Antioxidant activity and physico-chemical properties of Tunisian grown pomegranate (Punica granatum L.) cultivars

2012 ◽  
Vol 40 ◽  
pp. 81-89 ◽  
Author(s):  
Faten Zaouay ◽  
Pedro Mena ◽  
Cristina Garcia-Viguera ◽  
Messaoud Mars
Keyword(s):  
Antioxidant Activity ◽  
Chemical Properties ◽  
Punica Granatum ◽  
Physico Chemical ◽  
Punica Granatum L

Investigation of physico-chemical properties and antioxidant activity of twenty Iranian pomegranate (Punica granatum L.) cultivars

2010 ◽  
Vol 126 (2) ◽  
pp. 180-185 ◽  
Author(s):  
Ali Tehranifar ◽  
Mehdi Zarei ◽  
Zahra Nemati ◽  
Behnam Esfandiyari ◽  
Mohamad Reza Vazifeshenas
Keyword(s):  
Antioxidant Activity ◽  
Chemical Properties ◽  
Punica Granatum ◽  
Physico Chemical ◽  
Punica Granatum L

scholarly journals Pomological traits, phenol and flavonoid content and antioxidant activity introduced the pomegranate (Punica granatum L.) cultivars grown in the Mediterranean part of Croatia

2018 ◽  
Vol 21 (3-4) ◽  
pp. 171-180
Author(s):  
Mira Radunić ◽  
Ela Šimera ◽  
Katarina Lozo ◽  
Jelena Gadže ◽  
Maja Jukić Špika
Keyword(s):  
Antioxidant Activity ◽  
Chemical Properties ◽  
Punica Granatum ◽  
Fruit Weight ◽  
Flavonoid Content ◽  
Juice Yield ◽  
Fruit Samples ◽  
Soluble Solid ◽  
Punica Granatum L

Fruit samples of ‘Granada’, ‘Wonderful’ and ‘Hicaznar’ cultivars were collected in productive pomegranate orchard in Neretva valley, Metković (Croatia) and their pomological and chemical properties were compared. Significant differences among cultivars were noted between the studied traits. Fruit weight ranged from 429.37 g to 359.43 g and the lowest was recorded in cv. ‘Hicaznar’. Color of peel, aril and juice of all investigated cultivars was intensively red and dark red, respectively. ‘Granada’ and ‘Wonderful’ stood out with high juice yield compared with ‘Hicaznar’. Total soluble solid (TSS) of ‘Hicaznar’ (18.61%) was higher than that of ‘Wonderful’ (16.64%). Total acidity (TA) significantly differed among cultivars and ranged from 1.6% to 2.1%. According to the TSS/TA ratio investigated cultivars belong to the group of sour-sweet cultivars. Dissimilarity between cultivars was found in the phenolics content (TPC). It ranged from 679.6 to 906.6 mg/100 g D.W. where ‘Hicaznar’ stood out as a cultivar with highest TPC and also highest flavonoid and non-flavonoid content (521.1 mg/100 g D.W. and 385.5 mg/100 g D.W., respectively). In ‘Granada’ antioxidant activity measured by 1,1-diphenyl-2-picrylhydrazyl was recorded for 64.1%, in ‘Wonderful’ 70.2% and the highest in ‘Hicaznar’ (74.5%). Results of this assessment are the basis for practical determination of the pomegranate use.

PHYTOCHEMICAL CONSTITUENTS, ANTIOXIDANT ACTIVITY AND ACUTE ORAL TOXICITY OF POMEGRANATE (PUNICA GRANATUM L.) FRUIT PEEL EXTRACT

2019 ◽  
pp. 7-14
Author(s):  
Hai Trieu Ly ◽  
Tuan Anh Vo ◽  
Viet Hong Phong Nguyen ◽  
Thi My Sa Pham ◽  
Bich Thao Lam ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Gallic Acid ◽  
Radical Scavenging ◽  
Dry Weight ◽  
Punica Granatum ◽  
Acute Oral Toxicity ◽  
Oral Toxicity ◽  
Fruit Peel ◽  
Total Polyphenol ◽  
Punica Granatum L

Background: The natural antioxidants have an important role in the prevention of many diseases. The aim of study is to investigate phytochemical components, antioxidant activity and acute oral toxicity of Pomegranate (Punica granatum L.) fruit peel (PFP) extract. Materials and methods: Phytochemicals of PFP were determined by qualitative chemical tests, thin layer chromatography, total polyphenol and flavonoid contents. The PFP extract was evaluated for antioxidant activity by DPPH assay and MDA assay. In vivo acute oral toxicity test was conducted using Karber-Behrens method to determine LD50. Results: Results illustrated that PFP mainly contains flavonoids, alkaloids, tannins, triterpenes, saponins, and coumarins. PFP extract exhibited the total polyphenol and flavonoid contents with 189.97 mg gallic acid equivalent/g dry weight and 9.42 mg quercetin equivalent/g dry weight, respectively. The DPPH free radical scavenging and anti-lipid peroxidation activities of PFP extract were expressed with IC50 value of 4.80 μg/mL and 0.38 μg/ mL, sequentially. Simultaneously, the Dmax (the maximum dose administered to mice that no toxicity was observed) of PFP extract was determined to be 21.28 g/kg, equivalent to 35.64 g dried herb. Conclusion: The PFP extract is relatively safe and revealed high antioxidant activity. Key words: Punica granatum L.; polyphenols; flavonoids; gallic acid; quercetin; antioxidant activity; acute oral toxicity

