Antioxidant activity of daidzein, a natural antioxidant, and its spectroscopic properties in organic solvents and phosphatidylcholine liposomes

Dwiecki, Krzysztof; Neunert, Grażyna; Polewski, P.; Polewski, Krzysztof

doi:10.1016/j.jphotobiol.2009.06.012

Cited by 54 publications

(31 citation statements)

References 45 publications

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“…A well-protected cell membrane is favored for improving the water-holding capacity, which is dependent on better antioxidative status. It is well known that isoflavones have antioxidative capacity (Mitchell et al, 1998;Liu et al, 2005;Dwiecki et al, 2009). Eq was found to have antioxidant activity in vivo and in vitro (Jackman et al, 2007a and b;Chung et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

The effect of equol injection in ovo on posthatch growth, meat quality and antioxidation in broilers

Wei

et al. 2011

Animal

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In order to investigate the long-term effects of equol (Eq) on growth and meat quality in broilers, 0 mg (control, Con), 20 mg (low dose, L) and 100 mg (high dose, H) Eq, respectively, were injected into fertile eggs (146 eggs per group) on 7 days of embryos. After hatch, chickens were fed under the same conditions and slaughtered at 49 days of age for sample collection and analysis. The results showed that body weight and composition were marginally affected by Eq administration ( P . 0.05). Compared with their male counterparts, the meat quality of female broilers was affected greatly after Eq administration. The redness (a*) of meat color in the L and H groups of female broilers was significantly decreased by 24.10% and 21.50% ( P , 0.01), respectively; cooking loss decreased by 12.11% and 16.82%, respectively, in the L and H groups ( P , 0.01); 24 h and 48 h drip loss was significantly decreased by 60.27% and 45.72% ( P , 0.05), respectively, in the H group. However, for male broilers, only cooking loss was significantly decreased by high dosage of Eq treatment ( P , 0.05). The antioxidative status was analyzed for discovering further the mechanism behind the improvement of the water-holding capacity caused by Eq in female broilers. The activity of glutathione peroxidase (GSHPx) in plasma was greatly increased by 15.94% in the L group ( P , 0.01), whereas the total superoxide dismutase activity (T-SOD) and the content of malondialdehyde in plasma were not changed ( P . 0.05). The T-SOD activity in the breast muscle of the L and H groups were significantly improved by 23.14% and 18.82% ( P , 0.05), respectively. GSHPx in the breast muscle of the H group showed a tendency to increase ( P 5 0.06 , 0.1). These results indicate that Eq injection in ovo does not affect the growth of broilers, but significantly improves the water-holding capacity of the muscle, especially in female broilers, which is related to the improvement of antioxidative status.

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Section: Discussionmentioning

confidence: 99%

The effect of equol injection in ovo on posthatch growth, meat quality and antioxidation in broilers

Wei

et al. 2011

Animal

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“…The liposomes with the cosolubilized antioxidants were prepared by the extrusion method according to [15]. For liposomes preparation, dry PC was dissolved in chloroform, antioxidants were dissolved in methanol, and then both solutions were mixed in required proportions.…”

Section: Preparation Of Liposomesmentioning

confidence: 99%

“…Moreover, in living cells, free radicals generating in metabolic processes often attack phospholipids membrane exactly from the external medium. We used this radical generator for lipid peroxidation after thermal homolysis according to [15]. The progress of the lipids peroxidation was measured with C11-BODIPY581/591 used as a fluorescent indicator of oxidation.…”

Section: Individual Antioxidantsmentioning

confidence: 99%

Synergistic and antagonistic effects between alpha-tocopherol and phenolic acids in liposome system: spectroscopic study

Neunert

Górnaś

Dwiecki

et al. 2015

Eur Food Res Technol

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“…It contains a large amount of macronutrient such as protein (40%) and lipid (20%) and also rich in polyphenolic compounds namely isoflavones (Shao et al, 2009). Twelve isoflavones have been reported in soybean, however genistein and daidzein are found to be dominant and perform as important antioxidant properties (Dwiecki et al, 2009). In addition, soybean also contains phenolic compounds such as ferulic acid, chlorogenic acid, gallic acid, vanilic acid and syringic acid that exhibited antioxidant activities (Duenas et al, 2012;Tyug et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Capacity and Amino Acid Profiles of Egg Tofu

Murad

Abdullah²,

Mustapha³

2013

American Journal of Applied Sciences

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Tofu contains high quality protein source and antioxidant which could reduce risk of cancer. This research aims to determine the effect of soymilk and egg ratios on the antioxidant capacity, daidzein and genistein content and amino acid profiles of egg tofu. Egg tofu was prepared using soymilk and fresh egg in ratios of 1:1, 2:1, 3:1 and 4:1. Glucono-Delta-Lactone (GDL) was added in the egg tofu to act as a coagulating agent. Increased of soymilk at all ratios had significantly (p<0.05) increased in Ferric-Reducing Antioxidant Power (FRAP), daidzein and genistein content of egg tofu. Conversely, decreased in soymilk ratio had significantly (p<0.05) increased the radical scavenging activities of the 2,2-Azino-Bis 3-ethylbenzothiazoline-6-Sulfonic acid (ABTS) and 2,2-Diphenyl-2-Picrylhydrazyl (DPPH) in egg tofu. Increased of soymilk ratio up to 3:1 caused decreased in amino acid methionine (met) and cystein (cys) significantly (p<0.05). A significant (p<0.01) and a positive correlation was observed between Total Phenolic Content (TPC) and FRAP (r = 0.93). However, there was a negative (p<0.01) correlation between TPC and DPPH (r = -0.83). The antioxidant capacity of egg tofu in DPPH assay showed a positive and significant (p<0.01) correlation with cysteine, methionine and tryptophan with r value of 0.92, 0.93 and 0.96 respectively. Higher content of egg in egg tofu had contributed to the increased of antioxidant capacity as indicated in DPPH assay and ABTS assay as well as amino acid methionine and cysteine.

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Antioxidant activity of daidzein, a natural antioxidant, and its spectroscopic properties in organic solvents and phosphatidylcholine liposomes

Cited by 54 publications

References 45 publications

The effect of equol injection in ovo on posthatch growth, meat quality and antioxidation in broilers

The effect of equol injection in ovo on posthatch growth, meat quality and antioxidation in broilers

Synergistic and antagonistic effects between alpha-tocopherol and phenolic acids in liposome system: spectroscopic study

Antioxidant Capacity and Amino Acid Profiles of Egg Tofu

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