PLA with the lowest printing temperature

Hey,

Here is my question,

What is the commercial PLA filament with lowest printing temperature in your experience? I'm working on a science project and the goal is to mix PLA with a certain additive material which tends to burn quite easily. Are there any other ways to prevent this happening? What is the best way to decrease the time that the printing material spends in the extruder/hot-end?


Thanks,
AL