ABSORBENT PAD TO REDUCE CONFINEMENT ODOR IN FOOD PACKAGES
An absorbent pad that contains activated carbon to reduce confinement odor in a vacuum-packaged food product is provided. An embodiment of absorbent pad contains activated carbon and an antimicrobial agent that further reduces confinement odor by two mechanisms of action: reducing bacterial counts in the liquid purge that cause breakdown of carbohydrates and proteins in food products; and trapping of confinement odor-causing breakdown products by the activated carbon. The absorbent body in the absorbent pad actively draws in liquid purge and dissolved volatile breakdown products in the vacuum package that produce confinement odor, which produces greater and more rapid contact of odor-causing compounds with the activated carbon.
1 . An absorbent food pad for use in a vacuum-packed or shrink-wrapped product having food therein comprising:
a top layer;
a bottom layer; and
a laminate positioned between the top layer and the bottom layer,
wherein the laminate includes an active agent,
wherein the laminate reduces confinement odor in the vacuum-packed or shrink-wrapped product.
2 . The absorbent food pad of claim 1 , wherein the active agent is activated carbon.
3 . The absorbent food pad of claim 2 , wherein the activated carbon is in an amount from about 0.005 grams per square inch to about 0.02 grams per square inch.
4 . The absorbent food pad of claim 2 , wherein the activated carbon has a surface area ranging between 300 m 2 g and 5000 m 2 g.
5 . The absorbent food pad of claim 2 , wherein the absorbent food pad further includes an oxygen scavenger.
6 . The absorbent food pad of claim 5 , wherein the laminate includes the oxygen scavenger.
7 . The absorbent food pad of claim 6 , wherein the oxygen scavenger is glucose oxidase and/or catalase.
8 . The absorbent food pad of claim 2 , wherein the absorbent food pad further includes an antimicrobial agent.
9 . The absorbent food pad of claim 8 , wherein the laminate includes the antimicrobial agent.
10 . The absorbent food pad of claim 8 , wherein the antimicrobial agent is a mixture of citric acid and sorbic acid.
11 . The absorbent food pad of claim 10 , wherein the citric acid and sorbic acid are present at a ratio of 7 to 3.
12 . The absorbent food pad of claim 10 , wherein the antimicrobial agent is about 2.0 weight % based on nominal absorbency of the absorbent food pad.
13 . The absorbent food pad of claim 2 , wherein the absorbent food pad has a total absorbency from about 0.95 grams per square inch to about 6.5 grams per square inch.
14 . The absorbent food pad of claim 2 , wherein the laminate is made of two or more plies of a cellulosic material.
15 . The absorbent food pad of claim 14 , wherein the active agent is incorporated into the two or more plies of the laminate.
16 . The absorbent food pad of claim 2 , wherein the top layer is a film having a thickness of about 0.65 mil.
17 . An absorbent food pad for use in a vacuum-packed or shrink-wrapped product having food therein comprising:
a top layer;
a bottom layer; and
a laminate positioned between the top layer and the bottom layer,
wherein the laminate includes a plurality of active agents, the plurality of active agents comprising activated carbon, an antimicrobial agent, and an oxygen scavenger,
wherein the laminate reduces confinement odor in the vacuum-packed or shrink-wrapped product.
18 . The absorbent food pad of claim 17 , wherein the antimicrobial agent is a mixture of citric acid and sorbic acid.
19 . The absorbent food pad of claim 17 , wherein the oxygen scavenger is glucose oxidase and/or catalase.
20 . A system to reduce confinement odor in food packages, the system comprising:
a food package that is vacuum-packed or shrink-wrapped;
a food product positioned in the food package; and
an absorbent food pad positioned in the food package, the absorbent food pad having an architecture comprising:
a top layer;
a bottom layer; and
a laminate positioned between the top layer and the bottom layer, wherein the laminate includes a plurality of active agents that reduce confinement odor when the food package is opened, the plurality of active agents comprising activated carbon, an antimicrobial agent, and an oxygen scavenger, wherein the antimicrobial agent is a mixture of citric acid and sorbic acid, and wherein the oxygen scavenger is glucose oxidase and/or catalase.