In vitro evaluation of antioxidant, antibacterial and antifungal activities of <i>Terfezia claveryi</i> Chatin

Neggaz, Samir; Fortas, Zohra; Chenni, Mohammed; Abed, Douniazad El; Ramli, B.; Kambouche, Nadia

doi:10.1007/s10298-015-0993-4

Cited by 12 publications

(10 citation statements)

References 8 publications

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“…68 Likewise, the Soxhlet extract of Terfezia claveryi showed a greater antimicrobial activity than that of the maceration extract. 69 The abundant microbiota on the surface or peridium of truffles was believed to inhibit the antimicrobial activity of truffles, 68 but we speculate that the relationship between the antimicrobial compounds and the microbiota can be two ways, in which, the antimicrobial compounds in truffles may control the occurrence and survival of pathogenic microbes, explaining why the truffles are safe for consumption. However, more studies are required to confirm our speculation.…”

Section: Yeasts and Moldsmentioning

confidence: 96%

“…Nonetheless, the sampling size in the present study is short of taking any robust conclusion on the occurrence of these pathogens in the truffles. There are studies, although still scarcely explored, reported that truffles contain bioactive chemicals such as phenolic compounds that could inhibit the growth of some pathogenic microbes, [68][69][70][71][72] but the antimicrobial activity of truffles may vary depending on the truffle species and extraction methods. 68,69 In a recent study, the antimicrobial activities of aqueous, methanol, hexane, and ethyl acetate extracts from ten different truffle species against 16 microbial species were investigated.…”

Section: Yeasts and Moldsmentioning

confidence: 99%

“…There are studies, although still scarcely explored, reported that truffles contain bioactive chemicals such as phenolic compounds that could inhibit the growth of some pathogenic microbes, [68][69][70][71][72] but the antimicrobial activity of truffles may vary depending on the truffle species and extraction methods. 68,69 In a recent study, the antimicrobial activities of aqueous, methanol, hexane, and ethyl acetate extracts from ten different truffle species against 16 microbial species were investigated. Of all the extracts from the ten truffle species of Tuber and Terfezia genera, only five extracts from four truffle species (Terfezia magnusii, T. aestivum, T. gennadii, and T. melanosporum) showed a positive antimicrobial activity against pathogenic microbes such as L. monocytogenes, Shigella flexneri, and Staphylococcus aureus.…”

Section: Yeasts and Moldsmentioning

confidence: 99%

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Microbiological evaluation of whole, sliced, and freeze‐dried black truffles (Tuber melanosporum) under vacuum packaging and refrigerator storage

et al. 2022

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Background: Black truffle (Tuber melanosporum) is usually available in a form of a whole, offcut pieces (sliced to remove defects or broken from larger truffles) or freeze-dried (one of the preservation methods), but there is insufficient knowledge about microbial spoilage of these products. The changes in the microbiology of whole, sliced, and freezedried black truffles (Tuber melanosporum) were determined in this study. All truffle samples were vacuum-packaged and stored at 4 C for 30 days and evaluated on day 0, 4, 8, 15, and 30. The total plate count, Pseudomonas spp. count, yeast, and mold count, as well as the presence of Listeria spp., Salmonella spp., and Bacillus spp., were examined. Results:The main finding of this study was that the total microbial count, Pseudomonas spp. count, and yeasts count associated with the freeze-dried truffles were generally lower than that of the whole and sliced truffles. While mold, Listeria spp., and Salmonella spp. were not detected (<2.00 log CFU/g), Bacillus spp. were detected at a very low count in all sample types (<3.48 log CFU/g). Conclusion:Overall, the results suggest the need to establish an effective decontamination treatment before packaging and storage to delay microbial spoilage.

