Innovations in applications and prospects of bioplastics and biopolymers: a review

Nanda, Sonil; Patra, Biswa R.; Patel, Ravi Kumar; Bakos, J. Yannis; Dalai, Ajay K.

doi:10.1007/s10311-021-01334-4

Cited by 240 publications

(134 citation statements)

References 120 publications

(135 reference statements)

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“…Importantly, the only way that really makes a difference is to stop protective equipment related plastic pollution from the source, suggesting that the production should be decoupled from fossil fuel-based resources. Biobased plastics as potential alternative sustainable materials are emerging, which can shift the dependency from fossil fuels to bioproducts (Nanda et al 2022). Biobased plastics are made from polymers derived from biological sources, including higher plants, microalgae, and cyanobacteria (Karan et al 2019).…”

Section: Improving Plastic Productionmentioning

confidence: 99%

Impact of waste of COVID-19 protective equipment on the environment, animals and human health: a review

et al. 2022

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During the Corona Virus Disease 2019 (COVID-19) pandemic, protective equipment, such as masks, gloves and shields, has become mandatory to prevent person-to-person transmission of coronavirus. However, the excessive use and abandoned protective equipment is aggravating the world's growing plastic problem. Moreover, above protective equipment can eventually break down into microplastics and enter the environment. Here we review the threat of protective equipment associated plastic and microplastic wastes to environments, animals and human health, and reveal the protective equipment associated microplastic cycle. The major points are the following:1) COVID-19 protective equipment is the emerging source of plastic and microplastic wastes in the environment. 2) protective equipment associated plastic and microplastic wastes are polluting aquatic, terrestrial, and atmospheric environments. 3) Discarded protective equipment can harm animals by entrapment, entanglement and ingestion, and derived microplastics can also cause adverse implications on animals and human health. 4) We also provide several recommendations and future research priority for the sustainable environment. Therefore, much importance should be attached to potential protective equipment associated plastic and microplastic pollution to protect the environment, animals and humans.

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Section: Improving Plastic Productionmentioning

confidence: 99%

Impact of waste of COVID-19 protective equipment on the environment, animals and human health: a review

et al. 2022

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“…Natural biopolymers have attracted extensive interest owing to their environmental friendship. As a result of increasing environmental concerns, bioproduction of polymers using microorganisms has been especially developed [ 1 , 2 ]. Poly-γ-glutamic acid (γ-PGA) is a natural biopolymer composed of glutamic acid monomers with γ -amide linkage [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…γ-PGA and poly-ε-lysine (ε-PL) are two biopolymers that could be synthesized by microorganisms [ 4 ]. γ-PGA is water soluble, biodegradable, edible, and environmentally friendly, and it has various applications in medicine, foods, plastics, water treatment, and agriculture [ 2 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Efficient molasses utilization for low-molecular-weight poly-γ-glutamic acid production using a novel Bacillus subtilis strain

Chen

et al. 2022

Microb Cell Fact

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Background Poly-γ-glutamic acid (γ-PGA) is a biopolymer and has various applications based on its biocompatibility, non-toxicity, and edibility. Low-molecular-weight (Mw)-γ-PGA has promising applications in agriculture and pharmaceuticals. It is traditionally produced by enzymatic hydrolysis. Cost-effective bioproduction of low-Mw-γ-PGA is essential for commercial application of γ-PGA. Results Bacillus subtilis 242 is a newly isolated low-Mw-γ-PGA-producing strain. To develop cost-effective production of γ-PGA using this newly isolated strain, cane molasses and corn steep liquor were used to produce γ-PGA. The concentration of cane molasses was optimized and 100 g/L cane molasses resulted in high γ-PGA production. The effects of yeast extract and corn steep liquor on γ-PGA yield were investigated. High concentration of γ-PGA was obtained in the medium with corn steep liquor. A concentration of 32.14 g/L γ-PGA was achieved in fed-batch fermentation, with a productivity of 0.67 g/L/h and a percentage yield (gγ-PGA/gglutamate) of 106.39%. The Mw of γ-PGA was 27.99 kDa. Conclusion This study demonstrated the potential application of B. subtilis 242 for cost-effective production of low-Mw-γ-PGA from cane molasses.

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“…There are many works associated with TPS, such as the study of starch-based films [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ], the production of innovative biodegradable products [ 29 ], the additives used to strengthen TPS [ 30 ], water or azodicarbonamide used as foaming agents to develop starch-based foams [ 18 , 26 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ], and evaluating the performance of starch loose-fill foams and expanded polystyrene [ 39 ]. Foam products are often used in packing goods, which can easily become plastic garbage.…”

Section: Introductionmentioning

confidence: 99%

Thermoplastic Starch with Poly(butylene adipate-co-terephthalate) Blends Foamed by Supercritical Carbon Dioxide

et al. 2022

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Starch-based biodegradable foams with a high starch content are developed using industrial starch as the base material and supercritical CO2 as blowing or foaming agents. The superior cushioning properties of these foams can lead to competitiveness in the market. Despite this, a weak melting strength property of starch is not sufficient to hold the foaming agents within it. Due to the rapid diffusion of foaming gas into the environment, it is difficult for starch to maintain pore structure in starch foams. Therefore, producing starch foam by using supercritical CO2 foaming gas faces severe challenges. To overcome this, we have synthesized thermoplastic starch (TPS) by dispersing starch into water or glycerin. Consecutively, the TPS surface was modified by compatibilizer silane A (SA) to improve the dispersion with poly(butylene adipate-co-terephthalate) (PBAT) to become (TPS with SA)/PBAT composite foam. Furthermore, the foam-forming process was optimized by varying the ratios of TPS and PBAT under different forming temperatures of 85 °C to 105 °C, and two different pressures, 17 Mpa and 23 Mpa were studied in detail. The obtained results indicate that the SA surface modification on TPS can influence the great compatibility with PBAT blended foams (foam density: 0.16 g/cm3); whereas unmodified TPS and PBAT (foam density: 0.349 g/cm3) exhibit high foam density, rigid foam structure, and poor tensile properties. In addition, we have found that the 80% TPS/20% PBAT foam can be achieved with good flexible properties. Because of this flexibility, lightweight and environment-friendly nature, we have the opportunity to resolve the strong demands from the packing market.

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Innovations in applications and prospects of bioplastics and biopolymers: a review

Cited by 240 publications

References 120 publications

Impact of waste of COVID-19 protective equipment on the environment, animals and human health: a review

Impact of waste of COVID-19 protective equipment on the environment, animals and human health: a review

Efficient molasses utilization for low-molecular-weight poly-γ-glutamic acid production using a novel Bacillus subtilis strain

Thermoplastic Starch with Poly(butylene adipate-co-terephthalate) Blends Foamed by Supercritical Carbon Dioxide

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