Synergic composition for keeping fish and seafood fresh

Patent metadata

Field	Value
Publication number	US-11523626-B2
Application number	US-201817046613-A
Country	US
Kind code	B2
Filing date	Apr 13, 2018
Priority date	Apr 13, 2018
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

The present invention is a composition that can form an edible film or an edible liquid coating that can be applied to the surface of fresh fish (fillets or cuts) or fresh seafood. The present invention acts as a physical barrier preventing oxygen, water and microorganisms from entering the food product, and also acts as a bacteriostatic and antioxidant agent.

First claim

The invention claimed is:

1. A composition that can form an edible film or an edible liquid coating that can be applied to the surface of fresh fish (fillets or cuts) or fresh seafood, comprising:
a. a film-forming solution, comprising chitosan, gelatin, a surfactant, and, optionally, a plasticizer; and
b. at least one active agent, comprising carvacrol and, optionally, thyme essential oil; oregano essential oil; rosemary essential oil; thymol; cinnamaldehyde; cineol; and/or eugenol;

wherein the thyme essential oil, oregano essential oil, rosemary essential oil, thymol, cinnamaldehyde, cineol, and/or eugenol, if present, is present as free active agents and/or particles of encapsulated active agents,
wherein the carvacrol is present as free active agents and as particles of encapsulated active agents.

2. The composition according to claim 1 , wherein the particles of encapsulated active agents have an average size from 350 μm to 450 μm.

3. The composition according to claim 1 , wherein the chitosan is present in a concentration from 1.0% w/w to 3.0% w/w.

4. The composition according to claim 1 , wherein the gelatin is present in a concentration from 1.5% w/w to 3.5% w/w.

5. The composition according to claim 1 , wherein the at least one active agent is present in a concentration from 0.12% w/w to 1.5% w/w.

6. The composition according to claim 5 , wherein the at least one active agent comprises the carvacrol and the thyme essential oil and the at least one active agent is present in a concentration from 0.12% w/w to 1.0% w/w.

7. The composition according to claim 5 , wherein the at least one active agent is present in a concentration from 0.12% w/w to 1.0% w/w.

8. The composition according to claim 2 , wherein the encapsulated active agents are present in a concentration from 0.25% w/w to 1.0% w/w.

9. The composition according to claim 8 , wherein the encapsulated active agents are carvacrol and are present in a concentration from 0.25% w/w to 1.0% w/w.

10. The composition according to claim 1 , wherein the encapsulated active agents are encapsulated using ionic gelling.

11. The composition according to claim 1 , wherein the encapsulated active agents are encapsulated using physical, physico-chemical, or chemical techniques.

12. The composition according to claim 1 , wherein the film-forming solution comprises 1-5% w/w of the chitosan and 1-5% w/w of the gelatin.

13. The composition according to claim 12 , wherein the film-forming solution further comprises the plasticizer.

14. The composition according to claim 13 , wherein the plasticizer comprises 1-5% w/w sorbitol or 1-5% w/w glycerol.

15. The composition according to claim 1 , wherein the film-forming solution comprises 0.01-0.1% w/w of the surfactant.

Assignees

• Univ Pontificia Catolica Chile
• Fundacion Copec Univ Catolica

Inventors

• Valenzuela Roediger Loreto Margarita
• Cuevas Valenzuela Jose Oscar
• Franco Melazzani Wendy Veronica
• Perez Correa Jose Ricardo

Classifications

• A23B4/10

  Coating with a protective layer; Compositions or apparatus therefor · CPC title

• A01N31/08

  Oxygen or sulfur directly attached to an aromatic ring system · CPC title

• A01N65/22

  Lamiaceae or Labiatae [Mint family], e.g. thyme, rosemary, skullcap, selfheal, lavender, perilla, pennyroyal, peppermint or spearmint · CPC title

• C08L5/08

  Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof · CPC title

• C08L89/06

  derived from leather or skin {, e.g. gelatin} · CPC title