Antifungal Activity of Spent Coffee Ground Extracts

Calheiros, Daniela; Días, María Inês; Calhelha, Ricardo C.; Barros, Lillian; Ferreira, Isabel C.F.R.; Fernandes, Chantal; Gonçalves, Teresa

doi:10.3390/microorganisms11020242

Cited by 17 publications

(9 citation statements)

References 56 publications

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“…Martinez et al (2017) mentioned that chlorogenic acid totally inhibited mycelium growth and spore germination of S. sclerotium, F. solani, V. dahliae, B.cinerea and C. sojina. More recently, Calheiros et al (2023) reported that chlorogenic acid caused chitin, glucan and ergosterol reduction of the cell wall and the cell membrane of C. paropsilosis. Li et al (2017) showed that gallic acid inhibits the ergosterol biosynthesis of T. ruburum.…”

Section: Discussionmentioning

confidence: 99%

Antifungal effect of fresh and stored olive mill wastewater and its ethyl acetate extract against plant pathogenic fungi

Jarboui,

Saber Azab,

Bilel

et al. 2024

Plant Prot. Sci.

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Worldwide olive oil production is increasing annually by 5%, with olive mill wastewater (OMW) production estimated to be around 6 × 10 6 m 3 , 98% of which is in the Mediterranean basin (FA-OSTAT 2020). Since 2015, Saudi Arabia has witnessed a 58.5% increase in olive oil production each year, with an annual production of 80 000 t in the Kingdom of Saudi Arabia (KSA) in the northern regions of Al-Jouf, Al Qurayyat, Hail, and Tabuk cities, where climatic and geographical conditions are suitable for olive tree cultivation (Hemida et al. 2014;Alhajoj & Alowaiesh 2019). Therefore, OMW production in KSA is estimated at around 160 000 m 3 (Aly et al. 2014).

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Section: Discussionmentioning

confidence: 99%

Antifungal effect of fresh and stored olive mill wastewater and its ethyl acetate extract against plant pathogenic fungi

Jarboui,

Saber Azab,

Bilel

et al. 2024

Plant Prot. Sci.

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“…Martinez et al [50] mentioned that chlorogenic acid totally inhibited mycelium growth and spore germination of S. sclerotium, F. solani, V. dahliae, B. cinerea and C. sojina. More recently, Calheiros et al [51] reported that chlorogenic acid caused chitin, glucan and ergosterol reduction of the cell wall and the cell membrane of C. paropsilosis. Li et al [52] showed that gallic acid inhibits the ergosterol biosynthesis of T. ruburum, while Bitencourt et al [53] mentioned that quercetin reduces the ergosterol levels of T. ruburum.…”

Section: Discussionmentioning

confidence: 99%

Antifungal Activity of Fresh and Stored Olive Mill Wastewater (OMW) and Its Ethyl Acetate Extract against Plant Pathogens Fungi

Jarboui¹,

Azab²,

Moustafa³

et al. 2023

Preprint

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Olive mill wastewater (OMW) has serious environmental problems considering its high organic matter, especially its phenolic compounds. The OMW application in crop protection is an alternative environmentally eco-friendly method reducing the chemicals pesticides impact on human health and environment. The present work aimed to study the antifungal activity of fresh and stored OMW and its ethyl acetate extract against phytopathogenic fungi: Syncephalastrum racemosum (S. racemosum), Paramyrothecium roridum (P. roridum), Fusarium oxysporum (F. oxysporum) and Verticilium dahlia (V. dahlia). The OMW was stored at 25 and 45 °C for 3 months. Fresh and stored OMW were used non-sterile, sterile and centrifuged. Phenolic and flavonoid compounds were extracted and identified by HPLC analysis. High inhibition of studied fungi was shown by fresh OMW and its derivative compounds, while OMW storage, sterilization, and centrifugation increased mycelium growth of studied fungi, especially S. racemosum that showed a relative resistance against stored OMW effect and its ethyl acetate extract. Under storage conditions, some phenolic and flavonoid compounds disappeared (resorcinol and vanillic acid), while the concentration of other compounds increased (gallic acid, chlorogenic acid and quercetin). This work highlighted the ability to use fresh OMW as a bio-agent to protect plants from fungi diseases.

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“…The ergosterol extraction and quantification was carried out in 15 mg of the fungal samples previously prepared with the alcoholic KOH method following the protocol described previously [81] with minor modifications [82]. The spectral absorbance range between 220 and 300 nm was obtained in a plate reader using a SpectraMax ® Plus 384 spectrophotometer.…”

Section: Synergy Testing Assaysmentioning

confidence: 99%

Azorean Black Tea (Camellia sinensis) Antidermatophytic and Fungicidal Properties

Fernandes,

Sousa-Baptista,

Lenha-Silva

et al. 2023

Molecules

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The treatment of dermatophytoses, the most common human fungal infections, requires new alternatives. The aim of this study was to determine the antidermatophytic activity of the aqueous Azorean Black Tea extract (ABT), together with an approach to the mechanisms of action. The phytochemical analysis of ABT extract was performed by HPLC. The dermatophytes susceptibility was assessed using a broth microdilution assay; potential synergies with terbinafine and griseofulvin were evaluated by the checkerboard assay. The mechanism of action was appraised by the quantification of the fungal cell wall chitin and β-1,3-glucan, and by membrane ergosterol. The presence of ultrastructural modifications was studied by Transmission Electron Microscopy (TEM). The ABT extract contained organic and phenolic acids, flavonoids, theaflavins and alkaloids. It showed an antidermatophytic effect, with MIC values of 250 µg/mL for Trichophyton mentagrophytes, 125 µg/mL for Trichophyton rubrum and 500 µg/mL for Microsporum canis; at these concentrations, the extract was fungicidal. An additive effect of ABT in association to terbinafine on these three dermatophytes was observed. The ABT extract caused a significant reduction in β-1,3-glucan content, indicating the synthesis of this cell wall component as a possible target. The present study identifies the antidermatophytic activity of the ABT and highlights its potential to improve the effectiveness of conventional topical treatment currently used for the management of skin or mucosal fungal infections.

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Antifungal Activity of Spent Coffee Ground Extracts

Cited by 17 publications

References 56 publications

Antifungal effect of fresh and stored olive mill wastewater and its ethyl acetate extract against plant pathogenic fungi

Antifungal effect of fresh and stored olive mill wastewater and its ethyl acetate extract against plant pathogenic fungi

Antifungal Activity of Fresh and Stored Olive Mill Wastewater (OMW) and Its Ethyl Acetate Extract against Plant Pathogens Fungi

Azorean Black Tea (Camellia sinensis) Antidermatophytic and Fungicidal Properties

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