Because of its recalcitrance, lignin complicates the utilization of biomass polysaccharides in biorefineries and increases the energy consumption in mechanical pulping (Jiang et al.2008a).2008a
The inherent complexity and heterogeneity of lignocellulose complicate the fermentation strategies centered on complete utilization of all sugars present.
However, MFCs fed with hydrocarbon fuel like formic acid suffers low fuel utilization problem because of sluggish kinetics, complicate reaction condition and dilemma on cell control.
Besides, ethical issues and rules involving the utilization of biological samples from human and animals contribute to complicate PG purification.
Although these methods can improve the performance of microengines and the motion speeds to some extent, the preparation process is relatively complicated and the poor utilization of the expensive Pt material is also an obvious drawback.
In humans, understanding the effect on the offspring's epigenome of folic acid administration to pregnant women is complicated by the widespread utilization of folic acid as food supplement.
"It can complicate an already complicated situation".
Coinfection can complicate treatment.
