For DIY, micvac.com is safe and may fit to the meal-prep community very well.
The basic idea is a single-use valve based plastic package that lets you cook the food in a microwave in a closed container with an open valve(for steam release), but once it starts cooling, the valve closes,all bacteria are dead, the steam inside the package than condenses , creating low-pressure inside the package, similar to vacuum packing.
They describe the tech in their site, and in their patents.
Diy for it seems tough, you have engineer the right valve and package to ensure that every food, in every microwave , will get sterilized by the heat.
The basic idea is a single-use valve based plastic package that lets you cook the food in a microwave in a closed container with an open valve(for steam release), but once it starts cooling, the valve closes,all bacteria are dead, the steam inside the package than condenses , creating low-pressure inside the package, similar to vacuum packing.
They describe the tech in their site, and in their patents.
Diy for it seems tough, you have engineer the right valve and package to ensure that every food, in every microwave , will get sterilized by the heat.