BioSteel

spidergoat

BioSteel is a trademark name for a high-strength fiber material made of a spider silk-like protein extracted from the milk of genetically modified goats, made by Nexia Biotechnologies. Biosteel and other biopolymers are being researched to provide lightweight, strong, and versatile materials for a variety of medical and industrial applications. Nexia Biotechnologies plans to use the spider silk from the milk of transgenic goats for bullet proof vests and anti-ballistic missile systems.

The company has successfully generated distinct lines of goats that produce in their milk recombinant versions of either the dragline silk proteins. When the female goats lactate, the milk, containing the recombinant silk, is harvested and subjected to traditional chromatographic techniques in order to purify the corresponding recombinant silk proteins to homogeneity. The purified silk proteins are then dried, dissolved using appropriate solvents and transformed into microfibers using wet-spinning fiber production methodologies.

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