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Choi I, Choi MH, Han J. Exploring the effect of corn starch/pea protein blending on the physicochemical and structural properties of biopolymer films and their aging resistance. Int J Biol Macromol 2024; 269:132092. [PMID: 38718993 DOI: 10.1016/j.ijbiomac.2024.132092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 04/19/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024]
Abstract
This study investigated the potential effect of blending corn starch and pea protein isolate in various ratios (100:0, 70:30, 50:50, 30:70, and 0:100) on the aging properties of biodegradable films. Unlike previous research, the focus was on the often-overlooked aspect of film aging. Fourier-transform infrared spectroscopy and X-ray diffraction demonstrated the physical blending of corn starch and pea protein, along with chemical bonding and conformational changes. The optical and microstructural properties showed the formation of smooth, homogeneous films with good compatibility between the polymers. The water resistance, barrier, and mechanical properties corresponding to the intrinsic nature of protein polymers showed a minimized fluctuations in film properties as film ages, with a reduction of at least twice when protein is added. Remarkably, the blend with a ratio of 30:70 demonstrated the most stable properties during aging. These results demonstrated that blending the pea protein isolate was favorable for delaying the retrogradation and recrystallization of corn starch films. Understanding how these blends influence the aging characteristics of films is not only a novel contribution to the scientific community but also holds practical significance, potentially opening a potential for applications in various industries.
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Affiliation(s)
- Inyoung Choi
- Department of Food Science and Technology, University of California-Davis, Davis, CA 95616, USA
| | - Min Hye Choi
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jaejoon Han
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea; Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
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2
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González K, Larraza I, Martin L, Eceiza A, Gabilondo N. Effective reinforcement of plasticized starch by the incorporation of graphene, graphene oxide and reduced graphene oxide. Int J Biol Macromol 2023; 249:126130. [PMID: 37541466 DOI: 10.1016/j.ijbiomac.2023.126130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/25/2023] [Accepted: 08/02/2023] [Indexed: 08/06/2023]
Abstract
Plasticized starch (PLS) nanocomposite films using glycerol and reinforced with graphene (G) and graphene oxide (GO) were prepared by solvent casting procedure. On one hand, the influence of adding different G contents into the PLS matrix was analyzed. In order to improve the stability of G nanoflakes in water, Salvia extracts were added as surfactants. The resulting nanocomposites presented improved mechanical properties. A maximum increase of 287 % in Young's modulus and 57 % in tensile strength was achieved for nanocomposites with 5 wt% of G. However, it seemed that Salvia acted as co-plasticizer for the PLS. Moreover, the addition of the highest G content led to an improvement of the electrical conductivity close to 5 × 10-6 S/m compared to the matrix. On the other hand, GO was also incorporated as nanofiller to prepare nanocomposites. Thus, the effect of increasing the GO content in the final behavior of the PLS nanocomposites was evaluated. The characterization of GO containing PLS nanocomposites showed that strong starch/GO interactions and a good dispersion of the nanofiller were achieved. Moreover, the acidic treatment applied for the reduction of the GO was found to be effective, since the electrical conductivity was 150 times bigger than its G containing counterpart.
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Affiliation(s)
- Kizkitza González
- Department of Chemical and Environmental Engineering, 'Materials+Technologies' Group, Engineering College of Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastian, Spain; Department of Graphical Expression and Project Management, Engineering College of Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastian, Spain
| | - Izaskun Larraza
- Department of Chemical and Environmental Engineering, 'Materials+Technologies' Group, Engineering College of Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastian, Spain
| | - Loli Martin
- Macrobehaviour-Mesostructure-Nanotechnology SGIker Service, Faculty of Engineering of Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, Donostia-San Sebastián 20018, Spain
| | - Arantxa Eceiza
- Department of Chemical and Environmental Engineering, 'Materials+Technologies' Group, Engineering College of Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastian, Spain
| | - Nagore Gabilondo
- Department of Chemical and Environmental Engineering, 'Materials+Technologies' Group, Engineering College of Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastian, Spain.
