Anti-Glycation Activities of Phenolic Constituents from  Silybum marianum (Milk Thistle) Flower in Vitro and  on Human Explants

Silybum marianum (L.) Gaertn. (aka milk thistle) constitutes the source of silymarin (SILM), a mixture of different flavonolignans and represents a unique model for their extraction. Here we report on the development and validation of an ultrasound-assisted extraction (UAE) method of S. marianum flavonolignans follow by their quantification using LC system. The optimal conditions of this UAE method were: aqueous EtOH 54.5% (v/v) as extraction solvent, with application of an ultrasound (US) frequency of 36.6 kHz during 60 min at 45 °C with a liquid to solid ratio of 25:1 mL/g dry weight (DW). Following its optimization using a full factorial design, the extraction method was validated according to international standards of the association of analytical communities (AOAC) to ensure precision and accuracy in the quantitation of each component of the SILM mixture. The efficiency of this UAE was compared with maceration protocol. Here, the optimized and validated conditions of the UAE allowed the highest extraction yields of SILM and its constituents in comparison to maceration. During UAE, the antioxidant capacity of the extracts was retained, as confirmed by the in vitro assays CUPRAC (cupric ion reducing antioxidant capacity) and inhibition of AGEs (advanced glycation end products). The skin anti-aging potential of the extract obtained by UAE was also confirmed by the strong in vitro cell-free inhibition capacity of both collagenase and elastase. To summarize, the UAE procedure presented here is a green and efficient method for the extraction and quantification of SILM and its constituents from the fruits of S. marianum, making it possible to generate extracts with attractive antioxidant and anti-aging activities for future cosmetic applications.

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Antifungal Activity against Botryosphaeriaceae Fungi of the Hydro-Methanolic Extract of Silybum marianum Capitula Conjugated with Stevioside

Plants ◽

10.3390/plants10071363 ◽

2021 ◽

Vol 10 (7) ◽

pp. 1363

Author(s):

Natalia Langa-Lomba ◽

Laura Buzón-Durán ◽

Eva Sánchez-Hernández ◽

Pablo Martín-Ramos ◽

José Casanova-Gascón ◽

...

Keyword(s):

Plant Protection ◽

Fungal Species ◽

Added Value ◽

Milk Thistle ◽

Phytochemical Analysis ◽

Silybum Marianum ◽

Methanolic Extracts ◽

Botryosphaeria Dieback

Silybum marianum (L.) Gaertn, viz. milk thistle, has been the focus of research efforts in the past few years, albeit almost exclusively restricted to the medicinal properties of its fruits (achenes). Given that other milk thistle plant organs and tissues have been scarcely investigated for the presence of bioactive compounds, in this study, we present a phytochemical analysis of the extracts of S. marianum capitula during the flowering phenological stage (stage 67). Gas chromatography–mass spectroscopy results evidenced the presence of high contents of coniferyl alcohol (47.4%), and secondarily of ferulic acid ester, opening a new valorization strategy of this plant based on the former high-added-value component. Moreover, the application of the hydro-methanolic extracts as an antifungal agent has been also explored. Specifically, their activity against three fungal species responsible for the so-called Botryosphaeria dieback of grapevine (Neofusicoccum parvum, Dothiorella viticola and Diplodia seriata) has been assayed both in vitro and in vivo. From the mycelial growth inhibition assays, the best results (EC90 values of 303, 366, and 355 μg·mL−1 for N. parvum, D. viticola, and D. seriata, respectively) were not obtained for the hydroalcoholic extract alone, but after its conjugation with stevioside, which resulted in a strong synergistic behavior. Greenhouse experiments confirmed the efficacy of the conjugated complexes, pointing to the potential of the combination of milk thistle extracts with stevioside as a promising plant protection product in organic Viticulture.

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Phenolic profile and in vitro antioxidant power of different milk thistle [Silybum marianum (L.) Gaertn.] cultivars

Industrial Crops and Products ◽

10.1016/j.indcrop.2015.12.023 ◽

2016 ◽

Vol 83 ◽

pp. 11-16 ◽

Cited By ~ 24

Author(s):

Luigi Lucini ◽

David Kane ◽

Marco Pellizzoni ◽

Annarita Ferrari ◽

Erminio Trevisi ◽

...

