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Potential of Carob Pulp Powder: Influence of Cultivar on Nutritional Composition, Antioxidant Activity, and
Carme Garau1, Mónica Umaña2, Miquel Llompart1
1Institute for Agri-Food and Fishing Research and Training of the Balearic Island, c/Eusebi Estada, 145, 07009 Palma de Majorca, Spain.
Abstract:
Carob pulp powder (CPP), a by-product of Ceratonia siliqua L., is rich in bioactive compounds with potential for functional foods. This study evaluated how genetic variability among cultivars affects the nutritional composition and functional quality of CPP. Nineteen cultivars from Majorca (13), Ibiza (4), and two open-flowering selections were grown under identical conditions in Majorca, Spain. CPP samples showed high dietary fibre (22.6-47.4 g/100 g dry matter), total sugars (22.5-62.5 g/100 g dm), and antioxidant activity (11.1-78.4 µmol TE/g dm, CUPRAC method). Significant differences among cultivars were observed in protein and fructose content, fatty acid profiles, antioxidant activity, colour, acidity, and functional properties like water- and oil-holding capacities. Principal component analysis distinguished the Ibiza cultivars by higher soluble solids, fructose, and stearic acid content but lower antioxidant activity. Open-flowering selections exhibited the highest antioxidant and water retention capacities. These results confirm that genetic origin strongly influences CPP's nutritional and functional traits, endorsing its use as a natural, health-promoting ingredient for functional food development.
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