A Solvent-Free Approach for Production of Films from Pectin and Fungal Biomass

Gurram, Rajesh; Filho, Pedro F. Souza; Taherzadeh, Mohammad J.; Zamani, Akram

doi:10.1007/s10924-018-1300-x

Cited by 31 publications

(21 citation statements)

References 37 publications

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“…The lower the value, the higher is the resistance to water vapor. The water vapor permeability of bio-based films prepared in the optimization experiment, regardless of preparation method, had a mean value of 1.19 (± 0.08) × 10 −13 kg/m Pa s, which can be compared with the WVP of fungal biomass-reinforced pectin films of 2.35 × 10 −13 kg/m Pa s [28] and edible films from alginate-acerola reinforced with cellulose whiskers of 1.67 (± 0.42) × 10 −13 kg/m Pa s [29]. Both of these studies reported lower WVP values when the reinforcement load increased.…”

Section: Resultsmentioning

confidence: 99%

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The Effect of Glycerol, Sugar, and Maleic Anhydride on Pectin-Cellulose Thin Films Prepared from Orange Waste

et al. 2019

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This study was conducted to improve the properties of thin films prepared from orange waste by the solution casting method. The main focus was the elimination of holes in the film structure by establishing better cohesion between the major cellulosic and pectin fractions. For this, a previously developed method was improved first by the addition of sugar to promote pectin gelling, then by the addition of maleic anhydride. Principally, maleic anhydride was introduced to the films to induce cross-linking within the film structure. The effects of concentrations of sugar and glycerol as plasticizers and maleic anhydride as a cross-linking agent on the film characteristics were studied. Maleic anhydride improved the structure, resulting in a uniform film, and morphology studies showed better adhesion between components. However, it did not act as a cross-linking agent, but rather as a compatibilizer. The middle level (0.78%) of maleic anhydride content resulted in the highest tensile strength (26.65 ± 3.20 MPa) at low (7%) glycerol and high (14%) sugar levels and the highest elongation (28.48% ± 4.34%) at high sugar and glycerol levels. To achieve a uniform film surface with no holes present, only the lowest (0.39%) level of maleic anhydride was necessary.

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Section: Resultsmentioning

confidence: 99%

“…Both of these studies reported lower WVP values when the reinforcement load increased. The lowest value was obtained when fungal biomass load was 35 wt % [28] and when cotton cellulose whiskers were used at 15 wt % [29].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Glycerol, Sugar, and Maleic Anhydride on Pectin-Cellulose Thin Films Prepared from Orange Waste

et al. 2019

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“…Compression molding technique has been widely employed for the development of biofilms or 3D objects without the use of any solvent or binder [ 88 , 102 ]. With this technique, the waste of interest or its dried extract is finely powdered and subjected to high temperatures and pressures through a heated press.…”

Section: Food Waste As Feedstock For Bioplastic Productionmentioning

confidence: 99%

“…Under this thermo-mechanical treatment, proteins undergo denaturation and dissociation leading to the formation of new links and their aggregation to new forms; in addition, biopolymers show a self-binding ability that is exploited to produce three-dimensional objects. Furthermore, the molding method is more suitable for industrial applications since it is characterized by lower energy demand and processing time compared to other techniques like solution casting [ 102 ].…”

Section: Food Waste As Feedstock For Bioplastic Productionmentioning

confidence: 99%

Natural Polymeric Materials: A Solution to Plastic Pollution from the Agro-Food Sector

Pascale²,

et al. 2021

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Conventional petroleum-derived plastics represent a serious problem for global pollution because, when discarded in the environment, are believed to remain for hundreds of years. In order to reduce dependence on fossil resources, bioplastic materials are being proposed as safer alternatives. Bioplastics are bio-based and/or biodegradable materials, typically derived from renewable sources. Food waste as feedstock represents one of the recent applications in the research field of bioplastics production. To date, several food wastes have been used as raw materials for the production of bioplastics, including mostly fruit and vegetable wastes. The conversion of fruit and vegetable wastes into biomaterials could occur through simple or more complex processes. In some cases, biopolymers extracted from raw biomass are directly manufactured; on the other hand, the extracted biopolymers could be reinforced or used as reinforcing agents and/or natural fillers in order to obtain biocomposites. The present review covers available results on the application of methods used in the last 10 years for the design of biomaterials obtained from formulations made up with both fruits and vegetables by-products. Particular attention will be addressed to the waste pre-treatment, to the bioplastic formulation and to its processing, as well as to the mechanical and physical properties of the obtained materials.

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“…The material is used as animal feed but, because of its abundance and low nutritional value, it is sold inexpensively [8,9]. Alternatively, one can take advantage of the polymeric nature of both straw and bran and use them for the production of bio-based materials by heat compression molding, a technique involving the thermo-mechanical processing of a material [10].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Wheat Byproducts for the Co-Production of Packaging Material and Enzymes

2020

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Waste management systems are overloaded with huge streams of plastic, a large part of this being originated from packaging. Additionally, the production of wheat, one of the most cultivated crops in the world, generates low-value lignocellulosic materials, which are mostly discarded. In this study, the wheat lignocellulosic byproducts straw and bran were used for the co-production of enzymes and bio-based materials with possible application as packaging via the compression molding method. The mechanical properties of the films were studied based on the effects of the removal of lignin by alkali and biological pretreatment, the growth of filamentous fungi, the size of the particles, and the enzyme recovery. Generally, the straw films were stiffer than the bran ones, but the highest Young’s modulus was obtained for the biologically pretreated bran (1074 MPa). The addition of a step to recover the fungal cellulases produced during the cultivation had no statistical effect on the mechanical properties of the films. Moreover, alkali and biological pretreatments improved the anaerobic biodegradability of the straw films. Thus, the wheat bran and straw can be used for the co-production of enzymes, materials, and biogas, potentially changing how wheat and packaging wastes are managed.

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A Solvent-Free Approach for Production of Films from Pectin and Fungal Biomass

Cited by 31 publications

References 37 publications

The Effect of Glycerol, Sugar, and Maleic Anhydride on Pectin-Cellulose Thin Films Prepared from Orange Waste

The Effect of Glycerol, Sugar, and Maleic Anhydride on Pectin-Cellulose Thin Films Prepared from Orange Waste

Natural Polymeric Materials: A Solution to Plastic Pollution from the Agro-Food Sector

Valorization of Wheat Byproducts for the Co-Production of Packaging Material and Enzymes

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