scholarly journals Physical and Antimicrobial Properties of Hydroxypropyl Starch Bio-plastics Incorporated with Nyamplung (Calophyllum inophyllum) Cake Extract as an Eco-Friendly Food Packaging

2019 ◽  
Vol 125 ◽  
pp. 07011
Author(s):  
Rini Umiyati ◽  
Chusnul Hidayat ◽  
Ria Millati ◽  
Teguh Ariyanto
Keyword(s):  
Food Packaging ◽  
Water Solubility ◽  
Antimicrobial Properties ◽  
Sample Surface ◽  
Inhibition Zone ◽  
Spectroscopy Analysis ◽  
Calophyllum Inophyllum ◽  
Gram Positive Bacteria ◽  
Highest Weight ◽  
Hydroxypropyl Starch

Nyamplung (Calophyllum inophyllum) cake as a by-product of nyamplung oil production is still limited. This research aimed to evaluate characteristics of antimicrobial bio-plastic made from hydroxypropyl starch as a basic ingredient and Nyamplung cake extract as additive. Nyamplung cake extract addition affected bio-plastic mechanical property by reduction of tensile strength but improved physical properties by reduction of vapor and oxygen permeability, water solubility, and increased elongation. This was probably due to the extract serve as natural crosslinking. Fourier Transform Infrared Spectroscopy analysis showed no difference in five bio-plastic samples, which probably caused by low concentration of extract. Thermogravimetry analysis showed the highest weight reduction in control of 95.824% and the lowest on Ext2% of 84.471%. Morphology analysis showed agglomeration of the extract on sample surface due to uneven ingredient distribution in mixture. Bio-plastic was more sensitive against gram positive bacteria than gram negative with their respective largest inhibition zone of 30 mm (Staphylococcus aureus) and 23 mm (Escherichia coli). This was probably due to the content of the extract serve as natural crosslinking and antibacterial agent.

scholarly journals Characterization of Carboxymethyl Cellulose Films Incorporated with Chinese Fir Essential Oil and Their Application to Quality Improvement of Shine Muscat Grape

Coatings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 97
Author(s):  
Luyu Mei ◽  
Liuxin Shi ◽  
Xiuli Song ◽  
Su Liu ◽  
Qiang Cheng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Essential Oil ◽  
Carboxymethyl Cellulose ◽  
Food Packaging ◽  
Water Solubility ◽  
Composite Films ◽  
Antimicrobial Properties ◽  
Chinese Fir ◽  
Volatile Components ◽  
Scanning Calorimetry

In this study, carboxymethyl cellulose (CMC) films containing 1%, 2%, and 3% Chinese fir essential oil (CFEO) were prepared. The mechanical, optical, physical, microstructural, thermal stability and antimicrobial properties of the films were studied. A traditional steam distillation method was applied for CFEO extraction, in which 35 volatile components were identified. The research results showed that the CMC film mixed with 1% CFEO had the highest tensile strength (TS) and elongation at break (EB), whereas the flexibility was decreased under higher concentrations of CFEO. However, the film’s degree of transparency under controlled humidity did not decrease with an increase in CFEO concentration; thus, the sensory evaluation was not adversely effect. Furthermore, the thickness and the water solubility (WS) of film increased after the addition of CFEO. The thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) results indicated that the thermal stability of the CMC-CFEO films improved. Moreover, the composite films showed excellent inhibitory effects toward Gram-positive bacterias and Penicillium citrinum. The treatments of grapes with CMC + 1% CFEO resulted in the best properties during storage. CMC-CFEO film can be a candidate for food packaging due to its excellent performances.

scholarly journals Biodegradable Rice Starch/Carboxymethyl Chitosan Films with Added Propolis Extract for Potential Use as Active Food Packaging

