Molluscicidal Agents and Uses Thereof
AssigneeBiotelliga Holdings Limited
InventorStephen Reynold Ford
Life of this patent
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Abstract
The present invention provides molluscicidal saponins and saponin fractions from Camellia sinensis, together with compositions comprising such saponins and saponin fractions, and methods of preparing same. Methods for the control of molluscs, including terrestrial molluscs, such as slugs or snails, using the saponins and saponin fractions or compositions comprising said saponins or saponin fractions optionally together with one or more pesticidal agents including molluscicidal agents, are also provided.
Claims21
1-25. (canceled)
A method for producing a composition comprising one or more saponins from Camellia sinensis, the method comprising:
- providing Camellia sinensis or a tissue therefrom or an extract thereof, wherein the Camellia sinensis, the tissue, or the extract comprises one or more saponins,
- admixing the Camellia sinensis or the tissue therefrom or the extract thereof and water,
- maintaining the admixture for a first period at
- a) greater than about 100° C., or
- b) greater than about 1 atmosphere, or
- c) both (a) and (b),
- maintaining the admixture for a second period at
- d) about room temperature, or
- e) less than one atmosphere, or
- f) both (d) and (e), and
- removing the supernatant, and optionally combining the supernatant with one or more agriculturally-acceptable carriers, thereby to form the composition.
A method of preparing a saponin or saponin fraction having molluscicidal activity, the method comprising:
- providing Camellia sinensis or a tissue therefrom or an extract thereof, wherein the Camellia sinensis, the tissue, or the extract comprises one or more saponins,
- admixing the Camellia sinensis or the tissue therefrom or the extract thereof and water,
- maintaining the admixture for a first period at
- a) greater than about 100° C., or
- b) greater than about 1 atmosphere, or
- c) both (a) and (b),
- maintaining the admixture for a second period at
- d) about room temperature, or
- e) less than one atmosphere, or
- f) both (d) and (e), and
- removing the supernatant, optionally purifying the saponin or saponin fraction, thereby to recover the saponin or saponin fraction.
A composition comprising one or more molluscicidal saponins or one or more molluscicidal saponin fractions from Camellia sinensis and comprising at least one agriculturally acceptable carrier, wherein the composition is or comprises an aqueous extract from Camellia sinensis wherein the extract is or was prepared by extraction with aqueous solvent at
- (a) greater than about 100° C., or
- (b) greater than one atmosphere, or
- (c) both (a) and (b).
An isolated, purified or substantially pure molluscicidal saponin fraction from Camellia sinensis, wherein the fraction is or comprises an aqueous fraction from Camellia sinensis wherein the fraction is or was prepared by extraction with aqueous solvent at
- (a) greater than about 100° C., or
- (b) greater than one atmosphere, or
- (c) both (a) and (b).
A method of controlling one or more molluscs, the method comprising contacting the one or more molluscs with a composition comprising one or more molluscicidal saponins or one or more molluscicidal saponin fractions from Camellia sinensis and at least one agriculturally acceptable carrier, wherein the composition is or comprises an aqueous extract from Camellia sinensis wherein the extract is or was prepared by extraction with aqueous solvent at
- (a) greater than about 100° C., or
- (b) greater than one atmosphere, or
- (c) both (a) and (b).
Dependencies are inferred from the claim text.