Advances in Food Packaging - Bioeconomía Argentina€¦ · Packaging and environment “The goal...
Transcript of Advances in Food Packaging - Bioeconomía Argentina€¦ · Packaging and environment “The goal...
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Advances in Food Packaging
Prof. Paulo José do Amaral Sobral
Departamento de Engenharia de Alimentos
FZEA – USP, Campus de Pirassununga
São Paulo - Brazil
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Bioeconomy
From: Vivekanandhan et al. (2013)
Bioeconomy plans
include a bio-based
industries sector in
which some oil-derived
plastics and chemicals
are replaced by new or
equivalent products
derived, at least
partially, from biomass
(Philp et al., 2013).
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Packaging and environment
“The goal of food packaging is to contain food in a
cost-effective way that satisfies industry
requirements and consumer desires, maintains
food safety, and minimizes environmental
impact”(Marsh & Bugusu, 2007).
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Packaging Materials
Materials used for packaging in the
world (Kim et al., 2013)
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Bioplastics
From: Iles and Martin (2013)
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Biopolymers in Food Packaging
Biopolymers are macromolecules from biological
origin:
i) Proteins: gelatin, soy protein, gluten, zein,
whey proteins isolate,…;
ii) Polysaccharides: starch, cellulose, chitosan,
gums,…
Used to produce a continuum matrix or to
produce nanoparticles to be used as load.
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Films produced
by casting
Cassava starch
Chitosan
Protein from Tilapia fillet
gelatin
gelatin + PVA
E*=8.5;
a*= -1.6;
b*=8.9;
L*=97
From: Paschoalick et al. (2003)
E*=3;
a*= -1;
b*=2.8;
L*=91
From: Sobral et al. (2001)
E*=3.2;
a*= -1;
b*=2.6;
L*=92 From: Maria et al. (2008)
E*=7.9
From: Alvarado et al. (2007)
E*=3.2;
a*= -0.8;
b*=2;
L*=97
From: Vicentini
et al. (2005)
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Films based on gelatin with
hydrophobic plasticizers
Tributyil citrate
(Citroflex 4)
MW= 360.4
Acetyl tributyl citrate
(Citroflex A4)
MW= 402.5
C18H32O7
C20H34O8
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Film produced by
extrusion
Cassava starch and PE.
From Prof. Dr. Fábio Yamashita, UEL, Brazil.
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Gelatin based films colored with lycopene
X= 0.400 mm
X= 0.080 mm
Red
light Green
light
Violet
light
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From: Lu et al. (2006).
Starch based films
charged with
nanocrystals produced
from ramie cellulose.
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From: Lu et al. (2004).
WQ
5%
30%
Soy protein isolate
based films charged
with whiskers from
chitin.
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From: Tunc et al. (2007).
Gluten based films charged with Montmorillonite.
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Active Packaging
- They contain deliberately incorporated components intended
to release (controlled) or absorb substances into or from the
packaged food or from the environment surrounding the food
(Dainelli et al., 2008).
From: Restuccia et al. (2010).
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Antimicrobial activity
Antimicrobial packaging can take several forms
including (Appendini and Hotchkiss, 2002):
- Addition of sachets containing volatile antimicrobial agents
into packages.
- Incorporation of volatile/non-volatile antimicrobial agents
directly into polymers.
- Coating or adsorbing antimicrobials onto polymer surfaces.
- Immobilization of antimicrobials to polymers by ion or covalent linkages.
- Use of polymers that are inherently antimicrobial.
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Examples of Antimicrobial Packaging
From: Appendini and Hotchkiss (2002)
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Antimicrobial Agents for Food Application
From: Appendini and Hotchkiss (2002)
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Films based on cassava starch with nisin: N: # CFU (L. innocua);
x: control; ♦: 881 IU /cm2; ■: 1322 IU/cm2; ▲ : 2204 IU/cm2.
From: Sanjurjo et al. (2006)
Example of an edible film with Nisin: release
controlled by diffusion
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Antimicrobial activity on command
This system only releases its preservative on command: the preservative
will be released from the packaging material if bacterial growth occurs
(De Jong et al., 2005).
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Films based on gelatin with aqueous extract from
leaves of “murta”: «Soloyo Grande, SG; Soloyo Chico, SC».
From: Gomez-Guillen et al. (2007).
Antioxidant activity
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Absorbers...
From: Vermeiren et al. (1999).
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Processing Packaging
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Intelligent Packaging
Defined as materials and articles that monitor the
condition of packaged food or the environment
surrounding the food (Dainelli et al., 2008).
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Smart package devices
Barcodes.
Radio frequency identification tags: passive tags that have no
battery, and active tags that have their own battery for
powering the microchip’s circuitry and broadcasting signals to
the reader.
Time-temperature indicators: critical temperature indicators,
partial history indicators, and full history indicators.
Gas indicators: usually by change of color of the device.
Biosensors: consists of a bioreceptor that recognizes a target analyte and a transducer that converts biochemical signals
into a quantifiable electrical response.
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From: http://www.interempresas.net/Packaging/Articles/
47806-Intelligent-packaging-with-built-in-freshness-detector.html.
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Final Remarks
From: Restuccia et al. (2010).
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The Future
Increasing of use of biodegradable material in food
packaging.
More researches are needed about the chemical,
microbiological and physiological effects of various
active agents.
Discuss specific regulations on the use of active and
intelligent packaging.