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Int J Food Microbiol

Title:		Influence of indigenous Hanseniaspora uvarum and Saccharomyces cerevisiae from sugar-rich substrates on the aromatic composition of loquat beer
Author(s):		Pirrone A; Prestianni R; Naselli V; Todaro A; Farina V; Tinebra I; Raffaele G; Badalamenti N; Maggio A; Gaglio R; Settanni L; Bruno M; Moschetti G; Alfonzo A; Francesca N;
Address:		"Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze Bldg. 5, Ent. C., 90128 Palermo, Italy. Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all'Adige, TN, Italy. Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy. Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze Bldg. 5, Ent. C., 90128 Palermo, Italy. Electronic address: antonio.alfonzo@unipa.it"
Journal Title:		Int J Food Microbiol
Year:		2022
Volume:		20220802
Issue:
Page Number:		109868 -
DOI:		10.1016/j.ijfoodmicro.2022.109868
ISSN/ISBN:		1879-3460 (Electronic) 0168-1605 (Linking)
Abstract:		"The demand for unique and exclusive food products and beverages is constantly on the increase. One of the products that mostly evolved to encounter market dynamics in the last decade is craft beer. For a long time, craft breweries have included fruit in beer production to enrich flavour and aroma profile of different beer styles. In this study, for the first time, the use of Saccharomyces and non-Saccharomyces yeast strains isolated from high-sugar matrices (manna and fermented honey by-products) were investigated to diversify fruit craft beer production, in order to improve the fermentation process and highlight the complexity of aroma profiles generated during alcoholic fermentation. Two yeast strains, Hanseniaspora uvarum YGA34 and Saccharomyces cerevisiae MN113, were tested as co-starters and starters for their beer production capacity. Commercial yeast strain US-05 was used as control. Loquat juice was added at the end of primary alcoholic fermentation in all trials. Interestingly, S. cerevisiae MN113 consumed sugars faster than control strain S. cerevisiae US-05, including maltose, even in the case of sequential inoculation. This strain showed an excellent ability to consume rapidly sugars present. All strains showed their concentrations ranged between 5 and 8 Log cycles during fermentation. The absence of off-odours and the improvement of aromatic perception were observed in experimental trials involving the use of S. cerevisiae MN113 as a monoculture and in sequential combination with H. uvarum YGA34. Esters and alcohols were the most abundant compounds emitted from the beers. The beers produced with sequential inoculation of H. uvarum YGA34 and S. cerevisiae MN113 or US-05 are characterised by a higher ester and lower alcohol concentration. These two unconventional yeast strains from high sugar matrices showed great technological properties, representing promising co-starters and starter during craft fruit beer production"
Keywords:		Beer *Eriobotrya Ethanol/analysis Fermentation *Hanseniaspora Saccharomyces cerevisiae Sugars *Wine/analysis Alcoholic fermentation Beer aroma Hanseniaspora uvarum Loquat beer Volatile organic compounds;
Notes:		"MedlinePirrone, Antonino Prestianni, Rosario Naselli, Vincenzo Todaro, Aldo Farina, Vittorio Tinebra, Ilenia Raffaele, Guzzon Badalamenti, Natale Maggio, Antonella Gaglio, Raimondo Settanni, Luca Bruno, Maurizio Moschetti, Giancarlo Alfonzo, Antonio Francesca, Nicola eng Netherlands 2022/08/13 Int J Food Microbiol. 2022 Oct 16; 379:109868. doi: 10.1016/j.ijfoodmicro.2022.109868. Epub 2022 Aug 2"