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1. Profiling and spatial distribution of phenolic compounds in rapeseed by two-step extraction strategy and targeted metabolomics combined with chemometrics

Author:
Yao Zhang; Huaming Xiao; Xin Lv; Chang Zheng; Zongyuan Wu; Nian Wang; Jie Wang; Hong Chen; Fang Wei
Source:
Food chemistry 2023 v.401 pp. 134151
ISSN:
0308-8146
Subject:
kaempferol,   etc   ; chemometrics; color; food chemistry; isorhamnetin; liquid chromatography; metabolomics; rapeseed; sinapic acid; solvents; tandem mass spectrometry;     Show all 11 Subjects
Abstract:
... In this study, a two-step extraction strategy (TSES) and targeted metabolomics combined with chemometrics was successfully applied for profiling of phenolic compounds in different colored rapeseeds. To this end, organic solvent extraction followed by deep eutectic solvent extraction made up the TSES with improved extraction coverage of free phenolics and enhanced extraction yield of conjugated phe ...
DOI:
10.1016/j.foodchem.2022.134151

2. Dissection of Moringa oleifera leaf metabolome in context of its different extracts, origin and in relationship to its biological effects as analysed using molecular networking and chemometrics

Author:
Zeinab T. Abdel Shakour; Radwa H. El-Akad; Abdelsamed I. Elshamy; Abd El-Nasser G. El Gendy; Ludger A. Wessjohann; Mohamed A. Farag
Source:
Food chemistry 2023 v.399 pp. 133948
ISSN:
0308-8146
Subject:
kaempferol,   etc   ; Moringa oleifera; amides; carotenoids; chemometrics; dietary supplements; dissection; food chemistry; glucosinolates; leaves; metabolites; metabolome; nutritive value; peptides; polyphenols; quercetin; solvents;     Show all 17 Subjects
Abstract:
... M. oleifera known as “miracle tree” is increasingly used in nutraceuticals for the reported health effects and nutritional value of its leaves. This study presents the first metabolome profiling of M. oleifera leaves of African origin using different solvent polarities via HR-UPLC/MS based molecular networking followed by multivariate data analyses for samples classification. 119 Chemicals were ch ...
DOI:
10.1016/j.foodchem.2022.133948

3. Discovery of a novel phosphotransferase from Bacillus subtilis that phosphorylates a broad spectrum of flavonoids

Author:
Chen Hsu; Hsin-Ya Tsai; Chi-Fon Chang; Chien-Chih Yang; Nan-Wei Su
Source:
Food chemistry 2023 v.400 pp. 134001
ISSN:
0308-8146
Subject:
kaempferol,   etc   ; Bacillus subtilis; apigenin; bioavailability; biosynthesis; daidzein; dietary supplements; enzymes; food chemistry; genistein; hesperetin; luteolin; moieties; naringenin; orthophosphates; phosphorylation; quercetin; regioselectivity; solubility;     Show all 19 Subjects
Abstract:
... Flavonoids are associated with health benefits, but most of them have poor oral bioavailability due to their extremely low aqueous solubility. Flavonoid O-phosphorylation suggests a potent modification to solve the problems. Here, we isolated, identified and characterized an unprecedented phosphotransferase, flavonoid phosphate synthetase (BsFPS), from B. subtilis. The enzyme catalyzes the ATP-dep ...
DOI:
10.1016/j.foodchem.2022.134001

4. Control of dry rot and resistance induction in potato tubers against Fusarium sambucinum using red onion peel extract

Author:
Elsherbiny A. Elsherbiny; Dawood H. Dawood; Mahmoud F. Elsebai; Amira Mira; Mohamed A. Taher
Source:
Postharvest biology and technology 2023 v.195 pp. 112119
ISSN:
0925-5214
Subject:
kaempferol,   etc   ; Fusarium sambucinum; catalase; catechol oxidase; ferulic acid; fungal growth; glucosides; isorhamnetin; methanol; onion peels; peroxidase; phenylalanine ammonia-lyase; potatoes; quercetin; rutin; spore germination; storage time;     Show all 17 Subjects
Abstract:
... The efficacy of red onion peel methanol extract to prevent dry rot in potato tubers caused by Fusarium sambucinum was investigated. At 20 mg mL⁻¹, the methanol extract caused a great decrease in the fungal growth and spore germination by 86.3 %, and 91.2 %, respectively. Also, the dry rot control efficacy in potato slices inoculated with F. sambucinum reached 91.8 % at the same concentration. The ...
DOI:
10.1016/j.postharvbio.2022.112119

