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Aromatic plants as a source of important phytochemicals: vitamins, sugars and fatty acids in Cistus ladanifer, Cupressus lusitanica and Eucalyptus gunnii. leaves IPB - Escola Superior Agrária
Guimarães, Rafaela; Barros, Lillian; Carvalho, Ana Maria; Sousa, Maria João; Ferreira, Isabel C.F.R..
The phytochemical composition of three aromatic plants (Cistus ladanifer L., Cupressus lusitanica Mill. and Eucalyptus gunnii Hook. f) was evaluated, in order to valorize them as sources of nutraceuticals. Samples were analysed for ascorbic acid by spectrophotometric assay, tocopherols by high performance liquid chromatography (HPLC) coupled to a fluorescence detector, sugars by HPLC coupled to a refraction index detector (RID), and fatty acids by gas-chromatography (GC) coupled to a flame ionization detector (FID). The analysed plants contain very useful compounds such as vitamins (ascorbic acid and tocopherols), reducing sugars (glucose and fructose) and polyunsaturated fatty acids (linoleic, -linoleic and eicosadienoic acids). Their vitamins and sugars...
Tipo: Article Palavras-chave: Aromatic plants; Phytochemicals; Vitamins; Polyunsaturated fatty acids; Nutraceuticals.
Ano: 2009 URL: http://hdl.handle.net/10198/2652
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Assessment of the phytochemical constituents and antioxidant activity of a bloom forming microalgae Euglena tuba Biol. Res.
Chaudhuri,Dipankar; Ghate,Nikhil Baban; Deb,Shampa; Panja,Sourav; Sarkar,Rhitajit; Rout,Jayashree; Mandal,Nripendranath.
BACKGROUND: Unstable generation of free radicals in the body are responsible for many degenerative diseases. A bloom forming algae Euglena tuba growing abundantly in the aquatic habitats of Cachar district in the state of Assam in North-East India was analysed for its phytochemical contents, antioxidant activity as well as free radical scavenging potentials. RESULTS: Based on the ability of the extract in ABTS•+ radical cation inhibition and Fe3+ reducing power, the obtained results revealed the prominent antioxidant activity of the algae, with high correlation coefficient of its TEAC values to the respective phenolic and flavonoid contents. The extract had shown its scavenging activity for different free radicals and 41.89 ± 0.41...
Tipo: Journal article Palavras-chave: Euglenoid; Phytochemicals; Free radical scavenging; Antioxidant; Reducing power.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100024
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Association between glucosinolate concentration and injuries caused by cabbage stink bugs Eurydema spp. (Heteroptera: Pentatomidae) on different Brassicas - doi: 10.4025/actasciagron.v35i1.15622 Agronomy
Bohinc, Tanja; University of Ljubljana; Hrastar, Robert; Slovenian Institute of Hop Research and Brewing; Košir, Iztok Jože; Slovenian Institute of Hop Research and Brewing; Trdan, Stanislav; University of Ljubljana.
In 2010, we were determining the contents of glucosinolates in different Brassicas in order to study their influence on feeding of cabbage stink bugs (Eurydema spp.) and the consequent extent of damage. We confirmed that glucosinolates content depends on plant species, plant organs and the time of sampling. In the samples aliphatic glucosinolates (glucoiberin, progoitrin, epiprogoitrin, epiprogoitrin, sinigrin, gluconapin, glucoraphenin, sinalbin) prevailed. Glucobrassicin, an important indolic glucosinolate compound, was detected in all tested Brassicas. Its concentration in the oil radish samples was highest during the first assessment (30 DAS), 8.84 ± 0.65 µmol g-1 ds, while the oilseed rape samples displayed lowest concentration during the last...
Tipo: Fieldwork and laboratory analysis Palavras-chave: Phytochemicals; Cabbage stink bugs; Cabbage; White mustard oil radish white mustard Phytochemicals; Cabbage stink bugs; Cabbage; White mustard.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15622
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Bactericidal antibiotic-phytochemical combinations against methicillin resistant Staphylococcus aureus BJM
Kyaw,Bhone Myint; arora,Shuchi; Lim,Chu Sing.
