From Peter Hazelhurst, By Michael Horsnell, , John Witherow, Richard Ford, By Clifford Webb Midlands Industrial Correspondent, By Frances Gibb, By George Clark Political Correspondent, From Robert Fisk, From Paul Routledge Labour Editor, By Fred Emery Political Editor, By a Staff Reporter, By Michael Baily Transport Correspondent, From Annabel Ferriman Health Services Correspondent, By Ian Bradley, By Edward Townsend, By Our Political Editor, From Our Correspondent, By John Roper, From Christopher Warman, By Hugh Clayton Agriculture Correspondent, By Nicholas Timmins, From Arthur Osman, By Henry Stanhope Defence Correspondent, By John Young Planning Reporter, From Our Education Correspondent, By Kenneth Gosling Arts Reporter, By Harry Golombek Chess Correspondent, By Pat Healy Social Services Correspondent, By Diana Geddes Education Correspondent, By Lucy Hodges, By Arthur Reed Air Correspondent, By Stanley Baldwin, From Patricia Clough, From David Wood, From Charles Hargrove, From Robert Schuil, From Patrick Brogan, By Hugh Noyes Parliamentary Correspondent, From Patrick Knight, by Arrigo Levi, From Christopher Walker, From Tewfik Mishlawi, From Michael Leapman, From Ivor Davis, From Hasan Akhtar, From Denis Reinhardt, Dessa Trevisan, From Richard Hughes, Michael Ratcliffe, Jacky Gillott, H. R. F. Keating, Michael Church, Ned Chaillet, Brian Martin, Nikolai Tolstoy, John Hackett, Jenny Woolf, Shona Crawford Poole, Hugh Clayton, John Higgins, John Percival, Joan Bakewell, Stanley Sadie, Barry Millington, Ronald Butt, Bernard Levin, Alan Hamilton, CARLOS BRAGA, , JOAOUIM JOSE, , BARBOSA ROMERO, , JULIO BARREIROS, MARTINS, , JOSE MANUEL VAZ, , CARLOS AUGUSTO, , G. MOURA BRANCO, , HERNANI LOPES, , da SILVA MALA, , L. CHAINHO, , PEREIRA, , L. de JESUS, SANTOS SOARES, , S. SANTOS, , JOAO PINHEIRO, , C. A. A. BERNARDO, , JOAO FERREIRA, , MARIA ISABEL, CALADO FERREIRA, , VIRGINIA M. GERGORIO, , EDITE M. G. P. FERNANDES, , JOSE MANUEL E. VALENCA, , MARIA RAQUEL VALENCA, , RAUL VIDAL, MARIO de ARAUJO, , REX DAVIS, , T. A. BIRRELL, , HUGH PESKETT, , W. E. BAUGH, , IAIN MONCREIFFE OF THAT ILK, , W. H. HANKIN, , ANTONY WHITAKER, , A. L. S. CORNER, , RICHARD RITGHIE, , TITO BENADY, , KENNET, , NOEL ANNAN, , MICHAEL HOLROYD, , DAVID GARNETT, , VICTOR PRITCHETT, , EVAN LUARD, , D. R. MIDGLEY, , ADRIAN C. BOULT, , GERTRUDE M. BANNISTER, , By the Staff of Nature, From Our Own Correspondent, By Geraldine Norman Sale Room Correspondent, By Clifford Longley Religious Affairs Correspondent, Cyril Bainbridge, By our Arts Reporter, W. W. W. and J. B. write:, Baroness Airey of Abingdon writes:, By Mitchell Platts, By Keith Macklin, By John Nicholls, John Young, From Richard Streeton, By John Woodcock Cricket Correspondent, By Michael Seely, By Norman Fox Football Correspondent, By Our Rifle Shooting Correspondent, By Pamela Macgregor-Morris, By John Watson, By Peter Hill Industrial Editor, By David Felton Labour Reporter, By Roman Eisenstein Banking Correspondent, By John Whitmore Financial Correspondent, By Tim Jones, From Michael Hornsby, By Peter Wilson-Smith, From Frank Vogl, William Olsen, By Kenneth Owen Technology Editor, By Bill Johnstone, By Margaret Stone, By Nicholas Hirst Energy Correspondent, MELVILLE BERNSTEIN, , MRS M. D. LOVEDAY, , JOHN GADD, , A. C. PARSONS, , J. B. DANEL, , HUGH CAWDRON, , BY THE FINANCIAL EDITOR, Ross Davies, David Blake, Derek Harris, Michael Prest Mining correspondent, By Our Financial Staff, By Rosemary Unsworth, Peter Davalle,
News: EEC budget is approved seven months late, Latest pamphlets Religious beliefs of Elgar, The Times Cook Separate ways with eggs, Kidnap victim is ...