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3
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Chitosan-Gelatin Films: Plasticizers/Nanofillers Affect Chain Interactions and Material Properties in Different Ways. Polymers (Basel) 2022; 14:polym14183797. [PMID: 36145942 PMCID: PMC9505206 DOI: 10.3390/polym14183797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/02/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Biopolymers, which are biodegradable and inherently functional, have high potential for specialized applications (e.g., disposable and transient systems and biomedical treatment). For this, it is important to create composite materials with precisely defined chain interactions and tailored properties. This work shows that for a chitosan–gelatin material, both glycerol and isosorbide are effective plasticizers, but isosorbide could additionally disrupt the polyelectrolyte complexation (PEC) between the two biopolymers, which greatly impacts the glass transition temperature (Tg), mechanical properties, and water absorption. While glycerol-plasticized samples without nanofiller or with graphene oxide (GO) showed minimal water uptake, the addition of isosorbide and/or montmorillonite (MMT) made the materials hydrolytically unstable, likely due to disrupted PEC. However, these samples showed an opposite trend in surface hydrophilicity, which means surface chemistry is controlled differently from chain structure. This work highlights different mechanisms that control the different properties of dual-biopolymer systems and provides an updated definition of biopolymer plasticization, and thus could provide important knowledge for the future design of biopolymer composite materials with tailored surface hydrophilicity, overall hygroscopicity, and mechanical properties that meet specific application needs.
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4
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Oxygen Scavenger and Antioxidant LDPE/EVOH/PET-Based Films Containing β-Carotene Intended for Fried Peanuts (Arachis hypogaea L.) Packaging: Pilot Scale Processing and Validation Studies. Polymers (Basel) 2022; 14:polym14173550. [PMID: 36080624 PMCID: PMC9460629 DOI: 10.3390/polym14173550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/18/2022] [Accepted: 08/23/2022] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to develop an oxygen scavenger and antioxidant active packaging material for fried peanuts. The packaging solution, which has been made at the laboratory previously, has been developed by cast film extrusion and is composed of low-density polyethylene-ethylene vinyl alcohol-polyethylene terephthalate (LDPE/EVOH/PET)-based films containing β-carotene (CAR). In comparison with film without additive, developed film presented an orange colouring (higher L* and b* values and lower a* values) and an increase in oxygen induction time (OIt) from 4.5 to 14.1 min. The incorporation of β-carotene to the formulation also brings about a significant effect on the thermal stability as maximum degradation temperatures increased around 1%. Regarding the oxygen absorption capacity of the films, values of 1.39 ± 0.10 mL O2 per g of film at laboratory scale and 1.7 ± 0.3 mL O2 per g of multilayer (ML)/LDPE_CAR were obtained, respectively, after 3 days, proving the suitability of the packaging solutions as oxygen absorbers. To validate the packaging solution, the oxidative stability of fried peanuts packed in fabricated multilayer β-carotene bags was evaluated for 3 months at 40 °C. The hexanal content remained constant during this period. Meanwhile, peanuts packed in ML without β-carotene increased their hexanal content to 294%. This fact indicated a lower extent of oxidation in fried peanuts compared to food samples packaged in control films, suggesting the potential of ML/LDPE_CAR films as sustainable and antioxidant food packaging systems to offer protection against lipid oxidation in foods. Sensory evaluation confirmed that ML/LDPE_CAR films provided the peanut samples with an extra aroma due to the volatile degradation products of β-carotene (such as β-cyclocitral or 6-methyl-5-hepten-2-ol).
