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Air-drying temperature changes the content of the phenolic acids and flavonols in white mulberry (Morus alba L.) leaves Ciência Rural
Przeor,Monika; Flaczyk,Ewa; Beszterda,Monika; Szymandera-Buszka,Krystyna Eleonora; Piechocka,Justyna; Kmiecik,Dominik; Szczepaniak,Oskar; Kobus-Cisowska,Joanna; Jarzębski,Maciej; Tylewicz,Urszula.
ABSTRACT: The white mulberry leaves are typically available on the market in dried or encapsulated form. It was assumed in the study that appropriate drying of leaves of the white mulberry is significant for obtaining intermediate products with high content of compounds having anti-oxidative activity. The purpose of the study was to determine the influence of the temperature of mulberry leaves air drying on the content of phenolic acids and flavonols. It has been determined that the content of these compounds in the leaves depended on the drying temperature. Drying at 60 °C favored release of phenolic acids and flavonols from complexes and/or formation of new compounds. Their total content was 22% higher than in leaves dried at 30 °C. Drying at 90 °C...
Tipo: Info:eu-repo/semantics/article Palavras-chave: White mulberry leaves; Air-drying temperature; Phenolic acids; Flavonols; Morus alba L.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001100754
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Allelopathic effect of black mustard tissues and root exudates on some crops and weeds Planta Daninha
Al-Sherif,E; Hegazy,A.K.; Gomaa,N.H.; Hassan,M.O..
Laboratory and greenhouse experiments were conducted to evaluate the phytotoxic effect of black mustard extracts and root exudates on two crops: Trifolium alexandrinum and Triticum aestivum, and two weeds: Phalaris paradoxa and Sisymbrium irio. The seeds were treated with aqueous and ethanolic extracts and chloroform for eight days, or subjected to root exudates of just harvested mustard in a greenhouse for five weeks. High-performance liquid chromatography (HPLC) was used to quantify phytotoxins from plant tissues. Seed germination of P. paradoxa was reduced with the lowest concentration of the different extracts. However, the aqueous extract at 4% completely curtailed the germination of all the target species. In general, plant extracts had a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allelopathy; Brassica nigra; Plant extracts; Isothiocyanates (ITCs); Phenolic acids.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000100002
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Allelopathy and Allelochemicals of Eragrostis plana (Poaceae) and its Relation with Phenology and Nitrogen Fertilization Planta Daninha
CECCHIN,K.; FAVARETTO,A.; SCHEFFER-BASSO,S.M.; BERTOL,C.D.; CHINI,S.O..
ABSTRACT This study was conducted in order to verify if the phenological stage and the nitrogen fertilization interfere in the allelopathic activity and in the concentration of potentially allelopathic phenolic compounds of tough lovegrass (Eragrostis plana). The assay consisted of a bifactor 3 (0.100 and 200 kg N ha-1) x 2 (harvested in vegetative and reproductive stages), in a split plot design. The N doses constituted the main plot and the phenological stage during the harvest the subplots, resulting in six treatments. The tough lovegrass plants derived from each of the treatments were subjected to allelopathy bioassays, in which aqueous extracts of the aerial parts were applied to lettuce cypselae (Lactuca sativa) and to phytochemicals tests when...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Germinability; Phenolic acids; Catechin; Epicatechin.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100222
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Antioxidant potential of various solvent extract from Morus alba fruits and its major polyphenols composition Ciência Rural
Kobus-Cisowska,Joanna; Szczepaniak,Oskar; Szymanowska-Powałowska,Daria; Piechocka,Justyna; Szulc,Piotr; Dziedziński,Marcin.
ABSTRACT: Extraction conditions are an important factor in the process of obtaining bioactive compounds from plant matrix. These compounds differ structurally. Structures of phyto-compounds and their interactions with other food ingredient are not fully known, while these two aspects should play a significant role in extrahents choice and determination of extraction process conditions. Mulberry (Morus alba) is a plant growing in Asia, which fruits are rich in bioactive ingredients and high anti-oxidative potential. In our study we analyzed mulberry fruits extracts differing in the extra hent applied: acetone, methanol, ethanol and water. All tested extracts possessed rich polyphenolic composition and radical scavenging ability. The significant differences...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morus alba; Antioxidants; Phenolic acids; Flavonoids.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100751
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Chemical composition and antioxidant capacity of coffee pulp Ciência e Agrotecnologia
Ameca,Graciela Munguía; Cerrilla,María Esther Ortega; Córdoba,Pedro Zetina; Cruz,Antonio Díaz; Hernández,Marcos Soto; Haro,José Herrera.