5. Classification of Pu-erh ripened teas and their differences in chemical constituents and antioxidant capacity

Author:
Binxing Zhou; Bingsong Ma; Cunqiang Ma; Chengcheng Xu; Jiacai Wang; Ziyu Wang; Dingfang Yin; Tao Xia
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.153 pp. 112370
ISSN:
0023-6438
Subject:
kaempferol,   etc   ; antioxidant activity; antioxidants; rutin; variance;     Show all 5 Subjects
Abstract:
... For the scientific classification of Pu-erh ripened teas (PRTs), phytochemical compositions including 14 polyphenolic compounds, 2 purine alkaloids and 18 free amino acids in 24 PRTs were determined by HPLC, respectively. The in vitro antioxidant activities were evaluated by 5 various assays. PCA explaining 38.7% of total variance, HCA and OPLS-DA (R²Y = 0.887, Q² = 0.873, respectively) could clas ...
DOI:
10.1016/j.lwt.2021.112370

6. New Triterpenoid and Anti-Inflammatory Constituents of Eriobotrya deflexa f. deflexa

Author:
Hui-Ming Chen; Chien-Ming Huang; Li-Chai Chen; Chang-Syun Yang; Tsung-Hsien Chang; Chun-Lin Chen; Ping-Jyun Sung; Wen-Lung Kuo; Ming-Jen Cheng; Jen-Wen Hsiao; Jih-Jung Chen
Source:
Chemistry of natural compounds 2022 v.58 no.3 pp. 496-500
ISSN:
0009-3130
Subject:
kaempferol,   etc   ; Eriobotrya deflexa; chemistry; naringenin; quercetin; spectroscopy; ursolic acid;     Show all 7 Subjects
Abstract:
... A new triterpenoid, methyl 2α-(4-hydroxybenzoyl)oxy-3β-hydroxy-urs-12-en-28-oate (1), has been isolated from the leaves of Eriobotrya deflexa f. deflexa, together with five known compounds, quercetin (2), kaempferol 3-O-β-glucoside (3), naringenin (4), ursolic acid (5), and euscaphic acid (6). The structure of new compound 1 was determined through spectroscopic and MS analyses. Among the isolates, ...
DOI:
10.1007/s10600-022-03718-6

7. An emerging strategy for tracing the anti‐erectile dysfunction components of raw and salt‐processed semens of Astragali Complanati by combinatory liquid chromatography–mass spectrometry‐based quantitative analysis, efficacy assessment on impotent rats, and partial least squares regression

Author:
Jun Chen; Fei Zhu; Meiling Pan; Qing Liu; Lin Chen; Yi Tao
Source:
Journal of separation science 2022 v.45 no.11 pp. 1952-1959
ISSN:
1615-9306
Subject:
kaempferol,   etc   ; chloramphenicol; liquid chromatography; mass spectrometry; quantitative analysis; separation;     Show all 6 Subjects
Abstract:
... Semens of Astragali Complanati own anti‐erectile dysfunction effect; however, the components which contribute to the anti‐erectile dysfunction effect remain unclear. This work raised a strategy that integrates liquid chromatography coupled mass spectrometry‐based quantitative analysis, anti‐erectile dysfunction assessment on impotent rats, and their relationship analysis for pinpointing anti‐erect ...
DOI:
10.1002/jssc.202200019

8. Flavonoid glycosides from Hylotelephium sieboldii var. sieboldii and var. ettyuense endemic to Japan

Author:
Tsukasa Iwashina; Masashi Nakata; Takahisa Nakane; Takayuki Mizuno
Source:
Biochemical systematics and ecology 2022 v.105 pp. 104505
ISSN:
0305-1978
Subject:
kaempferol,   etc   ; Hylotelephium; Japan; acid hydrolysis; chemotaxonomy; ecology; glycosides; quercetin; surveys;     Show all 9 Subjects
Abstract:
... Twenty-one flavonoids were isolated from the leaves and stems of Hylotelephium sieboldii var. sieboldii and var. ettyuense (Crassulaceae) endemic to Japan. They were characterized as kaempferol and quercetin glycosides such as 3-O-sophorosides, 3-O-neohesperidosides, 3,7-di-O-rhamnosides, 3-O-neohesperidoside-7-O-rhamnosides, 3-O-glucoside-7-O-rhamnosides, 3-O-sophoroside-7-O-rhamnosides, 3-O-gluc ...
DOI:
10.1016/j.bse.2022.104505

