Biomimicry using

NanoscienceHemant Kumar

IIT Roorkee

RETICULE GIRAFFE

Reticulate giraffe are giraffe subspecies that live in

open woodlands and wooded grasslands in Somalia,

northern Kenya and southern Ethiopia

The giraffe (Giraffa camelopardalis) emits a

scent(due to presence of chemical compounds) that

can be detected by humans over considerable

distances

These compounds may deter microorganisms or

ectoparasitic arthropods. Most of these compounds

are known to possess bacteriostatic or fungistatic

properties against mammalian skin pathogens or other

microorganisms.

COMPOUNDS THAT ARE FOUND IN GIRAFFE’S HAIR

Compound Total ion current (TIC)(%)

Octane 5.6

3,5-Androstadien-17-one

8.1

Benzaldehyde 3.7

Heptanal 5.3

Octanal 2.9

Nonanal 22.5

p-Cresol 5.5

Indole 6.5

3-Methylindole

14.0

Tetradecanoic acid

8.1

Hexadecanoic acid

1.9

Eleven major volatile compounds were found in the dichloromethane extracts of both male and female G. c. Reticulata

Consisted of an alkane (octane), four aldehydes (benzaldehyde, heptanal, octanal, and nonanal), a phenol (p-cresol), two alkaloids (indole and 3-methylindole), two carboxylic acids (tetradecanoic and hex- adecanoic acids), and a steroid (3,5-androstadien-17one).

The levels of p-cresol in giraffe hair are sufficient to repel some ticks.

DETAILED STRUCTURE OF HAIR

SURFACE STRUCTURE OF SKIN

STRUCTURE OF HAIR

STRUCTURE OF MEDULLA

LONGITUDNAL CROSS SECTION OF HAIR

What can be done by this property?

Such kind of volatile nanoparticals or nanounits can be filled in jar which will help us repelling insects, microorganisms, and ticks. It is easy to make and will help protect people from various diseases such as lime disease and malaria.

The reticulated giraffe might inspire innovation in paint manufactures to protect the coat and finishes. This discovery will also takeaway insects from your house.

IS IT FEASIBLE and SUISTAINABLE ???

Idea is sustainable because all of the ingredients in it are non-toxic and fairly common.

From studying the giraffe’s hair we can watch the process of how the chemicals are made and mix together. After that, it is a simple matter of making an artificial version.

ARTIFICIAL SYNTHESIS

Compound Total ion current (TIC)(%)

Octane 5.6

3,5-Androstadien-17-one

8.1

Benzaldehyde

3.7

Heptanal 5.3

Octanal 2.9

Nonanal 22.5

p-Cresol 5.5

Indole 6.5

3-Methylindole

14.0

Tetradecanoic acid

8.1

Hexadecanoic acid

1.9

As mentioned in earlier discussion we know composition of all compounds so we only require knowledge of temperature ,pressure conditions…

For this ,we have to study the reaction conditions in natural synthesis of that scent.

THANK YOU....