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 954 ◽  
Author(s):  
Rungsiri Suriyatem ◽  
Rafael Auras ◽  
Chitsiri Rachtanapun ◽  
Pornchai Rachtanapun
Keyword(s):  
Thermal Stability ◽  
Food Packaging ◽  
Radical Scavenging ◽  
Antimicrobial Properties ◽  
Carboxymethyl Chitosan ◽  
Rice Starch ◽  
Propolis Extract ◽  
Gram Positive Bacteria ◽  
Active Food Packaging ◽  
Potential Use

Active films from rice starch/carboxymethyl chitosan (RS/CMCh) incorporated with propolis extract (ppl) were developed and characterized. The effect of the ppl content (0–10% w/w based on RS/CMCh) on the developed films’ properties were determined by measuring the optical, mechanical, thermal, swelling, barrier, antimicrobial, and antioxidant attributes. The thermal stability and biodegradability of the films were also investigated. As the ppl content increased, free radical scavenging and a* and b* color values increased, whereas luminosity (L*) and swellability of the films decreased. The active films with 5–10% ppl possessed antimicrobial ability against Gram-positive bacteria (Staphylococcus aureus and Bacillus cereus). The active film with 10% ppl displayed increased flexibility and thermal stability, without a change in oxygen permeability. The results indicated that incorporation of ppl into RS/CMCh film could enhance the films’ antioxidant and antimicrobial properties.

Synthesis,Characterization, and Antibacterial Activity of Quaternized of N-Aromatic Chitosan Derivatives

2011 ◽  
Vol 138-139 ◽  
pp. 1202-1208 ◽  
Author(s):  
Yong Ping Han ◽  
Qiang Lin
Keyword(s):  
Antibacterial Activity ◽  
Chemical Structure ◽  
Water Solubility ◽  
Positive Charge ◽  
Inhibition Zone ◽  
Hydroxyl Group ◽  
Schiff’S Base ◽  
Chitosan Derivatives ◽  
Gram Positive Bacteria ◽  
Chemical Structures

The quaternized of N-aryl chitosan (CTS) derivatives containing different aromatic moieties were synthesized by two steps, N-aromatic Schiff and the quaternization. The chemical structures of all chitosan derivatives, N-vanillin Schiff’s base chitosan (NVCh), N-cinnamaldehyde Schiff’s base chitosan (NCCh), N-benzaldehyde Schiff’s base CTS (NBCh), and their quaternized of N-aromatic CTS derivatives were characterized by ATR-FTIR. The water solubility of the N-aromatic Schiff’s base CTS derivatives had very poor water solubility. But after quaternized, the water solubility of CTS derivatives was obviously improved. The antibacterial studies of these CTS derivatives were carried out by the inhibition zone diameters methods against E.coli (Gram-negative), S.aurueus and P.aeruginosa (Gram-positive) bacteria, and against V.Aspergillus niger (fungal). It was found that the quaternized NVSCTS showed higher antibacterial activity than quaternized NCCh and quaternized NVBCh at the almost same DQ and ES level. In comparison to each of the chemical structure, it was found that the phenol hydroxyl group effect on antibacterial activity was even higher than that of positive charge density of CTS.

scholarly journals Active Polypropylene-Based Films Incorporating Combined Antioxidants and Antimicrobials: Preparation and Characterization

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 722
Author(s):  
Seyed Hadi Peighambardoust ◽  
Seyedeh Homa Fasihnia ◽  
Seyed Jamaleddin Peighambardoust ◽  
Mirian Pateiro ◽  
Rubén Domínguez ◽  
...  
Keyword(s):  
Food Packaging ◽  
Antimicrobial Agents ◽  
Radical Scavenging ◽  
Antimicrobial Properties ◽  
Butylated Hydroxytoluene ◽  
Bacteria Growth ◽  
Gram Positive Bacteria ◽  
Uniform Dispersion ◽  
Physical Mixing ◽  
The Fourier Transform