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Farrag Y, Barral L, Gualillo O, Moncada D, Montero B, Rico M, Bouza R. Effect of Different Plasticizers on Thermal, Crystalline, and Permeability Properties of Poly(3–hydroxybutyrate–co−3–hydroxyhexanoate) Films. Polymers (Basel) 2022; 14:polym14173503. [PMID: 36080578 PMCID: PMC9460745 DOI: 10.3390/polym14173503] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/21/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Poly(3−hydroxybutyrate−co−3−hydroxyhexanoate) (PHBH) films were prepared using a cast film technique. Dioxane was chosen over other polymer solvents as it resulted in homogenous films with better morphology. Several plasticizers with different molecular weights and concentrations were added to the biopolymer solution prior to casting. Thermal, crystalline, and permeability properties were analyzed by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X−ray diffraction (XRD), and both water vapor and oxygen transmission rate analysis. In general, the addition of plasticizers decreased the glass transition temperature (Tg), cold crystallization temperatures (Tcc), melting temperatures, as well as crystallinity degrees and increased the crystallite sizes and water vapor and oxygen transmission rates. The use of isosorbide and low-molecular-weight poly(ethylene glycol) (PEG) lowered the Tg around 30 °C at the highest used concentration, also being the most effective in increasing the crystallite size. When considering isosorbide and low-molecular-weight poly(ethylene glycol) (PEG) as very good plasticizers for PHBH, the question of which plasticizer to use strongly relies on the desired PHBH application.
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Affiliation(s)
- Yousof Farrag
- NEIRID Group (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), IDIS (Instituto de Investigación Sanitaria de Santiago de Compostela), Santiago University Clinical Hospital, Building C, Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Luis Barral
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Serantes, Universidade da Coruña, Avda. 19 de Febrero s/n, 15471 Ferrol, Spain
| | - Oreste Gualillo
- NEIRID Group (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), IDIS (Instituto de Investigación Sanitaria de Santiago de Compostela), Santiago University Clinical Hospital, Building C, Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Danny Moncada
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Serantes, Universidade da Coruña, Avda. 19 de Febrero s/n, 15471 Ferrol, Spain
| | - Belén Montero
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Serantes, Universidade da Coruña, Avda. 19 de Febrero s/n, 15471 Ferrol, Spain
| | - Maite Rico
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Serantes, Universidade da Coruña, Avda. 19 de Febrero s/n, 15471 Ferrol, Spain
| | - Rebeca Bouza
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Serantes, Universidade da Coruña, Avda. 19 de Febrero s/n, 15471 Ferrol, Spain
- Correspondence:
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6
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Effect of Cross-Linking Modification on Structural and Film-Forming Characteristics of Pearl Millet (Pennisetum glaucum L.) Starch. COATINGS 2021. [DOI: 10.3390/coatings11101163] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pearl millet starch was modified using epichlorohydrin (EPI) at different concentrations (0.1%; 0.3%; 0.5%; and 0.8%) and evaluated for physicochemical, rheological, in vitro digestibility, and film-forming characteristics. The degree of cross-linking was observed at higher levels (0.5% and 0.8%) of EPI. Upon cross-linking, breakdown and setback viscosity reduced whereas pasting temperature was increased. Storage modulus (G′) and loss modulus (G″) value of cross-linked (CL) starches ranged between 2877 to 5744 Pa and 168 to 237 Pa, respectively, during the frequency sweep test. A drastic decrease was observed for steady shear (yield stress and consistency index) characteristics of CL starches. Resistant starch (RS) content was increased after starch modification, which imparts its nutritional values and starch modified at 0.8% had the highest RS content. Modifications of starch at different levels had significant effects on the moisture, opacity, solubility and mechanical properties of films. Outcomes of this study will be helpful to understand the properties of native and CL starches for their potential applications in preparation of edible films.
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7
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Alhanish A, Abu Ghalia M. Developments of biobased plasticizers for compostable polymers in the green packaging applications: A review. Biotechnol Prog 2021; 37:e3210. [PMID: 34499430 DOI: 10.1002/btpr.3210] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/03/2021] [Accepted: 09/08/2021] [Indexed: 12/15/2022]
Abstract
The demand for biobased materials for various end-uses in the bioplastic industry is substantially growing due to increasing awareness of health and environmental concerns, along with the toxicity of synthetic plasticizers such as phthalates. This fact has stimulated new regulations requiring the replacement of synthetic conventional plasticizers, particularly for packaging applications. Biobased plasticizers have recently been considered as essential additives, which may be used during the processing of compostable polymers to enormously boost biobased packaging applications. The development and utilization of biobased plasticizers derived from epoxidized soybean oil, castor oil, cardanol, citrate, and isosorbide have been broadly investigated. The synthesis of biobased plasticizers derived from renewable feedstocks and their impact on packaging material performance have been emphasized. Moreover, the effect of biobased plasticizer concentration, interaction, and compatibility on the polymer properties has been examined. Recent developments have resulted in the replacement of synthetic plasticizers by biobased counterparts. Particularly, this has been the case for some biodegradable thermoplastics-based packaging applications.
