Silkworm lifecycle

Serrapeptase is found in the digestive tracts of silkworms.  They use it to not only digest the tough mulberry leaves that they feed on,  but also to eat a whole in the cocoon when they emerge as the moth.

This video shows the complete life-cycle of the silkworm:

Life cycle of the silkworm


  • Silkworm eggs start off yellow and become darker as the larvae develop and are ready to hatch.
  • The larvae need to eat within 24 hours of hatching or will die.
  • They eat mulberry leaves.
  • As the larvae grow, they shed their skin as the old one gets too small.  You can tell when they are ready to shed the skin, because they hold their head up.
  • As the cocoon is made, you can see through it by holding it up to the light.  The caterpillar can be seen inside working away, building the cocoon.
  • The female is typically larger as she is full of eggs.

About Andy

I suffered a serious neck injury when I was about 19 years old. That problem didn't affect me until I was in my 40s, but I then suffered two prolapsed discs in my neck and problems with my right arm and hand. Serrapeptase was recommended by my chiropractor to try to break up the scar tissue around the vertebrae that were causing me the problems. It seemed to help me with my problem, so created this site to help inform people what serrapeptase is, what it can do and just as importantly, what it cannot do. I hope you find the information useful.

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