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Hops
,→Hop Derived Compounds In Beer and Biotransformations
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See also [https://www.researchgate.net/profile/Kiyoshi_Takoi/publication/261475199/figure/fig3/AS:614043605823489@1523410812322/Comparison-of-monoterpene-alcohols-g-L-during-fermentation-by-using-Mosaic-hop-under.png this table] which shows the higher geraniol levels from post-fermentation dry hopping versus lower geraniol levels from pre-yeast and 3-day fermentation dry hopping.
Other yeast species can also convert monoterpenes. For example, a strain of ''Kluyveromyces lactis'' was found to reduce geraniol to citronellol. This strain and a strain of ''Torulaspora delbrueckii'' produced linalool from both geraniol and nerol, and could also form geraniol from nerol <ref>[https://www.ncbi.nlm.nih.gov/pubmed/10790686 Biotransformation of monoterpene alcohols by Saccharomyces cerevisiae, Torulaspora delbrueckii and Kluyveromyces lactis. King A1, Richard Dickinson J. 2000.]</ref>. Many species of ''Debaryomyces'', ''Kluyveromyces'', and ''Pichia'' were found to transform geraniol into linalool, and nerol into linalool and alpha-terpineol <ref>[https://www.ncbi.nlm.nih.gov/pubmed/18357555 Biotransformation of acyclic monoterpenoids by Debaryomyces sp., Kluyveromyces sp., and Pichia sp. strains of environmental origin. Ponzoni C, Gasparetti C, Goretti M, Turchetti B, Pagnoni UM, Cramarossa MR, Forti L, Buzzini P. 2008.]</ref>.