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ISHS Acta Horticulturae 325: VI International Symposium on Flower =
Bulbs
THE INHIBITORY EFFECT OF GARLIC HOMOGENATE AND AJOENE, A =
COMPOUND OF GARLIC, ON GROWTH OF STAGONOSPORA CURTISII (BERK.) SACC. IN =
VITRO
Author: A. Saniewska
Abstract:
Garlic clove homogenate at concentration of 0.25% in PDA =
medium evidently inhibited the mycelium growth of Stagonospora curtisil. =
Higher concentrations of garlic homogenates (0.5 and 0.75%) added to the =
medium inhibited the growth of the pathogen in higher degree and a =
concentration of 1.0% showed fungicidal effect.
Ajoene, a constituent of garlic, in a concentration of 30 =
mg/l in the medium, greatly delayed S. curtisii growth in vitro. At a =
concentration of 40 and 60 mg/l of ajoene, the inhibition of the growth =
of the fungus was a little higher.
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Amy,
I have no idea what Garlic clove homogenate. Where do you even get=20=
this? but what is more interesting is can we substitute garlic extract=20=
and clove essential oil and have the same effect? + do you have a
subscription to this site? they want $10 for 1 article, I thought that=20=
was a bit high.
Layth
> ISHS Acta Horticulturae 325: VI International Symposium on Flower =
Bulbs
bytes)
Hi Layth, I didn't read the article either, but what I would do, because I
don't mind the smell of garlic in my hands, is put enough garlic through a
press and rub that around the bulbs.
It kinda' sounds like it's merely a homogenization of garlic and water, but
I don't know for sure or what ratio:
Raw garlic homogenate has been the major preparation of garlic subjected to
intensive scientific study, as because it is the commonest way of garlic
consumption. Raw garlic homogenate is essentially same as aqueous extract of
garlic, which has been used in various scientific studies. Allicin (allyl
2-propenethiosulfinate or diallyl thiosulfinate) is thought to be the
principal bioactive compound present in aqueous garlic extract or raw garlic
homogenate. When garlic is chopped or crushed, allinase enzyme, present in
garlic, is activated and acts on alliin (present in intact garlic) to
produce allicin. Other important sulfur containing compounds presents in
garlic homogenate are allyl methyl thiosulfonate, 1-propenyl allyl
thiosulfonate and ?-L-glutamyl-S-alkyl-L-cysteine. The adenosine
concentration increases several-fold as the homogenate is incubated at room
temperature. The enzyme allinase responsible for converting alliin (S-allyl
cysteine sulphoxide) to allicin is inactivated by heat. Thus the water
extract of heat-treated garlic contains mainly alliin. Since garlic powder
is a simply dehydrated, pulverized garlic clove, the composition, especially
allinase activity of garlic powder is identical to those of fresh garlic.
However, dehydration temperature should not exceed 60??C, above which
allinase is inactivated [1].
http://www.nutritionj.com/content/1/1/4
http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pubmed&pubmedid=121
82765
Amy,
I have no idea what Garlic clove homogenate. Where do you even get
this? but what is more interesting is can we substitute garlic extract
and clove essential oil and have the same effect? + do you have a
subscription to this site? they want $10 for 1 article, I thought that
was a bit high.
Layth
Amy Fernandez wrote:
Hi Amy
I didn't get back to this until after writing my piece on Stagonospora.
Looks as If a garlic spray would be worth trying on infected bulbs
(probably just before leaf emergence would be likely to do the msot good)
Moira
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
Laythss . wrote:
Layth
I guess in lay language what was meant is that garlic cloves were
crushed up with a bit of water and added to the agar medium in a petrie
dish inoculated with the fungus and the more they put in the less the
fungus managed to grow.
Scientists always seem to use the most grandiose and often obscure
language. This is supposed to prevent confusion, but I sometime wonder!
Moira
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