ABSTRACT Coffee pulp is produced in large quantities, and its disposal can pollute the environment. However, the nutritional value and antioxidant content of coffee pulp make it a good option for animal feed. Therefore, the objective of this study was to determine the chemical composition, the phenolic compounds and the antioxidant capacity of coffee pulp using fresh (FCP), ensiled (ECP), and ensiled and sun-dried (EDCP) coffee pulp. The study design was completely randomized with three treatments (n=4). Dry matter (DM), crude protein (CP), ash, acid detergent fiber (ADF), neutral detergent fiber (NDF), lignin, phenolic compounds and antioxidant capacity were determined. Data were analyzed by analysis of variance, and means were compared with the Tukey...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic acids; Caffeine in coffee pulp; Ethanol silage.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000300307
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Chemical markers and antifungal activity of red propolis from Sergipe, Brazil Ciênc. Tecnol. Aliment.
Mendonça,Lucyana Santos de; Mendonça,Flávia Manuella Ribeiro de; Araújo,Yzila Liziane Farias Maia de; Araújo,Edilson Divino de; Ramalho,Suyare Araújo; Narain,Narendra; Jain,Sona; Orellana,Sara Cuadros; Padilha,Francine Ferreira; Cardoso,Juliana Cordeiro.
The aim of this study was to analyze the physicochemical properties and antifungal activities of the red propolis samples from Sergipe, Brazil, and also evaluate their variability throughout the year. The characterization of the hydroalcoholic extract (HPE) of the red propolis samples was performed monthly from October 2009 to September 2010. The concentrations of the bioactive compounds varied during the year, but their chromatographic profiles were similar. Four compounds were identified by comparison with authentic standards. Formononetin was one of the predominant compounds in all propolis extracts. In our study, it was observed that all the propolis samples inhibited the growth of Candida species. Multivariate analysis confirmed the variations in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Flavonoids; Phenolic acids; Formononetin; Seasonality.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000200291
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Chlorogenic acid concentration in Brazilian carrots cultivars. Repositório Alice
MALDONADE, I. R.; CARVALHO, A. D. F. de; COELHO, L. F. S.; RIBEIRO, R. L. V..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Phenolic acids; Cross-breeding; Antioxidant.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1035782
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Composition of polyphenols of asparagus spears (Asparagus officinalis) and their antioxidant potential Ciência Rural
Kobus-Cisowska,Joanna; Szymanowska,Daria; Szczepaniak,Oskar Marek; Gramza-Michałowska,Anna; Kmiecik,Dominik; Kulczyński,Bartosz; Szulc,Piotr; Górnaś,Paweł.
ABSTRACT: The aim of this study was to examine the impact of cultivar and spear color on the composition of polyphenols in asparagus spears (Asparagus officinalis). The five genotypes (Schwetzinger Meisterschuss, Huchel’s Alpha, Gijnlim, Grolim and Eposs) and three growing conditions of asparagus spears (Asparagus officinalis) were investigated. The polyphenols were determined by applying the HPLC-DAD system. The obtained results were subjected to the principal component analysis. Among the analyzed asparagus samples cv. Grolim contained the highest amounts of phenolic acids and flavonols. The varied quantitative and qualitative composition of polyphenolics resulted most probably from changes occurring during vegetation, such as a lack of access to light...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asparagus cultivars; Antioxidative activity; Flavonols; Phenolic acids; Polyphenols.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000400751
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Conversion of hydroxycinnamic acids into volatile phenols in a synthetic medium and in red wine by Dekkera bruxellensis Ciênc. Tecnol. Aliment.
Cabrita,Maria João; Palma,Vera; Patão,Raquel; Freitas,Ana Maria Costa.
