However, at 8 g/L RS-IBU feed, formulations were not very stable, as within 24 hours, a 6 wt % LC loss was observed (Fig. ). Finally, the LC of 8 g/L RS-IBU feed A-p RS EtEtOx-A/RS-IBU formulation dropped to the same level of M A-pEtEtOx-A/RS-IBU after 60 days. Similarly, the A-p RS PrMeOx-A/RS-IBU formulations were relatively stable for 60 days at 6 g/L RS-IBU feed (Fig. ). In contrast, at 8 g/L RS-IBU feed, stability was compromised.