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| Registros recuperados: 443 | |
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| Mariangel,Emilia; Reyes-Diaz,Marjorie; Lobos,Walter; Bensch,Emma; Schalchli,Heidi; Ibarra,Pamela. |
| The antioxidant capacity (AC), total anthocyanins (TA) and total phenols (TP) of calafate fruit from four locations in southern Chile (El Blanco, Lonquimay, Mañihuales and Temuco) were determined using both the free radical 2.2-diphenyl-1-picrylhydrazyl (DPPH) method and the linoleic acid oxidation inhibition method as well as the pH-differential and Folin-Ciocalteu methods. Phenolic compounds were also identified using HPLC-DAD (High Performance Liquid Chromatography-Diode-Array Detection). The results showed that TP varied significantly according to the location. Mañihuales was noteworthy, with 34.9 mg of GAE g-1 dried fruit. The measured AC level depended on the methodology used, varying significantly between locations according to the DPPH results.... |
| Tipo: Journal article |
Palavras-chave: Antioxidants; Antioxidant capacity; Berberis; Flavonoids; Phenolic acids; Total phenols. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100014 |
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| Saldaña y Hernández,María I; Gómez,Regino; Pat,Juan M; Álvarez,José D; Pérez,Julián; Ortiz,Carlos F. |
| M.I. Saldaña y Hernández, R. Gómez, J.M. Pat, J.D. Álvarez, J. Pérez, and C.F. Ortiz. 2013. The socioeconomic and technical status of cut flower producers in Tabasco, México. Cien. Inv. Agr. 40(1):5-15. Floriculture in Tabasco, Mexico is part of a diversification and increasing agricultural income, which has the potential for outstanding growth. To determine the socioeconomic status as well as the technical advancement of this sector, surveys were conducted of cut flower producers and combined with official statistics. Socioeconomic and technological indicators showed that 38% of the producers had a high standard of living and 69% of farmers had three or more years of experience in flower cultivation. Most farmers owned their land (66%), and their... |
| Tipo: Journal article |
Palavras-chave: Florists; Socioeconomic levels; Technological usage; Tropical flowers. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100001 |
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| Leiva,Javier; Rodríguez,Valeria; Muñoz,Elias. |
| The aim of this research is to evaluate the sensory texture and influence of calcium chloride concentration on the physicochemical and sensory characteristics of tofu. Samples were prepared from reconstituted soy milk (12% total solids). Calcium chloride at two different concentrations (0.3 and 0.5%) was used as a coagulant. pH, fat content, humidity and total solids were measured. Quantitative descriptive analysis was used to evaluate the sensory properties of springiness, hardness, friability, deformability, adhesiveness and cohesiveness. Correlations were significant (P < 0.05) between cohesiveness and hardness and between pH and adhesiveness. Using correspondence analysis, the panelists described tofu to be firm and elastic when using the lowest... |
| Tipo: Journal article |
Palavras-chave: Fluidity; Ideal concept; Soy; Texture. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000300013 |
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| Cáceres,Pablo; Cordero,Cecilia; González,Gloria; Quiroz,Karla; Bobadilla,Juan C; Bravo,Carmen; Caligari,Peter D.S; Carrasco,Basilio; García-Gonzales,Rolando. |
| A lysis buffer-based protocol (Protocol BA), a modified lysis buffer-based protocol (Protocol BA Mod) and a commercial extraction kit (Protocol PS Kit) (Power Soil, Mo bio Laboratories, CA USA) were each evaluated for their ability to produce high-quality DNA with yields sufficient to allow its use in biodiversity studies. Similarly, the effect of liquid nitrogen on the process of cell disruption in all of the protocols that were studied. DNA yields ranged from 12.4 ng g-1 of processed soil to 9620 ng g-1 using the modified lysis buffer and commercial extraction kit, respectively. The quality of the DNA was determined by the ability of the DNA to produce efficient and reproducible polymerase chain reaction (PCR) products, using primers for universal 16S... |
| Tipo: Journal article |
Palavras-chave: Hydrophilic forests; 16S ribosomal RNA; PCR; Rhizosphere; Soil DNA extraction. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300018 |
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| Sepúlveda-Chavera,Germán; Salvatierra-Martínez,Ricardo; Andía-Guardia,Rodrigo. |
| The powdery mildew complex (Leveillula taurica and Erysiphe sp.) is one of the major factors limiting tomato (Solanum lycopersicum) production in the Azapa Valley, Chile. This problem is especially severe in the case of protected crops because the options for the treatment of these crops with chemical fungicides are limited. This study evaluated the effects of 0.5 and 1.0 kg100 L-1 Ospo-V55® and 10% raw cow's milk on tomato leaflets infected by powdery mildew complex. Ospo-V55®, with active ingredients consisting of 10% p/p of algae extract (IB-101) and 0.8% of microorganism concentrate, was evaluated in this study. Ospo-V55® contains flavonoids, alkaloids and phenols, oligo- and polysaccharides, 8.6% protein, 0.5% magnesium and trace amounts of... |
| Tipo: Journal article |
Palavras-chave: Alternative product; Conidial germination; Ospo-V55®; Powdery mildew; Raw cow's milk; Severity; Tomato; Valle de Azapa. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100010 |
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| Abril,Diana; Abril,Alejandro. |
| Ethanol is the liquid combustible that has become the most promising alternative substitute for gasoline because of the experience gained in its production, the possibility of mixing it with gasoline in different proportions, the possibility of using the existing gasoline distribution infrastructure, and the fact that major changes in engines are not required for its use. Lignocelluloses offer great potential as a biomass source for ethanol production, although their use still requires in-depth analysis with an objective and holistic focus that includes present and future technologic implications. The present article reviews current knowledge about the characteristics and sources of vegetable biomass, as well as the development and possibilities for... |
| Tipo: Journal article |
Palavras-chave: Alcoholic fermentation; Energy; Ethanol; Lignocellulosic ethanol; Vegetable biomass. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000200003 |
