Free amino nitrogen concentration correlates to total yeast assimilable nitrogen concentration in apple juice

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dc.contributor.authorBoudreau, Thomas F. IVen
dc.contributor.authorPeck, Gregory M.en
dc.contributor.authorO'Keefe, Sean F.en
dc.contributor.authorStewart, Amanda C.en
dc.contributor.departmentFood Science and Technologyen
dc.date.accessioned2017-12-06T19:12:57Zen
dc.date.available2017-12-06T19:12:57Zen
dc.date.issued2017-09-12en
dc.description.abstractYeast assimilable nitrogen (YAN) is essential for yeast growth and metabolism during apple (Malus x domestica Borkh.) cider fermentation. YAN concentration and composition can impact cider fermentation kinetics and the formation of volatile aroma compounds by yeast. The YAN concentration and composition of apples grown in Virginia, USA over the course of two seasons was determined through analysis of both free amino nitrogen (FAN) and ammonium ion concentration. FAN was the largest fraction of YAN, with a mean value of 51 mg N L⁻¹ FAN compared to 9 mg N L⁻¹ ammonium. Observed YAN values ranged from nine to 249 mg N L⁻¹, with a mean value of 59 mg N L⁻¹. Ninety-four percent of all samples analyzed in this study contained <140 mg N L⁻¹ YAN, a concentration generally considered the minimum level needed in grape-based wines for yeast to fully utilize all of the fermentable sugars. FAN concentration was correlated with total YAN concentration, but ammonium concentration was not. Likewise, there was no correlation between FAN and ammonium concentration.en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1002/fsn3.536en
dc.identifier.urihttp://hdl.handle.net/10919/81064en
dc.identifier.volume2017en
dc.language.isoenen
dc.publisherWileyen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectApplesen
dc.subjectcideren
dc.subjectfermentationen
dc.subjectfood processing chemistryen
dc.subjectpome fruitsen
dc.titleFree amino nitrogen concentration correlates to total yeast assimilable nitrogen concentration in apple juiceen
dc.title.serialFood Science & Nutritionen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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