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| Registros recuperados: 101 | |
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| Balois-Morales,Rosendo; Jiménez-Zurita,José Orlando; Alia-Tejacal,Irán; López-Guzmán,Graciela Guadalupe; Palomino-Hermosillo,Yolotzin Apatzingán; Sánchez-Herrera,Leticia Mónica. |
| Abstract The changes in concentration of vitamin C, enzymatic and antioxidant activity during the ripening of two soursop selections (G1 and G2) at room temperature (22 ºC) and refrigeration (15 ºC) with an HR 85% were evaluated. The content of soluble protein, the activity of catalase (CAT), superoxide dismutase (SOD), peroxidase (POD), the concentration of vitamin C, as well as the antioxidant activity was evaluated by DPPH, ABTS and FRAP methods. The initial soluble protein concentration of the G1 and G2 selections diminished at 22 and 15 °C during ripening. Fruits stored at 22 °C showed the highest CAT activity. The maximum activity of SOD was recorded on the sixth and fourth day in fruits stored at 22 and 15 ºC, respectively. Fruits stored at 22 °C... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annona muricata; Ripening; Enzymatic activity; Antioxidant activity; Refrigeration. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000100303 |
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| SIQUEIRA,AMANDA DE MORAIS OLIVEIRA; MOREIRA,ALDENISE CHAGAS CURVÊLO GONÇALVES; MELO,ENAYDE DE ALMEIDA; STAMFORD,THAYZA CHRISTINA MONTENEGRO; STAMFORD,TÂNIA LÚCIA MONTENEGRO. |
| ABSTRACT Healthy eating is associated with the consumption of fruits, which are notable for their beneficial effects on human health. The aim of this study was to evaluate the proximate composition, composition of fibers and components with antioxidant activity in soursops varieties Crioula, Lisa and Morada of physiological maturity (PM) and mature (M). The protein, lipid and moisture contents did not differ between soursop varieties, but the ash contents were higher in the Morada-PM (0.56%±0.03) and the Morada-M (0.82%±0.10) varieties. The Crioula-M variety showed higher levels of total dietary fibre (5.76%±0.12). The Lisa-M variety showed higher levels of insoluble dietary fibre (4.46%±0.00). The Lisa-M variety also showed a higher level of phenolic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical fruit; Dietary fibre; Phenolics; Antioxidant activity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452015000401020 |
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| SILVA,MARLON JOCIMAR RODRIGUES DA; BRUNELLI,LUCIANA TREVISAN; MOURA,MARA FERNANDES; HERNANDES,JOSÉ LUIZ; LEONEL,SARITA; TECCHIO,MARCO ANTONIO. |
| ABSTRACT It has been demonstrated that rootstocks can influence grape characteristics, but there are few data in literature about the rootstocks influence in the wine characteristics, especially in wines elaborated with Vitis labrusca or hybrid grapes. This study evaluated the influence of ‘IAC 766’ and ‘106-8 Mgt’ rootstocks on the physicochemical characteristics of ‘Bordô’, ‘Isabel’ and ‘IAC 138-22 ‘Máximo’ musts and wines. The musts were evaluated for pH, soluble solids, total acidity and soluble solids/acidity ratio. The wines were evaluated for density, alcohol content; total, volatile and fixed acidity; pH, dry extract, reducing sugars, reduced dry extract, alcohol in weight/reduced dry extract; free and total sulfur dioxide; anthocyanins,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis sp.; Table wine; Classical analysis; Phenolic compounds; Antioxidant activity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000400201 |
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| Soto Chavarro,Erika Lorena; Chicué,Adriana Maria; Murillo Perea,Elizabeth; Méndez Arteaga,Jonh Jairo. |
| Introduction: the idea to explore at least some of the regions diversity such as the Colombian Orinoco through bioprospecting study of Lacmellea standleyi (Woodson) Monach. arises as a consequence of ignorance of much of the floristic richness in Colombia and the potential relevance of much of this in the nutrition, health and industry. Objective: to evaluate the antioxidant potential, nutritional and phenolic content, antimicrobial activity, and safety degree of aqueous, ethanol, and ethyl acetate extracts of Lacmellea standleyi fruits in three different ripening stages. Methods: the nutritional value was evaluated using standardized methods to full fruit in its three ripening stages. Each of the extracts was chemically characterized by spectrophotometric... |