Development of polypropylene (PP) films incorporating antioxidant-antimicrobial agents can inhibit microbial growth and reduce undesirable deteriorating reactions and can preserve the quality of food. This study was aimed to use a combination of sorbic acid (SA), butylated hydroxyanisole (BHA), and butylated hydroxytoluene (BHT) to provide a synergistic effect at their reduced concentrations. A Combination of the additives was more effective in enhancing mechanical properties compared to their single state in film composition. The PP-2%SA-3%BHA film (T3) had the highest tensile strength (17.9 MPa) and the lowest elongation at break (7.1%) than other films. The fourier-transform infrared (FTIR) proposed physical mixing of active additives within PP-matrix. Scanning electron microscopy showed uniform dispersion of the additives in PP-2%SA-1%BHT-1%BHA film (T4) compared to others. BHT containing films decreased the storage and loss moduli leading to weakening of film viscoelastic behaviour and reducing film melting point. The prepared active films showed higher antioxidant activity than control PP-film following an order of T4 > T2 > T3 corresponding to DPPH radical scavenging values of 89.1, 83.4 and 79.1%, respectively. All active films inhibited gram-negative and gram-positive bacteria growth. The results of this study indicated that the prepared active films possess desirable mechanical, thermal, antioxidant and antimicrobial properties enabling their use in food packaging.

scholarly journals Novel Bovine Plasma Protein Film Reinforced with Nanofibrillated Cellulose Fiber as Edible Food Packaging Material

Membranes ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 31
Author(s):  
Shihan Weng ◽  
Sara Sáez-Orviz ◽  
Ismael Marcet ◽  
Manuel Rendueles ◽  
Mario Díaz
Keyword(s):  
Water Vapor ◽  
Food Packaging ◽  
Water Solubility ◽  
Antimicrobial Properties ◽  
Nanofibrillated Cellulose ◽  
Edible Films ◽  
Light Transmittance ◽  
Vapor Permeability ◽  
Protein Film ◽  
Bovine Plasma

Proteins, such as those in blood from slaughterhouses, are a good option for developing edible films. However, films made exclusively from proteins have low strength and high water solubility, which makes them difficult to use in the food industry. The use of cellulosic material, such as nanofibrillated cellulose (NFC), can improve the properties of these films. In the present work, bovine plasma was acidified and treated with ethanol to precipitate its proteins, and these proteins were used to prepare films reinforced with several concentrations of NFC. In addition, control films prepared with untreated bovine plasma and reinforced with NFC were prepared as well. These new edible films were characterized according to their mechanical properties, water vapor permeability, light transmittance, and microstructure. Furthermore, the film with the best properties was selected to be additivated with nisin to test its antimicrobial properties by wrapping meat previously contaminated with Staphylococcus aureus. In this sense, films prepared with the extracted proteins showed better properties than the films prepared with untreated plasma. In addition, the results showed that the reinforcement of the films with a 10% (w/w) of NFC decreased their water solubility and improved their puncture strength and water vapor barrier properties. Finally, the addition of nisin to the films prepared with extracted protein from bovine plasma and NFC gave them antimicrobial properties against S. aureus.

scholarly journals EFFECTS OF CHITOSAN COATING ON THE PHYSICAL, MECHANICAL AND ANTIMICROBIAL PROPERTIES OF FOOD PACKAGING PAPER

2020 ◽  
Vol 21 (2) ◽  
pp. 62 ◽  
Author(s):  
Kurnia Wiji Prasetiyo ◽  
Deni Zulfiana ◽  
Sita Heris Anita ◽  
Widya Fatriasari ◽  
Lisman Suryanegara ◽  
...  
Keyword(s):  
Food Packaging ◽  
Antimicrobial Properties ◽  
Tensile Modulus ◽  
Edible Films ◽  
Empty Fruit Bunches ◽  
Gram Positive Bacteria ◽  
Chitosan Coating ◽  
Safety And Health ◽  
Chitosan Content ◽  
Packaging Paper

