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| Registros recuperados: 19 | |
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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| Mariangel,Emilia; Reyes-Diaz,Marjorie; Lobos,Walter; Bensch,Emma; Schalchli,Heidi; Ibarra,Pamela. |
| The antioxidant capacity (AC), total anthocyanins (TA) and total phenols (TP) of calafate fruit from four locations in southern Chile (El Blanco, Lonquimay, Mañihuales and Temuco) were determined using both the free radical 2.2-diphenyl-1-picrylhydrazyl (DPPH) method and the linoleic acid oxidation inhibition method as well as the pH-differential and Folin-Ciocalteu methods. Phenolic compounds were also identified using HPLC-DAD (High Performance Liquid Chromatography-Diode-Array Detection). The results showed that TP varied significantly according to the location. Mañihuales was noteworthy, with 34.9 mg of GAE g-1 dried fruit. The measured AC level depended on the methodology used, varying significantly between locations according to the DPPH results.... |
| Tipo: Journal article |
Palavras-chave: Antioxidants; Antioxidant capacity; Berberis; Flavonoids; Phenolic acids; Total phenols. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100014 |
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| Pereira,Juciane Abreu Ribeiro; Teixeira,Meryene Carvalho; Saczk,Adelir Aparecida; Barcelos,Maria de Fátima Piccolo; Oliveira,Marcelo Firmino de; Abreu,Wilson César de. |
| ABSTRACT Yacon (Smallanthus sonchifolius) is a tuberous root from the Andean region in the South America rich em water, fructooligosaccharides and phenolic compounds, some of which are natural antioxidants and may help prevent the deleterious action of free radicals in the body. The yacon has attracted much attention due to their potential health benefits to humans. In this study the levels of total phenolics, tannins, phenolic acids, and total antioxidant activity were measured in the peel and pulp of yacon tubers both in the fresh and flour forms. The flours of yacon presented higher concentrations of total phenolics and tannins, especially peel flour. The yacon pulp flour stood out as the main source of phenolic acids, mainly caffeic and chlorogenic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Smallanthus sonchifolius; Total phenolics; Tannins; Phenolic acids. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000500596 |
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| Costa,Rayssa Ribeiro da; Rodrigues,Antônio Augusto Marques; Vasconcelos,Victor Alexandre Freire de; Costa,João Paulo Dias; Lima,Maria Auxiliadora Coêlho de. |
| ABSTRACT: The biosynthesis of phenolic compounds might be influenced by environmental factors, such as solar radiation, temperature and relative air humidity, and production system. Some components of the production system, particularly the trellis system and rootstock, might change the phenolic composition of grapes due to microclimate of the cultivation region. In this study, the phenolic profile of ‘Chenin Blanc’ grapes was characterized with different trellis systems and rootstocks in two consecutive production cycles by using high-performance liquid chromatography under tropical semi-arid conditions. In the second production cycle (Jan-May/2016), accumulation of (-) - epicatechin gallate and (-) - epigallocatechin gallate was higher when vigorous... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L.; Phenolic acids; Flavonoids; Stilbenes; Tropical vitiviniculture. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000301300 |
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| Registros recuperados: 19 | |
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