Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi
Sorbitol and xylitol are polyols often used in foods as naturally occurring sugar substitutes. They provide sweet taste and reduced calories in products of intermediate moisture. This type of food is susceptible to spoilage by xerophilic molds which affect shelf life of foods and produce significant...
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2011
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paper:paper_07400020_v28_n8_p1463_Patriarca2023-06-08T15:44:27Z Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi Patriarca, Andrea Rosana Buera, María del Pilar Vaamonde, Graciela Germination Growth Sorbitol Xerophilic fungi Xylitol sorbitol xylitol article chemistry culture medium fungus fungus spore growth, development and aging kinetics metabolism temperature Culture Media Fungi Kinetics Sorbitol Spores, Fungal Temperature Xylitol Eurotium Eurotium chevalieri Eurotium repens Fungi Penicillium chrysogenum Wallemia sebi Sorbitol and xylitol are polyols often used in foods as naturally occurring sugar substitutes. They provide sweet taste and reduced calories in products of intermediate moisture. This type of food is susceptible to spoilage by xerophilic molds which affect shelf life of foods and produce significant losses. The aim of the present work was to study the effect of glycerol, sorbitol and xylitol on the germination and growth of four xerophilic fungi at different temperatures and water activity levels. Penicillium chrysogenum, Wallemia sebi, Eurotium chevalieri and Eurotium repens were cultivated on malt extract agar with the addition of the respective polyols and a w adjusted to 0.85, 0.88, 0.90 and 0.93. Incubation was made at 25, 30 and 35 °C. Results of the present study demonstrated that sorbitol and xylitol affect the growth kinetics of the four fungal species. The observed tendency was that these solutes shortened the germination times and increased the growth rates. The effect of each solute depended on the fungal species and the a w/temperature combinations. At lower a w the influence was more evident on the germination times while the effect on growth rates was more pronounced at higher a w levels. © 2011 Elsevier Ltd. Fil:Patriarca, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Buera, M.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vaamonde, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07400020_v28_n8_p1463_Patriarca http://hdl.handle.net/20.500.12110/paper_07400020_v28_n8_p1463_Patriarca |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Germination Growth Sorbitol Xerophilic fungi Xylitol sorbitol xylitol article chemistry culture medium fungus fungus spore growth, development and aging kinetics metabolism temperature Culture Media Fungi Kinetics Sorbitol Spores, Fungal Temperature Xylitol Eurotium Eurotium chevalieri Eurotium repens Fungi Penicillium chrysogenum Wallemia sebi |
| spellingShingle |
Germination Growth Sorbitol Xerophilic fungi Xylitol sorbitol xylitol article chemistry culture medium fungus fungus spore growth, development and aging kinetics metabolism temperature Culture Media Fungi Kinetics Sorbitol Spores, Fungal Temperature Xylitol Eurotium Eurotium chevalieri Eurotium repens Fungi Penicillium chrysogenum Wallemia sebi Patriarca, Andrea Rosana Buera, María del Pilar Vaamonde, Graciela Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| topic_facet |
Germination Growth Sorbitol Xerophilic fungi Xylitol sorbitol xylitol article chemistry culture medium fungus fungus spore growth, development and aging kinetics metabolism temperature Culture Media Fungi Kinetics Sorbitol Spores, Fungal Temperature Xylitol Eurotium Eurotium chevalieri Eurotium repens Fungi Penicillium chrysogenum Wallemia sebi |
| description |
Sorbitol and xylitol are polyols often used in foods as naturally occurring sugar substitutes. They provide sweet taste and reduced calories in products of intermediate moisture. This type of food is susceptible to spoilage by xerophilic molds which affect shelf life of foods and produce significant losses. The aim of the present work was to study the effect of glycerol, sorbitol and xylitol on the germination and growth of four xerophilic fungi at different temperatures and water activity levels. Penicillium chrysogenum, Wallemia sebi, Eurotium chevalieri and Eurotium repens were cultivated on malt extract agar with the addition of the respective polyols and a w adjusted to 0.85, 0.88, 0.90 and 0.93. Incubation was made at 25, 30 and 35 °C. Results of the present study demonstrated that sorbitol and xylitol affect the growth kinetics of the four fungal species. The observed tendency was that these solutes shortened the germination times and increased the growth rates. The effect of each solute depended on the fungal species and the a w/temperature combinations. At lower a w the influence was more evident on the germination times while the effect on growth rates was more pronounced at higher a w levels. © 2011 Elsevier Ltd. |
| author |
Patriarca, Andrea Rosana Buera, María del Pilar Vaamonde, Graciela |
| author_facet |
Patriarca, Andrea Rosana Buera, María del Pilar Vaamonde, Graciela |
| author_sort |
Patriarca, Andrea Rosana |
| title |
Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| title_short |
Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| title_full |
Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| title_fullStr |
Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| title_full_unstemmed |
Stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| title_sort |
stimulating effect of sorbitol and xylitol on germination and growth of some xerophilic fungi |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07400020_v28_n8_p1463_Patriarca http://hdl.handle.net/20.500.12110/paper_07400020_v28_n8_p1463_Patriarca |
| work_keys_str_mv |
AT patriarcaandrearosana stimulatingeffectofsorbitolandxylitolongerminationandgrowthofsomexerophilicfungi AT bueramariadelpilar stimulatingeffectofsorbitolandxylitolongerminationandgrowthofsomexerophilicfungi AT vaamondegraciela stimulatingeffectofsorbitolandxylitolongerminationandgrowthofsomexerophilicfungi |
| _version_ |
1768543708495478784 |