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Organoleptic Quality, Minerals, Proteins and Amino Acids from Two Tunisian Commercial Pomegranate Fruits
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Walid Elfalleh
Published/Copyright:
August 5, 2011
Chemicals from fresh pomegranates were established. Total sugar of juice extracts are mainly fructose (ca. 7.27 g/100 ml) and glucose (ca. 8.11 g/100 ml). Pulp minerals, expressed as mg/100g are potassium (351.26), magnesium (10.02), calcium (9.26), sodium (7.25), iron (0.15), Zinc (0.10), copper (0.08) and manganese (0.04). Juice proteins are about 7.95 g/l and dry pulp proteins are 24% on a dry-weight basis DW (Kjeldhal assays). Seed proteins are ca. 16.87% DW. Globulins (62.4 mg/g DW) and albumins (54.12 mg/g DW) are the major storage protein fractions, followed by glutelins (33.2 mg/g DW) and prolamins (18.08 mg/g DW). Seed total amino acid content is 14.45 g/100 g DW. Seeds are rich in Glu, Arg, Asp, Leu and Gly amino acids. Essential amino acids average 33.54% of total amino acid. Essential amino acids are mostly all much higher than the requirement of FAO/WHO for adults (but none for preschool children). Most other amino acids have content slightly fewer. All of these findings implied that the content of sugar, mineral and protein maybe included in pomegranate as supplements for commonly diets.
Keywords: Punica granatum; pomegranate components; protein fractionation; albumins; globulins; amino acids
Published Online: 2011-8-5
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Keywords for this article
Punica granatum;
pomegranate components;
protein fractionation;
albumins;
globulins;
amino acids
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