Essential oil of Coffee arabica L. husks: a brilliant source of antimicrobial and antioxidant agents

Al‐Yousef, Hanan M.; Amina, Musarat

doi:10.4066/biomedicalresearch.29-17-867

Cited by 15 publications

(25 citation statements)

References 20 publications

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“…Hydro-distillation of C. arabia husks resulted in isolation of essential oil comprised of fifty five components, which were identified by GC-MS, as reported in our previous study and also the isolated oil have shown significant antibacterial and antioxidant activities [11]. As a continuation of our research [11] on the base of biological screening of obtained essential oil, the present study describes the QS and biofilm inhibitory properties (BI) of coffee husks oil against pathogenic bacteria using the reporter Chromobacterium violaceum CVO26. The coffee husks oil inhibited growth against pathogens, 500 µg/ml for CV O26 and 800 µg/ml for PAO1.…”

Section: Resultssupporting

confidence: 54%

“…Air-dried husks (100 g) obtained from C. arabica were subjected to hydrodistallation for 3-4 h using an all glass Clevenger-type apparatus as described by Al-Yousef et al [11], to obtain essential oil 0.31% v/w. A total of 55 components were analysed in the essential oil and were identified on the basis of GC retention time and comparing with Wiley library 2006 as well as comparison the fragmentation patterns of their mass spectra with those reported in the literatures [11,15,16] and various of the identified components were identified as sesquiterpenes, amides, phenolic, fatty acids, sterols, alkanes furanol, compounds and alcohols [11].…”

Section: Essential Oil Isolation Proceduresmentioning

confidence: 99%

“…Effect of sub-MICs of test agents on virulence factors of PAO1 such as LasB elastase, pyocyanin, swarming motility, extracellular polymeric substances (EPS) extraction and quantification was assessed as described previously [11,20].…”

Section: Effect On Virulence Factor Productionmentioning

confidence: 99%

“…Commercially coffee husk have been used as fermented tea, food supplements, and animal feed [10]. Furthermore, very recently coffee husks are reported to be the potential source of antimicrobial and antioxidant activities [11]. In the current paper our focus on Coffee husk, an agro-and food industry wastes that can be utilized as valuable and cheap sources of antimicrobial compounds.…”

Section: Introductionmentioning

confidence: 99%

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Anti-quorum and biofilm formation inhibition by coffee husk oil (Coffee arabica L.)

Al‐Yousef¹,

Amina²

2018

biomedicalresearch

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The volatile oil of the coffee husk of Coffee arabica (Rubiaceae) was obtained by GCMS. This oil showed quorum sensing inhibition activity which were investigated for antipathogenic potential against P. aeruginosa (PAO1). The results showed that significant inhibition on the production of virulence P. aeruginosa and Biofilm Formation (BF). Moreover, the treatment with sub-MICs of coffee husk oil significantly inhibited the quorum sensing-mediated BF, extracellular polymeric substances production and swarming motility in these pathogens. Wide-spectrum in vitro inhibition of QS controlled virulence factors such as violacein, elastase, pyocyanin, EPS and biofilm in test pathogens was determined.

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Section: Resultssupporting

confidence: 54%

Section: Essential Oil Isolation Proceduresmentioning

confidence: 99%

Section: Effect On Virulence Factor Productionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Anti-quorum and biofilm formation inhibition by coffee husk oil (Coffee arabica L.)

Al‐Yousef¹,

Amina²

2018

biomedicalresearch

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“…The agar well diffusion method was described in detail by Al-Yousef (2018). Detection of minimum inhibitory concentration (MIC) of ONP&ONP-PE toward some of drug resistant clinical strains was detected by broth dilution method, using p-iodonitro tetrazolium violet dye as an indicator of bacterial growth as described by Al-Yousef and Musarat (2018).…”

Section: Methodsmentioning

confidence: 99%

β-Sitosterol derived compound from onion husks non-polar fraction reduces quorum sensing controlled virulence and biofilm production

Al‐Yousef

Sheikh

2019

Saudi Pharmaceutical Journal

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Quorum sensing is an important regulatory factor of P. aeruginosa virulence induction such as BF, motility, formations of proteases, pyocyanin, and some toxins. The aim of the current study is to detect the effect of the pet.ether extract from onion husk and compound drive from it on quorum sensing and virulence formations of P. aeruginosa. Quorum sensing inhibiting effect of the pet.ether extract of onion husk and a compound drive from it, was evaluated by C. violaceum reporter using dilution method as well as an antioxidant by using DPPH. The efficacious of: Quorum sensing inhibiting on pet.ether fraction and compound derived from it, were investigated for their activities toward biofilm and pyocyanin synthesis as well as motility from P. aeruginosa. The pet.ether fraction and compound derived from it of onion husk exhibited potent antimicrobial, antioxidant and Quorum sensing inhibiting effects. The pet.ether fraction and compound derived from it possesses significant reduction on pyocyanin and biofilm induction of P. aeruginosa. Moreover, they significantly inhibited swimming motilities of P. aeruginosa. For the first time, our study showed the medical importance of Allium cepa L. as antimicrobial, antioxidant as well as Quorum sensing inhibiting and virulence suppressors of P. aeruginosa. Thus, these might emphasized on Allium cepa L as a natural source for attenuating toxins of the Pseudomonas.

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Investigation on gasification of agricultural wastes: the case of macadamia husk

Linh,

Van Dong,

Nam

2021

Vietnam Journal of Chemistry

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Macadamia husk, an overlooked residue of macadamia production, could become a promising feedstock for gasification with the help of extensive engineering knowledge. This study aimed at establishing a comprehensive database of the macadamia husk's characteristics as well as its behaviors during the whole gasification process. The results showed a high heating value of macadamia husk (17.47 MJ/kg) along with its low ash content (3.42 wt%), which is very suitable for thermo‐conversion processes. However, with a relatively high moisture content (15.72 wt%), macadamia husk might require additional pre‐treatment such as drying. The thermal decomposition of macadamia husk, determined through the TGA‐DTG technique, began at 220 °C and reached a maximum mass reduction rate (Rmax = 0.41 %/°C) at 295 °C. The gasification conversion rate was conducted under three distinctive atmospheres: carbon dioxide gasification (20 % CO2 in N2), steam gasification (20 % H2O in N2), and their mixed atmosphere were finished after 560, 495, and 395 s, respectively. The resulting database of this study would be of great use for the design, modeling as well as optimization of a macadamia husk gasifier.

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Essential oil of Coffee arabica L. husks: a brilliant source of antimicrobial and antioxidant agents

Cited by 15 publications

References 20 publications

Anti-quorum and biofilm formation inhibition by coffee husk oil (Coffee arabica L.)

Anti-quorum and biofilm formation inhibition by coffee husk oil (Coffee arabica L.)

β-Sitosterol derived compound from onion husks non-polar fraction reduces quorum sensing controlled virulence and biofilm production

Investigation on gasification of agricultural wastes: the case of macadamia husk

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