Effect of some extractive condition

Effect of some extractive conditions on yield of capsaicinoids
and red colorants was firstly investigated by single-factor experiments,
respectively. These conditions, including the ratio of solvent
to material (2, 3, 4, 5, 6 mL/g), the temperature of water bath (50,
60, 70, 80, 90
C) and time of extraction (60, 90, 120, 150, 180 min),
were same at two different stages: the removal stage of capsaicinoids
or extraction stage of red pigments. But, the concentration
of ethanol aqueous was different at above two stages. For
removal of capsaicinoids, the concentration of ethanol was set as
10%, 20%, 30%, 40%, 50%, 60%, 70% (v/v). Meanwhile, it was set as
60%, 70%, 80%, 90%, 95% (v/v) for the stage of extraction of red
pigments.