Granted Patent B2

US 9,603,881 · App. 12/945,323 · Granted Mar 28, 2017

Abstract

Claims (34)

1. A method for obtaining a bioactive fraction from a photosynthetic organism, said method comprising:

providing an aquatic photosynthetic organism selected from the group consisting of Macrocystis spp. and Chaetomorpha spp.;

cultivating the aquatic photosynthetic organism under stress-inducing cultivation conditions comprising subjecting the aquatic photosynthetic organism to a stress factor or to a plurality of stress factors;

separating the stress-induced aquatic photosynthetic organism into cell juice and a cell walls component;

treating the cell juice under conditions effective to yield a bioactive fraction, wherein said bioactive fraction is selected from the group consisting of a cell serum fraction, a membrane fraction, a cell juice supernatant fraction, and a cell serum filtrate fraction; and

isolating said bioactive fraction from the treated cell juice,

wherein the stress factor or plurality of stress factors are selected from the group consisting of ultraviolet light stress by applying UVB irradiance of 1-2 mW/cm 2 during 3-12 hours a day, ozone stress by injecting ozone to obtain a redox potential from 200 to 400 and a concentration of dissolved O 2 from 7.0 to 9.0 mg/l, osmotic pressure stress by applying osmolality of cultivation media from 600 to 1200 mOs/kg, reducing hydrostatic pressure compared to that in original conditions, and a combination thereof, and

wherein the isolated bioactive fraction has at least one altered characteristic compared to a corresponding bioactive fraction isolated from a non-stress-induced aquatic photosynthetic organism, and

said characteristic is selected from the group consisting of physico-chemical properties, surface modification properties, moisturization properties, anti-inflammatory activity, and anti-ageing activity,

wherein the physico-chemical properties are properties selected from the group consisting of surface tension, dry matter content, and osmolality, and

wherein the anti-inflammatory and/or anti-ageing activities are selected from the group consisting of elastase inhibition, trypsin inhibition, anti-oxidant activity, and free-radical scavenging activity.

2. The method according to claim 1 , wherein said Macrocystis spp. is selected from the group consisting of Macrocystis angustifolia, Macrocystis integrifolia, Macrocystis laevis , and Macrocystis pyrifera.

3. The method according to claim 1 , wherein said Chaetomorpha spp. includes, a Chaetomorpha spp. selected from the group consisting of Chaetomorpha aerea, Chaetomorpha antennina, Chaetomorpha basiretorsa, Chaetomorpha brachygona, Chaetomorpha californica, Chaetomorpha cannabina, Chaetomorpha crassa, Chaetomorpha gracilis, Chaetomorpha linum, Chaetomorpha melagonium, Chaetomorpha natalensis , and Chaetomorpha spiralis.

4. The method according to claim 1 , wherein the bioactive fraction is a cell serum fraction.

5. The method according to claim 1 , wherein the bioactive fraction is a membrane fraction.

6. The method according to claim 1 , wherein the bioactive fraction is a cell juice supernatant fraction.

7. The method according to claim 1 , wherein the bioactive fraction is a cell serum filtrate fraction.

8. A method for obtaining a bioactive fraction from a photosynthetic organism, said method comprising:

providing an aquatic photosynthetic organism selected from the group consisting of Macrocystis spp. and Chaetomorpha spp.;

cultivating the aquatic photosynthetic organism under stress-inducing cultivation conditions comprising subjecting the aquatic photosynthetic organism to a plurality of stress factors;

separating the stress-induced aquatic photosynthetic organism into cell juice and a cell walls component;

treating the cell juice under conditions effective to yield a bioactive fraction, wherein said bioactive fraction is selected from the group consisting of a cell serum fraction, a membrane fraction, a cell juice supernatant fraction, and a cell serum filtrate fraction; and

isolating said bioactive fraction from the treated cell juice,

wherein the plurality of stress factors include at least two stress factors selected from the group consisting of ultraviolet light stress by applying UVB irradiance of 1-2 mW/cm 2 during 3-12 hours a day, ozone stress by injecting ozone to obtain a redox potential from 200 to 400 and a concentration of dissolved O 2 from 7.0 to 9.0 mg/l, osmotic pressure stress by applying osmolality of cultivation media from 600 to 1200 mOs/kg, reducing hydrostatic pressure compared to that in original conditions, and a combination thereof, and

wherein the isolated bioactive fraction has at least one altered characteristic compared to a corresponding bioactive fraction isolated from a non-stress-induced aquatic photosynthetic organism, and

said at least one characteristic is selected from the group consisting of physico-chemical properties, surface modification properties, moisturization properties, anti-inflammatory activity, and anti-ageing activity,

wherein the physico-chemical properties are properties selected from the group consisting of surface tension, dry matter content, and osmolality, and

wherein the anti-inflammatory and/or anti-ageing activities are selected from the group consisting of elastase inhibition, trypsin inhibition, anti-oxidant activity, and free-radical scavenging activity.

9. The method according to claim 8 , wherein said Macrocystis spp. includes a Macrocystis spp. selected from the group consisting of Macrocystis angustifolia, Macrocystis integrifolia, Macrocystis laevis , and Macrocystis pyrifera.

10. The method according to claim 8 , wherein said Chaetomorpha spp. includes, a Chaetomorpha spp. selected from the group consisting of Chaetomorpha aerea, Chaetomorpha antennina, Chaetomorpha basiretorsa, Chaetomorpha brachygona, Chaetomorpha californica, Chaetomorpha cannabina, Chaetomorpha crassa, Chaetomorpha gracilis, Chaetomorpha linum, Chaetomorpha melagonium, Chaetomorpha natalensis , and Chaetomorpha spiralis.

11. The method according to claim 8 , wherein the bioactive fraction is a cell serum fraction.

12. The method according to claim 8 , wherein the bioactive fraction is a membrane fraction.

13. The method according to claim 8 , wherein the bioactive fraction is a cell juice supernatant fraction.

14. The method according to claim 8 , wherein the bioactive fraction is a cell serum filtrate fraction.

Assignments (6)