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| Registros recuperados: 24 | |
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| 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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| BASSANI,DÉBORA C.; NUNES,DOMINGOS S.; GRANATO,DANIEL. |
| This study focused on maximizing the extraction of total phenolics and flavonoids as well as the antioxidant activity measured by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay from roasted yerba mate (Ilex paraguariensis) as a function of time (5, 7.5 and 10 min) and temperature of extraction (60, 75 and 90°C). The data were subjected to Response Surface Methodology and the results showed that polynomial equations were significant, did not present lack of fit, and presented adjusted determination coefficients above 98%, proving their suitability for prediction purposes. Using the desirability function, the optimum operating conditions to obtain a higher extraction of antioxidants was found to be 10 min of extraction at 90°C, and the tea prepared under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenolic composition; Correlation analysis; Desirability function; Phytochemicals; Functional foods. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200923 |
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| 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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| Kan,Tuncay; Gundogdu,Muttalip; Ercisli,Sezai; Muradoglu,Ferhad; Celik,Ferit; Gecer,Mustafa Kenan; Kodad,Ossama; Zia-Ul-Haq,Muhammad. |
| BACKGROUND: Turkey is the main apricot producer in the world and apricots have been produced under both dry and irrigated conditions in the country. In this study, phenolic compounds and vitamins in fruits of one wild (Zerdali) and three main apricot cultivars ('Cataloglu', 'Hacihaliloglu' and 'Kabaasi') grown in both dry and irrigated conditions in Malatya provinces in Turkey were investigated. RESULTS: The findings indicated that higher content of phenolic compounds and vitamins was found in apricot fruits grown in irrigated conditions. Among the cultivars, 'Cataloglu' had the highest rutin contents both in irrigated and dry farming conditions as 2855 µg in irrigated and 6952 µg per 100 g dried weight base in dry conditions and the highest chlorogenic... |
| Tipo: Journal article |
Palavras-chave: Apricot; Phytochemicals; Ripening; Irrigation; HPLC. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100046 |
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| ROJAS-PADILLA,Carmen Rosa; VASQUEZ-VILLALOBOS,Victor Javier; VITAL,Camilo Elber; ROJAS,Julio Cesar; RIOS,Nelson Horacio; LUJAN,Angel Pedro; NINAQUISPE,Viviano Paulino; ESPINOZA,Mario Sergio. |
| Abstract For over two decades, there has been an increasing interest in finding natural antioxidants, because they can protect the human body from free radicals and retard the progress of many chronic diseases. Phenolic compounds were identified and quantified in potato cooking water from freeze–dried slices with peel and from whole potato stored for 20 days. Extracts were obtained with an aqueous solution composed of 50% methanol and 0.5% acetic acid. Fifteen secondary metabolites were monitored using the Ultra Performance Liquid Chromatography system coupled to mass spectrometry (UPLC-MS / MS). A calibration curve (from 0.1 ng to 100 μg) was generated and the data was analyzed using the software “MassHunter Workstation” VB 06.00, the results were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Native potato; Phytochemicals; Boiled potato; Chlorogenic acid; Cancer. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000100066 |
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| 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: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020000200430 |
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| Pengkumsri,Noppawat; Chaiyasut,Chaiyavat; Saenjum,Chalermpong; Sirilun,Sasithorn; Peerajan,Sartjin; Suwannalert,Prasit; Sirisattha,Sophon; Sivamaruthi,Bhagavathi Sundaram. |
| Rice, the seed of Oryza species, is the major cereal crop in most of the developing countries. Nearly 95% of global rice production is done in Asian countries, and about half of the world’s population consumes it. Some speciality rices are not commonly consumed. Colored rice is one of such variety. In these varieties, high amounts of anthocyanin pigment are deposited in the rice coat to form its black (also known as purple), brown and red colors. Minimum studies are there to explain the properties of these rice varieties of Thailand. Thus, the current study was aimed to assess the physicochemical and antioxidative properties of three rice varieties (Chiang Mai Black rice, Mali Red rice and Suphanburi-1 Brown rice) of different cultivars of northern... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anti-oxidant; Phytochemicals; Colored rice variety; Polar and non-polar extraction. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000200331 |
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| SANTIAGO,Gabriela de Lima; OLIVEIRA,Ingryd Garcia de; HORST,Maria Aderuza; NAVES,Maria Margareth Veloso; SILVA,Mara Reis. |
| Abstract Baru (Dipteryx alata Vog.) is a native fruit of the Brazilian Savannah that can be used in the food industry and may contribute to the economy of the Brazilian Midwest. The proximate composition, the phenolic content and the antioxidant capacity of the peel, pulp and raw and roasted baru almond were examined and compared. Peel showed higher concentrations of dietary fibers (24.1 g/100 g) followed by pulp and roasted almond (18 g/100 g and 16 g/100 g, respectively), and raw almond (12.0 g/100 g). However, the almonds presented the highest lipid and protein concentrations compared to baru peel and pulp. In addition, raw almond showed the highest total phenolic contents (1,107.0 mg GAE/100 g) and antioxidant capacity, but the roasted almond, and baru... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytochemicals; Nutrients; Fruit; Cerrado. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000200244 |
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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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| 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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| LIRA, S. M.; COELHO, L. C.; MARQUES, C. G.; HOLANDA, M. O.; DANTAS, J. B.; LIMA, A. C. V. DE; SANTOS, G. B. M.; SILVA, G. S. DA; ABREU, F. A. P. de; DIONISIO, A. P.; ZOCOLO, G. J.; GUEDES, M. I. F.. |
| Tipo: Parte de livro |
Palavras-chave: Fitoquimicos; Pitaya vermelha; Phytochemicals; Red pitaya; Pitaya; Extrato Vegetal; Plant extracts. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1120456 |
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| 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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| Registros recuperados: 24 | |
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