jbbc09 feasibility of using microbes to make...
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Introduction
According to COP21, textile industry is the second-largestpolluter globally, second to the oil. Different stages oftextile production produce different kinds of harmfulpollutants. To relief the environmental problem broughtby textile industry, Kombucha tea SCOBY is proposed byfew fashion designer to be used as textile material.Kombucha tea is a lightly fizzy drink and can assist indigestive health and liver detoxification. It is made bymixing symbiotic culture of bacteria and yeast withsweetened tea. During fermentation, a pellicle formedon surface is called SCOBY. It is 100% biodegradablecellulose and has leather-liked texture. In our project, westudy the feasibility of using the microbes in Kombuchatea to produce “textile material” – SCOBY by comparingits “textile” properties with common textile materials(cotton and polyester).
Experiment
Growing SCOBY
Measuring Textile Properties of SCOBY
Mix the sugar/tea solution with microbes
in Kombucha tea
Cover the mixture and grow the “SCOBY”
over week
Add sugar and tea bags into water and
boil the mixture
RESULTS AND DISCUSSION
Feasibility of Using Microbes to Make TextileJBBC09
Conclusion
SCOBY - 100% Cellulose
Biodegradable and
Environmentally friendly
Modern textile industry- The second largest polluter globally
References• http://www.abc.net.au/news/2014-09-24/brewing-clothes-queensland-fashion-student-grow-garments-in-jar/5765060• https://www.washingtonpost.com/national/health-science/the-fashion-industry-tries-to-take-responsibility-for-its-pollution/2016/06/30/11706fa6-3e15-11e6-80bc-
d06711fd2125_story.html?utm_term=.17d6cb82a623
Lee Audrey Chu Man-ching Carrie Chiu Shun LokLeung Long Hei Ziv Wong Paolo
Scanning Electron Microscope (SEM)
To study the surface morphology of textile samples
Tensile Strength Test Heat Retention Test
SEM Scan
Under 10000X
Under 3000X
Tensile Strength Test
Tensile Strength of SCOBY increases with thickness
Heat Retention Test
Standardized
Red Tea SCOBY (compared with common textile materials) Highest tensile strength (with same thickness)
∵ weaved by very long and fine fabrics and intertwined very well
Best heat retention∵ SCOBY has less “porous” in structure
conserve heat energy much better
Feasible to use microbes
to make promising
textile material - SCOBY
Red Tea SCOBY Oolong Tea SCOBY Polyester Cotton
>10 mmPolyester and Cotton
have thicker fiber and
a lot “porous” than
SCOBYs
Red Tea SCOBY Oolong Tea SCOBY Green Tea SCOBY
Both Red Tea and Oolong TeaSCOBYs weaved continuouslyby longer and thinner “fiber”than Green Tea SCOBY
~0.1 mm ~0.5 mm
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
Red Tea SCOBY Oolong Tea SCOBY Polyester Cotton
Re
lati
ve T
en
sile
Str
en
gth
Comparing Relative Tensile Strengths of SCOBYs with Common Textile Materials
With same thickness,Red Tea SCOBY is the stiffest
Thinnest Red Tea SCOBY
keep warm the most !!!30
35
40
45
50
0 5 10 15 20 25 30 35
Tem
pe
ratu
re (
oC
)
Time (min)
Heat Durability Test for Different Textile
Oolong Tea SCOBY Cotton Polyester Red Tea SCOBY
Takes longest time to have same temperature drop
y = 33.077x
y = 81.714x
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0 0.02 0.04 0.06 0.08 0.1 0.12
Ten
sile
Str
en
gth
(N
mm
-2)
Thickness of SCOBY (mm)
Thickness Effect on Tensile Strength of SCOBY
Oolong Tea SCOBY
Red Tea SCOBY
Red Tea SCOBY > Oolong Tea SCOBY
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