Caffeine content in different types of coffee can vary. A standard cup of coffee (around 8oz) will contain an average of 94.8mg of caffeine. An Espresso on the other hand will have an average of 63mg of caffeine, and a standard latte will contain an average of 77mg of caffeine. The caffeine content depends on the size, strength and type of coffee you are consuming.
Processed beans that are stored in ordinary containers will last around 10-14 days. Packaging at home using foil will extend the shelf life up to 3-4 weeks, whereas roasted beans packed in sealed four-layer paper bags can be stored for up to 6 months.