Volatile and phenolic contents and antioxidant and antibacterial properties of Tunisian milk thistle and mastic oils

Dhouibi, Ines; Jridi, Mourad; Flamini, Guido; Jabeur, Hazem; Masmoudi, M.; Bouaziz, Mohamed

doi:10.1007/s41207-020-00200-z

Cited by 5 publications

(5 citation statements)

References 54 publications

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“…p-Cymene (spicy flavor), isocaryophyllene (woody, spicy flavor) and β-caryophyllene (woody, spicy flavor) were also detected in the oil. The descriptive terms determined for milk thistle seed oil in our study generally match the volatile compound descriptions detected in the study of Dhouibi et al (2020).…”

Section: Sensory Properties and Consumer Preferences Of The Oilsupporting

confidence: 69%

“…Therefore, this study presents important information to the literature for the first time. In one study (Dhouibi et al, 2020), volatile compounds in cold-pressed milk thistle seed oil were determined. 1,8-Cineole (minty, herbal flavor), methylpyrazine (roasted flavor), 2,5-dimethylpyrazine (roasted flavor) and hexanal (vegetative, herbal flavor) were found as the major volatile compounds in milk thistle seed oil.…”

Section: Sensory Properties and Consumer Preferences Of The Oilmentioning

confidence: 99%

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Cold-pressed milk thistle seed oil: physico-chemical properties, composition and sensory analysis

Ayduğan

Yılmaz

2022

grasasaceites

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Cold pressed oil was produced from milk thistle seeds, and its composition and sensorial properties were determined. The seeds were found to contain 14.98% oil, 17.31% protein and 4.14% ash. The peroxide value of the oil (11.39 meqO2/kg oil) was within acceptable limits according to codex, but the free fatty acidity value (3.45%) exceeded the limit. The oil melted at -20.18 °C and crystallized at -3.71 °C. Linoleic acid (51.97%), β-sitosterol (67.56 mg/100 g oil) and γ-tocopherol (53.60 mg/kg oil) were determined as the main components, respectively. Six sensory descriptive terms (sweet, spicy, raw vegetable, straw, roasted and throat-catching) were described for the oil. Consumer tests proved that cold-pressed milk thistle seed oil had intermediate acceptance scores and consumer satisfaction was moderate. In conclusion, it is thought that milk thistle seeds could be used for the production of edible gourmet oil. Further studies regarding the composition of the bio-active molecules in the oil are anticipated.

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Section: Sensory Properties and Consumer Preferences Of The Oilsupporting

confidence: 69%

Section: Sensory Properties and Consumer Preferences Of The Oilmentioning

confidence: 99%

Cold-pressed milk thistle seed oil: physico-chemical properties, composition and sensory analysis

Ayduğan

Yılmaz

2022

grasasaceites

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“…Another example is 2,5-Dimethylpyrazine, which in our study showed strong antibacterial activity. Antibacterial and antifungal activities of pyrazines are reported in several independent studies (Dhouibi et al 2020, Vlassi et al 2020. Overall, the pure volatile compounds we tested against the putative spider pathogens showed antimicrobial effects indicating their potential role in pathogen defense.…”

Section: Discussionmentioning

confidence: 68%

Antimicrobial volatiles emitted by members of the nest microbiome of social spiders

Lammers

Nazipi

Zweers

et al. 2022

FEMS Microbiology Letters

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Microbes produce and respond to a range of structurally and functionally diverse volatiles. Many microbial volatiles have antimicrobial properties. Since volatiles can diffuse through complex three-dimensional systems like spider nests they are promising pathogen protection for social arthropods. Here, we analyzed the volatilomes of five nest microbiome members of the Namibian, social spider Stegodyphus dumicola, namely the bacteria Massilia sp. IC2-278, Massilia sp. IC2-477, Sphingomonas sp. IC-11, Streptomyces sp. IC-207, and the fungus Aureobasidium sp. CE_32, and tested their antimicrobial activity against two putative spider pathogens, namely Bacillus thuringiensis and Purpureocillium lilacinum. Most nest microbiome members released volatilomes with antibacterial and/or antifungal activities under in vitro conditions. The analysis of their volatilomes using GC/Q-TOF revealed that they include numerous antimicrobial volatiles. We tested the antimicrobial activity of five pure volatile compounds found in the volatilomes and revealed that all of them were antibacterial and/or antifungal. We could not identify the same antimicrobial volatiles as in a previous in situ study, but our results indicate that social spider-associated microorganisms as a source of antimicrobial volatiles are important for pathogen inhibition. Additionally, we showed the influence of the volatilomes on the antibiotic sensitivity of B. thuringiensis offering novel approaches to counter antibiotic resistance.