1980 - Gale Group | TDA
Vanessa Vieira, Miguel A. Prieto, Lillian Barros, João A. P. Coutinho, Olga Ferreira, Isabel C.F.R. Ferreira,
This study compares maceration (ME) and microwave assisted (MAE) extractions aiming to maximize the extraction of valuable compounds from Juglans regia L. leaves. An experimental design, assisted by response surface methodology, was developed to optimize the variables of the ME and MAE systems (time, temperature and ethanol-water proportion). The responses used as criteria were the quantification by HPLC-DAD (3-O-caffeoylquinic acid, quercetin 3-O-glucoside and quercetin O-pentoside), the extraction ...
Tópico(s): Fermentation and Sensory Analysis
2017 - Elsevier BV | Industrial Crops and Products
Filipa Mandim, Vânia C. Graça, Ricardo C. Calhelha, I. Ferreira Machado, L.F. Vieira Ferreira, Isabel C.F.R. Ferreira, Paulo F. Santos,
In this work, several benzothiazole-based aminosquaraine dyes, displaying strong absorption within the so-called phototherapeutic window (650⁻800 nm), were synthesized. The ability, of all the new dyes, to generate singlet oxygen was assessed by determining the correspondent phosphorescence emission and through the comparison with a standard. The quantum yields of singlet oxygen generation were determined and exhibited to be strongly dependent on the nature of the amino substituents introduced in ...
Tópico(s): Porphyrin and Phthalocyanine Chemistry
2019 - Multidisciplinary Digital Publishing Institute | Molecules
Mikel Añibarro-Ortega, José Pinela, Ana Ćirić, Elsa Lopes, Adriana K. Molina, Ricardo C. Calhelha, Marina Sokóvić, Olga Ferreira, Isabel C.F.R. Ferreira, Lillian Barros,
Aloesin is an aromatic chromone with increasing applications in the cosmetic and health food industries. To optimize its extraction from the Aloe vera leaf rind, the independent variables time (10-210 min), temperature (25-95 °C) and organic solvent composition (0-100%, w/w) were combined in a central composite design coupled with response surface methodology. The solvents consisted of binary mixtures of water with ethanol, propylene glycol, or glycerol. The aloesin levels quantified in each extract ...
Tópico(s): Bioactive Compounds and Antitumor Agents
2021 - Multidisciplinary Digital Publishing Institute | Biology
M. Adosinda M. Martins, Isabel C.F.R. Ferreira, Isabel M. Santos, Maria João R.P. Queiroz, Nelson Lima,
Azo dyes are important chemical pollutants of industrial origin. Textile azo dyes with bioaccessible groups for lignin degrading fungi, such as 2-methoxyphenol (guaiacol) and 2,6-dimethoxyphenol (syringol), were synthesised using different aminobenzoic and aminosulphonic acids as diazo components. The inocula of the best biodegradation assays were obtained from a pre-growth medium (PAM), containing one of the synthesised dyes. The results of the dye biodegradation assays were evaluated every 7 days, ...
Tópico(s): Microbial Metabolism and Applications
2001 - Elsevier BV | Journal of Biotechnology
Lillian Barros, Maria-João Ferreira, Bruno Queirós, Isabel C.F.R. Ferreira, Paula Baptista,
The antioxidant activities of three Portuguese wild edible mushroom species, Leucopaxillus giganteus, Sarcodon imbricatus, andAgaricus arvensis, were evaluated. Methanolic extracts were screened for their reducing power, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging capacity, inhibition of erythrocytes hemolysis and antioxidant activity using the β-carotene linoleate model system. The amounts of ascorbic acid, β-carotene and lycopene found in the mushroom extracts were very low. Otherwise, ...
