Composition comprising oligogalacturonans and polycationic saccharides
A ‘bioactive’ composition that has one or more oligogalacturonans ((1→4)-α-D-galacturonan) or any other oligosaccharides (oligoguluronans) that may present an ‘egg box’ conformation, this conformation being further stabilized by one or more polycationic saccharide(s), preferably either a chitosan oligosaccharide or a chitosan polysaccharide. A method prepares this composition and it is used, in medical, pharmaceutical, agricultural, nutraceutical, food, feed, textile, cosmetic, industrial and/or environmental applications.
1. An aqueous solution comprising one or more oligogalacturonan(s) with a degree of polymerization comprising between 9 and 20 and having a dimeric egg box conformation stabilized by one or more chitosan oligosaccharide, wherein the aqueous solution does not form a gel.
2. The solution according to claim 1 , wherein the chitosan oligosaccharide comprises a degree of polymerization higher than 5.
3. The solution according to claim 1 , wherein the chitosan oligosaccharide comprises a degree of acetylation lower than 50%.
4. The solution according to the claim 1 , further comprising one or more element(s) selected from the group consisting of other saccharides, growth regulators or growth factors, minerals, ions, nutriments, food additives, flavourings, colours, vitamins, phytonutrients, KH2PO4 and a bioactive molecule.
5. The solution according to the claim 1 , further, comprising a product selected from the group consisting of a pharmaceutical composition, a nutraceutical composition, a food or feed composition including a functional food or a functional feed, a phytosanitary product, a fertilizer, an adjuvant of these products, a phytohormone replacement, a phytohormone enhancement, and a phytohormone modulator.
6. The solution of claim 5 , wherein the phytosanitary product is a fungicide.
7. The solution of claim 1 , comprising an anti-fungal adjuvant.
8. A method to induce protection of a plant against infection by plant pathogens, which comprises the step of adding the composition of claim 1 to a plant.
9. A fertilization method which comprises the step of adding the solution of claim 1 to a plant or to a plant seed.
10. A method of wound healing treatment, which comprises the step of administrating the solution of claim 1 to a subject having a wound in need of healing treatment.