Assertion: azadirachtin's purity | /r/CapableOf | remain low
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Source sentences:
text: Disadvantages often associated with the prior art are: a) extraction using whole neem seeds bring in a lot of impurities, thereby the purity of azadiractin remains low, b) cross-contamination of polar and non-polar solvent streams, c) water accumulation in the polar solvent streams d) low azadiractin concentrations or yields in the extracted product e) addition of inert carriers either brings acidity/alkalinity problem or cake type of mass formation during storage, and f) hygroscopic nature of the spray dried aqueous extract of neem seed kernel.