scholarly journals Revisión: Fibroína de seda y sus potenciales aplicaciones en empaques biodegradables para alimentos/Review: silk fibroin and their potential applications on biodegradable food packaging

Prospectiva ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 7-15 ◽  
Author(s):  
Angel Daniel Rios Osorio ◽  
Catalina Alvarez-Lopéz ◽  
Luis Javier Cruz Riaño ◽  
Adriana Restrepo-Osorio
Keyword(s):  
Silk Fibroin ◽  
Food Packaging ◽  
Potential Applications

En el presente artículo se hace una revisión bibliográfica de la fibroína de seda (FS) y sus potenciales aplicaciones en empaques biodegradables de alimentos. Son cuatro temas principales en los que se centra el artículo: empaques, biopolímeros en empaques, FS y finalmente, la FS en empaques para alimentos. Razones como el cuidado del medioambiente y uso responsable de los recursos, al igual que la necesidad de desarrollar materiales biodegradables, han promovido investigaciones con diferentes biopolímeros, entre los que se encuentra la FS. Esta proteína representa cerca del 70% de la fibra de seda y puede ser obtenida a partir de capullos de primera calidad o de los desperdicios generados en la producción serícola. Dependiendo del método con el que se obtenga la FS, se pueden tener diferentes características fisicoquímicas que pueden diversificar las áreas de interés y las aplicaciones de la misma. En el caso de empaques para alimentos, la FS puede conferirle al empaque ciertas propiedades, como: aumento de la permeabilidad de oxígeno, resistencia a la rotura, efecto antimicrobiano y una mayor velocidad de degradación del biopolímero.

A New Application of Hollow Nanosilica Added to Modified Polypropylene to Prepare Nanocomposite Films

NANO ◽  
2021 ◽  
pp. 2150117
Author(s):  
Xu Li ◽  
Ying-Jun Zhang ◽  
Chi-Hui Tsou ◽  
Yi-Hua Wen ◽  
Chin-San Wu ◽  
...  
Keyword(s):  
Food Packaging ◽  
Nanocomposite Films ◽  
X Ray Diffraction ◽  
Hollow Silica ◽  
Barrier Materials ◽  
Water Vapor Barrier ◽  
Potential Applications ◽  
And Storage ◽  
Food Packaging Films ◽  
Thermal Stability Of

Since the inception of research on hollow silica, the use of hollow nanosilica (HNS) as additives in barrier materials has not been reported. In this study, we evaluated the capacity of HNS as an additive in modified polypropylene (MPP). According to X-ray diffraction (XRD), the crystallinity, tensile strength, and thermal stability of MPP/HNS nanocomposite containing 0.1[Formula: see text]phr HNS approached maximum values. Moreover, the nanocomposite had the best performance in terms of water vapor barrier and oxygen resistance. The reasons for the improvement in barrier performance were discussed. Scanning electron microscopy revealed that HNS at a low content dispersed well in MPP. In conclusion, the synthesized HNS can be used as an additive in barrier materials, and it would have potential applications in the fields of food packaging films and storage containers or materials.

scholarly journals Silk Polymers and Nanoparticles: A Powerful Combination for the Design of Versatile Biomaterials

2020 ◽  
Vol 8 ◽  
Author(s):  
Cristina Belda Marín ◽  
Vincent Fitzpatrick ◽  
David L. Kaplan ◽  
Jessem Landoulsi ◽  
Erwann Guénin ◽  
...  
Keyword(s):  
Silk Fibroin ◽  
Textile Industry ◽  
Volume Ratio ◽  
Inorganic Nanoparticles ◽  
Added Value ◽  
Digital Light Processing ◽  
Potential Applications ◽  
Manufacturing Techniques ◽  
And Performance

Silk fibroin (SF) is a natural protein largely used in the textile industry but also in biomedicine, catalysis, and other materials applications. SF is biocompatible, biodegradable, and possesses high tensile strength. Moreover, it is a versatile compound that can be formed into different materials at the macro, micro- and nano-scales, such as nanofibers, nanoparticles, hydrogels, microspheres, and other formats. Silk can be further integrated into emerging and promising additive manufacturing techniques like bioprinting, stereolithography or digital light processing 3D printing. As such, the development of methodologies for the functionalization of silk materials provide added value. Inorganic nanoparticles (INPs) have interesting and unexpected properties differing from bulk materials. These properties include better catalysis efficiency (better surface/volume ratio and consequently decreased quantify of catalyst), antibacterial activity, fluorescence properties, and UV-radiation protection or superparamagnetic behavior depending on the metal used. Given the promising results and performance of INPs, their use in many different procedures has been growing. Therefore, combining the useful properties of silk fibroin materials with those from INPs is increasingly relevant in many applications. Two main methodologies have been used in the literature to form silk-based bionanocomposites: in situ synthesis of INPs in silk materials, or the addition of preformed INPs to silk materials. This work presents an overview of current silk nanocomposites developed by these two main methodologies. An evaluation of overall INP characteristics and their distribution within the material is presented for each approach. Finally, an outlook is provided about the potential applications of these resultant nanocomposite materials.