| Tipo: Journal article |
Palavras-chave: Lacmellea standleyi; Nutritional content; Bioactive metabolites; Antioxidant activity. |
| Ano: 2013 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962013000300009 |
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| Guerrero,Ricardo O; Mahmud,T; Khan,H; Casañas,Bárbara; Morales,Mara. |
| Summary Bangladesh is an Asian country where only 20 per cent of the people are provided with modern healthcare services while the rest 80 per cent are dependent on traditional plant-based systems. Moreover, it is estimated that only 500 medicinal plant species had been recorded in Bangladesh out of 1,900 species regarded as having medicinal value. Purpose: Sixteen collections of medicinal plants of different families were extracted with several solvents (Ethanol 95%, water, chloroform, ethyl ether). The resulting extracts were subjected to five different specific bioassays: 1. Brine shrimp lethality test; 2. Antioxidant activity; 3. Inhibition of xanthine oxidase (XO); 4. Inhibition of ß-glucosidase, and 5. Inhibition of acetylcholinesterase. Methods.... |
| Tipo: Journal article |
Palavras-chave: Bangladesh; Plant extracts; Brine shrimp lethality test; Antioxidant activity; Xanthine oxidase inhibition; SS-glucosidase inhibition; Acetylcholinesterase inhibition. |
| Ano: 2004 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962004000200009 |
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| Chulaluck Charunuch; Plerncha Tangkanakul; Saovaluk Runggaeng. |
| Owing to creation of Thai rice snack with health benefits for higher potential in commercial scale, mulberry leaf was applied in the production of extruded snack product. Mulberry leaf in dried powder was mixed with rice, corn, soy, sugar, oil, vitamins and minerals to investigate the operating conditions with twin-screw extruder at varying mulberry content (5, 7.5 and 10%), screw speed (300 and 350 rpm) and feed moisture (13, 15 and 17%) in the 3 × 2 × 3 factorial experiment. The extrudates were examined of functional properties (antioxidant activity and phenolic compounds) and some physical characteristics (expansion ratio, bulk density, texture measurement and organoleptic test). The results had shown that at higher mulberry content (10%), the product... |
| Tipo: PhysicalObject |
Palavras-chave: Mulberry; Extruded snack; Antioxidant activity; Phenolic compounds; หม่อน; ฤทธิ์ต้านอนุมูลอิสระ; สารฟีโนลิก; เอ็กซ์ทรูดเดอร์; ผลิตภัณฑ์ขนมขบเคี้ยว; ผลิตภัณฑ์แปรรูปจากข้าว; คุณภาพทางประสาทสัมผัส. |
| Ano: 2006 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5256 |
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| Nattawat Thitipramot; Nisakorn Sae-won; Phanuphong Chaiwut; Punyawatt Pintathong; Nont Thitilertdecha; Natthanej Luplertlop; Asadhawut Phiranrat. |
| The objective of this study was to determine proanthocyanidins and anthocyanins content and their antioxidant activity from four pigmented rice: Black glutinous, Homnin, Man-Pu, Sangyod by extract with 6 different solvents: DI water, 1%HCl-DI water, Ethanol, 1%HCl-Ethanol, Acetone, 1%HCl-Acetone. The results showed that the proanthocyanidin and anthocyanin contents were different between rice phenotypes and polarity of solvents (p<0.05). The total proanthocyanidin contents followed the order: Man-Pu, Sangyod, Homnin, Black glutinous. The highest proanthocyanidin content was found in ethanolic extract of Man-Pu rice (0.938 mg ECE/mg extract). Black glutinous rice contained high amount. Total anthocyanin content of the extracts followed the trend: Black... |
| Tipo: PhysicalObject |
Palavras-chave: Man pu rice; Sangyod rice; Black glutinous rice; Hom nin rice; Pro anthocyanin; Anthocyanin; Antioxidant activity; Pigmented rice; ข้าวมันปู; ข้าวสังข์หยด; ข้าวเหนียวดำ; ข้าวหอมนิล; โปรแอนโทไซยานิน; แอนโทไซยานิน; ฤทธิ์ต้านอนุมูลอิสระ. |
| Ano: 2012 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5427 |
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| Pakinee Akkaravessapong; Suganya Wongpornchai; Sunanta Wongpiyachon; Kitsada Pitija; Angsutorn Wasusun; Panawan Suttiarporn. |
| Rice contains several kinds of bio-functional components. In this study, γ-aminobutyric acid (GABA) and Tocopherol, or Vitamin E were identified and their relationships to antioxidant activity using DPPH assay of both brown and pre germinated Thai rice varieties were studied. GABA are one of the two inhibitory neurotransmitters which make the neuron resistant to stimulation by excitatory neurotransmitters and inhibitor of some cancer cells activity whereas Tocopherol, or Vitamin E, which acts as antioxidant and improve blood cholesterol. Identification of GABA and Tocopherol in both brown and pre-germinated brown rice grown from different locations were conducted in eleven varieties, namely: Khao Dawk Mali 105, PTT1, CN1, RD31, Sang yod, RD6, Hom... |