Methicillin resistant Staphylococcus aureus (MRSA) infection is a global concern nowadays. Due to its multi-drug resistant nature, treatment with conventional antibiotics does not assure desired clinical outcomes. Therefore, there is a need to find new compounds and/or alternative methods to get arsenal against the pathogen. Combination therapies using conventional antibiotics and phytochemicals fulfill both requirements. In this study, the efficacy of different phytochemicals in combination with selected antibiotics was tested against 12 strains of S. aureus (ATCC MRSA 43300, ATCC methicillin sensitive S. aureus or MSSA 29213 and 10 MRSA clinical strains collected from National University Hospital, Singapore). Out of the six phytochemicals used, tannic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytochemicals; Antibiotic combinations; Synergism; Antibiotic resistance; Methicillin-resistance Staphylococcus aureus (MRSA).
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300013
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Bioactive compound retention in frozen red and yellow Strawberry guava pulps added with L-Ascorbic acid Rev. Bras. Frutic.
Vergara,Lisiane Pintanela; Reissig,Gabriela Niemeyer; Franzon,Rodrigo Cezar; Rodrigues,Rosane da Silva; Chim,Josiane Freitas.
Abstract Brazil presents a great variety of native fruits, which have aroused commercial interest, such as the strawberry guava. In this sense, many researches have looked for alternatives that allow postharvest availability of fruits, considering that perishability is a limiting factor for its commercialization. The freezing process is an important alternative in the sense of making these fruits available for longer on the market. The use of L-ascorbic acid is a potent protective agent in the stability of bioactive compounds in fruit pulps. The objective of this study was to evaluate potentially bioactive compounds present in red and yellow strawberry guava pulps added with L-ascorbic acid (1% m / m) and verify its effect on retention of these compounds...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Native fruits; Psidium cattleianum Sabine; Phytochemicals; Antioxidant; Storage.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000600301
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BIOACTIVE COMPOUNDS IN CONVENTIONAL AND NO ADDED SUGARS RED STRAWBERRY GUAVA (Psidium cattleianum Sabine) JELLIES Rev. Bras. Frutic.
REISSIG,GABRIELA NIEMEYER; VERGARA,LISIANE PINTANELA; FRANZON,RODRIGO CEZAR; RODRIGUES,ROSANE DA SILVA; CHIM,JOSIANE FREITAS.
ABSTRACT This study aimed to prepare jellies of conventional type of red strawberry guava (with added sucrose) and no added sugar and evaluate the physical and chemical composition and content of bioactive compounds in them. Four jellies formulations were prepared: conventional with addition of sucrose (F1), aspartame (F2), saccharin and cyclamate (F3), acesulfame and sucralose (F4). Physicochemical analysis of pH were carried out, as well as analysis of titratable acidity, total soluble solids, ashes, proteins, lipids, moisture, carbohydrates, calories, lightness, color tone, total phenols, anthocyanins, carotenoids, ascorbic acid and antioxidant activity, by the capture of DPPH and ABTS radicals. Conventional and no added sugars jellies did not differ...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Native fruits; Processing; Phytochemicals; Special purpose foods.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300901
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Bioactive compounds in the peel of camu camu genotypes from Embrapa’s active germplasm bank Ciênc. Tecnol. Aliment.
SOUZA,Aline; OLIVEIRA,Thaise; MATTIETTO,Rafaella; NASCIMENTO,Walnice; LOPES,Alessandra.
Abstract Our objective in this work was to evaluate the contents of the major bioactive compounds in the peel of three genotypes of camu camu at different maturity stages. The genotypes had high concentration of ascorbic acid in the peel ranging from 13.73% to 24.02%. In the ripe maturity stage the genotypes 17 and 44 presented the highest concentration of phenolics (3,299.97 mg GAE.100 g-1) and anthocyanins (165.91 g.100 g-1). Flavonols and carotenoids showed a distinct and statistically different behavior in each genotype. Genotype 44 in the ripe stage had the highest content of carotenoids (105.88 mg.100 g-1). The high contents of vitamin C and phenolic compounds make the residue of camu camu fruit processing a rich source of antioxidants to the food...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Maturity; Phytochemicals; Residue; Vitamins.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000100067
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Cassava starch edible coating incorporated with propolis on bioactive compounds in strawberries Ciência e Agrotecnologia
Thomas,Ariela Betsy; Nassur,Rita de Cássia Mirela Resende; Boas,Ana Carolina Vilas; Lima,Luiz Carlos de Oliveira.