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“…trans‐ Cinnamic acid and its derivatives had an antioxidant, anti‐atherosclerosis, and anti‐inflammatory potentials, also, an inhibitory effect on production of advanced glycosylation end products (AGEs) [27,53–55] . Furthermore, silymarin flavonoids is a major constituent of some plants such as Silybum marianum , that can be used as antidiabetic, anti‐Alzheimer, anti‐dermatitis, even anti‐cancer and hepatoprotective [32,33,56,57] . Catechin (+) as flavan‐3‐ol in flavonoid group, [51] was found in variety of fruits (grapes, apples, strawberries, cherries, etc.…”

Section: Resultsmentioning

confidence: 99%

“…[27,[53][54][55] Furthermore, silymarin flavonoids is a major constituent of some plants such as Silybum marianum, that can be used as antidiabetic, anti-Alzheimer, anti-dermatitis, even anti-cancer and hepatoprotective. [32,33,56,57] Catechin (+) as flavan-3-ol in flavonoid group, [51] was found in variety of fruits (grapes, apples, strawberries, cherries, etc. ), vegetables and green tea.…”

Section: Flavonoids Compositionmentioning

confidence: 99%

Phenolic Profiling, Antioxidant, and Antibacterial Activities of Selected Medicinal Plants from Tunisia

Hamrouni

Romdhane

Benmoussa

et al. 2023

Chemistry & Biodiversity

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Phytochemical screening of aqueous extract from six medicinal wild plants grown in South‐eastern of Tunisia: Atriplex halimus, Teucrium polium, Moricandia arvensis, Deverra tortuoa, Haplophyllum tuberculatum and Polygonum equisetiforme were evaluated. Both decoction and ultrasound assisted extraction were used. Antioxidant, antibacterial proprieties, and phenolic profiling, using LC‐ESI‐MS method, were assessed. Total polyphenols, flavonoids, and condensed tannins contents ranged from 7.47±0.19 to 22.25±0.49 mg GAE/g Dw, 5.47±0.06 to 7.55±0.07 mg RE/g Dw, and 0.33±0.02 to 19.43±0.64 mg TAE/g Dw, respectively. Moreover, the reducing power and DPPH tests showed that P. equisetiforme (EC50: 12.50±0.50 μg/ml; DPPH⋅+: 213.49±4.24 mg TEAC/g DW), T. polium (EC50: 25.00±1.00 μg/ml; DPPH⋅+: 181.39±9.47 mg TEAC/g DW) as well as H. tuberculatum (EC50: 56.25±0.25 μg/ml; DPPH⋅+: 177.83±5.85 mg TEAC/g DW) extracts were the most effective natural antioxidants. For anti‐bacterial activity, the ultrasonic extract of H. tuberculatum showed the highest activity against both P. aeruginosa (13.50±0.71 mm) and S. aureus (13.00±0.00 mm) at 10 mg/ml. Furthermore 24 phenolic compounds were identified, with predominance of quinic acid, gallic acid, protocatechuic acid, syringic acid, p‐coumaric acid, trans‐ferulic acid, catechin (+), trans‐cinnamic and silymarin. These results were further consolidated by to heatmap clustering with P. equisetiforme, H. tuberculatum, T. polium as the main antioxidant and antibacterial sources which supports their domestication and industrial use.

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Volatile and phenolic contents and antioxidant and antibacterial properties of Tunisian milk thistle and mastic oils

Cited by 5 publications

References 54 publications

Cold-pressed milk thistle seed oil: physico-chemical properties, composition and sensory analysis

Cold-pressed milk thistle seed oil: physico-chemical properties, composition and sensory analysis

Antimicrobial volatiles emitted by members of the nest microbiome of social spiders

Phenolic Profiling, Antioxidant, and Antibacterial Activities of Selected Medicinal Plants from Tunisia

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