9. Kaempferol rhamnoside catabolism in rosette leaves of senescing Arabidopsis and postharvest stored radish

Author:
Nicole Unterlander; Lili Mats; Laura C. McGary; Harley O. W. Gordon; Gale G. Bozzo
Source:
Planta 2022 v.256 no.2 pp. 36
ISSN:
0032-0935
Subject:
kaempferol,   etc   ; Arabidopsis thaliana; Raphanus sativus; biosynthesis; catabolism; leaves; metabolites; radishes;     Show all 8 Subjects
Abstract:
... Flavonol rhamnosides including kaempferitrin (i.e., kaempferol 3-O-α-rhamnoside-7-O-α-rhamnoside) occur throughout the plant kingdom. Mechanisms governing flavonol rhamnoside biosynthesis are established, whereas degradative processes occurring in plants are relatively unknown. Here, we investigated the catabolic events affecting kaempferitrin status in the rosette leaves of Arabidopsis thaliana L ...
DOI:
10.1007/s00425-022-03949-5

10. Saffloflavone, a new flavonoid from the flowers of Carthamus tinctorius L. and its cardioprotective activity

Author:
Meng-na Wang; Yan-gang Cao; Ya-xin Wei; Ying-jie Ren; Yan-ling Liu; Xu Chen; Chen He; Xiao-ke Zheng; Wei-sheng Feng
Source:
Natural product research 2022 v.36 no.13 pp. 3317-3323
ISSN:
1478-6427
Subject:
kaempferol,   etc   ; Carthamus tinctorius; cardioprotective effect; oxidative stress; research; spectral analysis;     Show all 6 Subjects
Abstract:
... A new flavonoid, saffloflavone , along with six known compounds, kaempferol-3-O-rutinoside, kaempferol-3-O-sophoroside, quercetin-3-O-β-d-glucoside, quercetin-7-O-β-d-glucoside, luteolin-7-O-β-d-glucoside and kaempferol 3-O-β-d-glucoside were isolated from the flowers of Carthamus tinctorius L. All the structures were determined by interpretation of their spectroscopic data. The cardioprotective e ...
DOI:
10.1080/14786419.2020.1855167

11. Integrating bioclimatic factors and secondary metabolism to predict the suitable producing area of plants with high specific metabolite content in a real-world environment - a case of Carthamus tinctorius L.

Author:
Tiexin Zeng; Xiao Sun; Yujing Miao; Shengjiu Gu; Lixia Tian; Yan Zheng; Yuan Jiang; Xinke Zhang; Zhan Feng; Jin Pei; Linfang Huang
Source:
Industrial crops and products 2022 v.177 pp. 114545
ISSN:
0926-6690
Subject:
kaempferol,   etc   ; Carthamus tinctorius; metabolism; metabolome; secondary metabolites; temperature; China; France;     Show all 8 Subjects
Abstract:
... The secondary metabolism of plants is greatly influenced by bioclimatic factors. Few studies on comprehensive ecometabolomics responses to bioclimatic factors in the real-world environment have been reported. As a case of safflower (Carthamus tinctorius L.) with a high flavonoid content, we combined bioclimatic factors, a widely targeted metabolome, and weighted metabolite coresponse network analy ...
DOI:
10.1016/j.indcrop.2022.114545

12. Comparative analysis of flavonoids in white and red table grape cultivars during ripening by widely targeted metabolome and transcript levels

Author:
Hui Xia; Xuefeng Zhang; Yanqiu Shen; Yuqi Guo; Tong Wang; Jin Wang; Lijin Lin; Honghong Deng; Qunxian Deng; Kunfu Xu; Xiulan Lv; Dong Liang
Source:
Journal of food science 2022 v.87 no.4 pp. 1650-1661
ISSN:
0022-1147
Subject:
kaempferol,   etc   ; anthocyanidins; anthocyanins; cultivars; fruiting; metabolites; metabolome; quercetin; ripening; table grapes;     Show all 10 Subjects
Abstract:
... The flavonoid metabolites were compared between red ‘Summer Black’ (SB) and white ‘Shine Muscat’ (SM) table grapes during fruit development based on widely targeted metabolome. A total of 134 flavonoids were identified in two cultivars, including 37 flavones, 33 flavonols, and 11 anthocyanidins, and so on. From young to veraison, the composition and the content of most flavonoids were decreasing i ...
DOI:
10.1111/1750-3841.16117

