Plant protecting and regulating compositions – Plant growth regulating compositions – Inorganic active ingredient which contains boron – silicon,...
Patent
1998-05-12
2000-06-27
Clardy, S. Mark
Plant protecting and regulating compositions
Plant growth regulating compositions
Inorganic active ingredient which contains boron, silicon,...
A01N 5906
Patent
active
060807016
DESCRIPTION:
BRIEF SUMMARY
This application has been filed under 35 USC 371 as the national stage of international application PCT/FR96/01813 filed Nov. 18, 1996.
BACKGROUND OF THE INVENTION
The object of the present invention is the use of aluminium chloride as a resveratrol synthesis elicitor in crop plants and edible products thereof, and in particular vine, grapes, grape juice and wine.
It is known that certain plants, such as the vine in particular, can synthesise, in response to a stress such as an ultra-violet light ray irradiation or a parasitic infection, natural molecules which enable them to adapt themselves to this stress. One of the principal constituents of these natural molecules is resveratrol (trans-3,5,4'-trihydroxystilbene).
It is also known that resveratrol possesses particularly interesting pharmacological properties which are usable notably in the prevention or in the treatment of certain human illnesses.
Thus, this molecule which may also be extracted from the roots of Polygonum cuspidatum is used notably in popular traditional Chinese and Japanese medicine in the treatment of hyperlipemia, arteriosclerosis, inflammatory illnesses and allergic illnesses.
Various studies have in fact demonstrated that resveratrol decreases platelet aggregation and exerts a protective effect vis-a-vis the oxidation of plasma lipoproteins, these two latter factors being implicated in the mechanisms of artherothrombogenesis which can lead to myocardial infarction.
The protective effect of resveratrol vis-a-vis the oxidation of plasma lipoproteins is particularly high, since it has been demonstrated that this effect is much more significant than that procured by vitamin E (.alpha.-tocopherol) which is considered to be a powerful natural anti-oxidising agent.
It has also been suggested that resveratrol could furnish a protection vis-a-vis cancer due to its anti-radical properties against free radicals implicated in the phenomena of cellular cancerisation.
Given the beneficial role exertable by resveratrol in the field of human health, it seems interesting to be able to have a simple means at one's disposal which enables increasing the resveratrol content of certain edible products.
SUMMARY OF THE INVENTION
It has been discovered in an entirely unexpected and surprising manner that aluminium chloride is capable of inducing the synthesis of resveratrol in crop plants with which it is placed in contact, as well as in their transformed products.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is more particularly applied to the vine and its products which are grapes, grape juice and wine.
The invention can of course be applied also to any crop plant which naturally produces resveratrol, amongst which peanut may notably be cited.
This plant can be a shrub, as in a case of a vine, or even a tree.
The expression "product" used within the context of the present invention designates any product which originates naturally from the plant, notably such as the fruit, as well as any product resulting from further transformation treatments of the fruit.
According to a particular characteristic of the use in accordance with the invention, the aluminium chloride is applied via the foliar route and/or in the case of trees or shrubs, by injection into the trunks.
Advantageously, the aluminium chloride is applied in an amount of 0.1 to 100 kilograms, and preferably from 10 to 50 kilograms, per hectare of cultivated ground and per treatment.
Of course, the active doses which can be used will vary notably according to the plant, the climatic conditions, and to the application route selected.
In the case of the vine, the aluminium chloride will be applied preferably via the foliar route and in an amount of 0.5 to 50 kilograms, and preferably from 5 to 25 kilograms per hectare and per treatment.
The aluminium chloride can be applied at any stage of the culture of the plants concerned.
In the particular case of the vine, it will preferably be applied from flowering to the maturity of the grape berry.
Advantageously, and notably in every
REFERENCES:
patent: 5043005 (1991-08-01), Keller et al.
Adrian Marielle
Bessis Roger
Jeandet Philippe
Joubert Jean-Marie
Yvin Jean-Claude
Clardy S. Mark
Laboratoires Goemar S.A.
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