EFFECTS OF CHITOSAN COATING ON THE PHYSICAL, MECHANICAL AND ANTIMICROBIAL PROPERTIES OF FOOD PACKAGING PAPER. The coating process on food packaging paper is carried out to improve the food safety and health aspect from dangerous substance migration from food packaging into food. Chitosan has attracted interest in packaging, especially in food packaging as edible films and coatings. A paper from oil palm empty fruit bunches (OPEFB) pulp was coated with chitosan using different pulp weight (1, 1.5, 2 g) and chitosan content (0.25, 0.50, 0.75, 1 g) as parameters. The effect of chitosan as coating material on physical, mechanical, and antimicrobial properties was studied. The results showed that the density and grammage values of the paper increased after coating due to the increasing of chitosan content. The mechanical properties of the coated paper, such as tensile strength, tensile modulus and elongation, improved in line with the increase of chitosan content and pulp weight. The addition of chitosan on paper imparts antimicrobial properties against Gram-positive bacteria (Staphylococcus aureus) and Gram- negative bacteria (Escherichia coli).

scholarly journals Antimicrobial and cytotoxic activity of Alnus glutinosa (L.) Gaertn., A. incana (L.) Moench, and A. viridis (Chaix) DC. extracts

2016 ◽  
Vol 6 (2) ◽  
pp. 100-104 ◽  
Author(s):  
Sabina Dahija ◽  
Sanin Haverić ◽  
Jasmina Čakar ◽  
Adisa Parić
Keyword(s):  
Cell Viability ◽  
Antimicrobial Properties ◽  
Inhibition Zone ◽  
Alnus Glutinosa ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Blue Dye ◽  
Cytotoxic Activities ◽  
Gram Positive Bacteria ◽  
Low Levels

Introduction: The objective of the present study was to evaluate the antimicrobial and cytotoxic activities of water extracts of leaves and barks from Alnus glutinosa (L.) Gaertn., A. incana (L.) Moench, and A. viridis (Chaix) DC.Methods: The antimicrobial activities of extracts were tested against gram-negative and gram-positive bacteria as well as yeast strains by the agar diffusion method. The cell viability was determined by the Trypan blue dye exclusion method.Results: The largest diameters of inhibition zone (DIZ) were recorded with Staphylococcus aureus ATCC 6538 and Bacillus subtilis 168M. The highest percentage of cell viability was observed with water bark extracts of A. glutinosa (97.46%).Conclusions: Potential antimicrobial properties of A. glutinosa, A. incana, and A. viridis demonstrated in this study, as well as their low levels of toxicity, make them an interesting subject for further studies.

scholarly journals Preparation and characterization of corn starch/PVA/glycerol composite films incorporated with ε-polylysine as a novel antimicrobial packaging material

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 154-161 ◽  
Author(s):  
Gao Yurong ◽  
Li Dapeng
Keyword(s):  
Water Solubility ◽  
Corn Starch ◽  
Composite Films ◽  
Antimicrobial Properties ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
Packaging Material ◽  
Hydroxyl Group ◽  
Electron Microscopic ◽  
Antimicrobial Packaging

AbstractCorn starch/polyvinyl alcohol (PVA)/glycerol composite films incorporated with ε-polylysine were prepared, and their properties were investigated. The Fourier-transform infrared (FTIR) spectroscopy indicated that the interactions happened between the amino group of ε-polylysine and hydroxyl group starch/PVA composite films. X-ray diffraction (XRD) analysis showed that the addition of ε-polylysine decreased the intensity of all crystal peaks. Thermogravimetric (TGA) analysis suggested that ε-polylysine improved the thermal stability of composite films. Scanning electron microscopic (SEM) analysis showed that the upper surface of composite films incorporated with ε-polylysine presented more compact and flat surface. The antimicrobial activity of the composite film progressively increased with the increasing of ε-polylysine concentration (P < 0.05). The tensile strength, elongation at break and water absorption significantly increased, whereas water solubility decreased with the increasing of ε-polylysine concentration (P < 0.05). Therefore, the corn starch/PVA/glycerol composite films incorporated with ε-polylysine had good mechanical, physical and antimicrobial properties and could have potential application as a novel antimicrobial packaging material.

