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Beer is the most consumed alcoholic beverage worldwide. Both beer and wine areÂ  recognized since ancient times for their health benefits. Nowadays, these beverages are consumed for its sensory, social interaction, and recently even in culinary dishes. In addition, studies showed the benefits of beer moderate consumption on health. Beer is a low-alcohol beverage and also presents many nutritional properties outlined by its nutritional content rich in vitamins, minerals and antioxidants that come from the raw material (malt and hop). Wishing to attract as many niches of consumers, brewers tend to produce every year new and innovative beers. The purpose of this study was to develop the technology for an innovative special beer. The synchronous alcoholic fermentation of two different origin substrates - wort and grape must - was monitored and their composition was assessed in order to obtain special beer with superior sensory properties. Technological process was developed in the Winery Pilot Station of the UASVM Cluj-Napoca. Special beer was obtained by alcoholic fermentation of hopped dark wort with grape must from the autochthonous Feteasca neagra grapes variety. Second fermentation process was followed by the maturation (3 weeks at 5 o C) in order to harmonize sensory qualities. The entire process was monitored considering fermentation and final products physicochemical parameters. The optimized ratio of the two fermentation substrates was of 2.5:3 on primary raw materials - beer wort and grapes must. The process was monitored on optimizing the fermentation process. The best fermentation yield was obtained when lower fermentation extracts were used. This study demonstrated that the simultaneous fermentation of the two substrates with different glucidic origin may proceed under controlled conditions and may be carried out so as to obtain the desired fermentation products with improved sensorial properties and increased health benefits.

Special Beer obtained by Synchronous Alcoholic Fermentation of Two Different Origin Substrates