Keyword(s):

Milk Thistle ◽

Silybum Marianum ◽

Phenolic Profile ◽

Antioxidant Power

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A Green Ultrasound-Assisted Extraction Optimization of the Natural Antioxidant and Anti-aging Flavonolignans from Milk Thistle Silybum marianum (L.) Gaertn. Fruits for Cosmetic Applications

10.20944/preprints201907.0252.v1 ◽

2019 ◽

Author(s):

Samantha Drouet ◽

Emilie Leclerc ◽

Laurine Garros ◽

Duangjai Tungmunnithum ◽

Atul Kabra ◽

...

Keyword(s):

International Standards ◽

Milk Thistle ◽

Silybum Marianum ◽

Ultrasound Assisted Extraction ◽

Solid Ratio ◽

Ultrasound Frequency ◽

Assisted Extraction ◽

Ultrasound Assisted ◽

The Individual

Silybum marianum (L.) Gaertn. (aka milk thistle) constitute the almost exclusive source of silymarin, a mixture of different flavonolignans, and is thus considered as a unique model for their extraction. The present research deals with ultrasound-assisted extraction (UAE) of S. marianum flavonolignans and their quantification using LC system. The optimal conditions for UAE were: aqueous EtOH 54.5% (v/v) as solvent, applying an ultrasound frequency of 36.6 kHz during an extraction time of 60 min at 45°C with a liquid to solid ratio of 25:1 ml/g DW. Following optimization, the extraction method was validated according to international standards of the association of analytical communities (AOAC) in order to ensure its precision and accuracy for the quantitation of the individual silymarin components. The efficiency of UAE was compared with maceration protocol of the same duration. The optimized and validated conditions allowed highest extraction yields of flavonolignans in comparison to maceration. The antioxidant capacity of the extracts was confirmed by the CUPRAC assays and inhibition of advanced glycation end products. The skin anti-aging action was also confirmed toward the strong in vitro inhibition capacity of the obtained extract against collagenase and elastase enzymes. The procedure presented here allows a green efficient extraction and quantification of the main flavonolignans from the fruits of S. marianum with attractive antioxidant and anti-aging activities for future cosmetic applications.

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The pathogen of Milk Thistle (Silybum marianum (L.) Gaertn.) in the Czech Republic

JOURNAL OF ADVANCES IN AGRICULTURE ◽

10.24297/jaa.v5i1.4264 ◽

2015 ◽

Vol 5 (1) ◽

pp. 538-544

Author(s):

Ivana Safrankova ◽

Kolackova P ◽

Rutivckova G

Keyword(s):

Czech Republic ◽

Environmental Factors ◽

Active Compound ◽

Fungal Species ◽

Medicinal Herb ◽

Milk Thistle ◽

Silybum Marianum ◽

The Czech Republic

Milk thistle is grown in the Czech Republic as a medicinal herb; silymarin is isolated from its achenes and used for the production of liver and gallbladder medicine. The quality and content of the active compound is influenced not only by environmental factors, but also by pests and pathogens. The occurrence of pests of milk thistle variety Silyb was observed in two localities during the years 2011 2013. In the year 2011 the mycoflora of seeds of four milk thistle varieties was determined. Representatives of 15 species were isolated from the seeds, most of them saprophytic. 21 fungal species were isolated and identified from milk thistle plants during the vegetation; Septoria silybi among the most important ones. Possibilities of protection of milt thistle against pathogens are discussed.

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A COMPARATIVE STUDY OF STANDARDIZATION METHODS FOR THE MILK THISTLE FRUIT (SILYBUM MARIANUM)

University proceedings Volga region Medical sciences ◽

10.21685/2072-3032-2016-4-4 ◽

2016 ◽

Author(s):

S. A. Burkush ◽

◽

S. V. Chizhov ◽

N. V. Firstova ◽

N. N. Glebova ◽

...

