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Physicochemical characterization of oil, antioxidant potential, and phenolic profile of seeds isolated from Tunisian pomegranate (Punica granatum L.) cultivars
- Source :
- Journal of food scienceREFERENCES. 86(3)
- Publication Year :
- 2020
-
Abstract
- Pomegranate (Punica granatum L.) seeds oils (PSO) from three Tunisian varieties namely Jebali, Testouri, and Gabsi were extracted by ultrasonic-assisted extraction and analyzed for their physicochemical properties, fatty acids (FA) profile, and sterol composition. PSO of Gabsi and Testouri showed the best quality indexes in terms of peroxide and acid values and the highest oxidative stability index was observed for PSO of Gabsi ecotype (2.534 hr). Polyphenol content of PSO of Gabsi ecotype (886.909 mg/kg) was roughly 3 and 23 times higher than that of Jebali and Testouri ecotypes, respectively. Twelve FAs were identified by GC/FID. Punicic acid was the major compounds ranged from 81.53% (Testouri) to 86.41% (Gabsi). The unsaturated/saturated FA ratios of PSO were 14.53, 15.95, and 18.68, respectively for Gabsi, Testouri, and Jebali, respectively. Phytosterols were also identified and β-sitosterol was the major compound in PSO. In addition, the phytochemical and antioxidant properties of phenolic extracts obtained from pomegranate seeds residues were investigated. Pomegranate seeds extract (PSE) of Gabsi cultivar showed the highest content of polyphenols (64.762 mg CAE/g) and flavonoids (7.127 mg RE/g). Antioxidant potential of extracts was performed using DPPH test and total antioxidant capacity (TAC). Results revealed that Gabsi cultivar was the most reactive extract with EC50 of 0.105 mg/mL for DPPH test and 40.622 mg AA/g for TAC. Phenolic profiles of PSE were also investigated. Results showed the importance of cultivar selection in the potential use of bioactive compounds of seeds as nutraceutical ingredients in food and chemical industries. PRACTICAL APPLICATION: Three Tunisian pomegranate cultivars namely Jebali, Testouri, and Gabsi were investigated for their seeds oil and phenolic composition. Pomegranate seeds oil (PSO) are rich in bioactive polyunsaturated fatty acids and phytosterols that can be of interest in several food and chemical industrial applications. Moreover, pomegranate seeds extracts are a natural source of antioxidant components, such as phenolic compounds, that can be used by the pharmaceutical industry as promising nutraceutical ingredients. The obtained results can be used to provide guidance on cultivar selection during industrial applications.
- Subjects :
- Antioxidant
Tunisia
Chemical Phenomena
Linolenic Acids
030309 nutrition & dietetics
DPPH
Food Handling
medicine.medical_treatment
Phytochemicals
Antioxidants
Pomegranate
03 medical and health sciences
chemistry.chemical_compound
0404 agricultural biotechnology
Nutraceutical
Phenols
medicine
Plant Oils
Cultivar
Food science
Flavonoids
0303 health sciences
Punicic acid
biology
Plant Extracts
Fatty Acids
Phytosterols
Polyphenols
04 agricultural and veterinary sciences
biology.organism_classification
040401 food science
chemistry
Phytochemical
Polyphenol
Punica
Dietary Supplements
Seeds
Food Science
Subjects
Details
- ISSN :
- 17503841
- Volume :
- 86
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Journal of food scienceREFERENCES
- Accession number :
- edsair.doi.dedup.....8fdbdf44469e3bca9f35f587a2e096b3