Effect and mechanism of cellulose nanofibrils on the active functions of biopolymer-based nanocomposite films

Yu, Zhilong; Alsammarraie, Fouad K.; Nayigiziki, Francois Xavier; Wang, Wei; Vardhanabhuti, Bongkosh; Mustapha, Azlin; Lin, Mengshi

doi:10.1016/j.foodres.2017.05.009

Cited by 105 publications

(44 citation statements)

References 38 publications

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“…High peaks were identified around 1000 cm −1 especially for the samples that contain plasticizers (1087 and 1141 cm −1 for PVOH+PDO, 1087 and 1139 cm −1 for PVOH+PDO+TP, 1085 and 1141 cm −1 for PVOH+BDO, and 1083 and 1139 cm −1 for PVOH+BDO+TP. In addition, 1037 and 1141 cm −1 for PVOH+Gly, 1039 and 1139 cm −1 for PVOH+Gly+TP), a fact that indicates the presence of C-O bonds specific to diols and triols [66,74,76]. The presence in TP of compounds such as β-carotene and lutein can be associated with the small peaks observed around 1500 cm −1 for the samples supplemented with TP (1566 cm −1 for PVOH+TP and 1568 cm −1 for PVOH+PDO+TP/PVOH+BDO+TP/PVOH+Gly+TP) peaks that indicate C=C bonds [77].…”

Section: Ftir Analysismentioning

confidence: 98%

“…The FTIR results obtained for the present work are illustrated in Figure 7. All samples recorded a large spectrum of different heights around 3300 cm −1 (PVOH/PVOH+TP: 3277 cm −1 ,PVOH+Gly/PVOH+Gly+TP: 3280 cm −1, PVOH+PDO: 3275 cm −1 , PVOH+PDO+TP: 3278 cm −1 , and PVOH+BDO/PVOH+BDO+TP: 3278 cm −1 ), results that are associated with the presence of inter-and intramolecular hydrogen-bonded -OH groups and C-H stretching, respectively [66,73,74]. All samples recorded two small signals between 2800 and 3000 cm −1 (2906 and 2939 cm −1 for PVOH/PVOH+PDO/PVOH+BDO, 2908 and 2395 cm −1 for PVOH+PDO+TP/PVOH+BDO+TP, 2910 and 2937 cm −1 for PVOH+Gly, and 2915 and 2933 cm −1 for PVOH+Gly+TP) that are attributed to C-H stretches [75].…”

Section: Ftir Analysismentioning

confidence: 99%

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Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products

et al. 2020

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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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Section: Ftir Analysismentioning

confidence: 98%

Section: Ftir Analysismentioning

confidence: 99%

Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products

et al. 2020

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“…Then, their absorbance was measured at a wavelength of 600 nm on a spectrophotometer (756PC, Shanghai Haoyu Hengping Scientific Instrument Co., Ltd., Shanghai, China) using a dry, clean, and clear glass cuvette as the control. Record the measurements and calculate the average value [21].…”

Section: Light Transmittancementioning

confidence: 99%

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

2018

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A sodium alginate/chitosan solution was prepared by dissolving sodium alginate, chitosan, and glycerol in an acetic acid solution. This solution was then combined with a sodium carboxymethyl cellulose solution and the mixture was cast onto a glass plate and dried at a constant temperature of 60 • C. Then, a carboxymethyl cellulose/sodium alginate/chitosan composite film was obtained by immersing the film in a solution of a cross-linking agent, CaCl 2 , and air-drying the resulting material. First, the most advantageous contents of the three precursors in the casting solution were determined by a completely random design test method. Thereafter, a comprehensive orthogonal experimental design was applied to select the optimal mass ratio of the three precursors. The composite film obtained with sodium alginate, sodium carboxymethyl cellulose, and chitosan contents of 1.5%, 0.5%, and 1.5%, respectively, in the casting solution displayed excellent tensile strength, water vapor transmission rate, and elongation after fracture. Moreover, the presence of chitosan successfully inhibited the growth and reproduction of microorganisms. The composite film exhibited antibacterial rates of 95.7% ± 5.4% and 93.4% ± 4.7% against Escherichia coli and Staphylococcus aureus, respectively. Therefore, the composite film is promising for antibacterial food packaging applications.

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“…For instance, Shankar and his coworkers added copper oxide nanoparticles (CuONPs) to various types of carbohydrate biopolymers and samples exhibited strong antibacterial activity against Escherichia coli and Listeria monocytogenes [17]. Besides, researchers developed edible nanocomposites based on chitosan/starch corn and cellulose nanofibrils (CNFs) as an antibacterial agent and consequently antimicrobial properties of the edible films with 80% and 100% w/w CNFs were increased by up to 2 log CFU/g on day 8 in a beef model [18]. In another research, a combination of montmorillonitecopper oxide (MMT-CuO) was used to produce antibacterial films based on chitosan.…”

Section: Advances In Polymer Technologymentioning

confidence: 99%

Development of Antibacterial Nanocomposite: Whey Protein-Gelatin-Nanoclay Films with Orange Peel Extract and Tripolyphosphate as Potential Food Packaging

Shams

Ebrahimi

Khodaiyan

2019

Advances in Polymer Technology

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Antibacterial and biodegradable whey protein isolate (WPI-) gelatin nanocomposites were prepared using natural orange peel extract (OPE) in percentage of 7, 14, and 21% (v/v solution) and Cloisite 30B (5% w/w dry whey protein) made by a casting method. Mechanical, physical, and antibacterial properties of prepared films were measured as a function of OPE concentration. Higher concentrations of OPE led to higher antibacterial activity, tensile strength, and water solubility, but lower moisture content and transparency. The films microstructures were studied by field emission scanning electron microscopy (FESEM) and ATR-FTIR. Overall, the film containing 21%(v/v) OPE resulted in the best antibacterial, mechanical, and physical performance. Addition of tripolyphosphate (TPP) as a crosslinker to this sample led to the significant increase in transparency. Cloisite 30B, OPE, and TPP can therefore be used to improve the properties of WPI films as a promising natural food packaging.

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Effect and mechanism of cellulose nanofibrils on the active functions of biopolymer-based nanocomposite films

Cited by 105 publications

References 38 publications

Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products

Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

Development of Antibacterial Nanocomposite: Whey Protein-Gelatin-Nanoclay Films with Orange Peel Extract and Tripolyphosphate as Potential Food Packaging

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