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A new enzymatic process for the treatment of phenolic pollutants BABT
Palma,Mauri Sergio Alves; Horn,Harald; Zilli,Mario; Pigatto,Gisele; Converti,Attilio.
This work aimed to develop a new economic enzymatic process to treat the phenolic pollutants using pure tyrosinase in stirred vessel and adopting temperature (T), pH, rotational speed (N), initial phenol (C P,o) and enzyme (C T) concentrations as independent variables. Experimental data of the residual phenol concentration (C P) were used to calculate the oxidation efficiency (η), initial oxidation rate (-r o) and time required to reach the end of reaction (t) that were selected as the responses. Under the optimal conditions (T = 45°C, pH 6.6, N = 400 rpm, C P,o = 100 ppm and C T = 50 U/mL), η was 88.1%, -r o = 10.2 mg L-1 min-1, t = 40 min. These results suggested that tyrosinase-rich crude extracts from vegetable byproducts could be quite promising.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenols; Tyrosinase; Wastes; Enzymatic treatment.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400016
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Actividad de pal, acumulación de fenoles y flavonoides en el chile CM-334 infectado por Nacobbus aberrans e inoculado en el follaje con Phytophthora capsici. Colegio de Postgraduados
Sandoval Luna, Ruth.
Se evaluó la respuesta del chile (Capsicum annuum) CM-334 infectado con Nacobbus aberrans (Na) y en el follaje inoculado con diferentes tipos de inoculación de Phytophthora capsici. En plantas completas o con el tallo decapitado se inoculo micelio, en el follaje zoosporas asperjadas, por inmersión en una suspensión de zoosporas y también en la raíz. Se tuvieron experimentos con plantas susceptibles (var. Joe E. Parker) y resistentes (CM-334), infectadas o sin infectar con N. aberrans y 21 días posteriores a la inoculación (pi) con el nematodo se inocularon con P. capsici; bajo un diseño completamente al azar en cámaras bioclimáticas. De los 5 a los 30 días pi con el oomiceto (pio) se registró la longitud de necrosis (cm), la colonización de hoja, tallo o...
Palavras-chave: Chile CM-334; Fenoles; Flavonoides; PAL; Micelio; Phytophthora capsici; Follaje; Nacobbus aberrans; Zoosporas; Pepper CM-334; Phenols; Flavonoids; Mycelium; Foliage; Zoospores; Fitopatología; Doctorado.
Ano: 2011 URL: http://hdl.handle.net/10521/612
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Antiproliferative activity in tumor cell lines, antioxidant capacity and total phenolic, flavonoid and tannin contents of Myrciaria floribunda Anais da ABC (AABC)
TIETBOHL,LUIS A.C.; OLIVEIRA,ADRIANA P.; ESTEVES,RICARDO S.; ALBUQUERQUE,RICARDO D.D.G.; FOLLY,DIOGO; MACHADO,FRANCISCO P.; CORRÊA,ARTHUR L.; SANTOS,MARCELO G.; RUIZ,ANA L.G.; ROCHA,LEANDRO.
ABSTRACT Myrciaria floribunda (H. West ex Willd.) O. Berg, Myrtaceae, is a native plant species of the Atlantic Rain Forest, from north to south of Brazil. The lyophilized ethyl acetate extract from the leaves of M. floribunda was investigated for its antiproliferative activity in tumor cell lines, antioxidant capacity and its total phenolic, flavonoid and tannin contents. Antiproliferative activity was tested in vitro against seven human cancer cells and against immortalized human skin keratinocytes line (HaCat, no cancer cell). Antioxidant activity was determined using 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and oxygen radical absorbing capacity (ORAC) assays and total phenolic, flavonoid and tannin contents were determined by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antiproliferative; Flavonoids; Myrciaria floribunda; Phenols.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301111
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Antiviral activities of extracts and phenolic components of two Spondias species against dengue virus J. Venom. Anim. Toxins incl. Trop. Dis.
Silva,Ara; Morais,SM; Marques,MMM; Lima,DM; Santos,SCC; Almeida,RR; Vieira,IGP; Guedes,MIF.