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Section: Yeasts and Moldsmentioning

confidence: 96%

Section: Yeasts and Moldsmentioning

confidence: 99%

Section: Yeasts and Moldsmentioning

confidence: 99%

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Microbiological evaluation of whole, sliced, and freeze‐dried black truffles (Tuber melanosporum) under vacuum packaging and refrigerator storage

et al. 2022

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“…All experiments were carried out in triplicate. The antimicrobial activity was determined by measuring the zones of inhibition (ZOI) (Neggaz et al, 2015).…”

Section: Antimicrobial Assaymentioning

confidence: 99%

Assessing the Antimicrobial, Antioxidant and Anti-inflammatory Potential of Ethanolic Extract of Irradiated Rosa canina L. Fruits

2021

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“…Table 3 shows total comet scores in lymphocytes after exposures of different methanolic extracts of T. claveryi and the mean total comet score distributions of different methanol extracts at different concentrations are shown in Figure 3. (12).…”

Section: Genotoxic Activities Of T Claveryi Extractsmentioning

confidence: 99%

Antioxidant, Anti-urease Activities and Genotoxic Effects of Terfezia claveryi Methanol Extracts on Human Lymphocytes

Taşkın¹,

Devecioglu²,

Şenkardeş³

2017

Clin Exp Health Sci

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Terfezia claveryi koyu kahve renkli bir trüf mantarı olup, Türkiye'de gıda olarak kullanımı oldukça yaygındır. Bu yüzden, mantarın biyolojik aktivitelerinin ve toksitesinin incelemesi önemli bir husustur. Bu çalışma ile T. claveryi metanol ekstrelerinin antioksidan, anti-üreaz aktivitelerinin araştırılması ve her bir ekstrenin genotoksisitesinin değerlendirilmesi amaçlanmıştır. Yöntemler: Metanol ekstrelerinin antioksidan aktiviteleri 2,2-difenil-1-pikrilhidrazil (DPPH), 2,2'-azinobis-(3-etilbenzotiazolin-6-sulfonik asit) (ABTS) ve demir (III) iyonu indirgeme antioksidan gücü (FRAP) yöntemleri ile incelendi. Ekstrelerin toplam fenolik bileşik içeriği Folin-Ciocalteu reaktifi (FCR) ile tayin edildi. Metanol ekstrelerinin antiüreaz aktiviteleri indofenol yöntemi ile değerlendirildi. Ayrıca, T. claveryi ektrelerinin DNA hasarı üzerindeki etkisi alkali comet tekniği ile insan lenfosit hücrelerinde incelendi. Bulgular: UM ekstresi, MM ekstresinden daha güçlü DPPH radikal süpürücü aktivite gösterdi [radikalin % 50'sinin inhibisyonunu sağlayan madde konsantrasyonu (IC50): 0.77±0.01 mg/mL, 1.17±0.02 mg/mL, sırasıyla p<0.0001]. Fakat her iki ekstrenin standarda göre daha düşük radikal süpürücü aktivite gösterdiği tespit edildi (p<0.0001). Her iki ekstrenin farklı konsantrasyonlarının çözücü DMSO ile kıyaslandığında DNA hasarına yol açtığı (p<0.0001) ve MM ekstresi ile inkübe edilen hücrelerde total comet skorunun yüksek bulunduğu saptandı (p<0.05). UM ekstresi, MM ekstresinden daha yüksek demir (III) iyonu indirgeyici ve anti-üreaz aktivite göstermekle beraber fark istatistiksel anlamlı bulunmadı ve her iki yöntemde de ekstrelerin pozitif kontrollerden daha düşük aktivite gösterdiği saptandı (p<0.0001). Sonuç: T. claveryi metanol ekstreleri lenfositler üzerinde genotoksisiteye neden olmaktadır ve her iki ekstre standartlara göre düşük antioksidan aktivite göstermektedir. Bu ön çalışmanın sonuçlarını ileri çalışmalarda farklı hücre dizilerinde doğrulanması gerekmektedir.

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In vitro evaluation of antioxidant, antibacterial and antifungal activities of Terfezia claveryi Chatin

Cited by 12 publications

References 8 publications

Microbiological evaluation of whole, sliced, and freeze‐dried black truffles (Tuber melanosporum) under vacuum packaging and refrigerator storage

Microbiological evaluation of whole, sliced, and freeze‐dried black truffles (Tuber melanosporum) under vacuum packaging and refrigerator storage

Assessing the Antimicrobial, Antioxidant and Anti-inflammatory Potential of Ethanolic Extract of Irradiated Rosa canina L. Fruits

Antioxidant, Anti-urease Activities and Genotoxic Effects of Terfezia claveryi Methanol Extracts on Human Lymphocytes

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