Astaxanthin–garlic oil nanoemulsions preparation using spontaneous microemulsification technique: optimization and their physico–chemical properties

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Seyedalireza Mortazavi Tabrizi ◽  
Afshin Javadi ◽  
Navideh Anarjan ◽  
Seyyed Javid Mortazavi Tabrizi ◽  
Hamid Mirzaei
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Subcritical Water ◽  
Chemical Properties ◽  
Polydispersity Index ◽  
Garlic Oil ◽  
Physico Chemical ◽  
Minimum Particle Size ◽  
Oil In Water ◽  
Technique Optimization

AbstractGarlic oil in water nanoemulsion was resulted through subcritical water method (temperature of 120 °C and pressure of 1.5 bar, for 2 h), using aponin, as emulsifier. Based on the prepared garlic oil nanoemulsion, astaxanthin–garlic oil nanoemulsions were prepared using spontaneous microemulsification technique. Response surface methodology was employed to evaluate the effects of independent variables namely, amount of garlic oil nanoemulsion (1–9 mL) and amount of provided astaxanthin powder (1–9 g) on particle size and polydispersity index (PDI) of the resulted nanoemulsions. Results of optimization indicated that well dispersed and spherical nanodroplets were formed in the nanoemulsions with minimum particle size (76 nm) and polydispersity index (PDI, 0.358) and maximum zeta potential value (−8.01 mV), using garlic oil nanoemulsion amount of 8.27 mL and 4.15 g of astaxanthin powder. Strong antioxidant activity (>100%) of the prepared astaxanthin–garlic oil nanoemulsion, using obtained optimum amounts of the components, could be related to the highest antioxidant activity of the colloidal astaxanthin (>100%) as compared to that of the garlic oil nanoemulsion (16.4%). However, higher bactericidal activity of the resulted nanoemulsion against Escherichia coli and Staphylococcus aureus, were related to the main sulfur bioactive components of the garlic oil in which their main functional groups were detected by Fourier transform-infrared spectroscopy.

scholarly journals Effect of packaging on phenols, flavonoids and antioxidant characteristics of mechanical cabinet dried wild pomegranate (Punica granatum L.) arils

2021 ◽  
Vol 13 (1) ◽  
pp. 101-109
Author(s):  
Abhimanyu Thakur ◽  
NS Thakur ◽  
Hamid ◽  
Sunakshi Gautam
Keyword(s):  
Antioxidant Activity ◽  
Reducing Power ◽  
Punica Granatum ◽  
Total Phenols ◽  
Antioxidant Power ◽  
Chelating Activity ◽  
Metal Chelating ◽  
Temperature Conditions ◽  
Metal Chelating Activity ◽  
Punica Granatum L

Wild pomegranate (Punica granatum L.) fruit arils with high acid content are processed into dried arils (anardana) which is used as an ingredient in various medicinal formulations and culinary preparations. The various phenols and flavonoids are responsible for the antioxidant activity of anardana which signifies its functional benefits. The advanced packaging techniques like vacuum packaging, can retain higher antioxidant activity characteristics during storage. So, the present studies were carried out to compare the effect of packaging on total phenols, flavonoids, DPPH (2, 2-diphenyl-1-picrylhydrazyl) antioxidant activity, metal chelating activity, FRAP (ferric reducing antioxidant power) and reducing power of anardana prepared in mechanical cabinet drier. Anardana was packed in different packaging materials and stored under ambient and refrigerated temperature conditions. The overall effect of storage during 12 months revealed that there was a significant (p< 0.05) decrease in total phenols (180.95 to 161.76 mg GAE/100 g), flavonoids (40.60 to 32.66 mg QuE/100 g), DPPH antioxidant activity (61.23 to 56.13%), metal chelating activity (22.25 to 19.37%), FRAP (34.60 to 31.73 ?M Fe2+/100 g) and reducing power (0.610 to 0.521) which was observed less in anardana packed in ALPV (aluminium laminated pouches with vacuum) followed by ALP (aluminium laminated pouches) and gunny bags. Due to slower rates of degradation of various antioxidant compounds, the changes after 12 months of storage were lower under refrigerated conditions. The total phenols, flavonoids and DPPH antioxidant activity were reduced  from 180.95 to 167.24 and 156.28 mg GAE/100 g, 40.60 to 34.95 and 30.37 mg QuE/100 g and 61.23 to 57.99 and 54.27 % in refrigerated and ambient temperature conditions, respectively.

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