Comparison of antioxidant capacity and phenolic compounds of berries, chokecherry and seabuckthorn

Li, Wende; Hydamaka, Arnold W.; Lowry, Lynda; Beta, Trust

doi:10.2478/s11535-009-0041-1

Cited by 97 publications

(82 citation statements)

References 47 publications

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“…The increase in antioxidant activity may be explained by the increase of solvent polarity. These results have been confirmed by other studies using the FRAP (Ardestani and Yazdanparast, 2007;Atmani, 2009;Li et al, 2009) and DPPH (Tian et al, 2009;Fabri et al, 2009) assays. Antioxidant and radical scavenging properties of plant extracts is associated with the presence of phenolic compounds which are able to donate hydrogen to the radical.…”

Section: Total Antioxidant Capacity (Tac)supporting

confidence: 85%

Antioxidant activity, phenolic and flavonoid content in leaves, flowers, stems and seeds of mallow (Malva sylvestris L.) from North Western of Algeria

Beghdad¹,

Benammar²,

Bensalah³

et al. 2014

Afr. J. Biotechnol.

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The nutraceutical composition (phenolics and flavonoids) of all leaves, flowers, stems and seeds of mallow, Malva sylvestris L., as well as their antioxidant properties were studied using in vitro methods: ferric reducing antioxidant power (FRAP) assay, by scavenging of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and total antioxidant capacity (TAC) based on the reduction of molybdenum (VI) to molybdenum (V). Results show that all extracts possessed concentration-dependant antioxidant activity. Leaf extracts have a highest amount of total phenolics with 24.123 ± 0.718 mg GAE/g, and total flavonoids with 0.694 ± 0.017 mg RE/100 g. However, the seed extracts presented the lowest amount in the two assays used. In addition, the AcOEt (EC 50 = 3.10 mg/ml) fraction showed the highest value of antioxidant activities for almost all parts of leaves.

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Section: Total Antioxidant Capacity (Tac)supporting

confidence: 85%

Antioxidant activity, phenolic and flavonoid content in leaves, flowers, stems and seeds of mallow (Malva sylvestris L.) from North Western of Algeria

Beghdad¹,

Benammar²,

Bensalah³

et al. 2014

Afr. J. Biotechnol.

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“…The samples showed very strong scavenging activity against DPPH after 30minutes with the organic freeze dried blueberry displaying 49%, while the organic 'Draper' and 'Duke' variety ranged between 43% and 28% respectively. The data collected are in agreement with previous studies which showed results in different varieties of blueberries ranging between 28% -60% [30]. This proved that blueberries are a good source of antioxidants which are used in eliminating and protecting cells against oxidative stress and fighting free radicals.…”

Section: Resultssupporting

confidence: 91%

“…1ml of the blueberry sample was reduced by a factor of 25 with distilled water and titrated by 0.05mg/ml DCPIP reagent to get a titre of 0.3ml and 0.4ml (Table 3) [16,[28][29][30].…”

Section: Resultsmentioning

confidence: 99%

Determination of vitamin C and total phenolic in fresh and freeze dried blueberries and the antioxidant capacity of their extracts

Shivembe¹,

Ojinnaka²

2017

Integr Food Nutr Metab

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Ascorbic acid also known as vitamin C (C 6 H 8 O 6 ) is a potent water soluble antioxidant and is naturally found in high amounts in fruits and vegetables. It is a six carbon compound related to glucose. It is an essential nutrient in the human diet as it helps in the absorption of iron, calcium and folic acid and maintenance of the connective tissues and bones, hence prevention of scurvy and a major component of cold Determination of vitamin C and total phenolic in fresh and freeze dried blueberries and the antioxidant capacity of their extracts Allan Shivembe and Delia Ojinnaka* School of Applied Sciences, London South Bank University, Borough Road, London SE1 0AA, UK AbstractBerries are often tagged 'super fruits' and command premium prices due to their purported high concentration of antioxidants and vitamin C. This study sets out to support or dispute the above assertion through a comparative analysis of the total phenolic and vitamin C in cultivated fresh (variety; Draper, Duke and Brigatta) and freeze dried blueberry coupled with the determination of the antioxidant capacity of their extracts. DCPIP, Folin-Ciocalteu and DPPH assays were used. The total phenolic content ranged from 262.64 to 287.96 mgGAE/100 gms in the fresh berries and was 426.06 mgGAE/100 gms in the freeze dried samples. The amount phenolic content of the freeze dried blueberries is significantly higher than in the fresh blueberries. Thus the apparent antioxidant health benefit of the freeze dried berries outweighs that of the fresh berries. The fresh samples had an average measurement of 10.9 mg/100 gms of vitamin C with a small variance and the total antioxidant activity ranged from 28% to 49%.