Effect of coagulation bath parameters on the morphology and absorption behavior of a skin–core filament based on biomedical polyurethane and native silk fibroin microparticles

2019 ◽  
Vol 90 (3-4) ◽  
pp. 460-468 ◽  
Author(s):  
Yan Zhuang ◽  
Han Wang ◽  
Linfeng Wang ◽  
Changjun Liu ◽  
Yuan Xu ◽  
...  
Keyword(s):  
Drug Release ◽  
Water Absorption ◽  
Silk Fibroin ◽  
Controlled Drug Release ◽  
Coagulation Bath ◽  
Wet Spinning ◽  
Electron Microscopy Analysis ◽  
Potential Applications ◽  
Spinning Process ◽  
Biomedical Polyurethane

This study investigates the effect of the constituents and temperature of a coagulation bath on the morphology and water absorption behavior of a skin–core filament, which has potential application in the field of controlled drug release, based on biomedical polyurethane (BPU) and native silk fibroin microparticles (NSFPs). BPU solution and BPU/NSFP blend solution were extruded from the cortex and core channel of a coaxial double injector into a coagulation bath with different constituents and at different temperatures to form filaments. Scanning electron microscopy analysis of the skin–core filament prepared by wet-spinning revealed that the addition of ethanol decreased the exchange speed between the solvent and non-solvent and led to the formation of micropores on the surface. Meanwhile, the interface between the cortex and core became pronounced and the water absorption capability of the filament decreased with increasing ethanol concentration in the coagulation bath. The high temperature of the coagulation bath also improved the exchange speed between the solvent and non-solvent; however, its effect on the morphology of the filament was weak. Thus, a skin–core filament with different morphologies and water absorption behaviors was fabricated by controlling the constituents and temperature of the coagulation bath during the wet-spinning process. This skin–core filament has potential applications in controlled drug release.

scholarly journals Coimmobilization of Naringinases on Silk Fibroin Nanoparticles and Its Application in Food Packaging

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Min-Hui Wu ◽  
Lin Zhu ◽  
Zhen-Zhen Zhou ◽  
Yu-Qing Zhang
Keyword(s):  
Aqueous Solution ◽  
Enzyme Activity ◽  
Silk Fibroin ◽  
Food Processing ◽  
Food Packaging ◽  
Residual Activity ◽  
Cross Linking ◽  
Native Form ◽  
Silk Fibroin Nanoparticles ◽  
Efficient Processing

Bombyx mori silk fibroin is a macromolecular biopolymer with remarkable biocompatibility. It was degummed and subjected to a series of treatments, including dissolution and dialysis, to yield an aqueous solution of silk fibroin, which was introduced rapidly into excess acetone to produce crystalline silk fibroin nanoparticles (SFNs), which were conjugated covalently with naringinase using glutaraldehyde as the cross-linking reagent. The SFN naringinases are easily recovered by centrifugation and can be used repeatedly. Naringinase is a bienzyme consisting of α-L-rhamnosidase and flavonoid-β-glucosidase. The enzyme activity and its kinetics were similar to those of the native form, and the optimum reactive temperature for both is 55°C. In our study, centrifugation allowed the separation of enzyme and substrate; after eight cycles the SFN naringinases retained >70% residual activity. The highly efficient processing technology and the use of SFN as a novel vector for a bienzyme have great potential for research and the development of food processing such as the debittering of naringin-containing juices.

scholarly journals Design and performance of a poly(vinyl alcohol)/silk fibroin enzymatically crosslinked semi-interpenetrating hydrogel for a potential hydrophobic drug delivery

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 41074-41082 ◽  
Author(s):  
Chunqing Niu ◽  
Xiang Li ◽  
Yiyu Wang ◽  
Xinyu Liu ◽  
Jian Shi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Sustained Release ◽  
Pore Structure ◽  
Silk Fibroin ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hydrophobic Drug ◽  
Potential Applications ◽  
And Performance

Enzymatically cross-linked PVA/SF semi-IPN hydrogels with tunable pore structure have potential applications in sustained release of hydrophobic drug.

scholarly journals Silk fibroin hydrogels for potential applications in photodynamic therapy

Biopolymers ◽  
2018 ◽  
pp. e23245 ◽  
Author(s):  
Jose Eduardo U. Rojas ◽  
Barbara B. Gerbelli ◽  
Anderson O. Ribeiro ◽  
Iseli L. Nantes‐Cardoso ◽  
Francesca Giuntini ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Silk Fibroin ◽  
Potential Applications

Toxicity of Graphene Oxide on Intestinal Bacteria and Caco-2 Cells

2015 ◽  
Vol 78 (5) ◽  
pp. 996-1002 ◽  
Author(s):  
TRANG H. D. NGUYEN ◽  
MENGSHI LIN ◽  
AZLIN MUSTAPHA
Keyword(s):  
Graphene Oxide ◽  
Food Packaging ◽  
Antibacterial Properties ◽  
Intestinal Bacteria ◽  
Cytotoxic Action ◽  
Human Intestinal Bacteria ◽  
Potential Applications ◽  
Weak Adsorption ◽  
Agriculture And Food

In recent years, novel nanomaterials have received much attention due to their great potential for applications in agriculture, food safety, and food packaging. Among them, graphene and graphene oxide (GO) are emerging as promising nanomaterials that may have a profound impact on food packaging. However, there are some concerns from consumers and the scientific community about the potential toxicity and biocompatibility of nanomaterials. In this study, we investigated the antibacterial properties of GO against human intestinal bacteria. The cytotoxicity of GO was also studied in vitro using the Caco-2 cell line derived from a colon carcinoma. Electron microscopy was used to investigate the morphology of GO and the interaction between GO flakes and Caco-2 cells. GO at different concentrations (10 to 500 μg/ml) exhibited no toxicity against the selected bacteria and a mild cytotoxic action on Caco-2 cells after 24 h of exposure. The results show that weak adsorption of medium nutrients may contribute to GO's low toxicity. This study suggests that GO is biocompatible and has a potential to be used in agriculture and food science, indicating that more studies are needed to exploit its potential applications.

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