Biopolymer-Based Preservation of Perishable Products

Patent metadata

Field	Value
Publication number	US-2022211059-A1
Application number	US-202117444293-A
Country	US
Kind code	A1
Filing date	Aug 3, 2021
Priority date	Mar 7, 2014
Publication date	Jul 7, 2022
Grant date	—

Abstract

Disclosed herein are biopolymer-based coatings and products incorporating such coatings. Related methods and use are also provided.

First claim

1 - 57 . (canceled)

58 . A product comprising a packaging item and a coating,
wherein at least a portion of the coating is in contact with at least a portion of the packaging item; wherein the coating comprises an amphiphilic polypeptide; wherein a perishable item is in contact with the packaging item; wherein the perishable item has an average shelf-life; and wherein the average shelf-life of the perishable item in contact with the packaging item is extended compared to a reference perishable item not in contact with the packaging item.

59 . The product of claim 58 , wherein the coating is on at least one side of the packaging item.

60 . The product of claim 58 , wherein the coating is on at least two sides of the packaging item.

61 . The product of claim 58 , wherein the coating is on only one side of the packaging item.

62 . The product of claim 58 , wherein the coating is positioned between at least two layers of the packaging item.

63 . The product of claim 58 , wherein the packaging item wraps the perishable item.

64 . The product of claim 58 , wherein the packaging item covers the perishable item.

65 . The product of claim 58 , wherein the packaging item is a bottle.

66 . The product of claim 58 , wherein the packaging item is edible.

67 . The product of claim 58 , wherein the coating comprises a nano- and/or micro-structure fabricated thereon or incorporated therein.

68 . The product of claim 58 , wherein the coating has a water diffusivity of less than 10 −6 cm 2 /s.

69 . The product of claim 58 , wherein the coating provides an oxygen permeability coefficient (Dk O2 ) of less than 10 −10 [(ml O2 •cm)/(cm•s•mmHg)].

70 . The product of claim 58 , wherein the coating further comprises an additive.

71 . The product of claim 58 , wherein the product retains one or more parameters of product quality when subjected to a temperature outside a recommended temperature range, wherein the reference item does not retain the one or more parameters of product quality when subjected to the temperature.

72 . The product of claim 58 , wherein the average shelf-life is increased by at least about 1.1-fold compared to the reference perishable item.

73 . The product of claim 58 , wherein the coating comprises a first crystallinity degree which is higher than a second crystallinity degree, the first crystallinity degree having been produced by a treatment process to the coating after at least a portion of the coating was in contact with the packaging item; and the second crystallinity degree being a crystallinity degree of the coating prior to the treatment process.

74 . A product comprising a perishable item and a coating, wherein at least a portion of the coating is in contact with at least a portion of the perishable item;
wherein the coating comprises an amphiphilic polypeptide; wherein the perishable item has an average shelf-life; and wherein the average shelf-life of the perishable item is extended compared to a reference perishable item that is not coated.

75 . The product of claim 74 , wherein the coating has a water diffusivity of less than 10 − 6 cm 2 /s.

76 . The product of claim 74 , wherein the coating provides an oxygen permeability coefficient (Dk O2 ) of less than 10 −10 [(ml O2 •cm)/(cm•s•mmHg)].

77 . The product of claim 74 , wherein the coating comprises a first crystallinity degree which is higher than a second crystallinity degree, the first crystallinity degree having been produced by a treatment process applied to the coating after at least a portion of the coating was in contact with the packaging item; and the second crystallinity degree being a crystallinity degree of the coating prior to the treatment process.

Assignees

• Univ Tufts

Inventors

• Omenetto Fiorenzo
• Kaplan David
• Marelli Benedetto
• Brenckle Mark

Classifications

• A23B2/762

  Organic compounds containing nitrogen · CPC title

• A23B2/729

  Organic compounds; Microorganisms; Enzymes · CPC title

• A23B7/154

  Organic compounds; Microorganisms; Enzymes · CPC title

• A01N3/00

  Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves {or protection against physical influences such as UV radiation using chemical compositions} (preservation or chemical ripening of fruit or vegetables A23B7/00); Grafting wax · CPC title

• A23B7/16 Primary

  Coating with a protective layer; Compositions or apparatus therefor (A23B7/08 takes precedence) · CPC title