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Registros recuperados: 9
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Acylated anthocyanins from organic purple-fleshed sweet potato (Ipomoea batatas (L.) Lam) produced in Brazil Scientia Agricola
Jesus,Monalisa Santana Coelho de; Santiago,Manuela Cristina Pessanha de Araújo; Pacheco,Sidney; Gouvêa,Ana Cristina Miranda Senna; Nascimento,Luzimar da Silva de Mattos do; Borguini,Renata Galhardo; Guerra,José Guilherme Marinho; Espindola,José Antonio Azevedo; Godoy,Ronoel Luiz de Oliveira.
ABSTRACT Acylated anthocyanins from a purple-fleshed sweet potato (PFSP), obtained by organic cultivation in Brazil, were characterized after separation by a high performance liquid chromatography-diode array detector (HPLC-PDA). These anthocyanins were manually collected at the detector output, concentrated and injected into a high resolution mass spectrometer (ESI-QTOF-MS2). Twenty-two acylated anthocyanins were detected. Among them, sixteen had been reported in the literature and six, derived from peonidin were reported for the first time in sweet potato roots in this study. These compounds showed molecular ions with accurate mass/charge ratios (m/z) of 909.2081, 961.3010, 961.2571, 963.3345, 1123.2932 and 1179.3862. Although anthocyanins in PFSP have...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic; Mass spectrometry; Natural dye; Antioxidant.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000400901
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Allelopathic effects of Rhynchosia capitata on germination and seedling growth of mungbean Planta Daninha
Ali,H.H.; Tanveer,A.; Nadeem,M.A.; Javaid,M.M.; Kashif,M.S.; Chadhar,A.R..
Experiments were conducted to evaluate the allelopathic influence of Rhynchosia capitata on germination and seedling growth of mungbean (Vigna radiate) along with identification of the phytotoxic substances responsible for this activity. Water extracts of root, shoot, leaf, fruit and whole plant were prepared by soaking them in water in a ratio of 1:20 (w/v) for 24 h. All the extracts affected germination and seedling growth of mungbean, but higher inhibition was seen with R. capitata leaf water extracts. A linear decrease in the germination characteristics of mungbean was observed with the decrease in the concentration of leaf extract from 5% to 1%. The soil-incorporated residues (1-4% w/w) of R. capitata stimulated the growth of root and hypocotyl at low...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytotoxic; Phenolic; Allelopathy; Residues; Concentration; Water extracts.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300002
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Antibacterial activity tannin-rich fraction from leaves of Anacardium humile Ciência Rural
Ferreira,Peracio Rafael Bueno; Mendes,Cíntia Sorandra Oliveira; Rodrigues,Cínthia Gracielly; Rocha,Juliane Caroline Moura; Royo,Vanessa de Andrade; Valério,Henrique Maia; Oliveira,Dario Alves de.
In vitro tests conducted with extracts rich in tannins have identified several biological activities of this class of substance. Thus, this paper intends to evaluate the antibacterial activity of tannin-rich fraction obtained from leaf extracts of Anacardium humile A.St.-Hil. Extracts of A. humile leaves in 70% acetone were semi-purified with ethyl acetate and butanol. We quantified the total tannins of the semi-purified fractions, of the crude extract and of aqueous residues and then performed tests of the antibacterial activity of the tannins against Staphylococcus aureus ATCC 6538, Pseudomonas aeruginosa ATCC 27853 and Enterococcus faecalis ATCC 29212. All positive extracts underwent tannin isolation using a Sephadex LH-20 column. The tannins isolated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic; Cajuí; Antibacterial; MIC; MBC; Sephadex LH-20.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012001000023
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Bioactive Compounds and Antioxidant Activity in Leaves of Endemic and Native Isatis spp in Turkey BABT
Comlekcioglu,Nazan.
Abstract This study was undertaken to evaluate the health-promoting potentials of Isatis aucherii, Isatis buschiana, Isatis candolleana, Isatis tinctoria subsp. corymbosa and Isatis tinctoria. I. aucherii and I. candolleana are endemic, I. buschiana, I. tinctoria subsp. corymbosa are native in Turkey. While I. tinctoria is a well studied species, there is insufficient information about other endemic and native species. Therefore, this study is focused to reveal the bioactive compounds of poorly studied endemic and native species. In this context, protein, ash, glucosinolates, fatty acids, total phenolic and flavonoid content, and antioxidant activities were determined in leaf extracts. The highest protein and fatty oil contents were observed in I....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidant activity; Fatty acids; Flavonoid; Glucosinolate; Isatis; Phenolic.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100411
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Chemical composition and antifungal activity of propolis on Aspergillus flavus. Repositório Alice
LORINI, A.; WOBETO, C.; BONALDO, S. M.; BOTELHO, S. de C. C.; SINHORIN, A. P..
Research has indicated the antifungal activity of ethanol extracts from propolis (EEP) on fungi of the genera Phakopsora, Colletotrichum, and Cercospora. Here, chemical compositions and antioxidant activity of three EEP (propolis from Scaptotrigona polysticta stingless bee and two types produced by Apis mellifera - red and brown) were evaluated and their action against Aspergillus flavus was investigated. Ash, dry extract, total phenolic and total flavonoid contents were determined. Phenolic composition was evaluated by high performance liquid chromatography, with using the following reference substances: gallic acid, caffeic acid, ρ-coumaric acid, ferulic acid, quercetin, kaempferol, and apigenin. Tests on mycelial growth, sporulation, and...
