Assertion: propionic acid | /r/AtLocation | first few fractions
Facets:
Source sentences:
text: Since the fractions should represent different molecular weight ranges and any propionic acid (molecular weight=74.08) should be contained only in the first few fractions, it is concluded that at least part of the microbial inhibitory activity is due to something other than just the propionic acid present and the unknown substance(s) have a molecular weight greater than 300.