ABSTRACT Strawberry is a fruit appreciated throughout the world due to its attractive quality attributes and stands out due to its high phenolic compound content, which positively contribute to biological properties of nutritional interest. The objective of this study was to evaluate the effect of cassava starch coatings incorporated with propolis combinations on the phytochemical content and the maintenance and increase of the strawberry antioxidant activity. The treatments were 3% cassava starch (CS), 3% cassava starch + 33% ethanolic propolis extract (CS + P33%), 3% cassava starch + 66% ethanolic propolis extract (CS + P66%) and control (C). The fruits were stored at 4 °C ± 0.5 ºC and 90%RH for 16 days, making up a completely randomized design with 4...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytochemicals; Antioxidant; Fragaria ananassa..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000100087
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Chemical, biochemical and electrochemical assays to evaluate phytochemicals and antioxidant activity of wild plants IPB - Escola Superior Agrária
Barros, Lillian; Cabrita, Luís; Vilas-Boas, Miguel; Carvalho, Ana Maria; Ferreira, Isabel C.F.R..
Plants are a source of compounds that may be used as pharmacologically active products. Cytisus multiflorus, Filipendula ulmaria and Sambucus nigra have been used as important medicinal plants in the Iberian Peninsula for many years, and are claimed to have various health benefits. Herein, the phytochemical composition and antioxidant activity of the mentioned wild medicinal plants were evaluated in vitro, based on chemical, biochemical and electrochemical methods. F. ulmaria was found to be richest in antioxidant phytochemicals, such as phenolics (228 mg GAE/g DW), flavonoids (62 mg CE/g DW), ascorbic acid (2700 lg/g DW) and tocopherols (497 lg/g DW). The antioxidant activity was found to vary in the order: F. ulmaria > S. nigra > C. multiflorus,...
Tipo: Article Palavras-chave: Cytisus multiflorus; Filipendula ulmaria; Sambucus nigra; Antioxidants; Phytochemicals; Electrochemistry.
Ano: 2011 URL: http://hdl.handle.net/10198/4104
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Diversity of phytohormones within microalgae. Repositório Alice
MIRANDA, C. H. B.; CAVALCANTI, C. G. C.; CEREIJO. C. R.; ABDELNUR, P. V.; COSTA, P. P. K. G..
bitstream/item/202241/1/CESAR-Book-of-Abstracts-Hohenheim-2019.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Phytochemicals; Plant growth regulators; Biofertilizers; Biomass production.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112394
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Exotic fruits as a source of important phytochemicals: improving the traditional use of Rosa canina fruits in Portugal IPB - Escola Superior Agrária
Barros, Lillian; Carvalho, Ana Maria; Ferreira, Isabel C.F.R..
Several exotic fruits are used in folk medicine as potential sources of healthy compounds. Rosa canina L. (dog rose) fruits and other parts used to be widely consumed in rural areas from Portugal. The present work intends to highlight the presence of bioactive compounds in those different parts, in order to improve their use based on scientific studies. The antioxidant activity was screened through: radical scavenging effects, reducing power, and inhibition of lipid peroxidation in brain homogenates. Phytochemical characterization included determination of sugars by HPLC-RI, fatty acids by GC-FID, tocopherols by HPLC-fluorescence, phenolics, flavonoids, carotenoids, chlorophylls and ascorbic acid, by spectrophotometric techniques. Galls revealed the...
Tipo: Article Palavras-chave: Rosa canina; Wild fruits; Phytochemicals; Antioxidant properties.
Ano: 2011 URL: http://hdl.handle.net/10198/6034
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Extract of Ellagitannins starting with Strawberries (Fragaria sp.) and Blackberries (Rubus sp.) Ciênc. Tecnol. Aliment.
