Lignin and holocellulose from pecan nutshell as reinforcing fillers in poly (lactic acid) biocomposites

Agustin-Salazar, Sarai; Cerruti, Pierfrancesco; Medina-Juárez, Luis Ángel; Scarinzi, Gennaro; Malinconico, Mario; Soto‐Valdez, Herlinda; Gámez-Meza, Nohemí

doi:10.1016/j.ijbiomac.2018.04.120

Cited by 58 publications

(41 citation statements)

References 45 publications

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“…Conversely, high ductility and improved elongation at break were provided by the acid insoluble lignin in the PLA bioplastics. Plain PLA showed higher resilience than all the other biocomposites owing to the low compatibility between lignin and PLA [106]. Moreover, isolated lignin and holo-cellulose components were blended with PHB.…”

Section: Application Of Lignin In Bioplasticsmentioning

confidence: 99%

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

2019

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Lignocellulosic fibers and lignin are two of the most important natural bioresources in the world. They show tremendous potential to decrease energy utilization/pollution and improve biodegradability by replacing synthetic fibers in bioplastics. The compatibility between the fiber-matrix plays an important part in the properties of the bioplastics. The improvement of lignocellulosic fiber properties by most surface treatments generally removes lignin. Due to the environmental pollution and high cost of cellulose modification, focus has been directed toward the use of lignocellulosic fibers in bioplastics. In addition, lignin-reinforced bioplastics are fabricated with varying success. These applications confirm there is no need to remove lignin from lignocellulosic fibers when preparing the bioplastics from a technical point of view. In this review, characterizations of lignocellulosic fibers and lignin related to their applications in bioplastics are covered. Then, we generalize the developments and problems of lignin-reinforced bioplastics and modification of lignin to improve the interaction of lignin-matrix. As for lignocellulosic fiber-reinforced bioplastics, we place importance on the low compatibility of the lignocellulosic fiber–matrix. The applications of lignin-containing cellulose and lignocellulosic fibers without delignification in the bioplastics are reviewed. A comparison between lignocellulosic fibers and lignin in the bioplastics is given.

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Section: Application Of Lignin In Bioplasticsmentioning

confidence: 99%

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

2019

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“…PLA-based materials show similar barrier properties to polystyrene (PS), a slow-crystallizing pattern similar to poly (ethylene terephthalate) (PET), and thermal stability to PVC [9,10]. Up to date, PLA has been widely investigated to obtain functional biodegradable packages and as a potential material in the sector of active food packaging [11][12][13][14]. It is presented in the literature that incorporation of metal oxide nanoparticles (TiO 2 , ZnO or Ag 2 O) [15][16][17][18][19][20] into the PLA matrix can improve the mechanical, barrier and antimicrobial properties of the final material.…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical and Antiadhesive Properties of Poly(Lactic Acid)/Grapevine Cane Extract Films against Food Pathogenic Microorganisms

et al. 2020

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The aim of this study was evaluation of the physico-chemical properties and adhesion of microorganisms on poly(lactic acid) (PLA)-based films loaded with grapevine cane extract (5–15 wt%). The films were processed in a compression molding machine and characterized by mechanical, thermal, water vapor barrier and microbiological tests. The best physical-chemical properties for PLA film containing 10 wt% of extract were obtained. The addition of 10 wt% of extract into PLA films led to decrease of tensile strength for 52% and increase in elongation at break for 30%. The water vapor barrier of this film formulation was enhanced for 55%. All films showed thermal stability up to 300 °C. The low release of the active compounds from films negatively influenced their antimicrobial and antifungal activity. Botrytis cinerea growth inhibition onto PLA containing extracts (PLA-E) films was in the range between 15 and 35%. On the other side, PLA/extract films exhibited the antiadhesive properties against Pseudomonas aeruginosa, Pectobacterium carotovorum, Saccharomyces pastorianus, and Listeria monocytogenes, which could imply their potential to be used as sustainable food packaging materials for preventing microbial contamination of food.

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“…It would be like returning some of the protective function of the shells back to the kernels, without the inconvenience of a hard, inedible shell. Pecan nutshells are sources of lignin and cellulose . Whereas cellulose and derivatives may be used as coating matrices, lignin has good properties as a reinforcement and UV absorber, although it may darken coatings …”

Section: Nutshells As Sources Of Coating Componentsmentioning

confidence: 99%

In a nutshell: prospects and challenges on coatings for edible kernels

et al. 2020

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Edible kernels have been popular food items since ancient times. Although in‐shell nuts are naturally protected and relatively shelf stable, convenience demands require their commercialization in shelled form. However, whereas shelled kernels are more convenient, they are more exposed to oxygen, and thus more susceptible to oxidative rancidity and loss of crunchiness, which negatively affect the product acceptability. In this review, we discuss the role of edible coatings in extending stability of edible kernels, which is an opportunity to be better explored by the industry. The discussion also includes the role of antioxidants in the context of active coatings. Finally, future prospects and research challenges are addressed. © 2019 Society of Chemical Industry

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Lignin and holocellulose from pecan nutshell as reinforcing fillers in poly (lactic acid) biocomposites

Cited by 58 publications

References 45 publications

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

Applications of Lignocellulosic Fibers and Lignin in Bioplastics: A Review

Physico-Chemical and Antiadhesive Properties of Poly(Lactic Acid)/Grapevine Cane Extract Films against Food Pathogenic Microorganisms

In a nutshell: prospects and challenges on coatings for edible kernels

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