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dc.contributor.author
Conde Molina, Debora Rocío
dc.contributor.author
Novelli Poisson, Guido Fernando
dc.contributor.author
Kronberg, Maria Florencia
dc.contributor.author
Galvagno, Miguel Angel
dc.date.available
2022-01-06T14:18:36Z
dc.date.issued
2021-09
dc.identifier.citation
Conde Molina, Debora Rocío; Novelli Poisson, Guido Fernando; Kronberg, Maria Florencia; Galvagno, Miguel Angel; Valorization of an Andean crop (yacon) through the production of a yeast cell-bound phytase; Elsevier Ltd; Biocatalysis and Agricultural Biotechnology; 36; 9-2021; 1-8
dc.identifier.issn
1878-8181
dc.identifier.uri
http://hdl.handle.net/11336/149706
dc.description.abstract
The suitability of the yeast Schwanniomyces (f. Debaryomyces) occidentalis to produce phytase activity on a Smallanthus sonchifolius (yacon) extract-based medium (YSM) was studied. Optimal conditions for phytase production were evaluated in YSM at 28 °C and pH 5.5, with an inoculum of 107 cells/mL, in shaken flasks, using a Box-Benkhen optimization design, and analyzed by response surface methodology. Phytase location was determined by subcellular fractioning and protoplast formation. Maximum phytase titres were obtained with 0.11% w/v yacon reducing sugar, 0.65% w/v (NH4)2SO4 and 16 h of fermentation. The maximum phytase activity attained under these conditions was over 6-fold higher than in non-optimized medium. Scaling-up in a STR-type bioreactor further increased phytase productivity by 1.5-fold. Phytase produced was associated to the cell wall fraction, and presented optimal temperature and pH range values of 75–80 °C and 4.0–5.0, respectively, retaining 80% of its activity at 80 °C for 40 min. Progressively increasing phosphorus concentration in the medium inhibited enzyme production, up to 60% with 0.1% w/v KH2PO4. Yeast biomass, phytase production and production kinetics in YSM were similar to those produced in a cane molasses-based medium. Yacon resulted in a promising alternative feed stock to produce a yeast-bound phytase potentially applicable in the feed industry as a nutritional additive.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
FEED INDUSTRY
dc.subject
NUTRITIONAL ADDITIVE
dc.subject
PHYTASE
dc.subject
SCHWANNIOMYCES OCCIDENTALIS
dc.subject
SMALLANTHUS SONCHIFOLIUS (YACON)
dc.subject
YEAST
dc.subject.classification
Biología Celular, Microbiología
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Valorization of an Andean crop (yacon) through the production of a yeast cell-bound phytase
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-12-03T20:36:47Z
dc.journal.volume
36
dc.journal.pagination
1-8
dc.journal.pais
Países Bajos
dc.description.fil
Fil: Conde Molina, Debora Rocío. Universidad Tecnológica Nacional; Argentina
dc.description.fil
Fil: Novelli Poisson, Guido Fernando. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Biotecnológicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química; Argentina
dc.description.fil
Fil: Kronberg, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
dc.description.fil
Fil: Galvagno, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Biotecnológicas; Argentina
dc.journal.title
Biocatalysis and Agricultural Biotechnology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1878818121002127
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.bcab.2021.102116
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