In recent years, the search for natural plant products to fight viral diseases has been increasing. In this work, two Spondias species, namely S. mombin and S. tuberosa, found in Ceará state (Brazil), and their main phenolic components were evaluated against dengue virus. In vitro antiviral tests were performed against type-2 dengue virus by the MTT method and standard cytopathic effect reduction assay in C6/36 cells. Cytotoxicity was also evaluated by MTT. The presence of phenolic compounds quercetin, rutin, and ellagic acid in plant extracts was characterized by HPLC analysis. Both Spondias species extracts and components were nontoxic to the cells whereas rutin and quercetin displayed relevant antiviral activity with IC50 of 362.68 µg/mL and 500 µg/mL,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural products; Phenols; Dengue; Antiviral agents.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000400007
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Basic density and pulp yield relationship with some chemical parameters in eucalyptus trees PAB
Seca,Ana Maria Loureiro da; Domingues,Fernando Manoel de Jesus.
The objective of this work was to evaluate the use of basic density and pulp yield correlations with some chemical parameters, in order to differentiate an homogeneous eucalyptus tree population, in terms of its potential for pulp production or some other technological applications. Basic density and kraft pulp yield were determined for 120 Eucalyptus globulus trees, and the values were plotted as frequency distributions. Homogenized samples from the first and fourth density quartiles and first and fourth yield quartiles were submitted to total phenols, total sugars and methoxyl group analysis. Syringyl/guaiacyl (S/G) and syringaldehyde/vanillin (S/V) ratios were determined on the kraft lignins from wood of the same quartiles. The results show the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus globulus; Syringyl; Guaiacyl; Phenols; Methoxyl group; Kraft pulping.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001200001
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Characterization and biological activity of condensed tannins from tropical forage legumes PAB
Pereira,Tatiana Pires; Modesto,Elisa Cristina; Nepomuceno,Delci de Deus; Oliveira,Osniel Faria de; Freitas,Rafaela Scalise Xavier de; Muir,James Pierre; Dubeux Junior,José Carlos Batista; Almeida,João Carlos de Carvalho.
Abstract: The objective of this work was to characterize condensed tannins (CT) from six tropical forage legumes and to determine their biological activity. The monomers propelargonidin, prodelphinidin and procyanidin were analyzed, as well as extractable condensed tannin (ECT), protein-bound CT (PBCT) and fiber-bound CT (FBCT), molecular weight, degree of polymerization, polydispersity index, and biological activity by protein precipitate by phenols (PPP) of leaves of the legumes Cajanus cajan, Gliricidia sepium, Stylosanthes capitata x Stylosanthes macrocephala (stylo), Flemingia macrophylla, Cratylia argentea, and Mimosa caesalpiniifolia, and of the bark of this latter species. Differences were observed in the concentrations of ECT, PBCT, PPP, and total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forage legumes; Phenols; Procyanidins; Prodelphinidins; Protein.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000901070
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Chemical interaction between white onion, as natural antioxidant, on shrimp stored under freezing Ciênc. Tecnol. Aliment.
LIRA,Giselda Macena; LOPEZ,Ana Maria Queijeiro; NANES,Gabriela Marques de Farias; SILVA,Fernanda Geny Calheiros.
Abstract The impact of white onion as a natural antioxidant on the lipid profile of “Vila Franca” shrimp (Litopenaeus schmitti Burkenroad, 1938), during storage under freezing, was evaluated by changes in the composition of fatty acids, carotenoids, centesimal composition and phenols. The lipid content in the shrimp samples in natura and with white onion was dimmed after 45 days of storage under freezing. At zero time and during storage, lower levels of fatty acids were detected in the shrimp with addition of white onion. There was a reduction in the total carotenoid content of fresh and white onion shrimp samples after 45 days of storage, corresponding to 30% and 43%, respectively. After 90 days of storage, was detected a loss of 28%, in the samples with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Vegetables; Fatty acids; Centesimal composition; Phenols.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600535
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Comparison of phenol content and antioxidant capacity of nuts Ciênc. Tecnol. Aliment.
Abe,Lucile Tiemi; Lajolo,Franco Maria; Genovese,Maria Inés.
