scholarly journals Evaluation of the Properties of Cellulose Ester Films that Incorporate Essential Oils

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Atanu Biswas ◽  
Maria do Socorro Rocha Bastos ◽  
Roselayne Ferro Furtado ◽  
Gary Kuzniar ◽  
Veera Boddu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Cellulose Acetate ◽  
Food Packaging ◽  
Cellulose Ester ◽  
Cellulose Esters ◽  
Elongation At Break ◽  
Cellulose Acetate Propionate ◽  
Almost All ◽  
Acetate Butyrate

Films made from cellulose esters are often used as bio-based food packaging materials. In this work, we studied the incorporation of nine essential oils into cellulose acetate, cellulose acetate propionate, and cellulose acetate butyrate. The essential oils were derived from lime, nutmeg, eugenol, pimenta berry, rosemary, petitgrain, coffee, anise, and trans-cinnamaldehyde. In almost all cases, the addition of essential oils to cellulose ester reduced tensile strength and Young’s modulus but increased elongation at break. Thus, an essential oil acted like a plasticizer that enhanced the flexibility of the polymer. Essential oils containing limonene and pinenes (e.g., from lime and nutmeg) gave the strongest plasticizing action, whereas essentials oils containing fatty acids (e.g., from coffee) were the weakest plasticizers. The water barrier property was improved the most when essential oils were added to cellulose acetate; however, different cellulose ester/essential oil combinations showed different effects. Whereas most of the essential oils decreased the transparency of the films, eugenol, pimento berry, and anise were notable exceptions. Thus, depending on a specific application, a particular polymer/EO combination can be used to give the optimal performance.

scholarly journals The production of ecofriendly biofilm with natural oil for food packaging

2020 ◽  
Author(s):  
Emine Arman Kandirmaz ◽  
◽  
Omer Bunyamin Zelzele ◽  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Shelf Life ◽  
Food Packaging ◽  
Biological Activities ◽  
Uv Spectroscopy ◽  
Antimicrobial Properties ◽  
Active Packaging ◽  
E Coli ◽  
Active Food Packaging

The use of edible biofilms in food packaging reduces the use of petrochemical polymers that are harmful to human health, such as PE, PP, PET. The second most common biopolymer in nature, chitosan is a nontoxic, nonantigenic, biocompatible and biodegradable polymer. Considering these features, it is frequently used in food packaging applications. Increasing needs for food amount and quality canalized food ındustry to fund in new packaging techniques that improve storage life and grade of foods. Active packaging systems, one of these methods, can be designed as a sensor, antimicrobial or antimigrant in order to extend the shelf life of the food product and to inform the shelf life in possible degradation. Essential oils, which are antimicrobial environmentally friendly packaging material additives, are used due to their effective biological activities. Essential oils that have known antimicrobial properties include lavender, rosemary, mint, eucalyptus and geranium. These oils are also edible. In this study, it is aimed to produce antimicrobial, ecofriendly, edible, printable biofilm for active packaging, using chitosan and peppermint essential oil. For this purpose, chitosan biofilms containing different rates (0, 1, 2.5, 5, 10%) of peppermint essential oil were produced by solvent casting method. Surface morphology were examined by SEM. The transparency of biofilms was determined by UV spectroscopy. Antimicrobial properties of the obtained films were determined against S. aureus and E. coli. Biofilms were printed with screen printing. The color, gloss, contact angle, surface tension values of all printed and unprinted samples were examined. As a result, chitosan biofilms which are loaded with peppermint essential oil were successfully produced. Biofilms are colorless, highly transparent and have good printability. It is concluded that the amount of peppermint essential oil increased inhibitory feature against S. aureus and E. coli. When the obtained results are examined, it is determined that the printable, ecofriendly, edible biofilms can be used in active food packaging applications.

scholarly journals Development of a Multivariate Predictive Dissolution Model for Tablets Coated with Cellulose Ester Blends

2020 ◽  
Vol 13 (10) ◽  
pp. 311
Author(s):  
Eman M. Mohamed ◽  
Tahir Khuroo ◽  
Hamideh Afrooz ◽  
Sathish Dharani ◽  
Khaldia Sediri ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Near Infrared ◽  
Correlation Coefficients ◽  
Partial Least Square ◽  
Least Square ◽  
Partial Least Square Regression ◽  
Cellulose Ester ◽  
Cellulose Esters ◽  
Dissolution Model ◽  
Predicted Values

