Active constituents of Koelreuteria paniculata root

Wang, Yacheng; Liu, Qimei; Zheng, Dianfeng; Zhao, Yaping; Wang, Ting; Yan, Shihan; Gu, Haiping

doi:10.2298/tsci190517046w

Cited by 7 publications

(9 citation statements)

References 27 publications

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“…Chinese researchers [ 22 ], using the GC/MS method, found the availability of phenolic compounds—3,4,5,-trihydroxy-, methyl ester of benzoic acid; ethyl gallate, and pyrogallol—in leaf extracts only, but not in branches. Through the same technique and methods, extracts from other plant parts—roots [ 43 ], stem bark, and wood [ 44 ]—show the absence of phenolic components in the leaf. Other authors indicate the content of gallic acid in fresh leaves [ 18 , 19 ] and flowers [ 23 ] of K. paniculata and its derivatives (p-; m-digalloyl acid, ethyl p-trigallate, methyl m-digallate, methyl-, ethyl-gallate, and other).…”

Section: Discussionmentioning

confidence: 99%

Antioxidant and DNA-Protective Potentials, Main Phenolic Compounds, and Microscopic Features of Koelreuteria paniculata Aerial Parts

et al. 2022

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Interest in plant extracts as a natural source of antioxidants has grown significantly in recent years. The tree species Koelreuteria paniculata deserves attention due to its wide distribution, good adaptability, and growth to the degree of invasiveness in a number of European countries. The purpose of the present study was to analyze flavonoids and phenolic acids of the ethanol extracts from aerial parts of K. paniculata and to screen their antioxidant and DNA-protective activity. HPLC profiling revealed the presence of five flavonoids, with rutin (4.23 mg/g DW), hesperidin (2.97 mg/g DW), and quercetin (2.66 mg/g DW) as the major ones in the leaves, and (−)-epicatechin (2.69 mg/g DW) in the flower buds. Among the nine phenolic acids identified, rosmarinic, p-coumaric, salicylic, vanillic, and gallic acids were the best represented. All the extracts tested showed in vitro antioxidant activity that was determined by DPPH, ABTS, FRAP, and CUPRAC assays. The highest activity was recorded in the flower parts (in the range from 1133 to 4308 mmol TE/g DW). The DNA-protective capacity of the flower and stem bark extracts from the in vitro nicking assay performed, as well as the main diagnostic microscopic features of the plant substances, are given for the first time. According to the results obtained, the aerial parts of K. paniculata could be valuable sources of natural antioxidants.

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Section: Discussionmentioning

confidence: 99%

Antioxidant and DNA-Protective Potentials, Main Phenolic Compounds, and Microscopic Features of Koelreuteria paniculata Aerial Parts

et al. 2022

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“…K. paniculata has been the subject of some phytochemical studies concerning various plant extracts, such as ethanol [2,[11][12][13][14][15], methanol [1,[13][14][15], benzene/ethanol [13][14][15], and formaldehyde [13], as solvents establishing the different groups of natural components. Phenolic derivatives based on gallic acid, catechins, and phenolic acids are isolated and determined from ethanol (vacuum) extracts of fresh leaf parts [11].…”

Section: Introductionmentioning

confidence: 99%

“…In a few studies, GC-MS analysis was performed in order to identify the chemical composition of the extracts [1,[13][14][15]. The authors have analyzed several extracts of bark, wood, branches, leaves, and roots using GC-MS analysis; however, it was not implemented for the identification of the chemical composition of the plant flowers.…”

Section: Introductionmentioning

confidence: 99%

Chemical Compounds, Antitumor and Antimicrobial Activities of Dry Ethanol Extracts from Koelreuteria paniculata Laxm

Andonova

Muhovski

Fidan

et al. 2021

Plants

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Koelreuteria paniculata Laxm. is used in traditional medicine and has various established biological activities, however, the species is considered to be a potentially invasive alien tree species for Bulgarian flora. However, there is still much to be studied about the phytochemical and biological characteristics of the species. The present study aimed to determine the chemical composition of the ethanol extracts of aerial plant parts, by GC-MS analysis, and to thereby evaluate their in vitro antitumor and antibacterial properties. All three extracts were tested against the HT-29 and PC3 tumor cell lines using the MTT assay. Fifty-six components were identified from leaf, flower, and stem bark extracts, and over 10% were the following constituents: pyrogallol, α-terpinyl acetate, neryl acetate, and α-terpinyl isobutanoate. The oxygenated monoterpenes predominated in the extracts, followed by the oxygenated aliphatics and phenylpropanoids. Significant antiproliferative activity on the HT-29 cell line (IC50–21.44 µg/mL and 23.63 µg/mL, respectively) was found for the flower and leaf extracts. Antibacterial activity was established for the following bacteria strains: Bacillus subtilis ATCC 6633, Bacillus cereus NCTC 10320, Escherichia coli ATCC 8739, Pseudomonas aeruginosa ATCC 6027, and Proteus vulgaris ATCC 6380. The stem bark and flower extracts showed better antimicrobial potential. K. paniculata could be considered as a potential source of biologically active substances with antitumor and antibacterial properties.

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“…There are some drawbacks of using surfactants. They may produce foam or show noticeable change in their properties at high temperatures [29,34,45,136,138,222,223]. They may interrupt the thermal conductivity enhancement, increase thermal resistance at the particle-fluid interface [52,58,224] or influence the purity of the heat transfer medium or fluid flow [29,225].…”

Section: Surfactant Additionmentioning

confidence: 99%

“…Additionally, a comprehensive analysis of fundamental principles of nanoparticles behavior inside the basefluids is also necessary to recognize the sources of instability. Various reviews are available covering different aspects of nanofluids including preparation and characterization techniques [35][36][37][38][39][40] as well as heat transfer augmentation and its mechanisms [41][42][43][44][45][46][47][48][49][50][51][52]. Several reviews are also available presenting the wide applicability of nanofluids from industrial to biomedical applications [35,47,[53][54][55][56][57][58].…”

Section: Introductionmentioning

confidence: 99%

Stability of Heat Transfer Nanofluids – A Review

2018

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Nanofluids are suspension of highly conductive nano‐sized particles in conventional fluids that may be applicable as ultrafast cooling agent to extend the thermal performance of cooling devices. However, before considering the feasibility as coolant for high heat flux components, a thorough investigation of the long‐term stability of nanofluids is of paramount importance. Preparation of extremely stable nanofluids has become one of the main technical challenges. The present contribution aims to summarize the recent developments in the preparation, characterization, and stabilization of nanofluids based on the information available in literatures. Lastly, existing needs and attainable solution to challenges, leading to the upcoming research in the development of highly stable nanofluids, are discussed.

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Active constituents of Koelreuteria paniculata root

Cited by 7 publications

References 27 publications

Antioxidant and DNA-Protective Potentials, Main Phenolic Compounds, and Microscopic Features of Koelreuteria paniculata Aerial Parts

Antioxidant and DNA-Protective Potentials, Main Phenolic Compounds, and Microscopic Features of Koelreuteria paniculata Aerial Parts

Chemical Compounds, Antitumor and Antimicrobial Activities of Dry Ethanol Extracts from Koelreuteria paniculata Laxm

Stability of Heat Transfer Nanofluids – A Review

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