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. 2021 Aug 26;10(9):2005. doi: 10.3390/foods10092005

Table 5.

Color response images of the SPS and SPS/SPP films containing CA at pH 1 to 12.

pH Value Images after the Color Change
SPS
CA 1%		 SPS
CA 1.5%		 SPS
CA 2%		 SPS/SPP
CA 1%		 SPS/SPP
CA 1.5%		 SPS/SPP
CA 2%
pH 1 graphic file with name foods-10-02005-i001.jpg graphic file with name foods-10-02005-i002.jpg graphic file with name foods-10-02005-i003.jpg graphic file with name foods-10-02005-i004.jpg graphic file with name foods-10-02005-i005.jpg graphic file with name foods-10-02005-i006.jpg
pH 2 graphic file with name foods-10-02005-i007.jpg graphic file with name foods-10-02005-i008.jpg graphic file with name foods-10-02005-i009.jpg graphic file with name foods-10-02005-i010.jpg graphic file with name foods-10-02005-i011.jpg graphic file with name foods-10-02005-i012.jpg
pH 3 graphic file with name foods-10-02005-i013.jpg graphic file with name foods-10-02005-i014.jpg graphic file with name foods-10-02005-i015.jpg graphic file with name foods-10-02005-i016.jpg graphic file with name foods-10-02005-i017.jpg graphic file with name foods-10-02005-i018.jpg
pH 4 graphic file with name foods-10-02005-i019.jpg graphic file with name foods-10-02005-i020.jpg graphic file with name foods-10-02005-i021.jpg graphic file with name foods-10-02005-i022.jpg graphic file with name foods-10-02005-i023.jpg graphic file with name foods-10-02005-i024.jpg
pH 5 graphic file with name foods-10-02005-i025.jpg graphic file with name foods-10-02005-i026.jpg graphic file with name foods-10-02005-i027.jpg graphic file with name foods-10-02005-i028.jpg graphic file with name foods-10-02005-i029.jpg graphic file with name foods-10-02005-i030.jpg
pH 6 graphic file with name foods-10-02005-i031.jpg graphic file with name foods-10-02005-i032.jpg graphic file with name foods-10-02005-i033.jpg graphic file with name foods-10-02005-i034.jpg graphic file with name foods-10-02005-i035.jpg graphic file with name foods-10-02005-i036.jpg
pH 7 graphic file with name foods-10-02005-i037.jpg graphic file with name foods-10-02005-i038.jpg graphic file with name foods-10-02005-i039.jpg graphic file with name foods-10-02005-i040.jpg graphic file with name foods-10-02005-i041.jpg graphic file with name foods-10-02005-i042.jpg
pH 8 graphic file with name foods-10-02005-i043.jpg graphic file with name foods-10-02005-i044.jpg graphic file with name foods-10-02005-i045.jpg graphic file with name foods-10-02005-i046.jpg graphic file with name foods-10-02005-i047.jpg graphic file with name foods-10-02005-i048.jpg
pH 9 graphic file with name foods-10-02005-i049.jpg graphic file with name foods-10-02005-i050.jpg graphic file with name foods-10-02005-i051.jpg graphic file with name foods-10-02005-i052.jpg graphic file with name foods-10-02005-i053.jpg graphic file with name foods-10-02005-i054.jpg
pH 10 graphic file with name foods-10-02005-i055.jpg graphic file with name foods-10-02005-i056.jpg graphic file with name foods-10-02005-i057.jpg graphic file with name foods-10-02005-i058.jpg graphic file with name foods-10-02005-i059.jpg graphic file with name foods-10-02005-i060.jpg
pH 11 graphic file with name foods-10-02005-i061.jpg graphic file with name foods-10-02005-i062.jpg graphic file with name foods-10-02005-i063.jpg graphic file with name foods-10-02005-i064.jpg graphic file with name foods-10-02005-i065.jpg graphic file with name foods-10-02005-i066.jpg
pH 12 graphic file with name foods-10-02005-i067.jpg graphic file with name foods-10-02005-i068.jpg graphic file with name foods-10-02005-i069.jpg graphic file with name foods-10-02005-i070.jpg graphic file with name foods-10-02005-i071.jpg graphic file with name foods-10-02005-i072.jpg