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has been cited by the following article:

• TITLE: Enhancing the Yields of Phenolic Compounds during Fermentation Using Saccharomyces cerevisiae Strain 96581

  AUTHORS: Adam A. Banach, Beng Guat Ooi

  KEYWORDS: Phenolic Antioxidants, Tyrosol, Tryptophol, Phenylethanol, Fermentation Technology

  JOURNAL NAME: Food and Nutrition Sciences, Vol.5 No.21, November 5, 2014

  ABSTRACT: Phenylethanol, tyrosol, and tryptophol are phenolic compounds or fusel alcohols formed via the Ehrlich pathway by yeast metabolism. These compounds can yield health benefits as well as contribute to the flavors and aromas of fermented food and beverages. This research shows that Saccharomyces cerevisiae Strain 96581 is capable of producing significantly higher levels of these three compounds when the precursor amino acids were supplemented into either the Chardonnay concentrate for wine-making or the malt concentrate for brewing English Ale. Strain 96581 can produce phenylethanol, tyrosol, and tryptophol as high as 434 mg/kg, 365 mg/kg, and 129 mg/kg, respectively, in the beer fermentation. The performance of Ale yeast WLP002 from White Labs Inc. was also analyzed for comparison. Strain 96581 outperformed WLP002 in the control beer, the amino acids supplemented beer, and the kiwi-beer background. This shows that Strain 96581 is more effective than WLP002 in converting the malt and the kiwi fruit supplements via its endogenous enzymes.