Environmental impact of biodegradable food packaging when considering food waste

Dilkes-Hoffman, Leela; Lane, Joe; Grant, Tim; Pratt, Steven; Lant, Paul; Laycock, Bronwyn

doi:10.1016/j.jclepro.2018.01.169

Cited by 186 publications

(105 citation statements)

References 32 publications

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“…However, after the use of the packaging, there is the problem of disposal of this product, which could generate waste and cause damage to the environment. Most packages are made of polymeric materials, due to its properties, low density, the versatility of use, and low cost …”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of antistatic packaging for electronic components based on poly(lactic acid)/carbon black composites

Silva

Menezes

Montagna

et al. 2018

J of Applied Polymer Sci

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Poly(lactic acid) (PLA) is a biodegradable aliphatic polymer obtained from renewable sources; its main application is in the packaging sector. Electronic components require the use of antistatic packaging that prevents damage and electric shock. As PLA has no conductive characteristics, it requires the addition of allotropic carbon forms such as conductive carbon black to make the polymer less resistive as the dissipative material and making it suitable for the manufacture of antistatic packaging. In this study, PLA was melt blended with 5, 10, and 15 wt % of carbon black. The composites were prepared using a high‐speed mixer. Samples were characterized by Izod impact resistance tests, scanning electron microscopy, thermal properties, electrical characterization, and biodegradation tests in garden soil. The addition of carbon black in the PLA matrix increases the temperature of degradation and decreases the crystallinity degree and the impact resistance of the composites. However, carbon black is a great option to increase the electrical conductivity of PLA. The addition of carbon black in PLA makes the composite less resistive and suitable for use as antistatic packaging for the transportation and storage of electronic components. Furthermore, this composite does not cause damage to the environment as the carbon black does not interfere in the degradation mechanism of PLA. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47273.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of antistatic packaging for electronic components based on poly(lactic acid)/carbon black composites

Silva

Menezes

Montagna

et al. 2018

J of Applied Polymer Sci

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“…There are currently several branches of research within the packaging field which explore possible pathways to improve environmental performance. The evaluation of biodegradable materials, the development of nonfossil‐based materials, and the barrier performance improvements are all examples of such topics . However, the potential impact of any innovations to improve environmental performance can be reduced or even negated when products are overpacked.…”

Section: Introductionmentioning

confidence: 99%

“…The evaluation of biodegradable materials, the development of nonfossil-based materials, and the barrier performance improvements are all examples of such topics. [2][3][4][5][6] However, the potential impact of any innovations to improve environmental performance can be reduced or even negated when products are overpacked.…”

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confidence: 99%

Shelf life prediction of oxygen‐sensitive products: The influence of moisture on prediction accuracy for freeze‐dried coffee

et al. 2019

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Optimised packaging requires that properties are matched to the protection requirements of food for its shelf life duration. Benefits include reduced packaging costs, use volumes, and potentially improved environmental performance. The ability to predict product shelf life in different materials can assist in selecting optimal packaging. However, the availability of such tools is limited, and risk for over packing exists. The aim with this work is to develop a prediction approach which can be applied to assist users to select more optimal packaging materials. Soluble coffee was used to develop the approach, where oxygen consumption of the product is used as a quality indicator. The effect of moisture content on O2 consumption was studied to determine its influence on prediction accuracy. Samples were prepared with different levels of moisture content. O2 consumption rates were measured, and a notable influence of moisture was observed. A model was developed to predict the O2 consumption of the product when packed in a pouch. The model considers oxygen and moisture permeation properties of the packaging film, O2 and moisture differential between the interior and exterior of the packaging, and the evolution of the O2 consumption rate as a function of moisture increase. To test model accuracy, coffee samples were packed in flexible pouches, and O2 consumption was measured which showed that predicted and measured values shared the same trend characteristics. We show that considering both moisture and O2 ingress simultaneously leads to more precise shelf life prediction as oxidation rate is influenced by moisture content.

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“…Biological treatment of biodegradable waste is preferred globally due to its low operation cost and low maintenance and use of minimal hazardous chemicals (de Anda, López‐López, Villegas‐García, & Valdivia‐Aviña, ; Casiano Flores, Bressers, Gutierrez, & de Boer, ). Methanogenesis is a prominent popular technology worldwide, which involves degradation of biological waste through undefined microflora to produce methane and carbon dioxide (Angenent, Karim, Al‐Dahhan, Wrenn, & Domíguez‐Espinosa, ; Dilkes‐Hoffman et al., ).…”

Section: Introductionmentioning

confidence: 99%

Low pH treatment of starch industry effluent with bacteria from leaf debris for methane production

Chaterjee

Neogi

Saha

et al. 2019

Water Environment Research

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Cornstarch industry generates a huge amount of acidic effluent, that is, 5–11 M3/Mt grinding, with a high load of chemical oxygen demand, 6000–19000 mg/L. The acidic effluent requires neutralization making the treatment process expensive. Methanogenesis under the acidic environment (pH 5–5.5) can reduce the cost of operation as well as treatment time. This research focuses on the evaluation of the optimum condition of COD reduction and methane generation simultaneously from leaf debris sludge using Box–Behnken model. Three 1 L bioreactors were seeded with 5000–10000 mg/L inoculum and operated at different pH 4.0–7.0 for 72 hr up to 10 cycles. The production of methane was found maximum 2980 ml after treating the wastewater from the starch industry at pH 5.57 and 9612.9 mg biomass load at 62.4 hr. The high reduction rate of around 97% shows there is ample opportunity for further research on low pH treatment of waste along with recovery as methane. Practitioner points The low pH tolerant methanogenic bacteria are promising and are isolable from various natural resources. The low pH tolerant methanogens was able to remove 97% COD from starch industry effluent at pH 5.57. The recovery of methane was 2980 ml from 9612 mg/L COD which is at per with present treatment system thus provides cost effective alternatives.

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Environmental impact of biodegradable food packaging when considering food waste

Cited by 186 publications

References 32 publications

Preparation and characterization of antistatic packaging for electronic components based on poly(lactic acid)/carbon black composites

Preparation and characterization of antistatic packaging for electronic components based on poly(lactic acid)/carbon black composites

Shelf life prediction of oxygen‐sensitive products: The influence of moisture on prediction accuracy for freeze‐dried coffee

Low pH treatment of starch industry effluent with bacteria from leaf debris for methane production

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