| Tipo: PhysicalObject |
Palavras-chave: Antioxidant activity; Rice varieties; Tocopherol; DPPH assay; Brown rice; Pre-germinated brown rice; GABA; Gamma aminobutyric acid; Vitamin e; Nutritive value; Chemical composition; High performance liquid chromatography; HPLC; ฤทธิ์ต้านอนุมูลอิสระ; กาบา; โทโคฟีรอล; พันธุ์ข้าว; ข้าวกล้อง; ข้าวกล้องงอก; วิตามินอี; โครงสร้างทางเคมี; การวิเคราะห์องค์ประกอบทางเคมี; คุณค่าทางโภชนาการ. |
| Ano: 2013 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5713 |
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| Queiroz-Nazareno,Lailla Sabrina; Alcântara de Miranda,Maria Raquel; Alves-Pinto,Maria Ketully Neyane; Almeida-Lopes,Monica Maria; Moura-Rufino,Maria do Socorro. |
| Abstract The objective of this work was to identify and evaluate the bioactive compounds, as well as the antioxidant potential, present in mature fruits of cambuizeiro (Myrcia multiflora) from the Chapada do Araripe, Brazil. In the fruits were evaluated: vitamin C, total anthocyanins, yellow flavonoids, total polyphenols, total antioxidant activity by the FRAP, DPPH and ABTS methods, and the antioxidant superoxide dismutase (SOD) and catalase (CAT) activity. Cambui had an average vitamin C content of 56.40 mg/100 g, 2869.44 mg/100 g total anthocyanins 2858.50 mg/100 g yellow flavonoids and 1007.64 mg EAG/100 g of total polyphenols. While the total antioxidant activity according to FRAP method was 123.94 μM ferrous sulphate/g, DPPH was 1805.66 g/g EC50,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Bioactive compounds; Plant extractivism; Myrcia multiflora; Myrtacea. |
| Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000100016 |
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| Santos, Marli da Silva; Universidade Federal do Paraná; Lima, Jair José de; Universidade Federal do Paraná; Petkowicz, Carmen Lúcia de Oliveira; Universidade Tecnológica Federal do Paraná; Cândido, Lys Mary Bileski; Universidade Federal do Paraná/Universidade Tecnológica Federal do Paraná. |
| Four formulations of gabiroba jam were processed, and their physicochemical and functional characteristics, rheological profile and jam acceptance were assessed. The physicochemical and chemical characteristics evaluated were water activity, titratable acidity, pH, reducing and non-reducing sugars, proteins, ashes, dietary fibers, color, and firmness. For functional analyses of the formulations, vitamin C, phenolic compounds and carotenoid contents were determined. The ABTS+ and DPPH· methods were employed to evaluate the antioxidant potential. Rheological analysis was performed in a HAAKE RS 75 Rheoestress rheometer with a plate/plate sensor. The flow curve behavior was adjusted using the Power Law and Herschel-Bulkley models. Sensory analyses were... |
| Tipo: Pesquisa |
Palavras-chave: 5.00.00.00-4; 5.02.04.00-9; 5.02.02.00-6 gabiroba; Jam; Antioxidant activity; Rheological profile ciências agrarias; Ecnologia e Utilização de Produtos Florestais; Manejo Florestal. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/14389 |
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| Soares, Jefferson de Jesus; Rosa, Anderson da Silva; Motta, Paola Ribeiro; Cibin, Francielli Weber Santos; Roehrs, Rafael; Denardin, Elton Luís Gasparotto. |
| The aim of this study was to evaluate the protective effect of three different extracts prepared from Syzygium cumini leaves against paraquat-induced toxicity in Saccharomyces cerevisiae strains deficient in superoxide dismutase (SOD). Additionally, the extracts phenolic and flavonoid contents, in vitro antioxidant activity, and phytochemical composition (using high-pressure liquid chromatography) were determined. Bioactive compounds from S. cumini leaves were extracted with infusion (traditional method) or ultrasound (aqueous or hydroalcoholic). Compared to the infusion extract, the ultrasound extracts exhibited a greater protective capacity against paraquat toxicity in the yeast cells as well as higher antioxidant activity. These results may be directly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Traditional medicine; Antioxidant activity; Phenolic compounds; Flavonoids; Syzygium cumini; Saccharomyces cerevisiae.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/47139 |