Tópico(s): Phytochemistry and Bioactivity Studies
2006 - Elsevier BV | Food Chemistry
Vanessa Vieira, Carla Pereira, Tânia C. S. P. Pires, Ricardo C. Calhelha, Maria José Alves, Olga Ferreira, Lillian Barros, Isabel C.F.R. Ferreira,
Juglans regia L. (walnut tree) is a recognized source of bioactive compounds with potential health benefits. In this work, hydroethanolic extracts of J. regia leaves were obtained by heat assisted extraction from different Portuguese samples in two phenological stages (green and yellow leaves) aiming to assess the impact of seasonal variations. The samples were compared regarding their phenolic composition and bioactivity. Seventeen phenolic compounds were identified by liquid chromatography combined ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2019 - Elsevier BV | Industrial Crops and Products
Vanessa Vieira, Carla Pereira, Rui M.V. Abreu, Ricardo C. Calhelha, Maria José Alves, João A. P. Coutinho, Olga Ferreira, Lillian Barros, Isabel C.F.R. Ferreira,
Juglans regia L. (walnut) green husks are an important fraction of waste resulting from the walnut production, thus representing an interesting natural matrix to explore as a source of bioactive compounds. In this work, the hydroethanolic extract of walnut green husks was studied considering the phytochemical composition and the biological activity using different cell model assays, most of them evaluated for the first time for this matrix. From the HPLC-DAD-ESI/MSn analysis, sixteen compounds were ...
Tópico(s): Bee Products Chemical Analysis
2020 - Elsevier BV | Food and Chemical Toxicology
Júlia C. Kessler, Vanessa Vieira, Isabel M. Martins, Yaidelin A. Manrique, Andreia Afonso, Patrícia Ferreira, Filipa Mandim, Isabel C.F.R. Ferreira, Lillian Barros, Alı́rio E. Rodrigues, Madalena M. Dias,
Humans often respond to sensory impulses provided by aromas, and current trends have generated interest in natural sources of fragrances rather than the commonly used synthetic additives. For the first time, the resulting aroma of a selected culture of Thymus mastichina L. was studied as a potential food ingredient. In this context, dried (DR) and fresh (FR) samples were submitted to carbon dioxide (CO2) supercritical extraction (SFE) and hydrodistillation (HD) methods. The extracts were characterised ...
Tópico(s): Biochemical and biochemical processes
2022 - Multidisciplinary Digital Publishing Institute | Molecules
Ellie Beeby, Mariana Magalhães, Juliana Poças, Thomas Collins, Marco F.L. Lemos, Lillian Barros, Isabel C.F.R. Ferreira, Célia Cabral, Isabel M. Pires,
Despite advances in modern therapeutic strategies, cancer remains the second leading cause of death worldwide. Therefore, there is a constant need to develop more efficient anticancer targeting strategies. The anticancer therapeutic proprieties of medicinal plants and their bioactive compounds have been reported for several years, making natural extracts and/or compounds derived from these a promising source of novel anticancer agents. Sand dune plants are subjected to severe environmental stresses, ...
Tópico(s): Phytochemistry and Biological Activities
2020 - Elsevier BV | Journal of Ethnopharmacology
Álvaro F. Magalhães, Vânia C. Graça, Ricardo C. Calhelha, I. Ferreira Machado, L.F. Vieira Ferreira, Isabel C.F.R. Ferreira, Paulo F. Santos,
Squaraine dyes have recently attracted interest as potential second generation photosensitizers for photo-dynamic therapy. Several cationic aminosquaraine dyes bearing benzoselenazole terminal nuclei were synthezised and their cytotoxic activity was tested against four different human tumor cell lines – breast (MCF-7), non-small cell lung (NCI-H460), cervical (HeLa) and hepatocellular (HepG2) carcinomas – and against a non-tumor porcine liver primary cell line (PLP2), both in the absence of light and under ...
Tópico(s): Porphyrin and Phthalocyanine Chemistry
2018 - Springer Science+Business Media | Photochemical & Photobiological Sciences
Ana S. Abreu, Paula M. T. Ferreira, Maria João R.P. Queiroz, Isabel C.F.R. Ferreira, Ricardo C. Calhelha, Letı́cia M. Estevinho,
Abstract Palladium‐catalyzed borylation and Suzuki coupling (BSC) in a one‐pot procedure was successfully applied to the synthesis of several β‐substituted dehydrophenylalanines in the benzo[ b ]thiophene series, with the stereochemistry of the starting materials being maintained. Bromobenzo[ b ]thiophenes bearing an ortho EDG (OMe or Me) were used as the components to be borylated with pinacolborane, whilst pure stereoisomers of β‐bromodehydrophenylalanines were used as the other Suzuki coupling components. ...