The focus of the present investigation was to develop a predictive dissolution model for tablets coated with blends of cellulose acetate butyrate (CAB) 171-15 and cellulose acetate phthalate (C-A-P) using the design of experiment and chemometric approaches. Diclofenac sodium was used as a model drug. Coating weight gain (X1, 5, 7.5 and 10%) and CAB 171-15 percentage (X2, 33.3, 50 and 66.7%) in the coating composition relative to C-A-P and were selected as independent variables by full factorial experimental design. The responses monitored were dissolution at 1 (Y1), 8 (Y2), and 24 (Y3) h. Statistically significant (p < 0.05) effects of X1 on Y1 and X2 on Y1, Y2, and Y3 were observed. The models showed a good correlation between actual and predicted values as indicated by the correlation coefficients of 0.964, 0.914, and 0.932 for Y1, Y2, and Y3, respectively. For the chemometric model development, the near infrared spectra of the coated tablets were collected, and partial least square regression (PLSR) was performed. PLSR also showed a good correlation between actual and model predicted values as indicated by correlation coefficients of 0.916, 0.964, and 0.974 for Y1, Y2, and Y3, respectively. Y1, Y2, and Y3 predicted values of the independent sample by both approaches were close to the actual values. In conclusion, it is possible to predict the dissolution of tablets coated with blends of cellulose esters by both approaches.

Evaluation of Mechanical and Thermal Properties of MCC/PLA Composite Compatibilized with Modified Cellulose

2013 ◽  
Vol 747 ◽  
pp. 698-702 ◽  
Author(s):  
Voravadee Suchaiya ◽  
Duangdao Aht-Ong
Keyword(s):  
Reaction Time ◽  
Power Output ◽  
Suitable Condition ◽  
Cellulose Ester ◽  
Mechanical And Thermal Properties ◽  
Cellulose Esters ◽  
Elongation At Break ◽  
Degradation Temperature ◽  
Biocomposite Films ◽  
Twin Screw

Biocomposite films from polylactic acid (PLA) and 40wt% banana stem microcrystalline cellulose (BS MCC) were prepared by a twin screw extruder. Two types of cellulose ester, i.e. cellulose butyrate and cellulose laurate were used as a compatibilizer. The cellulose esters were prepared via acylation process under microwave heating. The proper condition for preparing cellulose butyrate was 180 sec of reaction time and 80 watt of power output, while the suitable condition for preparing cellulose laurate was 150 sec of reaction time and 160 watt of power output, respectively. These suitable conditions led to the highest %WI and the absence of the degradation of cellulose. The FT-IR and NMR spectra techniques confirmed that butyrate and laurate were grafted on the BS MCC. For biocomposite films, although the increase of cellulose laurate or cellulose butyrate induced the decrease of Youngs modulus of 40wt% BS MCC/PLA composite, the elongation at break of 40wt% BS MCC/PLA composite was increased. Besides, the addition of 5wt% cellulose butyrate or cellulose laurate resulted in the highest tensile properties, especially in elongation at break, when compared to other contents of cellulose ester. Moreover, cellulose butyrate is an effective compatibilizer to improve the elongation at break of 40wt% BS MCC/PLA since cellulose butyrate had better compatibility with BS MCC and PLA matrix. However, the addition of two types of cellulose ester led to the decrease in the degradation temperature (Td) of 40wt% BS MCC/PLA, particularly in case of the addition of cellulose laurate.

Preparation and characterization of cellulose bromo-isobutyl ester based on filter paper

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Rina Wu ◽  
Qiuyu Wang ◽  
Huayu Liu ◽  
Gaosheng Wang ◽  
Peng Lu
Keyword(s):  
Filter Paper ◽  
Food Packaging ◽  
Degree Of Substitution ◽  
Raw Material ◽  
Esterification Reaction ◽  
Dimethyl Formamide ◽  
Cellulose Ester ◽  
Cellulose Esters ◽  
Simple Method ◽  
Isobutyl Ester