MÁRQUEZ-LÓPEZ,Anahí; AYALA-FLORES,Fernando; MACÍAS-PURECO,Stolishnaya; CHÁVEZ-PARGA,Ma. del Carmen; VALENCIA FLORES,Dora Cecilia; MAYA-YESCAS,Rafael; GONZÁLEZ-HERNÁNDEZ,Juan Carlos.
Abstract Characterize the content of phytochemical compounds present in samples of extracts of strawberry (Fragaria sp.) and blackberry (Rubus sp.). The extraction of said compounds was carried out with solutions of polar solvents, such as acetone, ethanol and methanol, using an experimental design with three factors: state of maturity, resting time and temperature. The characterization of these fruits is the beginning of the utilization mainly of ellagitannins to produce ellagic acid. Total phytochemical content was determined by spectrophotometric techniques, for phenolic content it was used Folin-Ciocalteu, for flavonoids it was determined with aluminium chloride, the antioxidant activity was evaluated by the methods of DPPH and ABTS+, the bactericidal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ellagitannins; Strawberries; Blackberries; Phytochemicals.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019005026108
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Folk medicine of Trás-os-Montes (Portugal). Traditional uses and bioactive compounds of six common medicinal species IPB - Escola Superior Agrária
Carvalho, Ana Maria; Barros, Lillian; Ferreira, Isabel C.F.R.; Frazão-Moreira, Amélia.
Ethnobotanical surveys conducted in north-eastern Portugal along several years (2000-2009) reported plant knowledge and use of almost 150 wild species used in folk medicine. This poster documents traditional knowledge and reports the first approach to the antioxidant potential evaluation of six of these species with particular cultural significance, accessed by biochemical assays used as models for the lipid peroxidation damage in biomembranes. Bioactive compounds such as phenolics, flavonoids, vitamin C and vitamin E were also determined.
Tipo: Other Palavras-chave: Portuguese ethnobotany; Etnobotânica portuguesa; MAP; PAM; Phytochemicals; Bioactive compounds; TEK; Plantas e saberes.
Ano: 2009 URL: http://hdl.handle.net/10198/3773
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In Silico Target Identification and Validation for Antioxidant and Anti-inflammatory Activity of Selective Phytochemicals. BABT
Rana,Shikha; Dixit,Savita; Mittal,Alok.
Abstract Phytochemicals present in plant extract include a number of biological active compounds which have shown promising antioxidant and anti-inflammatory activities in many animal studies. Present knowledge about the biochemical interactions of these compounds present in phytochemical extracts and target enzymes or proteins responsible for antioxidant and anti-inflammatory activity is limited. Present work is an attempt to identify and validate possible biological targets as enzymes or proteins involved in these targeted studies using molecular docking as computational method. IMPPAT: Indian Medicinal Plants, Photochemistry and Therapeutics (a curated database) has been used to retrieve various phytochemicals derived from selected plants which includes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Target identification and validation; Phytochemicals; Antioxidant activity; Anti-inflammatory activity; Molecular docking.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100431
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In vitro antioxidant capacity and free radical scavenging evaluation of active metabolite constituents of Newbouldia laevis ethanolic leaf extract Biol. Res.
Habu,Josiah Bitrus; Ibeh,Bartholomew Okechukwu.
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Tipo: Journal article Palavras-chave: Newbouldia laevis; Phytochemicals; Ethanolic extraction; Antioxidants; Free radical scavengers; Bioactive constituents.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100016
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In vitro antioxidant properties and characterization in nutrients and phytochemicals of six medicinal plants from the Portuguese folk medicine IPB - Escola Superior Agrária
Barros, Lillian; Oliveira, Sónia; Carvalho, Ana Maria; Ferreira, Isabel C.F.R..