Frequent nut intake is associated with protective effects against cardiovascular diseases. In addition to the generally high contents of unsaturated fatty acids, polyphenol compounds seem to be also implicated in health promoting effects of nuts due to their antioxidant properties. In this way, eleven different kinds of nuts, including pinhao seeds (Araucaria angustifolia) and Brazil nuts (Bertholletia excelsa), typical of Brazil, were analyzed for the content of phenol compounds, including the potent anti-mutagenic and anti-cancer ellagic acid, and antioxidant capacity of methanolic extracts. The antioxidant capacity varied a hundred times among the different nuts, from 1.2 to 120 mg of Trolox equivalents.100 g-1 (FW). Total ellagic acid was determined...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidant capacity; Ellagic acid; Phenols; Nuts; Pinhao seeds; Brazil nuts.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000500038
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Der Abbau von p-Hydroxybenzoesäure, Protocatechusäure und Gallussäure im Boden OceanDocs
Kunze, Ch..
La velocidad de descomposición de tres fenólicos, el p-hidroxibenzoico, el protocatecúico y el gálico, los cuales se diferencian en el número de grupos OH, fue investigada en el suelo. Con el aumento de grupos OH aumenta también la velocidad de descomposición microbial. El ácido gálico se descompone más rápido que el protocatecúico y este a su vez más rápido que el phidroxibenzoico.
Tipo: Journal Contribution Palavras-chave: Phenols; Chemistry; Phenols; Chemistry; Http://aims.fao.org/aos/agrovoc/c_13300; Http://aims.fao.org/aos/agrovoc/c_1522.
Ano: 1972 URL: http://hdl.handle.net/1834/3430
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Effect of Salicylic Acid, 2,4-D and 2i-P on the Production of Secondary Metabolites in Garcinia brasiliensis Mart. Callus BABT
Teixeira,Maria Gessi; Carvalho,Marília; Leite,Marco Aurélio; Barbosa,Sandro; Santos filho,Plinio Rodrigues dos; Santos,Breno Régis.
Abstract The aim of this work was to evaluate the effect of Salicylic acid, 2,4-D and 2-iP on the production of total phenolic and flavonoids as well in the levels of fukugetin and 7-epiclusianone in callus of Garcinia brasiliensis zygotic embryos. For this, Bacupari callus were exposed to different concentrations (0.0; 0.1; 1; 10; 100 µM) of Salicylic acid (SA) in the presence or in the absence of 72 μM 2-iP and 28.73 μM 2,4-D. The highest concentration of total phenolic occurred in the treatment with 100 μM SA in callus subcultured in the absence of 2,4-D and 2-iP, and with 10 μM SA in callus subcultured in the presence of these regulators. Concerning flavonoids, 2,4-D and 2-iP supplementation without the presence of the SA was sufficient for the highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacupari; Phenols; Flavonoids; 7-epiclusianone; Fukugetin.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100407
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Effect of storage on the bioactive compounds, nutritional composition and sensory acceptability of pitanga jams Ciênc. Tecnol. Aliment.
TOBAL,Thaise Mariá; RODRIGUES,Lais Veras.
Abstract Conventional and diet pitanga jams were prepared to assess the stability of bioactive compounds over 320 days of storage. The diet jam exhibited a higher nutritional value and bioactive compound content than the conventional jam. None of the tested jam formulations exhibited major changes in physical and nutritional characteristics during storage. However, the bioactive compound content and antioxidant activity were significantly reduced after processing pulp into jam and over the course of storage. Storage also had an effect on the sensory quality of the products. The conventional jam had higher flavour acceptance, whereas the diet jam exhibited lower scores for colour, appearance and overall acceptance.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carotenoids; Ascorbic acid; Phenols; Anthocyanins; Antioxidant activity; Component modification.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600581
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Effects of Allelochemicals from Ficus microcarpaon Chlorella pyrenoidosa BABT
Jiang,Zhongyang; Peiyong,Guo; Chang,Cheinchi; Gao,Lili; Li,Shixiong; Wan,Jinjin.
