high efficiency polyphenols content and antioxidant capacity in guatemala

polyphenols content and antioxidant capacity in beverages

Polyphenols content and antioxidant capacity in beverages

The values of polyphenols and antioxidant capacity found in the beverages made with panela indicate that they are products potentially with antioxidant capacity.

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antioxidant capacity - an overview | sciencedirect topics

Antioxidant Capacity - an overview | ScienceDirect Topics

Effects of Preparation Techniques on the Antioxidant Capacity of Coffee Brews. It has been established that coffee has relatively high antioxidant activity, compared to other beverages: three-fold higher than that of red wine and five-fold higher than that of green tea ( Pellegrini et al., 2003).

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polyphenols and antioxidant capacity of vegetables under

Polyphenols and Antioxidant Capacity of Vegetables under

The phenolic and oxygen radical absorbance capacity (ORAC) values have been measured in six fresh and frozen vegetables (beet green, spinach, broccoli, carrot, onion, and celery) from the same cultivar by analyzing the whole juice (WJ) and the acetonic extract of the squeezed pulp. To exploit the effect of the acid environment on the stability and recovery of the phenolics, perchloric acid ...

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total phenolic content and anti-oxidant capacity of some

Total Phenolic Content and Anti-oxidant Capacity of Some

The second group has low total phenolic content, but high in antioxidant capacity (tungho leaves, onion, elsholtzia leaves, green mangoes, basil leaves, lemongrass leaves, coriander leaves, green amberella,

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flavonoids, phenolics, and antioxidant capacity in the

Flavonoids, Phenolics, and Antioxidant Capacity in the

The Effects of Extract Solvents on Flavonoids, Phenolics and Antioxidant Capacity The extraction efficiency of flavonoids and total phenolics in loquat flowers varied considerably between different organic solvents, and the antioxidant capacities of loquat flowers also differed ( Table 1 ).

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flavonoids, phenolics, and antioxidant capacity in the

Flavonoids, Phenolics, and Antioxidant Capacity in the

the highest extraction efficiency among five solvents, followed by ethanol. Considering the safety and residue, ethanol is better as extraction solvent. The average content of flavonoids and phenolics of loquat flower of five cultivars were 1.59 ± 0.24 and 7.86 ± 0.87 mg/g DW, respectively, when using ethanol as extraction solvent.

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total phenolic content and antioxidant capacity

Total phenolic content and antioxidant capacity

possesses high efficiency in the extraction of phenolic compounds. The Table 1 shows the absolute values of the realized analyses for the methanolic extracts of the ten fruits. It can be observed that the jambul and acerola extracts possess greater TPC content and antioxidant capacity. In relation to the antioxidant molecules

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study of the effect of surfactants on extraction

Study of the Effect of Surfactants on Extraction

Total phenolic content and antioxidant activity were measured and compared with a commonly used procedure. The proposed method results in an increase in extraction efficiency. Unfortunately, anthocyanins cannot be analyzed in the presence of surfactants because of turbidity effects.

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olive oil testing: faq total polyphenols analysis

Olive Oil Testing: FAQ Total Polyphenols analysis

The antioxidant capacity of polyphenols has an important role for olive oil stability since it exist a correlation between the quantity of total polyphenols and the resistance to oxidation over time.

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microwave pretreatment to improve extraction efficiency

Microwave pretreatment to improve extraction efficiency

Regarding total polyphenol content, a 120 s pretreatment (MP100) was found to provide the highest polyphenol yield and richness, by a combination of microwave and pressure up to a temperature of 100 °C.

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polyphenols content and antioxidant capacity in beverages

Polyphenols content and antioxidant capacity in beverages

The values of polyphenols and antioxidant capacity found in the beverages made with panela indicate that they are products potentially with antioxidant capacity.

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polyphenols and antioxidant capacity of vegetables under

Polyphenols and Antioxidant Capacity of Vegetables under

Flavonoid content and antioxidant capacity of spinach genotypes determined by high-performance liquid chromatography/mass spectrometry. Journal of the Science of Food and Agriculture 2008 , 88 (6) , 1099-1106.

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evaluation of the antioxidant capacity and total

EVALUATION OF THE ANTIOXIDANT CAPACITY AND TOTAL

capacity of that is way the antioxidant capacity was more them 3,5 higher than that of the fruit tea and the total polyphenols content was only 2 times higher.

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total phenolic content and anti-oxidant capacity of some

Total Phenolic Content and Anti-oxidant Capacity of Some

The second group has low total phenolic content, but high in antioxidant capacity (tungho leaves, onion, elsholtzia leaves, green mangoes, basil leaves, lemongrass leaves, coriander leaves, green amberella,

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antioxidant capacity - an overview | sciencedirect topics

Antioxidant Capacity - an overview | ScienceDirect Topics

Effects of Preparation Techniques on the Antioxidant Capacity of Coffee Brews. It has been established that coffee has relatively high antioxidant activity, compared to other beverages: three-fold higher than that of red wine and five-fold higher than that of green tea ( Pellegrini et al., 2003).

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determination of polyphenols, flavonoids, and antioxidant

Determination of Polyphenols, Flavonoids, and Antioxidant

Processed seeds must be air-, heat-, vacuum- or freeze-dried before grinding and extraction to avoid degradation of native polyphenols, because high moisture or water content induces enzyme activity (Stalikas, 2007), and reduces grinding efficiency, particularly of the seed coats. Heating and exposure to light and oxygen may also affect polyphenol composition, and therefore high-temperature drying should be avoided.

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flavonoids, phenolics, and antioxidant capacity in the

Flavonoids, Phenolics, and Antioxidant Capacity in the

The flavonoids, phenolics and antioxidant capacity of loquat flowers were lower than those of Stachys lavandulifolium flowers, but higher than those of Alcea kardica flowers . Although methanol had the highest extraction efficiency, ethanol was used as extraction solvent in the following experiment due to it providing higher safety and lowed residue than other solvents [ 25 ].

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total polyphenol content and antioxidant capacity

Total Polyphenol Content and Antioxidant Capacity

The antioxidant activities were well correlated with the total polyphenol content (r 2 = 0.9935 for the ferric thiocyanate method and r 2 = 0.9141 for the 1,1-diphenyl-2-picrylhydrazyl free-radical scavenging assay). This is the first systematic screening for the quantification of polyphenols and antioxidant activity in tea commercialized in

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