scholarly journals Physico-chemical characterisation and antioxidant activity of some Opuntia ficus-indica varieties grown in North Algeria

2013 ◽  
Vol 12 (3) ◽  
pp. 299-307 ◽  
Author(s):  
Nadia Chougui ◽  
Hayette Louaileche ◽  
Safia Mohedeb ◽  
Yasmina Mouloudj ◽  
Yasmina Hammoui ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Opuntia Ficus Indica ◽  
Physico Chemical ◽  
North Algeria

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.

Opuntia ficus indica fruit gum: Extraction, characterization, antioxidant activity and functional properties

2019 ◽  
Vol 206 ◽  
pp. 565-572 ◽  
Author(s):  
Elnaz Salehi ◽  
Zahra Emam-Djomeh ◽  
Gholamreza Askari ◽  
Morteza Fathi
Keyword(s):  
Antioxidant Activity ◽  
Functional Properties ◽  
Opuntia Ficus Indica

scholarly journals Physico-Chemical Indices, Iso-alpha-Acid, Phenolic Contents and Antioxidant Activity of Commercial Beers

2013 ◽  
Vol 2 (4) ◽  
pp. 107 ◽  
Author(s):  
Antonietta Baiano ◽  
Carmela Terracone
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Content ◽  
Principal Component ◽  
Titratable Acidity ◽  
Great Variability ◽  
Total Phenolic ◽  
Gluten Free ◽  
Phenolic Contents ◽  
Physico Chemical ◽  
Phenolic Concentration

<p>The effects of brewing style on physicochemical indices, iso-a-acids and antioxidant contents of commercial beers were investigated. A great variability was highlighted for all the considered parameters (sugar and alcohol contents, density, pH, titratable acidity, iso-a-acids, phenolic content, antioxidant activity). The beers having the highest iso-a-acids contents were Guinness Special Export Stout (which also showed the highest phenolic content), Chimay Pères Trappistes Triple, and Greene King IPA whereas the lowest values were detected in Cuveè De Ranke, Heineken Premium Quality Lager, and Riedenburger Brauhaus gluten free. The latter also had the lowest phenolic concentration. The antioxidant activity values strictly correlated with the total phenolic content but not with the iso-?-acid amount. The Principal Component Analysis failed in distinguishing beers based on their declared type/styles. This was a predictable result since the beer styles don’t represent a compositional classification but they are rather used to indicate commercial types.</p>

scholarly journals Effect of cold plasma treatment on physico-chemical parameters and antioxidant activity of minimally processed kiwifruit

2015 ◽  
Vol 107 ◽  
pp. 55-65 ◽  
Author(s):  
Ileana Ramazzina ◽  
Annachiara Berardinelli ◽  
Federica Rizzi ◽  
Silvia Tappi ◽  
Luigi Ragni ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Plasma Treatment ◽  
Cold Plasma ◽  
Chemical Parameters ◽  
Minimally Processed ◽  
Physico Chemical

scholarly journals Antimicrobial and Antibiofilm Activity against Staphylococcus aureus of Opuntia ficus-indica (L.) Mill. Cladode Polyphenolic Extracts

Antioxidants ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 117 ◽  
Author(s):  
Federica Blando ◽  
Rossella Russo ◽  
Carmine Negro ◽  
Luigi De Bellis ◽  
Stefania Frassinetti
Keyword(s):  
Staphylococcus Aureus ◽  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Biofilm Formation ◽  
Ex Vivo ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Total Phenolic ◽  
Antibiofilm Activity ◽  
Opuntia Ficus Indica

Plant extracts are a rich source of natural compounds with antimicrobial properties, which are able to prevent, at some extent, the growth of foodborne pathogens. The aim of this study was to investigate the potential of polyphenolic extracts from cladodes of Opuntia ficus-indica (L.) Mill. to inhibit the growth of some enterobacteria and the biofilm formation by Staphylococcus aureus. Opuntia ficus-indica cladodes at two stages of development were analysed for total phenolic content and antioxidant activity by Oxygen Radical Absorbance Capacity (ORAC) and Trolox equivalent antioxidant capacity (TEAC) (in vitro assays) and by cellular antioxidant activity in red blood cells (CAA-RBC) (ex vivo assay). The Liquid Chromatography Time-of-Flight Mass Spectrometry (LC/MS–TOF) analysis of the polyphenolic extracts revealed high levels of piscidic acid, eucomic acid, isorhamnetin derivatives and rutin, particularly in the immature cladode extracts. Opuntia cladodes extracts showed a remarkable antioxidant activity (in vitro and ex vivo), a selective inhibition of the growth of Gram-positive bacteria, and an inhibition of Staphylococcus aureus biofilm formation. Our results suggest and confirm that Opuntia ficus-indica cladode extracts could be employed as functional food, due to the high polyphenolic content and antioxidant capacity, and used as natural additive for food process control and food safety.

Physico-chemical changes in cladodes of Opuntia ficus-indica as a function of the growth stage and harvesting areas

2020 ◽  
Vol 251 ◽  
pp. 153196
Author(s):  
Belbahloul Mounir ◽  
El Goumi Younes ◽  
Msaad Asmaa ◽  
Zouhri Abdeljalil ◽  
Anouar Abdellah
Keyword(s):  
Growth Stage ◽  
Chemical Changes ◽  
Opuntia Ficus Indica ◽  
Physico Chemical

Quality characteristics of premium mutton nuggets enriched with almond-based functional components

2017 ◽  
Vol 57 (3) ◽  
pp. 592 ◽  
Author(s):  
R. R. Kumar ◽  
B. D. Sharma ◽  
S. K. Mendiratta ◽  
O. P. Malav ◽  
S. Talukder ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Dietary Fibre ◽  
Calorific Value ◽  
Cholesterol Content ◽  
Optimum Level ◽  
Constant Weight ◽  
Texture Profile ◽  
Physico Chemical ◽  
Product Profile ◽  
Functional Components

Nuts, besides favourable fatty acid and nutrient profile, possess certain bioactive/functional compounds, which elicit several health benefits. Premium mutton nuggets with improved nutritional profile were developed by reducing the traditionally added animal fat in emulsion with the incorporation of almond paste. In order to substitute added fat by nut-based fat, standardised almond paste with 50% lipids in its proximate were explored at three levels (10%, 15% and 20%) to determine the optimum level of its incorporation. The extra lipid content of almond paste was adjusted by replacing lean on constant weight basis. The premium product was further analysed and compared with traditional product for detailed product profile, which included lipid profile, calorific value, dietary fibre, antioxidant activity and texture profile. Based on physico-chemical and sensory scores, the optimum level of incorporation for almond paste was adjudged as 15%. Developed premium mutton nuggets had significantly less (P < 0.05) cholesterol content, increased dietary fibre, enhanced antioxidant activity and acceptable texture profile. Thus, it was concluded that functional components of almond can be very well incorporated in the conventional process to develop a superior product.

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