13. Phenolic profile and antioxidant activity of Euonymus japonicus Thunb.

Author:
Alba Ruiz-Riaguas; M. L. Fernández-de Córdova; Eulogio J. Llorent-Martínez
Source:
Natural product research 2022 v.36 no.13 pp. 3445-3449
ISSN:
1478-6427
Subject:
kaempferol,   etc   ; Euonymus japonicus; antioxidant activity; diodes; glycosides; leaves; methanol; quercetin; research;     Show all 9 Subjects
Abstract:
... The aim of this study was to characterise the phenolic profile and evaluate the antioxidant activity of aqueous and methanol leaf extracts from Euonymus japonicus Thunb., a species of flowering plant in the Celastraceae family. Liquid chromatography (HPLC) with diode array and electrospray-tandem mass spectrometry (DAD-ESI-MSⁿ) detection was used to characterise and quantify phenolic compounds. Th ...
DOI:
10.1080/14786419.2020.1855641

14. Changes in Phenolic Profile and Antioxidant Activity of Horseradish Roots During Freezing and Frozen Storage

Author:
Lolita Tomsone; Ruta Galoburda; Zanda Krūma; Ingmārs Cinkmanis
Source:
Proceedings of the Latvian Academy of Sciences 2022 v.76 no.1 pp. 103-109
ISSN:
2255-890X
Subject:
kaempferol,   etc   ; antioxidant activity; frozen storage; horseradish; liquid chromatography; luteolin; phenolic acids; rutin;     Show all 8 Subjects
Abstract:
... Freezing is one of the ways to preserve plant products, because it allows inhibiting natural degradation and transformation processes of the bioactive compounds. The aim of this study was to evaluate the effect of freezing on bioactive compounds of horseradish roots and their dynamics in long-term frozen storage. Horseradish roots were frozen at two different conditions (–18±2°C and –40 ± 2 °C) an ...
DOI:
10.2478/prolas-2022-0016

15. Production of Flavonoid 7-O-glucosides by Bioconversion Using Escherichia coli Expressing a 7-O-glucosyltransferase from Tobacco (Nicotiana tabacum)

Author:
Nasanjargal Dorjjugder; Goro Taguchi
Source:
Applied biochemistry and biotechnology 2022 v.194 no.7 pp. 3320-3329
ISSN:
0273-2289
Subject:
kaempferol,   etc   ; Escherichia coli; Nicotiana tabacum; apigenin; biotechnology; biotransformation; luteolin; naringenin; quercetin; tobacco;     Show all 10 Subjects
Abstract:
... Flavonoid 7-O-glucosides exhibit various biological activities; however, some are not abundant in nature. Therefore, a method to produce flavonoid 7-O-glucosides was investigated. Escherichia coli expressing tobacco-derived glucosyltransferase (Ec-NtGT2) converted several flavonoids (apigenin, luteolin, quercetin, kaempferol, and naringenin) to their 7-O-glucosides with conversion rates of 67–98%. ...
DOI:
10.1007/s12010-022-03880-1

16. Joint effects and mechanisms of luteolin and kaempferol on toxigenic Microcystis growth—Comprehensive analysis on two isomers interaction in binary mixture

Author:
Jieming Li; Linrong Cao; Zhonghui Guo
Source:
Journal of environmental management 2022 v.312 pp. 114904
ISSN:
0301-4797
Subject:
kaempferol,   etc   ; Microcystis; algicides; allelochemicals; antioxidant activity; growth retardation; luteolin; microcystins; photosynthesis; pollution; toxicity;     Show all 11 Subjects
Abstract:
... Allelochemicals are widely accepted as promising algaecide to mitigate Microcystis-dominated cyanobacterial blooms (MCBs). Allelopathic algicidal effect of single luteolin or kaempferol against Microcystis had been confirmed, but their joint effect against Microcystis was unclear. This study comprehensively explored time-dependent joint effect and mechanisms of luteolin and kaempferol on Microcyst ...
DOI:
10.1016/j.jenvman.2022.114904