Keyword(s):

Comparative Study ◽

Milk Thistle ◽

Silybum Marianum ◽

Standardization Methods

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Extraction, Chemical Composition, Antioxidant Property and In vitro Anticancer Activity of Silymarin from Silybum Marianum On Kb and A549 Cell Lines

Current Drug Discovery Technologies ◽

10.2174/1570163817666200827111127 ◽

2020 ◽

Vol 17 ◽

Author(s):

Mojgan Azadpour ◽

Mohammad Mehdi Farajollahi ◽

Ali Mohammad Varzi ◽

Pejman Hashemzadeh ◽

Hossein Mahmoudvand ◽

...

Keyword(s):

Anticancer Activity ◽

Cell Lines ◽

A549 Cell ◽

Hplc Analysis ◽

Antioxidant Properties ◽

Radical Scavenging ◽

Antioxidant Property ◽

Silybum Marianum ◽

Stable Free Radical

Introduction: This study aimed to evaluate the antioxidant property of silymarin (SM) extracted from the seed of Silybum marianum and its anticancer activity on KB and A549 cell lines following 24, 48, and 72 h of treatment. Methods: Ten grams of powdered S. marianum seeds were defatted using n-hexane for 6 hours and then extracted by methanol. The silymarin extracted of extraction components The extracted components of silymarin were measured by spectrophotometric assay and HPLC analysis. 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, phenol content, total flavonoid content, and total antioxidant capacity were measured to detect the antioxidant properties of SM. The anticancer activity of the SM on cell lines evaluated by MTT. Results: In HPLC analysis, more than 50% of the peaks were related to silibin A and B. SM was reducedDPPH (the stable free radical) with a 50% inhibitory concentration (IC50) of 6.56 μg/ ml in comparison with butylated hydroxyl toluene (BHT), which indicated an IC50 of ~3.9 μg/ ml.The cytotoxicity effect of SM on the cell lines was studied by MTT assay. The cytotoxicity effect of the extracted silymarin on KB and A549 cell lines was observed up to 80 and 70% at 156 and 78 µg/ml, respectively. The IC50 value of the extracted SM on KB and A549 cell lines after 24 hours of treatment was seen at 555 and 511 µg/ml, respectively. Conclusion: Due to the good antioxidant and anticancer properties of the isolated silymarin, its use as an anticancer drug is suggested.

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Phenolic constituents and inhibitory effects of the leaf of Rauvolfia vomitoria Afzel on free radicals, cholinergic and monoaminergic enzymes in rat’s brain in vitro

Journal of Basic and Clinical Physiology and Pharmacology ◽

10.1515/jbcpp-2020-0144 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Olubukola H. Oyeniran ◽

Adedayo O. Ademiluyi ◽

Ganiyu Oboh

Keyword(s):

Lipid Peroxidation ◽

Free Radicals ◽

Methanolic Extract ◽

Array Detector ◽

Oh Radicals ◽

Inhibitory Effects ◽

Methanolic Extracts ◽

Phenolic Constituents ◽

Rauvolfia Vomitoria

AbstractObjectivesRauvolfia vomitoria is a medicinal plant used traditionally in Africa in the management of several human diseases including psychosis. However, there is inadequate scientific information on the potency of the phenolic constituents of R. vomitoria leaf in the management of neurodegeneration. Therefore, this study characterized the phenolic constituents and investigated the effects of aqueous and methanolic extracts of R. vomitoria leaf on free radicals, Fe2+-induced lipid peroxidation, and critical enzymes linked to neurodegeneration in rat’s brain in vitro.MethodsThe polyphenols were evaluated by characterizing phenolic constituents using high-performance liquid chromatography coupled with diode array detector (HPLC-DAD). The antioxidant properties were assessed through the extracts ability to reduce Fe3+ to Fe2+; inhibit ABTS, DPPH, and OH radicals and Fe2+-induced lipid peroxidation. The effects of the extracts on AChE and MAO were also evaluated.ResultsThe phenolic characterization of R. vomitoria leaf revealed that there were more flavonoids present. Both aqueous and methanolic extracts of R. vomitoria leaf had inhibitory effects with the methanolic extract having higher significant (p≤0.05) free radicals scavenging ability coupled with inhibition of monoamine oxidases. However, there was no significant (p≤0.05) difference obtained in the inhibition of lipid peroxidation and cholinesterases.ConclusionThis study suggests that the rich phenolic constituents of R. vomitoria leaf might contribute to the observed antioxidative and neuroprotective effects. The methanolic extract was more potent than the aqueous extract; therefore, extraction of R. vomitoria leaf with methanol could offer better health-promoting effects in neurodegenerative condition.

