al. (2001)

Total monomeric anthocyanins, as
cyanidin-3 glucosides (mg/100 g)

0.60-21.90 Ozgen et al. (2008)

Total anthocyanins, as cyanidin
3-5-glucosides (mg/100 g)

33.80-125.50 D'Aquino et al. (2010); Kulkarni and Aradhya (2005)

Delphinidin 3-glucosides 0.05-5.70 Artes et al. (2000); D'Aquino et al. (2010)

Delphinidin 3-5-glucosides 0.13-5.01 Artes et al. (2000); D'Aquino et al. (2010)

Artes et al. (2000); D'Aquino et al. (2010)

Cyanidin 3-glucosides 0.31-13.83

Artes et al. (2000); D'Aquino et al. (2010) Cyanidin 3-5-glucosides 0.41-7.53

Pelargonidin 3-glucosides 0.04-2.11 Artes et al. (2000); D'Aquino et al. (2010)

Pelargonidin 3-5-glucosides 0.02-0.65 Artes et al. (1998, 2000)

Cyanidin 3-arabinose 0.33 D'Aquino et al. (2010)

1 Trolox equivalent