Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile

The genus Cyttaria belongs to the family Cyttariaceae (Ascomycota Division) and its species are obligate parasites of trees of the genus Nothofagus. It is naturally distributed in the southern hemisphere in places where there is a presence of these tree species, with seven species of Cyttaria presen...

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Autor: Salazar-Vidal, Viviana Edith
Tipo de recurso: tesis de maestría
Estado:Versión publicada
Fecha de publicación:2019
País:Chile
OAI Identifier:oai:repositorio.anid.cl:10533/242114
Acceso en línea:https://hdl.handle.net/10533/242114
Access Level:acceso abierto
Palabra clave:Ciencias Naturales
Otras Ciencias Naturales
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dc.title.es_CL.fl_str_mv Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
Comparación de parámetros químico-nutricionales de las especies del género Cyttaria más consumidas en Chile
title Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
spellingShingle Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
Salazar-Vidal, Viviana Edith
Ciencias Naturales
Otras Ciencias Naturales
title_short Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
title_full Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
title_fullStr Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
title_full_unstemmed Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
title_sort Comparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in Chile
dc.creator.none.fl_str_mv Salazar-Vidal, Viviana Edith
author Salazar-Vidal, Viviana Edith
author_facet Salazar-Vidal, Viviana Edith
author_role author
dc.contributor.advisor.none.fl_str_mv Becerra-Allende, José Violido
Pérez-Manríquez, Claudia Isabel
dc.contributor.institution.es_CL.fl_str_mv UNIVERSIDAD DE CONCEPCION
dc.subject.oecd1n.es_CL.fl_str_mv Ciencias Naturales
topic Ciencias Naturales
Otras Ciencias Naturales
dc.subject.oecd2n.es_CL.fl_str_mv Otras Ciencias Naturales
description The genus Cyttaria belongs to the family Cyttariaceae (Ascomycota Division) and its species are obligate parasites of trees of the genus Nothofagus. It is naturally distributed in the southern hemisphere in places where there is a presence of these tree species, with seven species of Cyttaria present in our country: C. berteroi, C. darwinii, C. espinosae, C. hariotii, C. hookeri, C. johowii and C. exigua, which are commonly known as “Digüeñes” and which are of great importance from the nutritional point of view, since they have been consumed from prehistory by native people. In Chile, studies have been carried out on taxonomy, ecology and chemical-nutritional analysis of some species of the Cyttaria genus, collected mainly in the Metropolitan Region and Maule Region. For this reason, this research include species from other geographical areas of Chile and it is intended to determine which Cyttaria species studied has a better nutritional composition and a high medicinal potential for the prevention and treatment of degenerative diseases, which can provide relevant information. As a general objective we proceeded to determine the nutritional composition, antioxidant capacity and antitumor activity of Cyttaria species, more consumed in Chile, collected during 2018. This study describes the analysis of nutritional composition of Cyttaria spp. termined by means of official AOAC described method. The content of total polyphenols and total antioxidant capacity of different extracts from C. hariotii y C. espinosae was evaluated using the ABTS. Likewise, total phenol were determined by means of Folin-Ciocalteu assay, and results were expressed as gallic acid equivalents. Among the results obtained, the species C. espinosae had a high protein content with an average of 20 g/100 g in dry weight. The extract of C. hariotii had an average amount of 1.1 mg/g equivalent of gallic acid, which is associated with a higher content of phenolic compounds and an average antioxidant capacity of 10.8 mg of Trolox equivalents/100g of extract. Likewise, the polysaccharides extract of one of the C. hariotii extracts showed a cytotoxic effect on the cells of the human leukemia tumor line where an IC50 value of 2.1 mg/mL was obtained which decreased the % cell viability. Keywords: Cyttariales, digüeñes, edible fungi, antioxidants, cytotoxicity.