scholarly journals Characterization of Food Packaging Films with Blackcurrant Fruit Waste as a Source of Antioxidant and Color Sensing Intelligent Material

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2569
Author(s):  
Mia Kurek ◽  
Nasreddine Benbettaieb ◽  
Mario Ščetar ◽  
Eliot Chaudy ◽  
Maja Repajić ◽  
...  
Keyword(s):  
Food Packaging ◽  
Water Solubility ◽  
Color Change ◽  
Chitosan Film ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Color Changes ◽  
Insoluble Particles ◽  
Polymer Stability ◽  
Food Packaging Films

Chitosan and pectin films were enriched with blackcurrant pomace powder (10 and 20% (w/w)), as bio-based material, to minimize food production losses and to increase the functional properties of produced films aimed at food coatings and wrappers. Water vapor permeability of active films increased up to 25%, moisture content for 27% in pectin-based ones, but water solubility was not significantly modified. Mechanical properties (tensile strength, elongation at break and Young’s modulus) were mainly decreased due to the residual insoluble particles present in blackcurrant waste. FTIR analysis showed no significant changes between the film samples. The degradation temperatures, determined by DSC, were reduced by 18 °C for chitosan-based samples and of 32 °C lower for the pectin-based samples with blackcurrant powder, indicating a disturbance in polymer stability. The antioxidant activity of active films was increased up to 30-fold. Lightness and redness of dry films significantly changed depending on the polymer type. Significant color changes, especially in chitosan film formulations, were observed after exposure to different pH buffers. This effect is further explored in formulations that were used as color change indicators for intelligent biopackaging.

scholarly journals Sputter-Deposited Ag Nanoparticles on Electrospun PCL Scaffolds: Morphology, Wettability and Antibacterial Activity

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 345
Author(s):  
Daniele Valerini ◽  
Loredana Tammaro ◽  
Roberta Vitali ◽  
Gloria Guillot ◽  
Antonio Rinaldi
Keyword(s):  
Ag Nanoparticles ◽  
Food Packaging ◽  
Antimicrobial Agents ◽  
Antimicrobial Properties ◽  
Deposition Process ◽  
Polymer Fibers ◽  
Antibacterial Action ◽  
Porous Scaffolds ◽  
Electrospinning Technique ◽  
Sputtering Deposition

Porous scaffolds made of biocompatible and environmental-friendly polymer fibers with diameters in the nano/micro range can find applications in a wide variety of sectors, spanning from the biomedical field to textiles and so on. Their development has received a boost in the last decades thanks to advances in the production methods, such as the electrospinning technique. Conferring antimicrobial properties to these fibrous structures is a primary requirement for many of their applications, but the addition of antimicrobial agents by wet methods can present a series of drawbacks. In this work, strong antibacterial action is successfully provided to electrospun polycaprolactone (PCL) scaffolds by silver (Ag) addition through a simple and flexible way, namely the sputtering deposition of silver onto the PCL fibers. SEM-EDS analyses demonstrate that the polymer fibers get coated by Ag nanoparticles without undergoing any alteration of their morphological integrity upon the deposition process. The influence on wettability is evaluated with polar (water) and non-polar (diiodomethane) liquids, evidencing that this coating method allows preserving the hydrophobic character of the PCL polymer. Excellent antibacterial action (reduction > 99.995% in 4 h) is demonstrated against Escherichia coli. The easy fabrication of these PCL-Ag mats can be applicable to the production of biomedical devices, bioremediation and antifouling systems in filtration, personal protective equipment (PPE), food packaging materials, etc.

Sign in / Sign up

Export Citation Format

Share Document