[permaculture] oxygenation of water
lfljvenaura at gmail.com
Wed Apr 3 22:20:42 EDT 2013
On Wed, Apr 3, 2013 at 8:27 PM, elizabeth bell <whatintheworld1234 at gmail.com
> i remember a question about oxygenating water in a hydroponic system.
> imagine washcloth material under water with air coming through the
> the air could be pumped in through a bellows.
> i've been reading about saponins (sp?) ..wonder if they have a place in
> hydroponics and water remediation
How would they be used in water remediation?
And in hydroponics? I must have missed something.
Role in plant ecology and impact on animal foraging
In plants, saponins may serve as
 <http://en.wikipedia.org/wiki/Saponin#cite_note-metacyc2008a-4> and to
protect the plant against microbes and fungi
.[*citation needed <http://en.wikipedia.org/wiki/Wikipedia:Citation_needed>*
] Some plant saponins (e.g. from oat and spinach) may enhance nutrient
absorption and aid in animal digestion.
Most saponins, which readily dissolve in water, are poisonous to
Therefore, in ethnobotany <http://en.wikipedia.org/wiki/Ethnobotany>, they
are primarily known for their use by indigenous people in obtaining aquatic
Use in animal feeding
Saponins are used widely for their effects on
ammonia<http://en.wikipedia.org/wiki/Ammonia>emissions in animal
 <http://en.wikipedia.org/wiki/Saponin#cite_note-zentner-21> The mode
of action seems to be an inhibition of the
urease<http://en.wikipedia.org/wiki/Urease>enzyme, which splits up
urea <http://en.wikipedia.org/wiki/Urea> in feces into ammonia and carbon
dioxide <http://en.wikipedia.org/wiki/Carbon_dioxide>. Animal trials have
shown that a reduced ammonia level in farming operations causes less
damages to the respiratory tract of animals, and may help to make them less
vulnerable to diseases.
> flower power
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