Novel package for liquid products

Abstract

These results show that these two packagings are suitable The invention relates to a packaging for a liquid product containing yeast, that comprises at least one pervious material having an exchange surface S such that the ratio S/M is of at least 1.2, with S in cm 2 and M being the mass of the liquid product in g, and having an O 2 permeability coefficient CP of between 200 and 9000 cm 3 /m 2 .24 h.bar, and/or the O 2 permeability coefficient CP ranging from 800 to 45000 cm 3 /m 2 .24 h.bar. The invention also relates to the use of such a packaging for containing a liquid product containing yeast. The invention further relates to a preservation method and to the use of a liquid product containing yeast.

1 .- 26 . (canceled) 
     
     
         27 . A packaging containing a yeast-containing liquid sourdough product comprising at least one permeable material the exchange surface S of which is such that the S/M ratio is at least 1.2, with S expressed in cm 2  and M the mass of the liquid product expressed in g, the coefficient of permeability (CP) to O 2  of which is between 200 and 9,000 cm 3 /m 2 .24 h.bar, and/or the coefficient of permeability (CP) to CO 2  of which is between 800 to 45,000 cm 3 /m 2 .24 h.bar 
     
     
         28 . The packaging of  claim 27 , wherein the coefficient of permeability (CP) to CO 2  is comprised between 2,400 and 8,000 cm 3 /m 2 .24 h.bar. 
     
     
         29 . The packaging of  claim 27 , wherein the coefficient of permeability (CP) to O 2  of which is comprised between 800 and 2,000 cm 3 /m 2 .24 h.bar. 
     
     
         30 . The packaging of  claim 27 , wherein the S/M ratio is at least 1.3. 
     
     
         31 . The packaging of  claim 27 , wherein the product (S/M)×CP to O 2  is comprised between 4,000 and 20,000. 
     
     
         32 . The packaging of  claim 27 , wherein the product (S/M)×CP to CO 2  is comprised between 15,000 and 80,000. 
     
     
         33 . The packaging of  claim 27 , wherein the yeast-containing liquid sourdough product has a viscosity of less than 20,000 centipoises measured at the temperature of 10° C. 
     
     
         34 . The packaging of  claim 27 , wherein the packaging preserves and maintains performance of the yeast-containing liquid sourdough product at temperatures ranging from 5° C. to 15° C. for a shelf life of 6 to 8 weeks. 
     
     
         35 . The packaging of  claim 27 , wherein the yeast-containing liquid sourdough product has a dry matter content comprised between 12% by weight to 20% by weight. 
     
     
         36 . The packaging of  claim 35 , wherein the yeast-containing liquid sourdough product has a dry matter content comprised between 15% by weight to 17% by weight. 
     
     
         37 . The packaging of  claim 27 , wherein the yeast-containing liquid sourdough product comprises an aqueous suspension of live yeast cells, live lactic bacteria cells, and flour. 
     
     
         38 . The packaging of  claim 27 , wherein within the packaging the yeast-containing liquid sourdough product comprises at least 10 6  colony-forming units of lactic acid bacteria per gram and at least 10 4  colony-forming units of yeast per gram. 
     
     
         39 . The packaging of  claim 27 , wherein the yeast-containing liquid sourdough product has a dry matter content comprised between 13% by weight to 20% by weight and contains from 15 g/kg to 30 g/kg of lactic acid and from 6 g/kg to 10 g/kg of acetic acid. 
     
     
         40 . The packaging of  claim 27 , wherein the yeast-containing liquid sourdough product has a dry matter content comprised between 27% by weight to 35% by weight. 
     
     
         41 . A packaging containing a yeast-containing liquid sourdough product having a viscosity of less than 20,000 centipoises measured at a temperature of 10° C. and a dry matter content ranging from 12% by weight to 20% by weight, said packaging comprising: at least one permeable material, the exchange surface S of which is such that the S/M ratio is at least 1.2, with S expressed in cm 2  and M the mass of the liquid product expressed in g, the coefficient of permeability (CP) to O 2  of which is comprised between 800 and 2,000 cm 3 /m 2 .24 h.bar, and the coefficient of permeability (CP) to CO 2  of which is comprised between 800 to 45,000 cm 3 /m 2 .24 h.bar, said at least one permeable material is selected from the group consisting of synthetic polymers and organic films, wherein the packaging preserves and maintains performance of the yeast-containing liquid sourdough product at temperatures ranging from 5° C. to 15° C. 
     
     
         42 . The packaging of  claim 41 , wherein the yeast-containing liquid sourdough product has a dry matter content comprised between 15% by weight to 17% by weight. 
     
     
         43 . The packaging of  claim 41 , wherein the performance of the yeast-containing liquid sourdough product is maintained for a shelf life of 6 to 8 weeks. 
     
     
         44 . The packaging of  claim 43 , wherein loss of biomass of the yeast-containing liquid sourdough is less than 5% within the packaging after 8 weeks. 
     
     
         45 . The packaging of  claim 41 , wherein the permeable material is not microporous, does not include a vent and is impermeable to liquid water. 
     
     
         46 . The packaging of  claim 41 , wherein the at least one permeable material is selected from the group consisting of synthetic polymers and organic films, and said synthetic polymer is selected from the group consisting of polyolefins and PET polyester, said organic films are selected from the group consisting of cellulose films, starch-based films, protein-based films to which a plasticizer has optionally been added.