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 why cocoon immersed in hot water?

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The cocoon are put into the hot water to kills the worms inside the cocoons and also loosens the hold of the gum sericin on the filaments. If worms are not killed, they will secrete a fluid that will dissolve all the silk. 

 

@Others.. Good work..keep posting!

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for softening of the fibre and to kill the the worm inside

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to kill the worm inside the cocoon.

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to kill the wom inside the cocoon.

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 Cocoons are immersed in hot water so the silk fibres come of and the cocoons die.

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cocoon is immersed in hot water for softening the sericin so that to unwind the silk filament which goes as one fibre.

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