A mechatronics engineer works to automate the transfer of materials and goods, and the manufacturing process. Their tasks involve identifying areas for task automation, designing, developing and testing potential mechatronic devices, and implementing design solutions.
A typical tea bag has somewhere between a gram and two grams of stuff in it. If the entire contents were nothing but fructose, and that fructose completely dissolved when you made your tea, you'd consume between 4 and 8 calories (carbohydrates contain 4 calories per gram) per cup of tea -- so that's the ceiling.
There are about two grams of dried green tea leaves in a standard bag of tea. That amount is about four times higher than a standard capsule of green tea powder (about one-half gram). The two substances cannot be strictly compared, because green tea powders are a far more processed product than dried green tea leaves.