A further DMC extraction increased the overall recovery percentage
to 61 ± 1% (a third re-extraction did not improve the
recovery, data not shown). Both the first and second PHAs have
high purity and very high Mw, but the PDI value of the ‘‘second
PHA’’ was slightly higher than that of the ‘‘first PHA’’(2.7 vs. 1.9,
3 entry 1 and Table 4 entry 1).