Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis

Background Edible microalgae are marine or fresh water mesophilic species. Although the harvesting of microalgae offers an abundance of opportunities to the food and pharmaceutical industries, the possibility to use extremophilic microalgae as a food source for animals is not well-documented. Object...

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Autores: Navarro, Francisco, Forjan Lozano, Eduardo, Vazquez, María, Montero, Zaida, Bermejo, Elisabeth, Pásaro Dionisio, María Rosario, Vega Piqueres, José María
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/56254
Acceso en línea:http://hdl.handle.net/11441/56254
https://doi.org/10.3402/fnr.v60.30472
Access Level:acceso abierto
Palabra clave:Coccomyxa onubensis
safe food
hypolipidemic induction
nutraceuticals
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spelling Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensisNavarro, FranciscoForjan Lozano, EduardoVazquez, MaríaMontero, ZaidaBermejo, ElisabethPásaro Dionisio, María RosarioVega Piqueres, José MaríaCoccomyxa onubensissafe foodhypolipidemic inductionnutraceuticalsBackground Edible microalgae are marine or fresh water mesophilic species. Although the harvesting of microalgae offers an abundance of opportunities to the food and pharmaceutical industries, the possibility to use extremophilic microalgae as a food source for animals is not well-documented. Objective We studied the effects of dietary supplementation of a powdered form of the acidophilic microalga Coccomyxa onubensis on growth and health parameters of laboratory rats. Method Four randomly organized groups of rats (n=6) were fed a standard diet (Diet 1, control) or with a diet in which 0.4% (Diet 2), 1.25% (Diet 3), or 6.25% (Diet 4) (w/w) of the standard diet weight was substituted with dried microalgae powder, respectively. The four groups of animals were provided ad libitum access to feed for 45 days. Results C. onubensis biomass is rich in protein (44.60% of dry weight) and dietary fiber (15.73%), and has a moderate carbohydrate content (24.8%) and a low lipid content (5.4%) in which polyunsaturated fatty acids represent 65% of the total fatty acid. Nucleic acids are present at 4.8%. No significant difference was found in growth rates or feed efficiency ratios of the four groups of rats. Histological studies of liver and kidney tissue revealed healthy organs in control and C. onubensis-fed animals, while plasma hematological and biochemical parameters were within healthy ranges for all animals. Furthermore, animals fed a microalgae-enriched diet exhibited a statistically significant decrease in both blood cholesterol and triglyceride levels. The blood triglyceride content and very low density lipoprotein-cholesterol levels decreased by about 50% in rats fed Diet 4. Conclusions These data suggest that C. onubensis may be useful as a food supplement for laboratory animals and may also serve as a nutraceutical in functional foods. In addition, microalgae powder-supplemented diets exerted a significant hypocholesterolemic and hypotriglyceridemic effect in animals.Taylor & Francis OpenFisiología2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/56254https://doi.org/10.3402/fnr.v60.30472reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésFood and Nutrition Research, 60http://dx.doi.org/10.3402/fnr.v60.30472info:eu-repo/semantics/openAccessoai:idus.us.es:11441/562542026-06-17T12:51:07Z
dc.title.none.fl_str_mv Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
title Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
spellingShingle Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
Navarro, Francisco
Coccomyxa onubensis
safe food
hypolipidemic induction
nutraceuticals
title_short Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
title_full Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
title_fullStr Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
title_full_unstemmed Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
title_sort Microalgae as a safe food source for animals: nutritional characteristics of the acidophilic microalga Coccomyxa onubensis
dc.creator.none.fl_str_mv Navarro, Francisco
Forjan Lozano, Eduardo
Vazquez, María
Montero, Zaida
Bermejo, Elisabeth
Pásaro Dionisio, María Rosario
Vega Piqueres, José María
author Navarro, Francisco
author_facet Navarro, Francisco
Forjan Lozano, Eduardo
Vazquez, María
Montero, Zaida
Bermejo, Elisabeth
Pásaro Dionisio, María Rosario
Vega Piqueres, José María
author_role author
author2 Forjan Lozano, Eduardo
Vazquez, María
Montero, Zaida
Bermejo, Elisabeth
Pásaro Dionisio, María Rosario
Vega Piqueres, José María
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Fisiología
dc.subject.none.fl_str_mv Coccomyxa onubensis
safe food
hypolipidemic induction
nutraceuticals
topic Coccomyxa onubensis
safe food
hypolipidemic induction
nutraceuticals
description Background Edible microalgae are marine or fresh water mesophilic species. Although the harvesting of microalgae offers an abundance of opportunities to the food and pharmaceutical industries, the possibility to use extremophilic microalgae as a food source for animals is not well-documented. Objective We studied the effects of dietary supplementation of a powdered form of the acidophilic microalga Coccomyxa onubensis on growth and health parameters of laboratory rats. Method Four randomly organized groups of rats (n=6) were fed a standard diet (Diet 1, control) or with a diet in which 0.4% (Diet 2), 1.25% (Diet 3), or 6.25% (Diet 4) (w/w) of the standard diet weight was substituted with dried microalgae powder, respectively. The four groups of animals were provided ad libitum access to feed for 45 days. Results C. onubensis biomass is rich in protein (44.60% of dry weight) and dietary fiber (15.73%), and has a moderate carbohydrate content (24.8%) and a low lipid content (5.4%) in which polyunsaturated fatty acids represent 65% of the total fatty acid. Nucleic acids are present at 4.8%. No significant difference was found in growth rates or feed efficiency ratios of the four groups of rats. Histological studies of liver and kidney tissue revealed healthy organs in control and C. onubensis-fed animals, while plasma hematological and biochemical parameters were within healthy ranges for all animals. Furthermore, animals fed a microalgae-enriched diet exhibited a statistically significant decrease in both blood cholesterol and triglyceride levels. The blood triglyceride content and very low density lipoprotein-cholesterol levels decreased by about 50% in rats fed Diet 4. Conclusions These data suggest that C. onubensis may be useful as a food supplement for laboratory animals and may also serve as a nutraceutical in functional foods. In addition, microalgae powder-supplemented diets exerted a significant hypocholesterolemic and hypotriglyceridemic effect in animals.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11441/56254
https://doi.org/10.3402/fnr.v60.30472
url http://hdl.handle.net/11441/56254
https://doi.org/10.3402/fnr.v60.30472
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Food and Nutrition Research, 60
http://dx.doi.org/10.3402/fnr.v60.30472
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis Open
publisher.none.fl_str_mv Taylor & Francis Open
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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