Q: Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
The goals of this study were to determine if -acid from hops (Humulus lupulus L.) could be used to control fructan fermentation by equine hindgut micro-organisms, and to verify the antimicrobial mode of action on Streptococcus bovis, which has been implicated in fructan fermentation, hindgut acidosis and pasture-associated laminitis (PAL) in the horse.', 'Suspensions of uncultivated equine faecal micro-organisms produced fermentation acids when inulin (model fructan) was the substrate, but -acid (i.e. lupulone) concentrations 9ppm inhibited lactate production and mitigated the decrease in pH. Inulin-fermenting Strep.bovis was isolated from the -acid-free suspensions after enrichment with inulin. The isolates were sensitive to -acid, which decreased the viable number of streptococci in faecal suspensions, as well as growth, lactate production and the intracellular potassium of Strep.bovis in pure culture.
A:
Does inhibition of fructan-fermenting equine faecal bacteria and Streptococcus bovis by hop ( Humulus lupulus L. ) -acid?