Page 12 - Technical Saw Palmetto Booklet
P. 12

MTC Industries, Inc.
                                                                        Herbsine Bioengineering Co., Ltd.




                             8. Cloud point, Pour point and Freezing point


                  When  the  ambient  temperature  is  lower  than  15°C,  saw
                  palmetto  oil  begins  to  solidify,  this  causing  serious
                  problems to the soft capsule manufacturers in the northern
                  hemisphere. This means the saw palmetto oil, which isn’t
                  taken  insulation  measures  from  November  to  next  March
                  every year, will partially or completely freeze.
                  Even  worse,  some  unexperienced  trading  companies  or
                  users  consider  solidified  saw  palmetto  oil  to  be
                  problematic.
                  The freezing point of vegetable oil is mainly determined by
                  the  ratio  of  saturated  fat  to  unsaturated  fat  in  the  oil.
                  Unfortunately,  saw  palmetto  oil  contains  more  than  50%
                  saturated fatty acids and has a much higher freezing point
                  than common vegetable oils. In addition, the freezing point
                  of oil is not a certain temperature but a range. It will begin
                  to appear a little floc from a certain temperature, but not all
                  freeze.
                  According  to  our  experience,  when  the  temperature  is
                  below  15°C,  saw  palmetto  oil  is  no  longer  clear  and
                  transparent.  Gradually,  there  are  more  and  more
                  precipitates and the oil to become turbid, which is called
                  cloud point. When the oil can’t flow, it is called pour point.
                  Finally, the oil is completely transformed into a solid state.


                  Take 10 g sample of each saw palmetto oil. After testing,
                  sample  placed  at  13℃  for  more  than  20  minutes,  all  sample  begin  to  turbid  till
                  completely  freeze.  Color  for  sample  UV-171023  is  very  dark,  the  turbidity  is  not
                  obvious, but it still freezes.












                  255 Oser Ave., Hauppauge, NY 11788 Tel: 631-274-4818                                                  10/28
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