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| Vera,Marcela; Aguilera,Alfonso; Rebolledo,Ramón. |
| Coccinellids have been used, throughout the world, in biological control programs of agriculture pests. In Chile this family has been studied by various authors, which addresses issues such as biology, predatory activity and distribution in herbaceous species, shrubs and trees, but their situation in blueberries, where there is an abundance of species, is unknown Coccinellid beetles were counted visually on two blueberry orchards, under organic and conventional management. This study was conducted at the Maquehue Experiment Station, in the central valley of "La Araucanía Región" in southern Chile, from September 2007 through May 2008 and was divided into two periods: from September 2007 through February 2008 with visual counts only on the foliage of the... |
| Tipo: Journal article |
Palavras-chave: Blueberries; Coccinellids; Eriopis connexa; Eriopis eschscholtzii; Hyperaspis sphaeridioides. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200012 |
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| Silva,Daniel V; Ferreira,Evander A; Oliveira,Maxwel C; Pereira,Gustavo A. M; Braga,Renan R; dos Santos,José B; Aspiazu,Ignácio; Souza,Matheus F. |
| Intercropping is a common practice among farmers in tropical regions of the world and has persisted for years, not only for traditional reasons, but also for certain advantages that helped in its ecological adaptation. In regard to low income farmers with small areas for cultivation, more attention should be given to the cost of production and better land management. Thus, the aim of this work was to determine the best intercropping system of cassava with other crops. The experiment was conducted in an area belonging to the cassava (Manihot esculenta) producers of the Planalto de Minas district in Diamantina, Minas Gerais State, Brazil. The treatments comprised cassava intercropped with maize, beans and dwarf pigeon pea, as well as controls with and... |
| Tipo: Journal article |
Palavras-chave: Area equivalence index; Harvest index; Manihot esculenta; Policultivation systems. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100015 |
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| Cortés,Manuel E; Vigil,Pilar; Montenegro,Gloria. |
| Honey, a natural substance produced by honeybees, is composed of a complex mixture of carbohydrates, water, and a small amount of proteins, vitamins, minerals, and phenolic compounds. Fructose, glucose and maltose are among the various types of sugars present in honey. Used for millennia as both food and medicine, honey has been associated with improved antioxidant capacity, modulation of the immune system, antimicrobial activities, influence on lipid values (through antihypercholesterolemic effects) and regulation of glycemic responses, among other benefits. The aim of this article was to review the effects of natural honey intake on human health, with particular reference to its influence on glycemic regulation. Several studies have focused on the... |
| Tipo: Journal article |
Palavras-chave: Diabetes; Flavonoids; Glycemic regulation; Honey; Insulin resistance; Nutraceuticals; Nutrition. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200015 |
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| González-Moralejo,Silvia Andrés. |
| In this paper, we analyze the current Spanish tariff system as applied by low-temperature distribution companies on transport in part loads of perishable freight that are destined to Spain's main European export markets. Using 2008 data that have been directly obtained from a sample of transport companies, the price structure is formulated by making a distinction between ordinary and final prices and their respective variables. Next, the price structure is compared to the mean production costs. According to our calculations, we can state that the tariffs of distribution companies depend on the mean total cost, and they are estimated by using final prices calculated expressly for every customer. Finally, this paper outlines directions for future empirical... |
| Tipo: Journal article |
Palavras-chave: Discount; Mean costs; Perishable freight; Prices; Road transport. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200003 |
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| Milan Pandey,Ram. |
| Twenty six accessions of grain Amaranths (Amaranthus hypochondriacus), including both indigenous and exotic introductions, were evaluated in the rabi season (winter crop, November-March). Based on D² analysis, the accessions were grouped into eleven clusters. Clusters I, II, and III had seven, four, and three accessions, respectively; clusters VII, VIII, IX and X had only one accession in each case. The accession in cluster V had the greatest divergence, closely followed by those of clusters IV and I. The maximum and minimum divergences were revealed between clusters VIII and XI and between II and VIL respectively. The pattern of clustering did not show any relationship with geographic origin. In a study of pattern of F2 segregation in 25 crosses involving... |
| Tipo: Journal article |
Palavras-chave: Amaranthus hypochondriacus; D² statistics; Genetic diversity; Grain amaranths. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000100007 |
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| Rivera,Reinaldo; de Los Ríos,Patricio; Contreras,Ángel. |
| The presence of alloctone bacteria isconsidered as one of the more important biological pollutants of water bodies, existing one close relation between the fecal contamination indicators and the existence of urban and industrial zones. In the present study we utilized indicators of fecal contamination (coliforms and streptococci) and the coliform/streptococci index (FC/FE) for determine the origin of fecal pollution in two water bodies of Temuco, Northern Campus at north surrounding of Temuco, and Rucamanque source that is located in a rural zone. It utilized the multiple assays number for obtain the bacteria more probable number in 100 mi of water sample. It was done the correlations between microbiological indicators and physic-chemical variables. The... |
| Tipo: Journal article |
Palavras-chave: Fecal pollution; Fecal indicator; Coliforms; Streptococci. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200014 |
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| Registros recuperados: 443 | |
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