The conversion of p-coumaric acid, ferulic acid, and caffeic acid into 4-ethylphenol, 4-ethylguaiacol and 4-ethylcatechol was studied in Dekkera bruxellensis ISA 1791 under defined conditions in a synthetic medium and in a red wine. Liquid chromatography (HPLC-DAD) was used to quantify the phenolic acids, and gas chromatography (GC) coupled to a FID detector was used to quantify volatile phenols using a novel analytical methodology that does not require sample derivatization. Identification was achieved by gas chromatography-mass detection (GC-MS). The results show that phenolic acids concentration decreases while volatile phenols concentration increases. The proportion of caffeic acid taken up by Dekkera bruxellensis is lower than that for p-coumaric or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic acids; Volatile phenols; 4-ethylcatechol; Red wine.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100016
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Dry fruit as source of fungal contaminants or functional compounds? Ciênc. Tecnol. Aliment.
HARTWIG,Naralice; FERREIRA,Cláudia Fetter Jorge; COLAZZO,Carolina Carvalho; KUPSKI,Larine; BADIALE-FURLONG,Eliana.
Abstract This study evaluated the role of dry fruits as a source of fungal contaminants or functional compounds. Dry apple, apricot, candied fruits, prune, and white and black raisin were evaluated regarding patulin and ergosterol content, centesimal composition, pH, acidity, pectin, and phenolic profile. The ergosterol was detected in 38% of the samples and patulin (PAT) in 89%, the apricot samples stood out most by contaminant level. Apricot, candied fruit, and prunes presented moisture values beyond the other dry fruits. The pH ranged from 3.8 to 4.6; acidity from 0.1 to 1.0%; sugar content from 1.7 to 5.5%; and levels of soluble and insoluble pectin from 1.6 to 5.1% and 10.9% to 27.3%, respectively. The apples showed a higher content of free phenolic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ergosterol; Patulin; Pearson correlation; Phenolic acids; Pectin.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020000100076
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Effect of chlorocholine chlorid on phenolic acids accumulation and polyphenols formation of buckwheat plants Biol. Res.
Sytar,Oksana; Borankulova,Asel; Hemmerich,Irene; Rauh,Cornelia; Smetanska,Iryna.
BACKGROUND: Effect of chlorocholine chloride (CCC) on phenolic acids composition and polyphenols accumulation in various anatomical parts (stems, leaves and inflorescences) of common buckwheat (Fagopyrum esculentum Moench) in the early stages of vegetation period were surveyed. RESULTS: Treatment of buckwheat seeds with 2% of CCC has been increased content of total phenolics in the stems, leaves and inflorescences. On analyzing the different parts of buckwheat plants, 9 different phenolic acids - vanilic acid, ferulic acid, trans-ferulic acid, chlorogenic acid, salycilic acid, cinamic acid, p-coumaric acid, p-anisic acid, methoxycinamic acid and catechins were identified. The levels of identified phenolic acids varied not only significantly among the plant...
Tipo: Journal article Palavras-chave: Chlorocholine chloride; Phenolic acids; Catechins; Buckwheat.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100019
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Effects of phenolic compounds in propolis on digestive and ruminal parameters in dairy cows R. Bras. Zootec.
Aguiar,Sílvia Cristina de; Paula,Eduardo Marostegan de; Yoshimura,Emerson Henri; Santos,Wallacy Barbacena Rosa dos; Machado,Erica; Valero,Maribel Velandia; Santos,Geraldo Tadeu dos; Zeoula,Lucia Maria.
Four rumen-cannulated primiparous lactating cows were studied in a 4 × 4 Latin square design experiment to evaluate the effects of propolis-based products (PBP) with different concentrations of propolis and alcohol levels on total digestibility, (TD), ruminal digestibility (RD), intestinal digestibility (ID), pH, ruminal ammonia-nitrogen production (NH3-N), rumen microbial synthesis, and blood parameters. The feed consisted of 591.9 g/kg corn silage and 408.1 g/kg concentrate (dry matter [DM] basis), and treatments differed with regard to the inclusion (via ruminal cannula) or exclusion of PBP as follows: control (without the PBP), PBP B1 (3.81 mg of phenolic compounds/kg of ingested DM), PBP C1 (3.27 mg of phenolic compounds/kg of ingested DM), and PBP C3...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Additive; Ammonia nitrogen; Flavonoids; Phenolic acids; Ruminants.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000400197
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Enzyme-assisted extraction of phenolics from winemaking by-products: Antioxidant potential and inhibition of alpha-glucosidase and lipase activities. Repositório Alice
CAMARGO, A. C. de; REGITANO-D?ARCE, M. A. B.; BIASOTO, A. C. T.; SHAHIDI, F..
