If you are wanting to sterilise them I'm guessing you want to grow them in tissue culture gel. If so, what I have read is you can use a 1% bleach solution to sterilise the unopened pods, soaking it for 20mins, then crack open the pod (in a flow hood or glove box) and spread the seeds out onto the gel. Or 3% to 5% hydrogen peroxide with 20g per litre sugar overnight will also sterilise the pods. but first rinse the pods under tap water for 5 mins. The seeds should be sterile inside the pod if it hasn't been damaged. That's all I got.