Comsats Institute of Information Technology

Comsats University Islamabad

Nawshad Muhammad

Muhammad Samie

Ather Farooq Khan

Farasat Iqbal

Hamad Khalid

A method is provided for extraction of fine silk fibroin powder fromsilk cocoons. The conventional method of silk processing includes dissolution of the degummed silk fibers in some strong salt solutions followed by a dialysis step. The earlier reported strong salt solutions have either associated environment issues or lower dissolution ability for silk. However, the provided method includes degumming silk cocoons, drying and cutting the degummed silk fibers, mixing the fibers with an ionic liquid, stirring the mixture, regeneration of silk from the mixture with the help of an anti-solvent followed by centrifugation, drying the precipitated silk and finally obtaining a fine powder of silk.

Method for extraction of powdered silk fibroin fromcocoons using aqueous solution of basic ionic liquid

An exemplary embodiment provides a method for extracting hydroxyapatite. The method includes washing fish scales with water, drying the washed fish scales, grinding the washed fish scales, mixing the ground fish scales with an ionic liquid, and centrifuging the mixture of the ground fish scales and the ionic liquid to collect a hydroxyapatite powder as a precipitate.

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Lahore, Pakistan

Nawshad Muhammad