Antioxidant activity and phytochemical screening of Nepeta nepetella aqueous and methanolic extracts from Algeria

Seladji, Meryem; Bekhechi, Chahrazed; Beddou, Fawzia; Dib, Hanane; Bendimerad, Nassima

doi:10.7324/japs.2014.40203

Cited by 22 publications

(4 citation statements)

References 33 publications

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“…As Seladji et al reported in their work, other species of Nepeta (N. nepetella) presented similar to higher activity than gallic acid which is in accord with our results [20]. Although at the same concentrations, the extract was weaker, but at the peak concentration (8 mg/ml), same range of activity with gallic acid 0.5 mg/ml was reported.…”

Section: Discussionsupporting

confidence: 93%

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Assessment of the anti-oxidative potential of Nepeta crispa Willd. (Lamiaceae) and its effects on oxidative stability of virgin sunflower oil under accelerated storage conditions

Motaghed

Nili‐Ahmadabadi²,

Moradkhani³

2022

J. Med. Plants

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Background: Nepeta crispa, is an annual plant native to certain regions of Hamadan province in Iran. Objective: This study aims to investigate the antioxidant potential of N. crispa. Methods: Hydro-distillated essential oil and methanol extract from aerial parts of N. crispa were obtained. They were subjected to several assays (DPPH, FRAP, TBARS, peroxide value and β-carotene-linoleic acid assay) in order to evaluate their antioxidant properties and their effect on prevention of oxidation in sunflower oil. Results:The extract consistently exhibited more activity than the essential oil in each and every one of the assays. The activity of the essential oil was not significant compared to positive controls or even the extract. The results from DPPH and FRAP assays correlated well with one another but those obtained from β-carotene-linoleic acid assay were to some extents inconsistent with the others. The results from TBARS and peroxide value assays revealed that certain concentrations of the extract effectively prevent the oxidation process in sunflower oil. Conclusion: Our data suggest that the methanol extract of N. crispa may be considered as novel bio-resource of natural antioxidants for using in pharmaceutical and food industries. Hopefully as the future research progress, new lights will be shed on characterization of components in the extract and the mechanisms through which they provide antioxidant activity.

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Section: Discussionsupporting

confidence: 93%

“…21, No. 82: [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] species, 69 of which have been found in Iran [2]. Nepeta crispa Willd.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the anti-oxidative potential of Nepeta crispa Willd. (Lamiaceae) and its effects on oxidative stability of virgin sunflower oil under accelerated storage conditions

Motaghed

Nili‐Ahmadabadi²,

Moradkhani³

2022

J. Med. Plants

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“…The efficacy of a molecule or substance to reduce Fe 3+ into Fe 2+ by donation of its electron is also known as a good indicator of its antioxidant activity. The reaction leads to the formation of a Pearl's Prussian blue color which absorbs light at 700 nm (Seladji et al, 2014 ). Figure 3b shows the FRAP of the plant extracts compared to BHT.…”

Section: Resultsmentioning

confidence: 99%

Effect of some local plant extracts on fatty acid composition of fish (Alestes baremoze) during smoking and sun drying in the Far‐North region of Cameroon

Tabanty Zambou,

Tenyang,

Birault

et al. 2023

Food Science & Nutrition

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The objective of this study was to assess the antioxidant activities of three plant extracts (Moringa oleifera leaves, Xylopia aethiopica fruits, and Allium cepa leaves) and to evaluate their effects on the preservation of fish polyunsaturated fatty acids (PUFAs) during smoking and sun‐drying processes. PUFAs are highly prone to oxidation during fish processing. The plant extracts were analyzed for their polyphenol contents and were evaluated for their total antiradical capacity. The polyphenol components of each plant were characterized. The hydroethanolic and aqueous extracts were added to the fish at concentrations of 3, 6, 9, and 12 g/L and 10, 20, 30, and 40 g/L, respectively. Butylated hydroxytoluene (BHT) was used as a positive control at a concentration of 2 g/L to compare the antioxidant effects of the plant extracts. The treated fish was subjected to smoking or sun drying and the fatty acid composition of the fish lipid extract was assessed. The results showed that the total polyphenolic, flavonoid, and tannin contents varied significantly from one plant extract to the other (p < .05). The radical scavenging and FRAP increased significantly with the concentration of the plant extracts (p < .05). An HPLC analysis of the extracts led to the preliminary identification of four hydroxycinnamic acids in M. oleifera and X. aethiopica, one anthocyanin and one flavone glycoside in M. oleifera, and four flavan‐3‐ols in X. aethiopica. Moreover, eight flavonols were preliminarily identified in the three plants. Compared to the control product, these plant extracts significantly protected fish PUFAs from oxidation (p < .05). The aqueous extract of A. cepa at 40 g/L better preserved omega‐3 in fish during smoking and sun drying than the control product. Incorporating the three plant extracts during smoking and sun‐drying processes can effectively preserve the PUFAs in fish. Therefore, these plants are viable sources of natural antioxidants in the preservation of fish products.

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“…extracts showed a strong antifungal activity against micromycetes, except for quite resistant Aspergillus niger. Antibacterial MIC values (mg.mL solvent for the extraction of phenolics compounds (17)(18), we opted for this solvent. The present study was aimed at investigating the antibacterial and antifungal properties of leaf methanol extract of Hadi et al (2016Hadi et al ( , 2017Hadi et al ( , 2018Hadi et al ( , 2020 selected Iranian Nepeta species.…”

Section: Native and Endemic Iranian Nepeta Spp: Powerful Antimicrobia...mentioning

confidence: 99%

Native and endemic Iranian Nepeta spp.: powerful antimicrobial agents

Najmeh Hadi,

Miloš Nikolić,

Fatemeh Sefidkon

et al. 2023

Cell Mol Biol (Noisy-le-grand)

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Antioxidant activity and phytochemical screening of Nepeta nepetella aqueous and methanolic extracts from Algeria

Cited by 22 publications

References 33 publications

Assessment of the anti-oxidative potential of Nepeta crispa Willd. (Lamiaceae) and its effects on oxidative stability of virgin sunflower oil under accelerated storage conditions

Assessment of the anti-oxidative potential of Nepeta crispa Willd. (Lamiaceae) and its effects on oxidative stability of virgin sunflower oil under accelerated storage conditions

Effect of some local plant extracts on fatty acid composition of fish (Alestes baremoze) during smoking and sun drying in the Far‐North region of Cameroon

Native and endemic Iranian Nepeta spp.: powerful antimicrobial agents

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