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| Guiné, Raquel P.F.; Mendes, Mateus; Gonçalves, Fernando. |
| The present work used Artificial Neural Network (ANN) models to correlate beetroot extraction conditions with total phenolic compounds (TPC), anthocyanins (ANT) and antioxidant activity (AOA). The input variables were extraction time, type of solvent, solvent volume/sample mass (VMR) and order of extraction. The ANN models produced showed very good accuracy (R > 94 %), being suitable for data mining using weight analysis techniques. The experiments involved variable conditions: solvents (Methanol, ethanol:water and acetone:water), extraction times (15 and 60 min), VMR (5, 10 and 20), order of extract (3 sequential extractions). The TPC were evaluated by the Folin-Ciocalteu method, ANT by the SO2 bleaching method and AOA following the ABTS method. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food Science; Food Chemistry Phenolic compounds; Antioxidant activity. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5449 |
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| Dawood, Mona Gergis. |
| Two field experiments were conducted during two successive seasons (2014/2015 and 2015/2016) at the Experimental Station of National Research Centre, Nubaria district, Beheira Governorate, Egypt, to study the effect of foliar treatment of quinoa plants with trehalose (Tre) (100µM and 500µM) on growth, photosynthetic pigments, seed yield quantity & quality, in fever of nutritional and antioxidant compounds in the yielded quinoa seeds which subjected to water deficiency (skipping two irrigation times at 50 & 60 days after sowing). Water deficiency caused marked decreases in quinoa plant growth parameters (shoot height, fresh and dry weights of shoot/plant) and photosynthetic pigments with marked increases in root growth parameters (root length, fresh... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Drought; Flavonoids; Oil; Phenolics; Protein; Quinoa; Trehalose. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4539 |
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| Silva,Tania M.S.; Camara,Celso A.; Lins,Antonio C.S.; Agra,Maria de Fátima; Silva,Eva M.S.; Reis,Igor T.; Freitas,Breno M.. |
| Stingless bees in Brazil are indigenous and found all over the country. Bee pollen is used for its nutritional value in the human diet. It is made up of natural flower pollen mixed with nectar and bee secretions. In order to evaluate the chemical composition, free radical scavenging activity, and botanical origin, sample of pollen loads from stingless bee, Melipona rufiventris (Uruçu amarela) was studied. The EtOAc extract of pollen of Melipona rufiventris yielded the following compounds: p-hydroxycinnamic acid, dihydroquercetin, isorhamnetin, isorhamnetin3-O-(6"-O-E-p-coumaroyl)-β-D-glucopyranoside, luteolin, and quercetin. This is the first report of the isolation of isorhamnetin3-O-(6"O-E-p-coumaroyl)β-D-glucopyranoside from pollen. The free... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Bee pollen; Flavonoids; Melipona rufiventris; Uruçu amarela. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200003 |
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| ALPAY,MERVE; DULGER,GORKEM; SAHIN,IBRAHIM E.; DULGER,BASARAN. |
| Abstract: In this study, the antimicrobial, antioxidant and antitumor activity of ethanol extracts obtained from Phlomis russeliana (Sims.) Lag. ex Benth. (Lamiaceae) were evaluated. Disc diffusion and microdilution methods were used to test the extracts for antimicrobial activity against seven bacteria strains (Bacillus cereusATCC 7064, Bacillus subtilisATCC 6633, Staphylococcus aureusATCC 6538P, Escherichia coliATCC 10538, Proteus vulgarisATCC 6899, Salmonella typhimuriumCCM 5445 and Pseudomonas aeruginosaATCC 27853) and four yeast strains (Kluyveromyces fragilisATCC 8608, Rhodotorula rubraATCC 70403, Debaryomyces hanseniiDSM 70238 and Candida albicansATCC 10239). Notably, they were more effective against the yeast strains than the bacterial strains. Of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phlomis russeliana; Antioxidant activity; Cytotoxic effect; Antimicrobial activity; Endemic plant. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500604 |
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| Registros recuperados: 101 | |
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