Phenolics in food and agricultural processing by-products exist in the soluble and insoluble-bound forms. The ability of selected enzymes in improving the extraction of insoluble-bound phenolics from the starting material (experiment I) or the residues containing insoluble-bound phenolics (experiment II) were evaluated. Pronase and Viscozyme improved the extraction of insoluble-bound phenolics as evaluated by total phenolic content, antioxidant potential as determined by ABTS and DPPH assays, and hydroxyl radical scavenging capacity, reducing power as well as evaluation of inhibition of alpha-glucosidase and lipase activities. Viscozyme released higher amounts of gallic acid, catechin, and prodelphinidin dimer A compared to Pronase treatment. Furthermore,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Composto fenólico; HPLC; Flavonóides; Subproduto de vinificação; Enzima; Processamento de alimento; Tecnologia de alimento; Phenolic acids; Flavonoids.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1062143
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Identification of phenolic compounds in pomegranate (Punica Granatum) seeds and soybean (Glicine Max) oils and its stabilization by spray drying. Repositório Alice
SILVA-JAMES, N. K.; FERREIRA, M. J. A.; NOGUEIRA, R. I.; FREITAS, S. P.; NASCIMENTO, L. da S. de M. do.
Pomegranate seed oil (PSO), even though highly sensitive to oxidation, has been extensively studied due to its bioactive potentials, assigned to the punicic acid, a polyunsaturated fatty acid, and several phenolic compounds. Combined with soybean oil (SO) we get an affordable product, rich in essential fatty acids. In this study we evaluate PSO and SO for phenolic and fatty acids compositions and encapsulate it by spray drying to increase its shelf life. Modified starch, maltodextrin and gum arabic are evaluated by a mixture design to get the better wall material composition. The content of punicic, a conjugated linolenic acid, and linoleic acids in PSO and SO were, respectively 75% and 54%. As expected, the phenolic acids were found at low concentration...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Pomegranate seed oil; Phenolic acids; Fatty acids; Microencapsulation.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1058270
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Investigations of Growth Promoting Activity of Some Phenolic Acids CIGR Journal
El-Awadi, Mohamed ElSayed.
The effect of phenolic acids as caffeic, ferulic or salicylic acids at low concentrations (up to 30 ppm) were investigated on faba bean growth, yield and some physiological processes. The experiments were carried out during the two growing seasons of 2014/2015 and 2015/2016 at the Research and Production Station, National  Research  Centre,  Nubaria  Province,  Behaira  Governorate,  Egypt. Caffeic, ferulic or salicylic acids increased growth of faba bean plant over the untreated control. Caffeic acid at 20 ppm. showed observable significant increase in dry weight of shoot. Regarding the effect of phenolic acids on some chemical compounds, caffeic acid is seemed to be having the greatest promotive effect on total photosynthetic pigments in fresh leaf...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydroxybenzoic acid; Hydroxycinnamic acid; Phenolic acids; Vicia faba.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4383
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Óleo de argan: histórico cultural, características e aplicações industriais. Repositório Alice
LAGO, R. C. A.; BIZZO, H. R..
bitstream/item/197006/1/Rev-Quim-Ind-2019-762-56-61-.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Vitamin content; Carotenoids; Flavonoids; Phenolic acids; Clusiaceae.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108781
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Peroxidase and phenylalanine ammonia-lyase activities, phenolic acid contents, and allelochemicals-inhibited root growth of soybean Biol. Res.
HERRIG,VANESSA; FERRARESE,MARIA DE LOURDES L.; SUZUKI,LETÍCIA S.; RODRIGUES,JOÃO DOMINGOS; FERRARESE-FILHO,OSVALDO.