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Affiliation(s)
- Atika Alhanish
- Department of Chemical Engineering, Faculty of Petroleum and Natural Gas Engineering, University of Zawia, Zawia, Libya
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8
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Peidayesh H, Heydari A, Mosnáčková K, Chodák I. In situ dual crosslinking strategy to improve the physico-chemical properties of thermoplastic starch. Carbohydr Polym 2021; 269:118250. [PMID: 34294287 DOI: 10.1016/j.carbpol.2021.118250] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 05/04/2021] [Accepted: 05/23/2021] [Indexed: 11/17/2022]
Abstract
This study is focused on enhancing the stability of mechanical and chemical properties of thermoplastic starch (TPS) by dual crosslinking strategy through melt processing conditions. The dually crosslinked TPS was prepared by in situ reaction of starch, glycerol, and epichlorohydrin (ECH), resulting in both noncovalent and covalent bond formation. The TPS was characterized by tensile testing, dynamic mechanical analysis (DMTA), rheology, and solubility in water. A substantial increase in tensile strength, Young's modulus, insoluble portion, and stability in water for dually crosslinked TPS was observed in comparison with conventional TPS. The rheology results indicated that the ECH induced the formation of 3D networks and significantly limited the chain mobility of the melted TPS, resulting in an extended relaxation process, which was also verified by DMTA. The suggested strategy avoids any chemical modification pretreatment of starch for introducing covalent bonds into TPS before one-step mixing using the melt processing technique.
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Affiliation(s)
- Hamed Peidayesh
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Abolfazl Heydari
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia.
| | - Katarína Mosnáčková
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Ivan Chodák
- Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
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9
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Properties and behavior under environmental factors of isosorbide-plasticized starch reinforced with microcrystalline cellulose biocomposites. Int J Biol Macromol 2020; 164:2028-2037. [DOI: 10.1016/j.ijbiomac.2020.08.075] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 11/20/2022]
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10
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Özeren HD, Capezza AJ, Gharbi S, Guivier M, Nilsson F, Olsson RT, Hedenqvist MS. Starch/Alkane Diol Materials: Unexpected Ultraporous Surfaces, Near-Isoporous Cores, and Films Moving on Water. ACS OMEGA 2020; 5:28863-28869. [PMID: 33195939 PMCID: PMC7659152 DOI: 10.1021/acsomega.0c04521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
The aim of this study was to find alternative starch plasticizers to glycerol that yielded a less tacky material in high-moisture conditions without leading to starch crystallization. A range of glycerol films containing different potential plasticizers (linear alkane diols) were therefore produced, and it was shown that 1,3-propanediol, in combination with glycerol, was a possible solution to the problem. Several additional interesting features of the starch films were however also revealed. The larger diols, instead of showing plasticizing features, yielded a variety of unexpected structures and film properties. Films with 1,6-hexanediol and 1,7-heptanediol showed an ultraporous film surface and near-isoporous core. The most striking feature was that starch films with these two diols moved/rotated over the surface when placed on water, with no other stimulus than the interaction with water. Films with 1,8-octanediol and 1,10-decanediol did not show these features, but there was clear evidence of a structure with phase-separated crystallized diol in a starch matrix, as observed in high-resolution scanning electron microscopy (SEM) images.
