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Soil bacteria and natural biotechnology |
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 A didactic use of soil bacteria from nodules on leguminous plant roots
Hands-on activities enabling students to extract bacteria from nodules of leguminous plant roots, to grow them and infect roots of different leguminous plants.
This activity can be done in a multiphase project starting from the growing of soil bacteria and free living nitrogen fixing bacteria using EIBE protocols
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Immobilised yeast |
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 Immobilisation of yeast in calcium alginate beads
A practical method of immobilising yeast cells in calcium alginate is described. The entrapped cells can then be used to ferment sugar solutions. The volume of carbon dioxide produced can be measured.
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Oyster cap mushrooms |
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 How to grow oyster mushrooms at home
Oyster cap mushrooms can easily be grown on clean, moistened toilet paper. This method is a good introduction to mycology, particularly for younger school pupils, because after the initial incubation the mushrooms appear within days. Investigations into the effect of light and ventilation on the shape of fruiting bodies can also be carried out.
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Peeling citrus fruits |
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 Pectinase provides a gentle way to peel citrus fruits
A simple practical protocol, allowing students to investigate how enzymes may be used to remove the peel from citrus and other fruits.
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The raw and the cooked |
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 The influence of temperature on the colour of meat
Different portions of minced meat are warmed up in a hot water bath to different temperatures from 50 to 80 °C and immediately cooled down in iced water. The meat is filtered and the colour of the supernatant is evaluated.
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