publishDate 2019
dc.date.issued.es_CL.fl_str_mv 2019
dc.date.accessioned.none.fl_str_mv 2020-07-28T22:06:40Z
2022-08-16T20:04:20Z
dc.date.available.none.fl_str_mv 2020-07-28T22:06:40Z
2022-08-16T20:04:20Z
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spelling UNIVERSIDAD DE CONCEPCIONSalazar-Vidal, Viviana Edith2019https://hdl.handle.net/10533/242114http://purl.org/coar/access_right/c_abf2Otras Ciencias NaturalesCiencias NaturalesComparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in ChileBecerra-Allende, José ViolidoPérez-Manríquez, Claudia IsabelUNIVERSIDAD DE CONCEPCIONChileSalazar-Vidal, Viviana Edith2020-07-28T22:06:40Z2022-08-16T20:04:20Z2020-07-28T22:06:40Z2022-08-16T20:04:20Z2019The genus Cyttaria belongs to the family Cyttariaceae (Ascomycota Division) and its species are obligate parasites of trees of the genus Nothofagus. It is naturally distributed in the southern hemisphere in places where there is a presence of these tree species, with seven species of Cyttaria present in our country: C. berteroi, C. darwinii, C. espinosae, C. hariotii, C. hookeri, C. johowii and C. exigua, which are commonly known as “Digüeñes” and which are of great importance from the nutritional point of view, since they have been consumed from prehistory by native people. In Chile, studies have been carried out on taxonomy, ecology and chemical-nutritional analysis of some species of the Cyttaria genus, collected mainly in the Metropolitan Region and Maule Region. For this reason, this research include species from other geographical areas of Chile and it is intended to determine which Cyttaria species studied has a better nutritional composition and a high medicinal potential for the prevention and treatment of degenerative diseases, which can provide relevant information. As a general objective we proceeded to determine the nutritional composition, antioxidant capacity and antitumor activity of Cyttaria species, more consumed in Chile, collected during 2018. This study describes the analysis of nutritional composition of Cyttaria spp. termined by means of official AOAC described method. The content of total polyphenols and total antioxidant capacity of different extracts from C. hariotii y C. espinosae was evaluated using the ABTS. Likewise, total phenol were determined by means of Folin-Ciocalteu assay, and results were expressed as gallic acid equivalents. Among the results obtained, the species C. espinosae had a high protein content with an average of 20 g/100 g in dry weight. The extract of C. hariotii had an average amount of 1.1 mg/g equivalent of gallic acid, which is associated with a higher content of phenolic compounds and an average antioxidant capacity of 10.8 mg of Trolox equivalents/100g of extract. Likewise, the polysaccharides extract of one of the C. hariotii extracts showed a cytotoxic effect on the cells of the human leukemia tumor line where an IC50 value of 2.1 mg/mL was obtained which decreased the % cell viability. Keywords: Cyttariales, digüeñes, edible fungi, antioxidants, cytotoxicity.El género Cyttaria pertenece a la familia Cyttariaceae (División Ascomycota) y sus especies son parásitos obligados de árboles del género Nothofagus. Se distribuye naturalmente en el hemisferio sur en lugares donde existe presencia de estas especies arbóreas, encontrándose siete especies de Cyttaria presentes en nuestro país: C. berteroi, C. darwinii, C. espinosae, C. hariotii, C. hookeri, C. johowii y C. exigua, que comúnmente se conocen como “Digüeñes” y que tienen gran importancia desde el punto de vista alimenticio, ya que han sido consumidos desde la prehistoria por pueblos originarios. En Chile se han realizado estudios sobre taxonomía, ecología y análisis químico-nutricional de algunas especies del género Cyttaria, recolectadas principalmente en la Región Metropolitana y Región del Maule. Por este motivo, en esta investigación se incluyen especies de otras zonas geográficas de Chile y se propone determinar cuál de estas especies estudiadas presenta una mejor composición nutricional y un alto potencial medicinal para combatir enfermedades asociadas a estrés oxidativo y cáncer, lo que puede aportar información relevante. El objetivo de esta investigación fue determinar la composición nutricional, capacidad antioxidante y actividad citotóxica de las especies del género Cyttaria más consumidas en Chile recolectadas durante el año 2018. El presente estudio describe el análisis de la composición nutricional de Cyttaria spp., para lo que se utilizó el procedimiento oficial descrito por la AOAC. El contenido fenólico total y la capacidad antioxidante de diferentes extractos de las especies C. hariotii y C. espinosae, se evaluó mediante un ensayo ABTS•+. Por otro lado, los fenoles totales fueron determinados por el ensayo Folin-Ciocalteu y se expresaron como equivalentes de ácido gálico. Dentro de los resultados obtenidos, la especie C. espinosae presentó un alto contenido de proteínas con un promedio de 20 g/100 g en peso seco. El extracto de C. hariotii presentó una cantidad promedio de 1,1 mg/g equivalentes de ácido gálico, asociado a un alto contenido de compuestos fenólicos y una capacidad antioxidante promedio de 10,8 mg de equivalentes Trolox/100g de extracto. Asimismo, el extracto de polisacáridos de uno de los extractos de C. hariotii mostró un efecto citotóxico sobre las células de la línea tumoral de leucemia humana donde se obtuvo un valor IC50 de 2,1 mg/mL que disminuyó el % de viabilidad celular. Palabras clave: Cyttariales, digüeñes, hongos comestibles, antioxidantes, citotoxicidad.22170747https://hdl.handle.net/10533/242114instname: Conicytreponame: Repositorio Digital RI2.0info:eu-repo/grantAgreement// 22170747info:eu-repo/semantics/dataset/hdl.handle.net/10533/93488info:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivs 3.0 Chilehttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/Ciencias NaturalesOtras Ciencias NaturalesComparison of chemical-nutritional parameters of the most consumed species of the gender Cyttaria in ChileComparación de parámetros químico-nutricionales de las especies del género Cyttaria más consumidas en Chileinfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/publishedVersionTesisTesishttps://hdl.handle.net/10533/242114907a52eb-190b-4ab8-b95f-d74920b3342dvirtual::56516-1907a52eb-190b-4ab8-b95f-d74920b3342dvirtual::56516-1LICENSElicense.txttext/plain1779https://repositorio.anid.cl/bitstreams/3f57a0eb-aa93-4e55-87ed-19e3ead3ec60/download593a6e7305c66c56041a9f9e15a649c1MD51CC-LICENSElicense_rdfapplication/octet-stream1232https://repositorio.anid.cl/bitstreams/13b80fdf-48c3-431f-ab69-5800e0d42e15/downloadf97bcfdf58f3e17b5cec231112dab5b1MD52TEXT22170747 Tesis Magister - V. 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