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Affiliation(s)
- Hüsamettin D. Özeren
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
| | - Antonio J. Capezza
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
- Department
of Plant Breeding, Swedish University of
Agricultural Sciences, SE-230
53 Alnarp, Sweden
| | - Samy Gharbi
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
| | - Manon Guivier
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
| | - Fritjof Nilsson
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
| | - Richard T. Olsson
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
| | - Mikael S. Hedenqvist
- School
of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre
and Polymer Technology, Royal Institute
of Technology, SE-100 44 Stockholm, Sweden
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11
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Amjed N, Bhatti IA, Zia KM, Iqbal J, Jamil Y. Synthesis and characterization of stable and biological active chitin-based polyurethane elastomers. Int J Biol Macromol 2020; 154:1149-1157. [DOI: 10.1016/j.ijbiomac.2019.11.097] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/17/2019] [Accepted: 11/10/2019] [Indexed: 02/07/2023]
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12
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Mitrea L, Călinoiu LF, Martău GA, Szabo K, Teleky BE, Mureșan V, Rusu AV, Socol CT, Vodnar DC. Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products. Polymers (Basel) 2020; 12:E532. [PMID: 32131384 PMCID: PMC7182853 DOI: 10.3390/polym12030532] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/20/2020] [Accepted: 02/27/2020] [Indexed: 01/19/2023] Open
Abstract
In the current work the physicochemical features of poly(vinyl alcohol) (PVOH) biofilms, enriched with eco-friendly polyols and with carotenoid-rich extracts, were investigated. The polyols, such as glycerol (Gly), 1,3-propanediol (PDO), and 2,3-butanediol (BDO) were used as plasticizers and the tomato-based pigments (TP) as coloring agents. The outcomes showed that β-carotene was the major carotenoid in the TP (1.605 mg β-carotene/100 DW), which imprinted the orange color to the biofilms. The flow behavior indicated that with the increase of shear rate the viscosity of biofilm solutions also increased until 50 s-1, reaching values at 37 °C of approximately 9 ± 0.5 mPa·s for PVOH, and for PVOH+TP, 14 ± 0.5 mPa·s in combination with Gly, PDO, and BDO. The weight, thickness, and density of samples increased with the addition of polyols and TP. Biofilms with TP had lower transparency values compared with control biofilms (without vegetal pigments). The presence of BDO, especially, but also of PDO and glycerol in biofilms created strong bonds within the PVOH matrix by increasing their mechanical resistance. The novelty of the present approach relies on the replacement of synthetic colorants with natural pigments derived from agro-industrial by-products, and the use of a combination of biodegradable polymers and polyols, as an integrated solution for packaging application in the bioplastic industry.
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Affiliation(s)
- Laura Mitrea
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Lavinia-Florina Călinoiu
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Gheorghe-Adrian Martău
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Katalin Szabo
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
| | - Bernadette-Emoke Teleky
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
| | - Vlad Mureșan
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Alexandru-Vasile Rusu
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania; (A.-V.R.); (C.-T.S.)
| | - Claudia-Terezia Socol
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania; (A.-V.R.); (C.-T.S.)
| | - Dan-Cristian Vodnar
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
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13
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González K, Iturriaga L, González A, Eceiza A, Gabilondo N. Improving mechanical and barrier properties of thermoplastic starch and polysaccharide nanocrystals nanocomposites. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109415] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Zdanowicz M, Staciwa P, Jędrzejewski R, Spychaj T. Sugar Alcohol-Based Deep Eutectic Solvents as Potato Starch Plasticizers. Polymers (Basel) 2019; 11:polym11091385. [PMID: 31450743 PMCID: PMC6780061 DOI: 10.3390/polym11091385] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/16/2019] [Accepted: 08/21/2019] [Indexed: 11/16/2022] Open
Abstract
The aim of this work was to prepare sugar alcohol-based deep eutectic solvents (DES) and test them as starch plasticizers. Thermoplastic starch (TPS) films were obtained via a simple and convenient thermocompression method. Influence of starch/DES premixtures conditioning (preheating, storage time) on TPS properties was investigated. TPS/sorbitol (S)-based DES exhibited similar tensile strength (TS) (8.6 MPa) but twice higher elongation at the break (ε) (33%) when compared with TPS plasticized only with S. Extra treatment, i.e., heating or prolonged storage time, facilitated starch/DES plasticizing. Starch with selected DES was also extruded and the influence of preconditioning and extrusion rotational speed were subsequently studied on thermocompressed films. Extrusion at 100 rpm led to films with TS up to ca. 10 MPa and ε up to 52%. Some differences in film samples morphology obtained via two processing methods were observed. X-ray diffractograms revealed that extruded samples exhibited a V-type peak at 18.2°, with intensity depending on plasticizer total molecular size. Applied techniques (mechanical tests, XRD, Dynamic Mechanical Analysis (DMA), FTIR-Attenuated Total Reflection (ATR), and moisture sorption) indicated that S-based DES forms stronger interactions with starch than glycerol (G) only used as conventional plasticizer, thus leading to better mechanical properties and inhibited tendency to starch recrystallization (studied up to one year).