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“…2) the test for antioxidant activity for the capture of organic free radical 2,2-diphenyl-1-picryl-hydrazyl (DPPH) consisted of mixing 100 µL of the extracted solution with 1.9 mL of the DPPH solution. Subsequent readings took place in the spectrophotometer at 515 nm for 1 h to allow the absorbance to stabilize (LI et al, 2009). …”

Section: Methodsmentioning

confidence: 99%

Effect of agaricus blazei in the diet of broiler chickens on immunity, serum parameters and antioxidant activity

Fanhani

Murakami

Guerra

et al. 2016

SCA

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The effect of adding Agaricus blazei to the diet of broilers on immunity, serum parameters, and antioxidant activity was evaluated. A total of 840 1-day-old chicks were used, distributed among five levels of a completely randomized design (0.0, 0.05, 0.10, 0.15, and 0.20% A. blazei), with six replications and 28 birds per experimental unit. The weights of the thymus, spleen and cloacal bursa were not influenced (P > 0.05). Leukocytes, macrophages and nitric oxide were unaffected (P > 0.05), but at each supplementation level compared with the control, differences appeared in the percentages of eosinophils and macrophages (P < 0.05) at inclusion levels of 0.10, 0.15 and 0.20%. At 28 days, the antibody titer against Newcastle disease showed a quadratic response (P < 0.05) with supplementation, and from the estimated level of 0.08% the production of antibodies was stimulated; however, the same behavior was not observed (P > 0.05) at 42 days. Hypocholesterolemic effect was demonstrated (P < 0.05), but the serum triglyceride concentration was not affected (P > 0.05). The antioxidant activity of mushroom showed a positive linear effect (P < 0.05) on DPPH capture on day zero of meat cooling. The inclusion of A. blazei in the diet of broilers provided an immunostimulatory activity and hypocholesterolemic effect. Residual compounds with antioxidant activity were present in the meat, which may promote tissue protection of the animal in vivo, making possible the use of A. blazei as a natural additive. Key words: Cholesterol. Free radical. Immunoglobulins. Leukocytes. Mushroom. ResumoAvaliou-se o uso do Agaricus blazei na alimentação de frangos de corte sobre a imunidade, parâmetros séricos e a atividade antioxidante. Utilizou-se 840 pintos distribuídos em delineamento experimental inteiramente casualizado, cinco níveis (0,0; 0,05; 0,10; 0,15 e 0,20%) de Agaricus blazei, seis repetições e 28 aves por unidade experimental. O peso do timo, baço e bolsa cloacal não foi influenciado pelos tratamentos experimentais (P>0,05). Os leucócitos, macrófagos e o óxido nítrico não foram afetados pelos níveis de Agaricus blazei (P>0,05), no entanto a porcentagem de eosinófilo e de macrófagos diferenciaram-se (P<0,05) nos níveis de 0,10, 0,15 e 0,20% em relação ao controle. Aos 28 dias, os níveis de anticorpos contra a doença de Newcastle apresentaram resposta quadrática (P<0,05) à suplementação, e a partir do nível estimado de 0,08% estimulou-se a sua produção, contudo o mesmo

show abstract

Comparison of antioxidant capacity and phenolic compounds of berries, chokecherry and seabuckthorn

Cited by 97 publications

References 47 publications

Antioxidant activity, phenolic and flavonoid content in leaves, flowers, stems and seeds of mallow (Malva sylvestris L.) from North Western of Algeria

Antioxidant activity, phenolic and flavonoid content in leaves, flowers, stems and seeds of mallow (Malva sylvestris L.) from North Western of Algeria

Determination of vitamin C and total phenolic in fresh and freeze dried blueberries and the antioxidant capacity of their extracts

Effect of agaricus blazei in the diet of broiler chickens on immunity, serum parameters and antioxidant activity

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