scholarly journals Development of Intelligent Food Packaging from Turmeric (Curcuma longa)

2019 ◽  
Vol 9 (1) ◽  
pp. 5624-5630
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Tensile Strength ◽  
Food Packaging ◽  
Room Temperature ◽  
Curcuma Longa ◽  
Color Difference ◽  
Biological Properties ◽  
Physical Structure ◽  
Ph Sensing

In this study, intelligent food packaging in the forms of film and coating were developed based on starch, chitosan and curcumin extracted from turmeric. Solution casting method was applied to develop the film. Both of the film and coating were evaluated and compared by their chemical, physical and biological properties. The film was evaluated in terms of tensile strength measurement, FTIR spectroscopy, antioxidant activity and antimicrobial activity as well as color difference parameters after application on the strawberry. The results obtained showed that the film has a tensile strength of 1.37 MPa, elongation at break of 18.9%, antioxidant activity of 95.65% and high antimicrobial activity as the film had successfully delayed the formation of mould on the strawberry after 5 days of storage. In addition, the stability of both film and coating were evaluated based on their applications on strawberries at two different conditions which are at room temperature and chiller temperature during 5 days storage to identify their potential use as intelligent food packaging. After 5 days, it was found that the film at room temperature had been partially degraded and the coating had caused colour degradation and texture deterioration of the strawberry. In contrast, the film and coating stored at chiller temperature remained the same in terms of physical structure and able to monitor and extend the shelf life of the strawberry. For the evaluation of the film as pH sensing film, the colour of the film changed after 5 days from 53.46 to 48.92 for L*, 26.01 to 22.68 for a* and 42.49 to 44.65 for b* at chiller temperature, while at room temperature, the values of L* changed from 53.96 to 48.96, 25.54 to 20.36 for a* and 46.34 to 44.10 for b*. These showed that the film was able to monitor the freshness of the strawberry by changing its colour in respond to pH changes of the strawberry. The results obtained revealed that both of the film and coating have a greater stability at chiller temperature as compared to storage at room temperature and both have a strong antioxidant activity and strong antimicrobial activity that they delayed the spoilage of the strawberries. Therefore, the film and coating based on starch, chitosan and curcumin can be used to monitor freshness of refrigerated food and have the potential to be used as intelligent food packaging

scholarly journals Basil Essential Oil: Composition, Antimicrobial Properties, and Microencapsulation to Produce Active Chitosan Films for Food Packaging

Foods ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 121
Author(s):  
Ghita Amor ◽  
Mohammed Sabbah ◽  
Lucia Caputo ◽  
Mohamed Idbella ◽  
Vincenzo De Feo ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Shelf Life ◽  
Food Packaging ◽  
Antimicrobial Properties ◽  
Edible Films ◽  
Biological Properties ◽  
Oil Composition ◽  
Packaging System ◽  
Cooked Ham

The essential oil (EO) from basil—Ocimum basilicum—was characterized, microencapsulated by vibration technology, and used to prepare a new type of packaging system designed to extend the food shelf life. The basil essential oil (BEO) chemical composition and antimicrobial activity were analyzed, as well as the morphological and biological properties of the derived BEO microcapsules (BEOMC). Analysis of BEO by gas chromatography demonstrated that the main component was linalool, whereas the study of its antimicrobial activity showed a significant inhibitory effect against all the microorganisms tested, mostly Gram-positive bacteria. Moreover, the prepared BEOMC showed a spheroidal shape and retained the EO antimicrobial activity. Finally, chitosan-based edible films were produced, grafted with BEOMC, and characterized for their physicochemical and biological properties. Since their effective antimicrobial activity was demonstrated, these films were tested as packaging system by wrapping cooked ham samples during 10 days of storage, with the aim of their possible use to extend the shelf life of the product. It was demonstrated that the obtained active film can both control the bacterial growth of the cooked ham and markedly inhibit the pH increase of the packaged food.

scholarly journals Thymus mastichina: Composition and Biological Properties with a Focus on Antimicrobial Activity

2020 ◽  
Vol 13 (12) ◽  
pp. 479
Author(s):  
Márcio Rodrigues ◽  
Ana Clara Lopes ◽  
Filipa Vaz ◽  
Melanie Filipe ◽  
Gilberto Alves ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Essential Oil ◽  
Biological Activities ◽  
Scientific Information ◽  
Biological Properties ◽  
Fusarium Spp ◽  
Candida Spp ◽  
Pharmaceutical Industries

