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Antioxidant activity, total phenolic and flavonoids contents of three herbs used as condiments and additives in pickles products

100%
Pirbalouti A. G., Setayesh M., Siahpoosh A., Mashayekhi H.
Herba Polonica
|
2013
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tom 59
|
nr 3
Heracleum lasiopetalum Boiss, Kelussia odoratissima Mozaff., and Echinophora platyloba DC. belong the Apiaceae family. They are Iranian endemic plants. These three herbs have been used as food additives in traditional preparations such as pickles. Antioxidant activity (AA) of methanol extracts (ME) of the plants was evaluated by three assays, including DPPH, FRAP, and TEAC. From all three assays, comparing all the MEs for their IC50 and EC1 values, E. platyloba had the highest AA. Total phenolic content (TPC) of the extracts ranged from 74 to 120 mg TAE/g. The extract of H. lasiopetalum exhibited the highest TPC. The flavonoids content (FC) of the extracts ranged from 7.63 to 14.52 mg RE/g, from which the extract of E. platyloba had the highest flavonoids concentration. A positive correlation between the FC and AA in DPPH assay was found. A significant correlation was also found between the TPC and AA in FRAP assay. These results suggested that the level of AA in these plants varied in a great extent. Our results indicated that extract of E. platyloba could be an important dietary source of flavonoids compounds with high antioxidant capacity. In addition, E. platyloba can be used as an alternative preservative and natural flavor instead of synthetic ones in food industry (especially pickles).
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Effects of date palm (Phoenix dactylifera) seed extract on heavy metals concentrations in carp (Cyprinus carpio)

100%
Mohammadi M., Soltani M., Siahpoosh A., Mehrjan M. S.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 3
The effects of different doses of date palm (Phoenix dactylifera) seed (DPS) extract on heavy metals (Pb, Cd, As, Hg) concentrations of common carp (Cyprinus carpio) were evaluated. The fish (31.6±3.7 g) were assigned to five treatments of three replications each. Five treatments were held using five different DPS extracts at doses of 0% (control), 0.5%, 1%, 2%, and 4%. The results revealed that heavy metals concentrations of fish decreased in the 0.5% and 1% treatments (P<0.05). Hg and Cd concentrations in muscle decreased in all treatments (P<0.05). The results of this research clearly show that the addition of DPS extract to a fish diet has a significant effect on heavy metals concentrations (P<0.05). DPS extracts were shown to berich in phenolics and fl avonoids. Therefore, they have also been discussed as protectants against heavy metal stress. It could be concluded that feeding common carp a diet enriched with DPS extract could decrease heavy metals concentrations that can cause cancer.
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