This study was performed in order to isolate and identify unknown allelochemicals from Ficus microcarpa, and to investigate the inhibitory to bloom-forming of green alga Chlorella pyrenoidosa. Through gradient elution, fraction C2, whose inhibition of alga growth in diverse extracts was the strongest was shown to cause significant reductions of maximum quantum yield, as well as electron transport rates of C. pyrenoidosa. The study data also showed that the increase of fraction C2 concentration decreased the activity of total superoxide dismutase (SOD), but increased the activities of catalase (CAT) and malondialdehyde (MDA) content. These results demonstrate that the active fraction C2 not only induced the photoinhibition or photodamage of PSII reaction...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allelochemical; Phenols; Photosynthesis; Ficus microcarpa; Chlorella pyrenoidosa.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000400595
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Elaboration of food products with biofortified sweet potatoes: characterization and sensory acceptability. Repositório Alice
SANTOS, F. N. dos; DUARTE, L. N.; SAMBORSKI, T.; MELLO, A. F. S.; KRINGEL, D. H.; SEVERO, J..
Beauregard sweet potato is an orange color crop rich in β-carotene, a precursor of vitamin A. β-carotene improve immunity and decrease of incidence of degenerative diseases. The objective of this work was to introduce sweet potato in the diet through of some food products, such as bread, cake and sweets. The effect of processing on the chemical composition, as well as the quantification of phenols and total carotenoids, antioxidant activity, and sensory acceptability were evaluated. Cakes and coconut sweets presented higher levels of carotenoids. Higher phenolic and antioxidant activity were verified in cocoa sweets. All foods had good acceptability: 86% for bread, 83.3% for cake and 84,4%, and 86% for coconut and cocoa sweets,...
Tipo: Artigo de periódico Palavras-chave: Carotenóide; Vitamina A; Antioxidant activity; Cakes; Phenols; Sweets; Sweet potatoes.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130067
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Establishment and content of sugars and phenols in Physalis callus obtained from different explants and concentrations of bap and naa - doi: 10.4025/actascibiolsci.v36i1.18074 Biological Sciences
Bertoncelli, Douglas Junior; Universidade Tecnológica Federal do Paraná; Oliveira, Marisa de Cacia; Universidade Tecnológica Federal do Paraná; Passos, Amanda Izabel dos; Universidade Tecnológica Federal do Paraná; Ariati, Ana Claudia; Universidade Tecnológica Federal do Paraná; Ortolan, Alexandre Osmar; Universidade Tecnológica Federal do Paraná; Witt, Elaine de Paula; Universidade Tecnológica Federal do Paraná.
Obtaining cells of Physalis pubescens is of interest for studies of primary and secondary metabolic pathways, in the search for new active molecules. Our objectives were to evaluate the regeneration potential of explants from different parts of the plant, growth regulators to be used, and the determination of the growth curve of the callus. We used explants of leaf, root, stem and petiole, cultured on Murashige and Skoog medium with different concentrations of 6-benzylaminopurine and a-naphthaleneacetic acid. The explants from stem and petiole had a higher regeneration potential of the shoot to the treatment with 0.5 mg L-1 6-benzylaminopurine, and the explants of leave and root emitted more roots, with lower production of callus. The tests showed that the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.03.00.00-0 cell; Growth; Phenols; Sugars Botânica-biotecnologia.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18074
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False positives for tannin sorghum in non-tannin sorghum using the bleach test Open Agri
Awika, J. McDonough, C.M..
Palavras-chave: Organic acids; Pigments; Sorghum; Phenols; Anthocyanins; Aromatic compounds; Sampling; Grain; Environmental degradation; Environmental factors.
Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3240
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Identificación, dispersión, histopatología e impacto económico de Armillaria en aguacate en Charapan, Michoacán. Colegio de Postgraduados
Michua Cedillo, Jeny.
La identificación, dispersión e impacto económico de Armillaria sp. en aguacate Hass se estudió en el municipio de Charapan, Michoacán. Armillaria se aisló de raíces de árboles sintomáticos y muertos y se cultivó en BDS. La identificación de la especie se realizó por compatibilidad somática y amplificación de la región IGS-I del ADN ribosomal de 19 aislamientos. Los apareamientos dieron como resultado un solo grupo de compatibilidad; los confrontamientos se realizaron con A. mellea, A. gallica y A. mexicana, donde se observó la separación de las colonias. Las pruebas de patogenicidad se realizaron inoculando 35 plántulas de aguacate en condiciones de invernadero. Las raíces de las plántulas infectadas y de los árboles infectados naturalmente en campo se...
