The Flavonoids and Phenolic Acids of the Genus <i>Silphium</i> and Their Chemosystematic Value

Williams, Jeffrey; Wojcińska, Małgorzata; Calabria, Lalita M.; Linse, Klaus D.; Clevinger, Jennifer A.; Mabry, Tom J.

doi:10.1177/1934578x0900400325

Cited by 5 publications

(6 citation statements)

References 24 publications

(31 reference statements)

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“…The second one was assigned as quercetin glucuronide (RT 3. 96 min and m / z 477.0708), yielding the major fragment ion at m / z 301.0646, which corresponds to an O -glycosidic cleavage as already mentioned above [44]. The third one with [M − H] − at m / z 447.1041 gave origin to a fragment ion at m / z 301.0722 (aglycone) and was assigned to quercetin- O -deoxyhesoxide [22].…”

Section: Resultsmentioning

confidence: 97%

Polyphenolic Profile and Antioxidant Activity of Leaf Purified Hydroalcoholic Extracts from Seven Mexican Persea americana Cultivars

et al. 2019

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Persea americana (avocado) is a fruit consumed worldwide; however, since avocado leaves are apparently a natural ingredient that can be used as a traditional medicine, they can be a potential source of bioactive compounds. This study aimed to analyze the antioxidant activity of seven Mexican avocado leaf extracts by DPPH•, ABTS•+, and lipid peroxidation (LPO), and to identify the compound profile by liquid chromatography coupled to mass spectrometry/electron spray ionization. The highest free radical-scavenging activity was observed for Platano Delgado and Criollo 6 avocado cultivars havin IC50 values of 271.86 ± 13.69 and 269.56 ± 6.53 for DPPH• and ABTS•+ radicals, respectively, while the best result for lipid oxidation inhibition was registered in Criollo 6 cultivar extract. In this study forty-one compounds were detected in avocado leaves of the the seven cultivars analyzed, and of these compounds, eighteen phenolics were identified for first time in such plant material. The present study demonstrated that Mexican cultivars of Persea americana possess diverse polyphenolic compounds with strong antioxidant activity, which might be useful in the food and pharmaceutical industries.

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Section: Resultsmentioning

confidence: 97%

Polyphenolic Profile and Antioxidant Activity of Leaf Purified Hydroalcoholic Extracts from Seven Mexican Persea americana Cultivars

et al. 2019

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“…Among phenolic acids of Silphium spp. leaves identified complexes of benzoic and cinnamic acids (Williams et al, 2009). Among benzoic acids identified p-hydroxybenzoic, protocatechuic, isovanilic, gallic, ellagic, vanillic, syringic, and salicylic; among cinnamic acids found chlorogenic, rosmarinic, p-coumaric, caffeic, hydrocaffeic, ferulic, isoferulic, m-coumaric (Kowalska et al, 2022).…”

Section: Resultsmentioning

confidence: 96%

“…The antioxidant activity of plant extracts has been correlated with polyphenol compounds of different natures (Piluzza and Bullitta, 2009;Spiridon et al, 2011;Terpinc et al, 2012). It has been determined diversity of polyphenol compounds of different Asteraceae species has pharmacological importance and systematic value (Williams et al, 2009;Pavlenko-Badnaoui et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

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A Comparative Study of Silphium spp. Antioxidant Activity

Vergun

2023

Agrobiodivers Improv Nutr health life Qual

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This study aimed to evaluate the parameters of antioxidant activity of different parts of Silphium spp. during budding and flowering periods. The four species of Silphium L. genus from the experimental collection of the Cultural Flora Department of M.M. Gryshko National Botanical Garden of the NAS of Ukraine were prepared and used in this research. Total polyphenol content was from 12.32 (S. asperrimum, stems at the budding) to 95.21 (S. laciniatum, leaves at the flowering stage) mg GAE.g -1 DW depending on the organ and stage of vegetation. The total content of phenolic acids in ethanol extracts of investigated plants was from 3.52 (S. asperrimum, buds at the budding) to 34.58 (S. laciniatum, leaves at the flowering) mg CAE.g -1 DW. The total flavonoid content in investigated extracts was from 3.67 (S. perfoliatum, stems at the budding) to 57.31 (S. laciniatum, leaves at the budding) mg QE.g -1 DW. Antioxidant activity was determined by two assays namely the DPPH method and molybdenum-reducing power of extracts and was from 3.33 (S. trifoliatum, stems at the budding) to 9.11 (S. laciniatum, flowers at flowering) mg TE.g -1 and from 29.11 (S. trifoliatum, stems at the budding) to 185.22 (S. laciniatum, leaves at the flowering) mg TE.g -1 DW, respectively. It was found a very strong correlation between total polyphenol compounds, flavonoids, phenolic acids, and molybdenum reducing power r = 0.715-0.905. A weak or moderate correlation was found between DPPH scavenging activity and investigated phenolic compounds (r = 0.110-0.522). Obtained data can be useful for further deep biochemical investigation of plant raw of Silphium spp. and in livestock nutrition branch.

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“…[45], chlorogenic acid in the leaves of lemon balm [65], and caffeic and protocatechuic acids in the roots of sage [75]. Furthermore, LC-MS and NMR techniques were also used for identification and structure establishment of eighteen phenolic acids and mono-and diglycosidic flavonoids [76].…”

Section: Extraction and Determination Of Phenolic Acidsmentioning

confidence: 99%

Methods for Extraction and Determination of Phenolic Acids in Medicinal Plants: A Review

Arceusz

Wesołowski

Konieczyński

2013

Natural Product Communications

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Phenolic acids constitute a group of potentially immunostimulating compounds. They occur in all medicinal plants and are widely used in phytotherapy and foods of plant origin. In recent years, phenolic acids have attracted much interest owing to their biological functions. This paper reviews the extraction and determination methods of phenolic acids in medicinal plants over the last 10 years. Although Soxhlet extraction and ultrasonic assisted extraction (UAE) are commonly used for the extraction of phenolic acids from plant materials, alternative techniques such as supercritical fluid extraction (SFE), and accelerated solvent extraction (ASE) can also be used. After extraction, phenolic acids are determined usually by liquid chromatography (LC) owing to the recent developments in this technique, especially when it is coupled with mass spectrometry (MS). Also detection systems are discussed, including UV-Vis, diode array, electrochemical and fluorimetric. Other popular techniques for the analysis of this group of secondary metabolites are gas chromatography coupled with mass spectrometry (GC-MS) and capillary electrophoresis (CE).

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The Flavonoids and Phenolic Acids of the Genus Silphium and Their Chemosystematic Value

Cited by 5 publications

References 24 publications

Polyphenolic Profile and Antioxidant Activity of Leaf Purified Hydroalcoholic Extracts from Seven Mexican Persea americana Cultivars

Polyphenolic Profile and Antioxidant Activity of Leaf Purified Hydroalcoholic Extracts from Seven Mexican Persea americana Cultivars

A Comparative Study of Silphium spp. Antioxidant Activity

Methods for Extraction and Determination of Phenolic Acids in Medicinal Plants: A Review

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