==== Class 4 : BIO DYES & BIOFABRICS ====
==== curcuma and oinions dyes ====
<panel type="default" title="Technics">

  * natural dye

</panel> 

<panel type="default" title="Material">

  * curcuma
  * Cotton
  * synthetic fabric
  * water

</panel>

<panel type="default" title="Tools">

  * Recipients
  * Mixing spoons 
  * Pot
  * electric plate
  * scale

</panel>

=== BIO DYES ===
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=== Assignment Project Description ===
**//The students can work in group, identifying tasks and splitting them, as long as they all proof they are able to carry out each task. They can choose to:

    Produce at least one natural dye, modifying it’s colour and mordanting it in different ways to dye at least 2 different categories of fibers.
    Explore dyeing with bacteria of different fibers and bacteria.//**

Compare natural dyeing on vegetable and synthetic fibre fabric. 

Use the dyeing of turmeric and onions that do not require biting.

=== Inspirations & References ===
[[http://www.colorants-naturels.com/fr/page_info.php?nm=Nuancier%20-%20Informations%20techniques|technique de teinture]]
this very rich color chart website

== Dye fabric strips with onion peelings and turmeric ==

==1/ Fabrics are recovered ==
bed linen in pure cotton  and Kitchen curtain made of nylon 

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==2/onion peelings are recovered from kitchen leftovers ===
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==3/kurkuma spice ==
Curcumin, the active ingredient of Indian saffron, is a powerful antioxidant that protects the body from cell damage caused by free radicals.

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==4/ Weigh of fibre ===

1/3 of the dry fabric weight

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==5/ Dip onion peelings in hot water ==
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==6/mix turmeric with hot water ==
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==7/Immerse the fabric in water ==
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==8/soak the fabric in water and gently stir until the dye is evenly distribute ==

==9/take the fabric out of the bath and rinse it with warm, clear water ==

==10/allow the fabric to dry ==
==11/the kurkuma dyeing is of an intense yellow and the onion dyeing is light yellow ==
we can see that turmeric and onion dyeing is darker on cotton fibre than synthetic fibre.

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==== Improvements and Challenges ====
the turmeric-dyed fabric gives a deep colour.

Does turmeric retain its antioxidant properties in the tissue?

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<panel type="default" title="See others Bio dyes and bio fabrics project">

<grid>

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<thumbnail>
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<caption>
[[fabricademy2017:students:julie.taris:class4-bio-dyes-biofrabrics:kombucha|Kombucha ]]
</caption>
</thumbnail>
</col>

<col xs="6" md="3">
<thumbnail>
{{:fabricademy2017:students:julie.taris:julie-taris-leather-fruit-20171121_110306_6_.jpg?900x900|}}
<caption> 
[[fabricademy2017:students:julie.taris:class4-bio-dyes-biofrabrics:leather-fruit|Leather fruit]]
</caption>
</thumbnail>
</col>
</grid>
</panel>