Bioplastic Matrices for Sustainable Agricultural and Horticultural Applications

Jiménez‐Rosado, Mercedes; Perez‐Puyana, Víctor; Guerrero, Antonio; Romero, Alberto

doi:10.1007/978-981-16-1823-9_16

Cited by 6 publications

(3 citation statements)

References 106 publications

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“…In the present study, nanostructured chitosan may act to control the Zn release and improve their assimilation by plants (Jimenez-Rosado et al, 2022). Moreover, chitosan has been reported to significantly enhance the seedling growth of several plants, including wheat (Triticum aestivum L.) (Wang et al, 2015), rice (Oryza sativa L.) (Chamnanmanoontham et al, 2015;Divya et al, 2022), and maize (Zea mays L.) (Agbodjato et al, 2016).…”

Section: Resultsmentioning

confidence: 83%

Zn nutrients-loaded chitosan nanocomposites and their efficacy as nanopriming agents for maize (Zea mays) seeds

Zungu,

Kamdem Paumo,

Gaorongwe

et al. 2023

Front. Chem.

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Recent breakthroughs in agro-inputs research have led to the development of nanomaterials that can promote precision agriculture and better environmental security. The agricultural sector is increasingly facing the negative impacts of changing climates due to various stress conditions. To curb this scenario, economical and low-risk practices such as decreasing fertilizer inputs and seed priming have been promoted. In the current study, the H. odoratissimum aqueous extract was used to nucleate the Zn ionic species and grow the zinc oxide nanoparticles (ZnO NPs). The developed nanocomposites and their ionic zinc precursor were then integrated into tripolyphosphate (TPP)-crosslinked chitosan (CS/TPP) nanostructures by ionic gelation. Advanced physicochemical characterization techniques (SEM, EDS, TEM, DLS, FTIR, TGA, and XPS) were exploited to report the morphology, hydrodynamic size, surface charge, and structural organization of the developed nanomaterials. These revealed positively charged particles with hydrodynamic size in the 149–257 nm range. The NPs were used as priming agents for Zea mays seeds. At 0.04%, the ZnO-loaded CS/TPP NPs achieved higher root and shoot elongation in 10-day old seedlings compared to other treatments. The pristine CS/TPP NPs, Zn(II)-laden CS/TPP NPs, and ZnO-loaded CS/TPP NPs at 0.01% significantly promoted the early seedling development of seeds under salt stress. This represents the first report showing ZnO integrated chitosan nanocomposites as an auspicious nanopriming agent for stimulating the seed germination of maize. The study envisages offering perspectives on utilizing green nanotechnology to improve the early seedling development of maize. Furthermore, it has the potential to contribute towards UN SDG 2, thus addressing the threats to global food insecurity and doubling agricultural productivity by 2030.

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Section: Resultsmentioning

confidence: 83%

Zn nutrients-loaded chitosan nanocomposites and their efficacy as nanopriming agents for maize (Zea mays) seeds

Zungu,

Kamdem Paumo,

Gaorongwe

et al. 2023

Front. Chem.

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“…The degradation process was also evaluated by studying the liquid being lixiviated from the samples, imitating regular irrigation conditions in agriculture . Briefly, 200 mg of the WG filaments after extrusion (extrusion stage, Figure ) and WG/CF composites (injection molding stage, Figure ) were buried in the soil used for the biodegradation above.…”

Section: Methodsmentioning

confidence: 99%

Biodegradable Fiber-Reinforced Gluten Biocomposites for Replacement of Fossil-Based Plastics

Capezza,

Bettelli,

Wei

et al. 2023

ACS Omega

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Biocomposites based on wheat gluten and reinforced with carbon fibers were produced in line with the strive to replace fossil-based plastics with microplastic-free alternatives with competing mechanical properties. The materials were first extruded/compounded and then successfully injection molded, making the setup adequate for the current industrial processing of composite plastics. Furthermore, the materials were manufactured at very low extrusion and injection temperatures (70 and 140 °C, respectively), saving energy compared to the compounding of commodity plastics. The sole addition of 10 vol % fibers increased yield strength and stiffness by a factor of 2−4 with good adhesion to the protein. The biocomposites were also shown to be biodegradable, lixiviating into innocuous molecules for nature, which is the next step in the development of sustainable bioplastics. The results show that an industrial protein coproduct reinforced with strong fibers can be processed using common plastic processing techniques. The enhanced mechanical performance of the reinforced protein-based matrix herein also contributes to research addressing the production of safe materials with properties matching those of traditional fossil-based plastics.

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“…In particular, the use of BP films covers various agricultural applications such as mulching, seed coating, and soil stabilization [ 10 , 11 , 12 ]. For instance, mulching films offer potential benefits such as an improved soil moisture retention and structure, and weed control, by contributing to enhanced crop yield but, most importantly, BP mulching films also limit the environmental impact, by reducing plastic waste and promoting sustainable farming practices [ 13 , 14 , 15 , 16 ]. However, there is growing concern about the possible negative environmental implications of the increasing use of bioplastics, as they appear to behave similarly to conventional fossil-based plastics.…”

Section: Introductionmentioning

confidence: 99%

Dose-Dependent Effects of a Corn Starch-Based Bioplastic on Basil (Ocimum basilicum L.): Implications for Growth, Biochemical Parameters, and Nutrient Content

Azarnejad,

Celletti,

Ghorbani

et al. 2024

Toxics

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Plastic pollution is a pressing global issue, prompting the exploration of sustainable alternatives such as bioplastics (BPs). In agriculture, BPs have gained relevance as mulching films. This study investigated the effect of the presence in the soil of different concentrations (0–3%, w/w) of a corn starch-based bioplastic on basil (Ocimum basilicum L.). The results showed that increasing bioplastic concentration reduced shoot fresh biomass production. Biochemical analyses revealed changes in the shoot in soluble protein content, biomarkers of oxidative and osmotic stress (malondialdehyde and proline, respectively), anti-radical activity, and antioxidant compounds (phenols, flavonoids, and ascorbic acid), which are indicative of plant adaptive mechanisms in response to stress caused by the presence of the different concentrations of bioplastic in the soil. Macro- and micronutrient analysis showed imbalances in nutrient uptake, with a decreased content of potassium, phosphorus, and manganese, and an increased content of magnesium, iron, and copper in the shoot at high BP concentrations.

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Bioplastic Matrices for Sustainable Agricultural and Horticultural Applications

Cited by 6 publications

References 106 publications

Zn nutrients-loaded chitosan nanocomposites and their efficacy as nanopriming agents for maize (Zea mays) seeds

Zn nutrients-loaded chitosan nanocomposites and their efficacy as nanopriming agents for maize (Zea mays) seeds

Biodegradable Fiber-Reinforced Gluten Biocomposites for Replacement of Fossil-Based Plastics

Dose-Dependent Effects of a Corn Starch-Based Bioplastic on Basil (Ocimum basilicum L.): Implications for Growth, Biochemical Parameters, and Nutrient Content

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