The influence of the allelochemicals ferulic (FA) and vanillic (VA) acids on peroxidase (POD, EC 1.11.1.7) and phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activities and their relationships with phenolic acid (PhAs) contents and root growth of soybean (Glycine max (L.) Merr.) were examined. Three-day-old seedlings were cultivated in nutrient solution containing FA or VA (0.1 to 1 mM) for 48 h. Both compounds (at 0.5 and 1 mM) decreased root length (RL), fresh weight (FW) and dry weight (DW) and increased PhAs contents. At 0.5 and 1 mM, FA increased soluble POD activity (18% and 47%, respectively) and cell wall (CW)-bound POD activity (61% and 34%), while VA increased soluble POD activity (33% and 17%) but did not affect CW-bound POD activity. At 1 mM, FA...
Tipo: Journal article Palavras-chave: Roots; Phenolic acids; Phenylalanine ammonia-lyase; Peroxidase; Soybean.
Ano: 2002 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000100009
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Phenolic characterization of Northeast Portuguese propolis: usual and unusual compounds IPB - Escola Superior Agrária
Falcão, Soraia; Vilas-Boas, Miguel; Estevinho, Leticia M.; Barros, Cristina; Domingues, M.R.M.; Cardoso, Susana M..
In this study, an ethanolic extract from Portuguese propolis was prepared, fractionated by highperformance liquid chromatography, and the identification of the phenolic compounds was done by electrospray mass spectrometry in the negative mode. This technical approach allowed the identification of 37 phenolic compounds, which included not only the typical phenolic acids and flavonoids found in propolis from temperate zones but also several compounds in which its occurrence have never been referred to in the literature. Four of the novel phenolic compounds were methylated and/or esterified or hydroxylated derivatives of common poplar flavonoids, although six peculiar derivatives of pinocembrin/pinobanksin, containing a phenylpropanoic acid derivative moiety...
Tipo: Article Palavras-chave: Phenolic compounds; Flavonoids; Phenolic acids; Mass spectrometry; Electrospray ionization.
Ano: 2010 URL: http://hdl.handle.net/10198/3608
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Quantificação de ácidos fenólicos constitutivos da soja [Glycine max (L.) Merrill] por cromatografia líquida de alta eficiência (CLAE). Infoteca-e
FRIGHETTO, R. T. S.; BACCAN, M..
O escopo do presente trabalho é a disponibilização de um método de análise para a determinação quantitativa de ácidos fenólicos constitutivos das folhas de soja. O método é uma adaptação baseada em Evaristo e Leitão (2001) para mistura da fase móvel e o comprimento de onda determinado por Ruhland et al (2005).
Tipo: Documentos (INFOTECA-E) Palavras-chave: Ácidos fenólicos; Cromatografia líquida de alta eficiência; Cromatografia; Análise química; Soja; High performance liquid chromatography; Soybeans; Phenolic acids.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/939049
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Seasonal variability of phenolic compounds and antioxidant activity in prickly pear cladodes of Opuntia and Nopalea genres Ciênc. Tecnol. Aliment.
ALVES,Francisco Abel Lemos; ANDRADE,Albericio Pereira de; BRUNO,Riselane de Lucena Alcântara; SILVA,Maria Goretti de Vasconcelos; SOUZA,Maria de Fátima Vanderlei de; SANTOS,Djalma Cordeiro dos.
Abstract The prickly pear is a cactaceae that have chemical compounds that act as natural antioxidants. In addition, the prickly pear is a plant widely used in semiarid region as it’s considered very important forage for animal feed, especially in the dry season. The objectives of this research were to characterize the main classes of phytochemicals, determine the phenols content, flavonoids and anthocyanins and evaluate the antioxidant activity of the prickly pear cultivars Opuntia and Nopalea grown in the semiarid region of Pernambuco in two collection periods (dry and rainy). In the work crude ethanol extracts from cladodes of cultivars (IPA-20, Elephant Ear Mexican, F-08, V-19, Small palm, F-21 and IPA-Sertânia) were used. As for the class of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity and nutrition; Cactus pear; Flavonoids; Phenolic acids; Phytochemicals.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400536
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