公开(公告)号：US20210214645A1

公开(公告)日：2021-07-15

申请号：US17058932

申请日：2019-05-27

Applicant: KANEKA CORPORATION

Inventor： Takafumi IGARI ,  Wanying LEE ,  Shingo KOBAYASHI

IPC: C11C1/10 ,  C12P7/62

Abstract: A free fatty acid-containing substance, which is a waste liquid or by-product obtained in a process for producing palm oil or which is a hydrolysate of the waste liquid or by-product, is subjected to distillation treatment to obtain a free fatty acid fraction satisfying the requirements (i), (ii) and (iii), and a polyhydroxyalkanoate-producing microorganism is cultured in a culture solution containing the free fatty acid fraction. (i) The content of squalene is 0.05 wt % or less. (ii) The ratio of a peak area of trimethylindene to a peak area of a naphthalene-d8 standard is 110 or less in first-dimensional dynamic headspace-GC/TOFMS analysis. (iii) The ratio of a peak area of butyric acid to a peak area of a naphthalene-d8 standard is less than 10 in first-dimensional dynamic headspace-GC/TOFMS analysis.