Bioplastics from agro-wastes for food packaging applications

Moura, I.; Sá, Arsénio Vasconcelos; Abreu, Ana S.; Machado, A. V.

doi:10.1016/b978-0-12-804302-8.00007-8

Cited by 45 publications

(24 citation statements)

References 154 publications

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“…Additionally, starch and gelatin were utilized as the polymeric materials and natural fillers such as sugarcane bagasse (SCB), apple peels (AP), corn fibers (CF), wheat flour (WF), wheat straw (WS), and orange peels (OP) used. Similar to previous studies [69,70], the researchers also observed that the integration of agro-waste in the production of bio-based polymeric materials and fillers enhanced their morphological and mechanical properties and also resulted in biodegradable end products that could not affect the environment adversely.…”

Section: Bio-based Plasticssupporting

confidence: 80%

“…To that end, they proposed to integrate starch in the manufacture of bioplastics in order to further enhance properties such as the hardness, impact strength, and biodegradability. In a separate study, Gonçalves de Moura et al [70] employed green chemistry methodology to extract natural polymers such as cellulose from vegetable wastes. As a result, the researchers were able to prepare new functional polymers for packaging based on the extracted cellulose, which had demonstrated solid thermomechanical properties and biodegradability.…”

Section: Bio-based Plasticsmentioning

confidence: 99%

“…As a result, the researchers were able to prepare new functional polymers for packaging based on the extracted cellulose, which had demonstrated solid thermomechanical properties and biodegradability. The implication of the research was its revelation of the potential of agro-waste in the production of new cellulose-based plastics for applications in food packaging [70]. Analysis of the three studies [69][70][71] reveals that the utilization of agro-waste in the manufacture of bio-based plastics not only enhances their inherent mechanical properties, such as impact strength but also improves their biodegradability, thereby alleviating the adverse environmental pollution challenge.…”

Section: Bio-based Plasticsmentioning

confidence: 99%

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Production of Sustainable Construction Materials Using Agro-Wastes

Maraveas

2020

Materials

151

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The construction sector, in modern times, is faced by a myriad of challenges primarily due to the increase in the urban population and dwindling natural resources that facilitate the production of construction materials. Furthermore, higher awareness on climate change is forcing companies to rethink their strategies in developing more sustainable construction materials. Diverse types of agro-waste ranging from rice husk ash (RHA), sugarcane bagasse ash (SCBA), and bamboo leaves ash (BLA) among others have been identified as potent solutions in the development of sustainable construction materials. In this review paper, six different construction materials, made using agro-waste products, are examined. The materials include brick/masonry elements, green concrete, insulation materials for buildings, reinforcement materials for buildings, particleboards, and bio-based plastics. The main criterion adopted in selecting the materials regards their popularity and wide-scale use in modern construction applications. Additionally, as this research emphasizes identifying alternative approaches to develop sustainable construction materials, the focus is directed toward mainstream materials whose continued use has an adverse impact on the environment. The findings obtained from the review showed that the use of agro-waste to develop sustainable construction materials was effective, as the developed materials adhered to established building standards. Therefore, this indicates that agro-waste materials have the potential to replace conventional construction materials and hence achieve economic, environmental, and social sustainability in the long run.

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Section: Bio-based Plasticssupporting

confidence: 80%

Section: Bio-based Plasticsmentioning

confidence: 99%

Section: Bio-based Plasticsmentioning

confidence: 99%

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Production of Sustainable Construction Materials Using Agro-Wastes

Maraveas

2020

Materials

151

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“…[96] It is important to replace nondegradable plastic with biodegradable plastic in various applications due to environmental awareness. [97] As shown in Figure 4, PLA is used in packaging, transportation, agriculture, biomedical, textile and electronics industries, with the first being most important, especially for food. [72,82] Packaging has been the most important due to the growing awareness of environmental problems associated with use of nondegradable plastic packaging materials such as polyethylene, polypropylene, ethylene vinyl acetate, PET and PS.…”

Section: Application Of Plamentioning

confidence: 99%

A review on degradation mechanisms of polylactic acid: Hydrolytic, photodegradative, microbial, and enzymatic degradation

Zaaba

Jaafar

2020

Polymer Engineering & Sci

418

247

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Recently, thoughtful disagreements between scientists concerning environmental issues including the use of renewable materials have enhanced universal awareness of the use of biodegradable materials. Polylactic acid (PLA) is one of the most promising biodegradable materials for commercially replacing nondegradable materials such as polyethylene terephthalate and polystyrene. The main advantages of PLA production over the conventional plastic materials is PLA can be produced from renewable resources such as corn or other carbohydrate sources. Besides, PLA provides adequate energy saving by consuming CO2 during production. Thus, we aim to highlight recent research involving the investigation of properties of PLA, its applications and the four types of potential PLA degradation mechanisms. In the first part of the article, a brief discussion of the problems surrounding use of conventional plastic is provided and examples of biodegradable polymers currently used are provided. Next, properties of PLA, and (Poly[L‐lactide]), (Poly[D‐lactide]) (PDLA) and (Poly[DL‐lactide]) and application of PLA in various industries such as in packaging, transportation, agriculture and the biomedical, textile and electronic industry are described. Behaviors of PLA subjected to hydrolytic, photodegradative, microbial and enzymatic degradation mechanisms are discussed in detail in the latter portion of the article.

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“…For many years, these synthetic materials have been used in a variety of applications in everyday life, such as in food and beverage packaging, automotive, healthcare, electronics, and communication industries (Goncalves et al, 2017). Plastics became indispensable due to their versatility, aesthetic qualities and low cost.…”

Section: Introductionmentioning

confidence: 99%

Obtaining and characterization films of a bioplastic obtained from passion fruit waste (Passiflora edulis)

Henao-Díaz

Cadena-Casanova

López

et al. 2021

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Objective: Obtaining films from a vegetable biopolymer from the peel (a by-product) of passion fruit (Passiflora edulis) (BPM) and contribute to reduce the environmental pollution generated by the consumption of petroleum-derived plastics.Design / methodology / approach: By acid hydrolysis at four concentrations of citric acid (0, 1, 2, and 3 %), pectin was extracted of passion fruit peels, making a paste mixture with glycerol. The obtained biofilms with an approximate 1 mm thickness wereNcharacterized by transformed Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) with coupled elemental analyzer (EDS).Results: XRD diffractograms revealed that passion fruit bioplastic had a semi-crystalline structure and a calculated crystallinity index of 74.6 %. Its value reduced by the half as the citric acid increased concentration, the samples with lower concentration with greater flexibility (1 %). FTIR analysis suggested alterations in the BMP structures and adecrease of methoxyl groups in the polymeric chains with the increasing in citric acid content. Limitations/implications: SEM micrographs showed homogeneity in the films, although with some granular irregularities and folding.Findings/conclusions: The increase in citric acid concentration decreased the degree of gelation in the writing of the obtained biofilms, suggested by EDS and FTIR results, with a consequent reduced flexibility of the GMP films.

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Bioplastics from agro-wastes for food packaging applications

Cited by 45 publications

References 154 publications

Production of Sustainable Construction Materials Using Agro-Wastes

Production of Sustainable Construction Materials Using Agro-Wastes

A review on degradation mechanisms of polylactic acid: Hydrolytic, photodegradative, microbial, and enzymatic degradation

Obtaining and characterization films of a bioplastic obtained from passion fruit waste (Passiflora edulis)

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