The different parameters were then analyzed statistically and
the results were summarized in Table 2. Under the experimental
conditions, the temperature of water bath was a crucial parameter
(P < 0.01) and the ratio of solvent to material was also an important
parameter (P < 0.05) for the high yield of capsaicinoids. And the
extracting time seemed to be effective (P < 0.1). In the range of
40%e60% (v/v) concentration of ethanol aqueous, the effect on
extraction yield of capsaicinoids was small which is according with
that of single-factor experiments.