How to speed up the
ripening of banana ?
S3 Biology project
Group member :
林桂萍 (3C) 李少文 (3C)
李文秀 (3C) 黎少芳 (3C)
張楊洪 (3C)
Aim：
To find out what environmental
factors can speed up the ripening
of banana.
Materials required
Non-ripen banana
Materials required
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9 small plastic box
1 large plastic box
cotton
moist absorbent
black plastic bag
lamp
• refrigerator
• thermometer
• digital camera
The experiment was setup
as shown below.
In order to increase the
accuracy of the experiment, two
bananas were put in each plastic
box.
Set-up 1 :
To investigate the effect of temperature on the
ripening of banana
Put on top of table
Put inside the
refrigerator
Set-up 2 :
To investigate the effect of light on the ripening of
banana
Covered with
black plastic bag
Exposed to light
throughout the whole
experiment
Set-up 3 :
To investigate the effect of humidity on the
ripening of banana
Moist cotton
Moist absorbent
Set-up 4 :
To investigate the effect of the volume of oxygen
on the ripening of banana
Small volume
of oxygen
Large volume of oxygen
The experiment was started
and was done for 4 days.
Result of the set-up 1 :
Put on top of table
Put inside the refrigerator
The banana ripened faster at a higher
temperature.
Result of the set-up 2 :
Covered with black plastic bag
Exposed to light throughout the
whole experiment
There was no difference.
Result of the set-up 3 :
Moist cotton
Moist absorbent
The banana ripened faster at a lower humidity.
Result of the set-up 4 :
Small volume of oxygen
Large volume of oxygen
There was no difference.
Conclusion :
Only temperature and humidity
could affect the ripening of
banana.
Higher temperature and lower
humidity could speed up the
ripening of banana.
Acknowledgement :
We give thanks to our Biology teacher (J)
for his advise on the design of the experiment,
and Miss Tuet (ZH) for her I.T. support, and
the laboratory technician (YC) for his technical
support.