Traditional ethnomedical use of plants is recognized as an important potential source of compounds used in mainstream medicine. Herein, the in vitro antioxidant properties, nutrients and phytochemical composition of six medicinal plants widely used in the north-eastern Portuguese region were evaluated. The antioxidant activity was screened through: radical scavenging effects, reducing power, and inhibition of lipid peroxidation in brain homogenates. Nutrients and phytochemical characterization included determination of sugars by HPLC-RI, fatty acids by GC-FID, tocopherols by HPLC-fluorescence, phenolics, flavonoids, carotenoids and ascorbic acid, by spectrophotometric techniques. Rubus ulmifolius flowers revealed the highest antioxidant activity, and the...
Tipo: Article Palavras-chave: Human health; Phytochemicals; Carotenoids; Antioxidants properties; MAP; Portuguese ethnobotany.
Ano: 2010 URL: http://hdl.handle.net/10198/3039
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Influence of Genotype and Harvest Season on the Phytochemical Composition of Araçá (Psidium Cattleianum Sabine) Fruit. Repositório Alice
TEIXEIRA, A. M.; CHAVES, F. C.; FRANZON, R. C.; ROMBALDI, C. V..
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Phytochemicals; Antioxidant capacity; Antiproliferative activity; Genotypes; Phytochemicals; Antioxidant capacity; Antiproliferative activity; Genotypes.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1058324
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Influence of osmotic dehydration on bioactive compounds, antioxidant capacity, color and texture of fruits and vegetables: a review Ciência Rural
Landim,Ana Paula Miguel; Barbosa,Maria Ivone Martins Jacintho; Júnior,José Lucena Barbosa.
ABSTRACT: Osmotic dehydration (OD) is a conservation technique applied to foodstuffs, which promotes partial reduction of water, extends their shelf life and reduces both post-harvest losses and changes in product characteristics. Currently, it has been given emphasis on trying to understand how the process affects the quality of processed vegetables, because process variables can interfere in their antioxidant capacity, color and texture. Moreover, the antioxidant capacity can be affected by chemical changes, leaching losses, reduced moisture and solid gain as well as the present bioactive in the profile of the performed analysis method. In color, the overall changes are caused by temperature increase, which can cause enzymatic and/or non-enzymatic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Processing; Quality; Phytochemicals.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001714
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Lantana camara: Phytochemical Analysis and Antifungal Prospective Planta Daninha
BASHIR,S.; JABEEN,K.; IQBAL,S.; JAVED,S.; NAEEM,A..
ABSTRACT: In the current study phytochemical analysis and in vitro antifungal potential of fruits, leaves and stem of Lantana camara L. were studied. The phytochemical analysis indicated the presence of alkaloids, flavonoids, tannins, saponins, glycosides and terpenoids in fruit, stem and leaves of L. camara. The in vitro antifungal activity of fruit, stem and leaves of L. camara was tested against Colletotrichum gloeosporioides Penz. Different concentrations (1-5%) of methanolic extract of all the selected parts of L. camara were applied in vitro against the test fungus. The results of in vitro experiment revealed that higher concentration of methanolic fruit extract (5%) significantly reduced the biomass C. gloeosporioides up to 66%. This effective...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthracnose; Bioactivity; Colletotrichum gleosporioides; GC-MS; Phytochemicals.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100167
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Medicinal plants and folk uses in Trás-os-Montes (Portugal). An overview of phytochemical properties and bioactive compounds potential IPB - Escola Superior Agrária
Carvalho, Ana Maria; Barros, Lillian; Ferreira, Isabel C.F.R..
Ethnobotanical surveys conducted in north-eastern Portugal reported plant knowledge and uses of several wild species in folk medicine based on field studies using ethnographic methodologies. Taking advantage of a multidisciplinary team, besides botanical inventories and sociocultural and anthropological studies, we set out applied phytochemical research on locally used medicinal plants (more frequently cited, i.e. frequency of citation > 50%) that have special cultural significance. Experimental phytochemical research points to pharmacological effects that confirm the importance of the empirical use of these species and their contribution to a good health condition.
Tipo: Other Palavras-chave: Portuguese ethnobotany; Etnobotânica portuguesa; MAP; TEK; Phytochemicals; Bioactive properties.
Ano: 2010 URL: http://hdl.handle.net/10198/3687
Registros recuperados: 32
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