Reduced oxygen concentrations in food packaging decrease the
level of lipid oxidation (Andersson & Lingnert, 1997, 1998a; Lloyd,Hess, & Drake, 2009). However, very low oxygen concentrations
are needed to avoid lipid oxidation (Karel, 1986), and in cream
powder the detrimental effect of lipid oxidation on sensory stability
has been observed already at oxygen concentrations of 0.3 ml/l
after 25 weeks of storage at 30 C (Andersson & Lingnert, 1998b).