Tópico(s): Catalytic
2005 - Wiley | European Journal of Organic Chemistry
Beatriz Silva, Vasco Cadavez, Pedro Ferreira-Santos, Maria José Alves, Isabel C.F.R. Ferreira, Lillian Barros, J. A. Teixeira, Úrsula Gonzales-Barrón,
Plant extracts have been proposed as alternative biocides and antioxidants to be included in a variety of food products. In this work, to assess the potential of rosemary, lemon balm, basil, tarragon, sage, and spearmint to be used as food additives, the chemical profiles and bioactivities of such plant extracts were studied. Furthermore, to evaluate the influence of extraction methods and solvents on the chemical characteristics and bioactivities of the plant extracts, two extraction methods (solid- ...
Tópico(s): Food Science and Nutritional Studies
2021 - Multidisciplinary Digital Publishing Institute | Foods
Produção Nacional
Revisado por pares
Júlia Harumi Iyda, Ângela Fernandes, Ricardo C. Calhelha, Maria José Alves, Flávio Dias Ferreira, Lillian Barros, Joana S. Amaral, Isabel C.F.R. Ferreira,
The inclusion of edible wild plants in human diet has been receiving an increasing attention, as they represent an easily accessible source of nutrients, vitamins and antioxidants. In this work, the leaves of Umbelicus rupestris (Salisb.) Dandy, an edible species for which only scarce data is available in literature, were thoroughly evaluated for its nutritional profile, chemical characterization and bioactive properties. Being considered a succulent plant, the leaves revealed a very high content ...
Tópico(s): Essential Oils and Antimicrobial Activity
2019 - Elsevier BV | Food Chemistry
Produção Nacional
Revisado por pares
Pedro Rodrigues, Tiago Ferreira, Elisabete Nascimento-Gonçalves, Fernanda Seixas, Rui M. Gil da Costa, Tânia Martins, Maria João Neuparth, Maria João Pires, Germano Lanzarin, Luís Félix, Carlos Venâncio, Isabel C.F.R. Ferreira, Margarida M. S. M. Bastos, Rui Medeiros, Isabel Gaivão, Eduardo Rosa, Paula A. Oliveira,
The production of chestnut (Castanea sativa Miller) is mostly concentrated in Europe. Chestnut is recognized by its high content of antioxidants and phytosterols. This work aimed to evaluate the effects of dietary chestnut consumption over physiological variables of FVB/n mice. Eighteen FVB/n male 7-month-old mice were randomly divided into three experimental groups (n = 6): 1 (control group) fed a standard diet; 2 fed a diet supplemented with 0.55% (w/w) chestnut; and 3 supplemented with 1.1% (w/w) chestnut. ...
Tópico(s): Phytochemicals and Antioxidant Activities
2020 - Multidisciplinary Digital Publishing Institute | Biomedicines
Ana S. Abreu, Paula M. T. Ferreira, Luı́s S. Monteiro, Maria João R.P. Queiroz, Isabel C.F.R. Ferreira, Ricardo C. Calhelha, Letı́cia M. Estevinho,
Several benzo[b]thienyldehydrophenylalanines were synthesized from pure stereoisomers of the methyl ester of N-(tert-butoxycarbonyl)-β-bromodehydrophenylalanine as an extension of our previously reported method for the synthesis of dehydrotryptophan analogues to dehydrophenylalanine derivatives. The latter were obtained in high yields by N-deprotection and bromination of N,N-bis-(tert-butoxycarbonyl)-(Z)-dehydrophenylalanine using TFA and NBS. This was carried out in two steps or in a one pot procedure ...
Tópico(s): Chemical Synthesis and Analysis
2004 - Elsevier BV | Tetrahedron
Márcio Carocho, Patrícia Morales, María Ciudad‐Mulero, Virginia Fernández-Ruíz, Elisabete Ferreira, Sandrina A. Heleno, Paula Rodrigues, Lillian Barros, Isabel C.F.R. Ferreira,
In this work, the chemical and physical profile of 5 different bread types (Multicereal bread, Bavaria wheat bread, Wholemeal bread, Rye and Oat bread) were analysed in depth, namely the nutritional profile, individual fatty acids and soluble sugars through GC-FID and HPLC-RI, respectively, as well as the mineral profile, including micro and macroelements. Furthermore, a texture profile analysis was carried out in addition to the measurement of the crust colour. Each bread type showed a distinct ...