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Affiliation(s)
- Magdalena Zdanowicz
- Polymer Institute, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Ul. Pulaskiego 10, 70-322 Szczecin, Poland.
| | - Piotr Staciwa
- Polymer Institute, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Ul. Pulaskiego 10, 70-322 Szczecin, Poland
| | - Roman Jędrzejewski
- Institute of Materials Engineering, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology Szczecin, Al. Piastow 10, 70-310 Szczecin, Poland
| | - Tadeusz Spychaj
- Polymer Institute, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Ul. Pulaskiego 10, 70-322 Szczecin, Poland
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15
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Domene-López D, García-Quesada JC, Martin-Gullon I, Montalbán MG. Influence of Starch Composition and Molecular Weight on Physicochemical Properties of Biodegradable Films. Polymers (Basel) 2019; 11:polym11071084. [PMID: 31247882 PMCID: PMC6680497 DOI: 10.3390/polym11071084] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/24/2019] [Indexed: 01/12/2023] Open
Abstract
Thermoplastic starch (TPS) films are considered one of the most promising alternatives for replacing synthetic polymers in the packaging field due to the starch biodegradability, low cost, and abundant availability. However, starch granule composition, expressed in terms of amylose content and phosphate monoesters, and molecular weight of starch clearly affects some film properties. In this contribution, biodegradable TPS films made from potato, corn, wheat, and rice starch were prepared using the casting technique. The effect of the grain structure of each starch on microstructure, transparency, hydration properties, crystallinity, and mechanical properties of the films, was evaluated. Potato starch films were the most transparent and corn starch films the most opaque. All the films had homogeneous internal structures—highly amorphous and with no pores, both of which point to a good starch gelatinization process. The maximum tensile strength (4.48–8.14 MPa), elongation at break (35.41–100.34%), and Young’s modulus (116.42–294.98 MPa) of the TPS films were clearly influenced by the amylose content, molecular weight, and crystallinity of the film. In this respect, wheat and corn starch films, are the most resistant and least stretchable, while rice starch films are the most extensible but least resistant. These findings show that all the studied starches can be considered suitable for manufacturing resistant and flexible films with similar properties to those of synthetic low-density polyethylene (LDPE), by a simple and environmentally-friendly process.
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Affiliation(s)
- Daniel Domene-López
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | | | - Ignacio Martin-Gullon
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - Mercedes G Montalbán
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain.
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16
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Domene-López D, Delgado-Marín JJ, Martin-Gullon I, García-Quesada JC, Montalbán MG. Comparative study on properties of starch films obtained from potato, corn and wheat using 1-ethyl-3-methylimidazolium acetate as plasticizer. Int J Biol Macromol 2019; 135:845-854. [PMID: 31170486 DOI: 10.1016/j.ijbiomac.2019.06.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/23/2019] [Accepted: 06/01/2019] [Indexed: 01/29/2023]
Abstract
Starch films are gaining attention as substitutes of synthetic polymers due to their biodegradability and low cost. Some ionic liquids have been postulated as alternatives to glycerol, one of the best starch plasticizers, due to their great capacity to form hydrogen bonds with starch and hence great ability of preventing starch retrogradation and increasing film stability. In this work, [emim+][Ac-]-plasticized starch films were prepared from potato, corn and wheat starch. The effect of starch molecular structure in terms of granular composition (amylose and phosphate monoester contents) and molecular weight (Mw) on film properties was evaluated. Potato starch films were the most amorphous because of the higher Mw and phosphate monoester content of potato starch, both contributing to a lower rearrangement of the starch chains making the crystallization process difficult. In contrast, corn and wheat starches lead to more crystalline films because of their lower Mw, which may imply higher mobility and crystal growth rate, and lower phosphate monoester content. This more crystalline structure could be the responsible of their better mechanical properties. [emim+][Ac-] can be considered suitable for manufacturing starch films showing corn and wheat starch films similar properties to synthetic low-density polyethylene, but involving a simple and environmentally-friendly process.