AbstractCellulose bromo-isobutyl ester was prepared using filter paper as raw material through esterification reaction with 2-Bromoisobutyryl bromide (BIBB) in N, N-Dimethyl-formamide (DMF). Cellulose esters with different degree of substitution were obtained. FTIR result indicated the successful introduction of bromo isobutyryl group in cellulose to obtain cellulose ester (Cell-Br). The surface of modified filter paper become rough and grooves could be observed by SEM. The thermal stability of the cellulose ester decreased in comparison with unmodified filter paper. Besides, the hydrophobicity of the filter paper was improved and the water contact angle increased from 73.4° to 116.5° with increasing degree of substitution. The water vapor barrier property was improved by 26 %. Furthermore, it was also found the modified filter paper possessed antibacterial activity against S. aureus bacteria. The modified filter paper obtained could be potentially used in food packaging fields and the results provide a simple method to prepare functional filter paper.

Synthesis of cellulose acetate propionate and cellulose acetate butyrate in a CO2/DBU/DMSO system

Cellulose ◽  
2017 ◽  
Vol 25 (1) ◽  
pp. 205-216 ◽  
Author(s):  
Qinqin Xu ◽  
Longchu Song ◽  
Lihua Zhang ◽  
Gang Hu ◽  
Qin Chen ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Cellulose Acetate Butyrate ◽  
Cellulose Acetate Propionate ◽  
Dmso System ◽  
Acetate Butyrate

Antimicrobial Effects of Cinnamon and Rosemary Essential Oils

2015 ◽  
Vol 731 ◽  
pp. 385-388 ◽  
Author(s):  
Dong Mei Ding ◽  
Fang Jie Wang ◽  
Xin Xin Liu ◽  
Chun Yang Han
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Food Packaging ◽  
Packaging Material ◽  
Antimicrobial Efficacy ◽  
Chemical Components ◽  
Strong Inhibition ◽  
Active Constituents ◽  
Cinnamon Essential Oil ◽  
Rosemary Essential Oil

The objectives of this study were to evaluate the antimicrobial efficacy of cinnamon essential oil (CEO) and rosemary essential oil (REO) against 4 food-related microorganisms. The chemical components of CEO and REO were also analyzed by GC/MS. The major active constituents of CEO were cinnamaldehyde (80.010%) and 2-methoxycinnamaldehyde (10.550%), and the major active constituents of REO were 1,8-Cineole (51.783%) and α-Pinene (13.508%).The antimicrobial results indicated that both them display strong inhibition against 4 strains. The combination showed additive efficacy against all tested microorganisms. Thus, our study demonstrated that CEO and REO can be considered potential alternatives to control pathogens and microbial in the food or food packaging material.

scholarly journals Thermoplastic Cellulose-Based Compound for Additive Manufacturing

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1701
Author(s):  
Kirsi Immonen ◽  
Pia Willberg-Keyriläinen ◽  
Jarmo Ropponen ◽  
Asta Nurmela ◽  
Sini Metsä-Kortelainen ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Cellulose Acetate ◽  
High Performance ◽  
Charpy Impact ◽  
Cellulose Fiber ◽  
Raw Material ◽  
Poly Lactic Acid ◽  
Cellulose Ester ◽  
Cellulose Content ◽  
Cellulose Acetate Propionate

The increasing environmental awareness is driving towards novel sustainable high-performance materials applicable for future manufacturing technologies like additive manufacturing (AM). Cellulose is abundantly available renewable and sustainable raw material. This work focused on studying the properties of thermoplastic cellulose-based composites and their properties using injection molding and 3D printing of granules. The aim was to maximize the cellulose content in composites. Different compounds were prepared using cellulose acetate propionate (CAP) and commercial cellulose acetate propionate with plasticizer (CP) as polymer matrices, microcellulose (mc) and novel cellulose-ester additives; cellulose octanoate (C8) and cellulose palmitate (C16). The performance of compounds was compared to a commercial poly(lactic acid)-based cellulose fiber containing composite. As a result, CP-based compounds had tensile and Charpy impact strength properties comparable to commercial reference, but lower modulus. CP-compounds showed glass transition temperature (Tg) over 58% and heat distortion temperature (HDT) 12% higher compared to reference. CAP with C16 had HDT 82.1 °C. All the compounds were 3D printable using granular printing, but CAP compounds had challenges with printed layer adhesion. This study shows the potential to tailor thermoplastic cellulose-based composite materials, although more research is needed before obtaining all-cellulose 3D printable composite material with high-performance.

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