Tópico(s): Diet and metabolism studies
2019 - Elsevier BV | Food Chemistry
Produção Nacional
Revisado por pares
Sandrina A. Heleno, Raíssa Carolina Ferreira, Amílcar L. António, Maria João R.P. Queiroz, Lillian Barros, Isabel C.F.R. Ferreira,
Tópico(s): Phytochemistry and Bioactivity Studies
2015 - Elsevier BV | Food Bioscience
Nermine Besrour, Oludemi Taofiq, Filipa Mandim, Carla Pereira, María Inês Días, Marina Sokóvić, Dejan Stojković, Olga Ferreira, Isabel C.F.R. Ferreira, Lillian Barros,
The cosmetic industry is constantly searching for bioactive ingredients, namely, those obtained from natural sources with environmentally friendly connotations and less toxic effects. A previous study of our research group optimized the extraction of phenolic compounds from Juglans regia by heat-assisted extraction. Due to its richness in different phenolic compounds, the present work aimed to develop a formulation containing J. regia leaf extract. The extract's antioxidant, anti-tyrosinase, antimicrobial, ...
Tópico(s): Nuts composition and effects
2022 - Multidisciplinary Digital Publishing Institute | Antioxidants
Ana Sofia Ribeiro, Sofia M. Costa, Diana P. Ferreira, Ricardo C. Calhelha, Lillian Barros, Dejan Stojković, Marina Sokóvić, Isabel C.F.R. Ferreira, Raúl Fangueiro,
The combination of biodegradable fibers at nanoscale with plant-based extracts is attracting increasing attention to produce wound dressing systems. In this work, nanofibers based on chitosan (CS), poly(ethylene oxide) (PEO), cellulose nanocrystals (CNC) and acacia plant-based extract were developed by electrospinning. Firstly, the polymeric formulations and electrospinning parameters were optimized, resulting in nanofibers with average diameters of 80 nm. CNC were successfully introduced into the ...
Tópico(s): Advanced Cellulose Research Studies
2020 - Elsevier BV | Reactive and Functional Polymers
Diana P. Ferreira, D.S. Conceição, Fábio Fernandes, Tânia Sousa, Ricardo C. Calhelha, Isabel C.F.R. Ferreira, Paulo F. Santos, L.F. Vieira Ferreira,
In this work, a squaraine dye CS5 was characterized and evaluated for its potential in photodynamic therapy. The studies were performed in ethanol and also in a powdered biopolymer, in this case chitosan. Ground state absorption, absolute fluorescence quantum yields, fluorescence lifetimes, and transient absorption were determined in order to evaluate the advantage of adsorbing the dye onto a biopolymer. Several concentrations of the dye, adsorbed onto chitosan, were prepared in order to evaluate ...
Tópico(s): Porphyrin and Phthalocyanine Chemistry
2016 - American Chemical Society | The Journal of Physical Chemistry B
Diana P. Ferreira, D.S. Conceição, Ricardo C. Calhelha, Tânia Sousa, Radu Socoteanu, Isabel C.F.R. Ferreira, L.F. Vieira Ferreira,
Porphyrins and some of its derivatives are well known and widely used as photosensitizers (PSs) for Photodynamic Therapy of Cancer (PDT). The present study regards the characterization and evaluation of a synthesized asymmetric porphyrin dye in solution to be used as PS for PDT. This molecule was also incorporated into biopolymeric films composed by chitosan, polyethylene glycol (PEG) and gelatin in order to overtake some of the disadvantages inherent to the PS, but more important, to evaluate the ...
Tópico(s): Nanoplatforms for cancer theranostics
2016 - Elsevier BV | Carbohydrate Polymers
Produção Nacional
Revisado por pares
Rosane Marina Peralta, Eloá Angélica Koehnlein, Roselene Ferreira Oliveira, Vanesa Gesser Corrêa, Rúbia Carvalho Gomes Corrêa, Leonardo C. Bertonha, Adelar Bracht, Isabel C.F.R. Ferreira,
Araucaria angustifolia (Bert.) O. Kuntze (Araucaria brasiliensis), known as Paraná pine, is the sole native gymnosperm of the Atlantic forest in Brazil and has great economic, cultural and social importance. Its seed, known as pinhão, has been consumed since prehistoric times. Besides the nutritional aspects, different parts of A. angustifolia are also used in the Brazilian folk medicine for the treatment of rheumatism, respiratory infections, fatigue, anemia, among other disorders. Timber exploration ...
