Phenolic composition antioxidant capacity and antibacterial

The antioxidant activity of strawberries could contribute to the prevention of cancer, cardiovascular and other chronic diseases Hannum, Previous article in issue. The reactive solution was well mixed and allowed to stand for 15 min before the absorbance at nm was measured.

The olive fruits were milled in the hammer crusher, and then the olive paste was kneaded for 30 min with the addition of warm water 50 mL of water was added to g of paste. Absorbance at nm was determined after 30 min. Therefore, only fresh drupes without damage were selected. The DPPH radical-scavenging curves clearly indicated that DPPH radical-scavenging activity for blackberry and blueberry increased significantly with extract concentrations over 0.

The mixture was shaken 30 s and 5 mL of extraction solution water and MeOH Antioxidants are thought to be highly effective in the management of ROS-mediated tissue impairments. The flow rate was 0. The inhibition percentage of absorbance was calculated using the formula specified in the DPPH method.

Moreover, several studies have shown that the phenolic compounds in olive oil have a high antimicrobial activity against a broad spectrum of foodborne pathogens Medina et al.

Prior to assay, the ABTS. The fruits were randomly picked from several plants in the orchards during the period of March for strawberry to July for blueberry and blackberry inand then the samples within each fruit type were combined for further analyses. Coefficients of determination R 2 were calculated using Microsoft Excel Blackberries are aggregate fruits produced by several species in the genus Rubus e.

In addition to extending the shelf life of foods by inhibiting lipid peroxydation, phenolic compounds scavenge free radicals and can consequently protect the human body Cicerale et al.

Olive oils from Algeria: Phenolic compounds, antioxidant and antibacterial activities

The research will be helpful for seeking new effective antioxidants from these berries, and understanding their health value for Chinese consumers. Liquid—liquid extraction of phenolic compounds TOP A Liquid—liquid extraction system was carried out in the same extraction conditions, reported by Tsimidou et al.

Plant materials and sample preparation Fresh mature fruits of Vaccinium ashei cv. The results show that the amounts of total phenols and O-diphenols are highly variety-dependent.

Blueberries also help maintain healthy blood flow via several mechanisms including healthy low-density lipoprotein LDL oxidation, normal platelet aggregation, and maintenance of endothelial function Kalt et al.

Toyonoka strawberry were harvested from orchards surrounding Lishui in Nanjing, China. The average folin-ciocalteun content of total phenols in the samples analyzed was Furthermore, no reports are available on the antioxidant capacity or detailed phenolic composition of blueberries, blackberries, or strawberries cultivated in Nanjing, China.

The total phenolic and flavonoid contents were measured using colorimetric methods. After the vertical centrifugation, the oil was collected and left to stand. Algeria, one of the main producers of olive oil in the world 9thhas a wide range of varieties.Olive oils from Algeria: Phenolic compounds, antioxidant and antibacterial activities F.

Laincer a, R. Laribi a, A. Tamendjari a, *, L.

Arrar b, P. Rovellini c and S. Venturini c a Laboratory of Applied Biochemistry, Faculty of Natural. Apr 25,  · Berries are a good source of natural antioxidants. In the present study, the total antioxidant capacity and phenolic composition of three berry fruits (blueberry, blackberry, and strawberry) cultivated in Nanjing were investigated.

The total phenol content, but not the flavonoid to total phenol ratio, was strongly associated with higher antibacterial activity against several fish and lamb spoilage bacteria in zone of inhibition and minimum inhibitory concentration assays as well as greater antioxidant capacity in the DPPH (2,2-diphenylpicrylhydrazyl) radical assay.

composition and antibacterial and antioxidant activities of the essential oils of. limits the phenolic content in the final matrix because many compounds are non-volatile. However, there are phenol-free out by the Trolox equivalent antioxidant capacity (TEAC) method and the radical ABTS ˙+ (2,2-azino.

Free phenolic acid and flavonoid profiles were analyzed by high performance liquid chromatography, while antioxidant capacities were evaluated using scavenging assays of 1,1-diphenylpicrylhydrazyl radical (DPPH), ferric reducing antioxidant power and total antioxidant capacity.

Abstract. Bee products (e.g., propolis and bee pollen) are traditional healthy foods. In this study, antioxidant properties and in vitro antibacterial activity of honeybee pollen and propolis methanol extracts were determined.

Propolis with higher phenolic content showed significant greater activity over pollen extracts.

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Phenolic composition antioxidant capacity and antibacterial
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