Tipo: Artigo de periódico Palavras-chave: Apis melífera; Phenolic; Fungitoxicity; Scaptotrigona polysticta; Composição Química; Aspergillus Flavus.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098965
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Effect of Blanching on Enzyme Activity and Bioactive Compounds of Blackberry BABT
Noreña,Caciano Zapata; Rigon,Renata Trindade.
ABSTRACT The inactivation of peroxidase and polyphenol oxidase and the degradation of phenolic compounds, anthocyanins, and antioxidant activity in blackberry were investigated during blanching in water at 80-90 °C, and in steam, from 0 to 10 minutes. The enzyme kinetics indicated the presence of two isoenzymes with different thermal stability, following two-phase model, in which the reaction rate constant increased with increasing temperature for both the heat labile and heat resistant component. The phenolic compounds also followed a biphasic pattern, indicating a more heat resistant fraction, and the rate constants increased with increasing temperature. For the antioxidant activity and anthocyanins, the first order kinetic model (R2>0.982) indicated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Peroxidase; Polyphenol oxidase; Phenolic; Anthocyanins.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100501
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Nutrients and bioactive compounds of pulp, peel and seed from umbu fruit Ciência Rural
Ribeiro,Leilson de Oliveira; Viana,Eliseth de Souza; Godoy,Ronoel Luiz de Oliveira; Freitas,Sidinea Cordeiro de; Freitas,Suely Pereira; Matta,Virgínia Martins da.
ABSTRACT: The objective of this research was to evaluate the nutritional composition and bioactive compounds of whole umbu fruit, including pulp, seed and peel, and also of a commercial umbu pulp. Samples of the fractions and of commercial pulp were analyzed for determination of minerals and proximate composition, total phenolic and antioxidant activity. Pulps and peel were also analyzed for vitamin C and carotenoids contents. Commercial pulp presented better nutritional composition than fresh pulp (P<0.05) and the peel presented higher phenolic content and antioxidant activity than seed. Peel also stood out by its vitamin C (79 mg.100 g-1) and total carotenoids (2,751 µg.100 g-1) contents, showing that, as the main barrier of the fruit for its...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spondias tuberosa Arruda Câmara; Phenolic; Carotenoid; ABTS assay.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000400752
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Total phenolic, flavonoid, alkaloid and iridoid content and preventive effect of Lider-7-tang on lipopolysaccharide-induced acute lung injury in rats BJMBR
Erdenechimeg,Ch.; Guiqide,A.; Dejidmaa,B.; Chimedragchaa,Ch.; Purevsuren,S..
Lider-7-tang, a medicine used for the treatment of respiratory diseases especially pneumonia and fever in Mongolian Traditional Medicine, was selected for this phytochemical and pharmacological study. The objectives of the study were to determine total biological active substances and analyze the effects of Lider-7-tang treatment in rats with acute lung injury (ALI). Quantitative determination of the total active constituents (phenolic, flavonoid, iridoid and alkaloid) of the methanol extract of Lider-7-tang was performed using Folin-Ciocalteu reagent, aluminum chloride reagent, Trim-Hill reagent, and Bromocresol green reagent, respectively. A total of fifty 8–10-week-old male Wistar rats (200–240 g) were randomized into three groups: control group,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Traditional medicine; Lider-7-tang; Phenolic; Acute lung injury; Lipopolysaccharide.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200609
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การทดสอบความชอบในการเข้าทำลายของด้วงงวงมันเทศ (Cylas formicarius F.) บนมันเทศพันธุ์ต่างๆ Thai Agricultural
Jarongsak Pumnuan; On-uma Rungnoi; Lampan Khurnpoon.
Damaging observation in term of preference of sweet potato weevil (Cylas formicarius F.) on 219 varieties of sweet potato was conducted at Pijit Agricultural Research and Development Center, Pijit province, as well as laboratory preference test using no choice method, the relationship among infestation level, sweet potato color, %dried weight latex, %dried weight tube and containing of phenolic compound were also conducted. The result showed that, the sweet potato weevil infested various colors of sweet potatoes with non-statistically significant differences at 95%. Out of 14 varieties were infested with low level, less than 37.5%, such as Edok, Triyoke, Pakan-2, Khai Trad, Khai Nakorn-2, Kanlasin, Lheungbanlung, Khai Chaingmai, Banyang, Banyang-9, S0183,...
Tipo: Collection Palavras-chave: Sweet potato; Sweet potato weevil; Latex; Phenolic; Resistant; มันเทศ; แมลงศัตรูพืช; ด้วงงวงมันเทศ; ฟีนอลิก; ความต้านทานต่อแมลง; น้ำหนักน้ำยางแห้ง; การเข้าทำลาย; สีของหัวมันเทศ; น้ำหนักหัวมันแห้ง; การปรับปรุงพันธุ์; พันธุ์.
Ano: 2011 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5161
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