Tópico(s): Plant-Derived Bioactive Compounds
2016 - Elsevier BV | Trends in Food Science & Technology
Produção Nacional
Revisado por pares
Júlia Harumi Iyda, Ângela Fernandes, Flávio Dias Ferreira, Maria José Alves, Tânia C. S. P. Pires, Lillian Barros, Joana S. Amaral, Isabel C.F.R. Ferreira,
Recently, there has been an interest regarding the consumption of wild edible plants in modern diets. However, there is still scarce information about several wild vegetables traditionally consumed. Therefore, this work aims on documenting the nutritional and chemical composition of wild radish (Raphanus raphanistrum L.), as well as its bioactive potential. Results showed that wild radish is a potential source of beneficial compounds, including vitamin E, polyunsaturated fatty acid (particularly α- ...
Tópico(s): Phytochemical and Pharmacological Studies
2018 - Elsevier BV | Food Research International
J. Ayres de Campos, J. M. Gil, P. J. Mendes, Liliana P. Ferreira, Isabel C.F.R. Ferreira, N. Ayres de Campos, Pedro Estrela, M. Godinho, M. Bououdina, A. Collomb, D. Fruchart, J.L. Soubeyroux, S. Takele, J. Pelloth, R. A. Brand,
Tópico(s): Rare-earth and actinide compounds
1996 - Elsevier BV | Journal of Magnetism and Magnetic Materials
Raquel Kissanga, Ângela Liberal, Inês Diniz, Ana Rodrigues, J. L. Baptista-Ferreira, Dora Batista, Marija Ivanov, Marina Sokóvić, Isabel C.F.R. Ferreira, Ângela Fernandes, Lillian Barros, L. Catarino,
The harvesting, processing, and sale of wild edible mushrooms (WEM) is a relevant economic activity in Angola and a good example of the use of non-wood forest products for food. Although there is deep traditional knowledge about the general properties of WEMs, a huge gap remains in detailed scientific knowledge. Thus, this study aimed to investigate the socio-economic importance of the species sold at local markets in Huila, Angola, from their molecular identification to the assessment of their nutritional, ...
Tópico(s): Phytochemicals and Antioxidant Activities
2022 - Multidisciplinary Digital Publishing Institute | Foods
Isabel C.F.R. Ferreira, Lillian Barros, Rui M.V. Abreu,
Maintenance of equilibrium between free radical production and antioxidant defences (enzymatic and non enzymatic) is an essential condition for normal organism functioning. When this equilibrium has a tendency for the production of free radicals we say that the organism is in oxidative stress. In this situation, excess free radicals may damage cellular lipids, proteins and DNA, affecting normal function and leading to various diseases. In aerobic organisms, the free radicals are constantly produced ...
Tópico(s): Phytochemicals and Antioxidant Activities
2009 - Bentham Science Publishers | Current Medicinal Chemistry
Hugo J.C. Froufe, Rui M.V. Abreu, Isabel C.F.R. Ferreira,
Wild mushrooms have been described as sources of natural antioxidants, particularly phenolic compounds. However, many other compounds present in wild mushrooms can also act as antioxidants (reducers), so whole extracts from a wide range of species need to be examined. To gain further knowledge in this area, the relationship between the antioxidant potential (scavenging effect and reducing power) and chemical composition of twenty three samples from seventeen Portuguese wild mushroom species was investigated. ...
Tópico(s): Essential Oils and Antimicrobial Activity
2009 - Taylor & Francis | SAR and QSAR in environmental research
João C.M. Barreira, Isabel C.F.R. Ferreira, M. Beatriz P.P. Oliveira, José Alberto Pereira,
ABSTRACT In order to determine the optimum operational conditions for phenols extraction, a series of assays were performed in the Guara variety of almond (Prunus dulcis). Four variable operational conditions factors were considered: solvent type, solvent volume, temperature and extraction time. Phenols extracts antioxidant properties were evaluated, either chemically, by screening the free radical scavenging activity, or biochemically, by measuring the inhibition of thiobarbituric acid reactive ...
Tópico(s): Plant biochemistry and biosynthesis
2009 - Wiley | Journal of Food Biochemistry
João C.M. Barreira, José Alberto Pereira, M. Beatriz P.P. Oliveira, Isabel C.F.R. Ferreira,
Tópico(s): Fermentation and Sensory Analysis
2009 - Springer Science+Business Media | Plant Foods for Human Nutrition