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Seasonal dynamics of the phenolic constituents of the cones and leaves of oriental Thuja (Platycladus orientalis L.) reveal their anti-inflammatory biomarkers

RSC Advances ◽

10.1039/d1ra01681d ◽

2021 ◽

Vol 11 (40) ◽

pp. 24624-24635

Author(s):

Reham S. Darwish ◽

Hala M. Hammoda ◽

Doaa A. Ghareeb ◽

Ali S. A. Abdelhamid ◽

Fathallah M. Harraz ◽

...

Keyword(s):

Seasonal Dynamics ◽

Inflammatory Biomarkers ◽

Inflammatory Activity ◽

Platycladus Orientalis ◽

Phenolic Constituents ◽

Anti Inflammatory

In this study, the seasonal dynamics of the flavonoids in the cones and leaves of oriental Thuja (Platycladus orientalis L. Franco) as well as the in vitro anti-inflammatory activity of their extracts were investigated.

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Identification of Withania somnifera-Silybum marianum-Trigonella foenum-graecum Formulation as a Nutritional Supplement to Contrast Muscle Atrophy and Sarcopenia

Nutrients ◽

10.3390/nu13010049 ◽

2020 ◽

Vol 13 (1) ◽

pp. 49

Author(s):

Laura Salvadori ◽

Manuela Mandrone ◽

Tommaso Manenti ◽

Catia Ercolani ◽

Luca Cornioli ◽

...

Keyword(s):

Protein Kinase ◽

Muscle Mass ◽

Muscle Atrophy ◽

Withania Somnifera ◽

Myoblast Differentiation ◽

C2c12 Myotubes ◽

Silybum Marianum ◽

Trigonella Foenum Graecum ◽

Age Related

Background: Muscle atrophy, i.e., the loss of skeletal muscle mass and function, is an unresolved problem associated with aging (sarcopenia) and several pathological conditions. The imbalance between myofibrillary protein breakdown (especially the adult isoforms of myosin heavy chain, MyHC) and synthesis, and the reduction of muscle regenerative potential are main causes of muscle atrophy. Methods: Starting from one-hundred dried hydroalcoholic extracts of medical plants, we identified those able to contrast the reduction of C2C12 myotube diameter in well-characterized in vitro models mimicking muscle atrophy associated to inflammatory states, glucocorticoid treatment or nutrient deprivation. Based on their ability to rescue type II MyHC (MyHC-II) expression in atrophying conditions, six extracts with different phytochemical profiles were selected, mixed in groups of three, and tested on atrophic myotubes. The molecular mechanism underpinning the effects of the most efficacious formulation, and its efficacy on myotubes obtained from muscle biopsies of young and sarcopenic subjects were also investigated. Results: We identified WST (Withania somnifera, Silybum marianum, Trigonella foenum-graecum) formulation as extremely efficacious in protecting C2C12 myotubes against MyHC-II degradation by stimulating Akt (protein kinase B)-dependent protein synthesis and p38 MAPK (p38 mitogen-activated protein kinase)/myogenin-dependent myoblast differentiation. WST sustains trophism in C2C12 and young myotubes, and rescues the size, developmental MyHC expression and myoblast fusion in sarcopenic myotubes. Conclusion: WST strongly counteracts muscle atrophy associated to different conditions in vitro. The future validation in vivo of our results might lead to the use of WST as a food supplement to sustain muscle mass in diffuse atrophying conditions, and to reverse the age-related functional decline of human muscles, thus improving people quality of life and reducing social and health-care costs.

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