17. A New Sesquiterpene Glycoside from Leaves of Bombax ceiba

Author:
Hoang-Thuy-Tien Le; Thuc-Huy Duong; Quyen-Thien-Phuc Tran; Nguyen-Kim-Tuyen Pham; Ngoc-Hong Nguyen; Minh-Hiep Dinh; Van-Son Dang; Jirapast Sichaem
Source:
Chemistry of natural compounds 2022 v.58 no.5 pp. 853-856
ISSN:
0009-3130
Subject:
kaempferol,   etc   ; Bombax ceiba; Staphylococcus aureus; antibacterial properties; chemistry; glycosides; naringenin; procyanidins; quercetin; sesquiterpenoids;     Show all 10 Subjects
Abstract:
... A new sesquiterpene glycoside, ceibanoside (1), was isolated from the leaves of Bombax ceiba, together with the previously-reported quercetin (2), kaempferol (3), naringenin (4), (+)-epicatechin (5), and procyanidin B2 (6). The structure of the new sesquiterpene glycoside was elucidated using chemical and physical evidence. Compound 2 showed antibacterial activity against Staphylococcus aureus, pr ...
DOI:
10.1007/s10600-022-03815-6

18. Protein tyrosine phosphatase 1B inhibitory activity of compounds from Justicia spicigera (Acanthaceae)

Author:
Araceli Pérez-Vásquez; Miriam Díaz-Rojas; Erika V. Castillejos-Ramírez; Alejandra Pérez-Esquivel; Yullet Montaño-Cruz; Isabel Rivero-Cruz; Rafael Torres-Colín; Martin González-Andrade; Rogelio Rodríguez-Sotres; José Alberto Gutiérrez-González; Abraham Madariaga-Mazón; Rachel Mata
Source:
Phytochemistry 2022 v.203 pp. 113410
ISSN:
0031-9422
Subject:
kaempferol,   etc   ; Justicia spicigera; active sites; diabetes; kinetics; ligands; protein-tyrosine-phosphatase; spectroscopy; stoichiometry;     Show all 9 Subjects
Abstract:
... An infusion from the aerial parts of Justicia spicigera Schltdl., an herb commonly used to treat diabetes, inhibited the activity of protein tyrosine phosphatase 1B (PTP1B). Two undescribed compounds, 2-N-(p-coumaroyl)-3H-phenoxazin-3-one, and 3″-O-acetyl-kaempferitrin, along with kaempferitrin, kaempferol 7-O-α-L-rhamnopyranoside, perisbivalvine B and 2,5-dimethoxy-p-benzoquinone were isolated fr ...
DOI:
10.1016/j.phytochem.2022.113410

19. Accumulation of isoflavonoids in Lotus corniculatus after UV-B irradiation

Author:
Mária Kaducová; Adriana Eliašová; Kristina Trush; Michaela Bačovčinová; Katarína Sklenková; Peter Pal’ove-Balang
Source:
Theoretical and Experimental Plant Physiology 2022 v.34 no.1 pp. 53-62
ISSN:
2197-0025
Subject:
kaempferol,   etc   ; Lotus corniculatus; biochanin A; biosynthesis; forage; glycosides; irradiation; oxidoreductases; plant physiology; proanthocyanidins;     Show all 10 Subjects
Abstract:
... HPLC profiles of plant defensive compounds, isoflavonoids and flavonoids, were evaluated in the frequently cultivated forage species, Lotus corniculatus, as well as their changes after UV-B irradiation. The predominant flavonoid glycosides are kaempferol 3,7-di-O-rhamnoside together with its malonylated derivative. UV-B irradiation led to a strong increase of vestitol, but the condensed tannin and ...
DOI:
10.1007/s40626-021-00228-8

20. Photophysical Behavior of Plant Flavonols Galangin, Kaempferol, Quercetin, and Myricetin in Homogeneous Media and the DMPC Model Membrane: Unveiling the Influence of the B-Ring Hydroxylation of Flavonols

Author:
Anand Kumar Sahu; Ashok Kumar Mishra
Source:
Journal of physical chemistry 2022 v.126 no.15 pp. 2863-2875
ISSN:
1520-5207
Subject:
kaempferol,   etc   ; anisotropy; antioxidant activity; fluorescence; hydroxylation; membrane fluidity; myricetin; phase transition; quercetin; solvents;     Show all 10 Subjects
Abstract:
... Flavonols have been studied extensively because of their interesting biological activities and excited-state intramolecular proton transfer (ESIPT) behavior. Galangin, kaempferol, quercetin, and myricetin are structurally related flavonols that differ only in the number of B-ring hydroxyl substituents. In this work, we have carried out a detailed study on the photophysical behavior of these struct ...
DOI:
10.1021/acs.jpcb.2c00929