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Affiliation(s)
- D Domene-López
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - J J Delgado-Marín
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - I Martin-Gullon
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - J C García-Quesada
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain
| | - M G Montalbán
- Chemical Engineering Department, University of Alicante, Apartado 99, 03080 Alicante, Spain.
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17
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Starch/graphene hydrogels via click chemistry with relevant electrical and antibacterial properties. Carbohydr Polym 2018; 202:372-381. [DOI: 10.1016/j.carbpol.2018.09.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 09/03/2018] [Accepted: 09/04/2018] [Indexed: 12/22/2022]
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18
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Da Silva E Silva N, Pino Hernández EJG, Da Silva Araújo C, Peixoto Joele MRS, Lourenço LDFH. Development and optimization of biodegradable fish gelatin composite film added with buriti oil. CYTA - JOURNAL OF FOOD 2018. [DOI: 10.1080/19476337.2017.1406005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Natácia Da Silva E Silva
- LAPOA/FEA (Faculty of Food Engineering), Federal University of Pará (UFPA), Belém, Pará, Brazil
- Food Technology Department, State University of Pará (UEPA), Cametá, Pará, Brazil
| | - Enrique José Gregorio Pino Hernández
- LAPOA/FEA (Faculty of Food Engineering), Federal University of Pará (UFPA), Belém, Pará, Brazil
- CEB/Centre of Biological Engineering, University of Minho, Braga, Portugal
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Fortunati E, Puglia D, Iannoni A, Terenzi A, Kenny JM, Torre L. Processing Conditions, Thermal and Mechanical Responses of Stretchable Poly (Lactic Acid)/Poly (Butylene Succinate) Films. MATERIALS 2017; 10:ma10070809. [PMID: 28773168 PMCID: PMC5551852 DOI: 10.3390/ma10070809] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 11/29/2022]
Abstract
Poly (lactic acid) (PLA) and poly (butylene succinate) (PBS) based films containing two different plasticizers [Acetyl Tributyl Citrate (ATBC) and isosorbide diester (ISE)] at three different contents (15 wt %, 20 wt % and 30 wt %) were produced by extrusion method. Thermal, morphological, mechanical and wettability behavior of produced materials was investigated as a function of plasticizer content. Filmature parameters were also adjusted and optimized for different formulations, in order to obtain similar thickness for different systems. Differential scanning calorimeter (DSC) results and evaluation of solubility parameter confirmed that similar miscibility was obtained for ATBC and ISE in PLA, while the two selected plasticizers resulted as not efficient for plasticization of PBS, to the limit that the PBS–30ATBC resulted as not processable. On the basis of these results, isosorbide-based plasticizer was considered a suitable agent for modification of a selected blend (PLA/PBS 80:20) and two mixing approaches were used to identify the role of ISE in the plasticization process: results from mechanical analysis confirmed that both produced PLA–PBS blends (PLA85–ISE15)–PBS20 and (PLA80–PBS20)–ISE15 could guarantee advantages in terms of deformability, with respect to the PLA80–PBS20 reference film, suggesting that the promising use of these stretchable PLA–PBS based films plasticized with isosorbide can provide novel solutions for food packaging applications.
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Affiliation(s)
- Elena Fortunati
- Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
| | - Debora Puglia
- Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
| | - Antonio Iannoni
- Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
| | - Andrea Terenzi
- Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
| | - José Maria Kenny
- Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
| | - Luigi Torre
- Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy.
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