Hi, searching about the extraction of papain, I found that you can scratch the skin of a green papaya with a knife (Not taking out the green papaya) to extract the papain, the process is repeated every 2 weeks and Mature fruits are discarted (may be used for some fpj or compost) , this will greatly decrease the production of papaya in this plant.
For papain dilution mix it with water and use a filter, I havenβt tried it , maybe Iβll try it this week and letβs see what happens!
thatβs were I found it
Peace βοΈ
https://repositorio.uniandes.edu.co/bitstream/handle/1992/23586/u303039.pdf