Palavras-chave: Compatibilidad somática; Dispersión; Fenoles; IGS; Incidencia; Inoculación; Rizomorfos; Somatic compatibility; Dispersion; Phenols; Incidence; Inoculation; Rhizomorphs; Fitopatología; Maestría.
Ano: 2014 URL: http://hdl.handle.net/10521/2218
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Lipids, proteins, phenolic composition, antioxidant and antibacterial activities of seeds of peanuts (Arachis hypogaea l) cultivated in Tunisia Biol. Res.
Sebei,Khaled; Gnouma,Asma; Herchi,Wahid; Sakouhi,Faouzi; Boukhchina,Sadok.
Fatty acid composition of peanut seed oil in four varieties cultivated in Tunisia showed that linoleic (C18:2), oleic (C18:1) and palmitic (C16) acids account for more than 84% for Chounfakhi and Massriya and for more than 85% of the total fatty acids of Trabilsia and Sinya seed oil respectively. Seed oil contents were significantly different (P ≤ 0.05) and did not exceed 48%. The study of total phenolics revealed that Chounfakhi contained more total phenolics (2.1 mg GAE/g DW), followed by the Massriya and Sinya cultivars (1.35 mg GAE/g DW for each); Trabilsia presented the lowest total phenolic content with 1 mg GAE/g DW. Considerable antiradical ability was found, especially in the Trabilsia peanut seed cultivar (IC50 = 1550 μg/ml),...
Tipo: Journal article Palavras-chave: Arachis hypogea; Oil; Sterols; Phenols; Antioxidant activity; Antibacterial activity.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300006
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Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee REA
Bruno,Marcelo; Oliveira,Roberto A. de.
In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Methane; Nitrogen; Phosphorus; Phenols.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400020
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Phytochemical Evaluation of Wild and Cultivated Pepper (Capsicum annuum L. and C. pubescens Ruiz & Pav.) from Oaxaca, Mexico Chilean J. Agric. Res.
Vera-Guzmán,Araceli Minerva; Chávez-Servia,José Luis; Carrillo-Rodríguez,José Cruz; G. López,Mercedes.
Reports of the last decade show that some types of food and spices included in the human diet, such as pepper (Capsicum annuum L.) can have a positive effect on human health. The Mexican pepper germplasm is poorly documented with regard to variety and the amount of phytochemical compounds that it contains. In the present study, the variation of phytochemical compounds was evaluated in nine fruit variants (morphotypes) of wild and cultivated pepper grown in Oaxaca. ANOVA detected significant differences among pepper morphotypes and ripeness stages of fruits; vitamin C, total phenols, flavonoids, P-carotene, coordinated chromatic of color, and capsaicinoids. The highest values of vitamin C were found in 'Tabaquero', 'Guero' and 'Costeño' morphotypes (151.6...
Tipo: Journal article Palavras-chave: Capsaicionids; Carotenoids; Phenols; Flavonoids; Vitamin C.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400013
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Quality, bioactive compounds, and antioxidant activity of serrano chili peppers cultivated in volcanic rock-vermicompost and nutrient solutions Ciencia e Investigación Agraria
Cruz-Crespo,Elia; Sumaya-Martínez,María T; Can-Chulim,Álvaro; Pineda-Pineda,Joel; Bugarín-Montoya,Rubén; Aguilar-Benítez,Gisela.
E. Cruz-Crespo, M.T. Sumaya-Martínez, Á. Can-Chulim, J. Pineda-Pineda, R. Bugarín-Montoya and G. Aguilar-Benítez. 2015. Quality, bioactive compounds, and antioxidant activity of serrano chili peppers cultivated in volcanic rock-vermicompost and nutrient solutions. Cien. Inv. Agr. 42(3): 375-384. The concentration of antioxidant compounds, the antioxidant activity, physical quality characteristics, and the yield of serrano chilies (Capsicum annuum L.) are affected by agricultural practices, such as the use of vermicompost in containers combined with chemical fertilizers, the investigations of which have focused on yield. A study was performed to determine whether vermicompost mixed with volcanic rock and the ionic composition of the nutrient solution affect...
Tipo: Journal article Palavras-chave: Ascorbic acid; Capsicum annuum; Phenols; Yields.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300006
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