Thymus mastichina has the appearance of a semishrub and can be found in jungles and rocky lands of the Iberian Peninsula. This work aimed to review and gather available scientific information on the composition and biological properties of T. mastichina. The main constituents of T. mastichina essential oil are 1,8-cineole (or eucalyptol) and linalool, while the extracts are characterized by the presence of flavonoids, phenolic acids, and terpenes. The essential oil and extracts of T. mastichina have demonstrated a wide diversity of biological activities. They showed antibacterial activity against several bacteria such as Escherichia coli, Proteus mirabilis, Salmonella subsp., methicillin-resistant and methicillin-sensitive Staphylococcus aureus, Listeria monocytogenes EGD, Bacillus cereus, and Pseudomonas, among others, and antifungal activity against Candida spp. and Fusarium spp. Additionally, it has antioxidant activity, which has been evaluated through different methods. Furthermore, other activities have also been studied, such as anticancer, antiviral, insecticidal, repellent, anti-Alzheimer, and anti-inflammatory activity. In conclusion, considering the biological activities reported for the essential oil and extracts of T. mastichina, its potential as a preservative agent could be explored to be used in the food, cosmetic, or pharmaceutical industries.

scholarly journals Development of Intelligent Food Packaging from Red Cabbage Anthocyanin Pigment

2019 ◽  
Vol 8 (4) ◽  
pp. 6798-6802
Keyword(s):  
Food Packaging ◽  
Room Temperature ◽  
Corn Starch ◽  
Color Stability ◽  
Biological Properties ◽  
Ph Indicator ◽  
Red Cabbage ◽  
Color Changes ◽  
Cooling Effects ◽  
Cabbage Extract

Corn starch, chitosan and red cabbage extract act as natural pH indicator to determine fruit spoilage by developing pH sensitive film and coating as the color changes based on pH of fruit. The film color changed from pink to purple and brownish with the changes of pH. pH indicator film and coating were assessed for their physical, chemical, mechanical and biological properties. The stability of the pigment was evaluated for 4 days with the presence and absence of light and with or without cooling effects. The film incorporated with red cabbage extract proven to have higher stability when stored at room temperature with the exposure to light. It also exhibits better color stability when kept under cold temperature in comparison to room temperature.

scholarly journals Magnetic Properties and Biological Activity Evaluation of Iron Oxide Nanoparticles

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Alina Mihaela Prodan ◽  
Simona Liliana Iconaru ◽  
Carmen Mariana Chifiriuc ◽  
Coralia Bleotu ◽  
Carmen Steluta Ciobanu ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Room Temperature ◽  
Aqueous Suspension ◽  
Hysteresis Loops ◽  
Biological Properties ◽  
Oxide Nanoparticles ◽  
Metallic Ions ◽  
Tem Analysis

The aim of this study was to provide information about the biological properties of iron oxide nanoparticles (IO-NPs) obtained in an aqueous suspension. The IO-NPs were characterized by transmission electron microscopy (TEM). Analysis of hysteresis loops data at room temperature for magnetic IO-NPs sample indicated that the IO-NPs were superparamagnetic at room temperature. The calculated saturation magnetization for magnetic iron oxide wasMs= 18.1 emu/g. The antimicrobial activity of the obtained PMC-NPs was tested against Gram-negative (Pseudomonas aeruginosa1397,Escherichia coliATCC 25922), Gram-positive (Enterococcus faecalisATCC 29212,Bacillus subtilisIC 12488) bacterial as well as fungal (Candida krusei963) strains. The obtained results suggested that the antimicrobial activity of IO-NPs is dependent on the metallic ions concentrations and on the microbial growth state, either planktonic or adherent. The obtained IO-NPs exhibited no cytotoxic effect on HeLa cells at the active antimicrobial concentrations.

Advances on Monosaccharides and Oligosaccharides: Structural Modifications and Bioactivities

2021 ◽  
Vol 21 ◽  
Author(s):  
Shaochen Li ◽  
Min Lv ◽  
Shaoyong Zhang ◽  
Hui Xu
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Biological Activities ◽  
Building Blocks ◽  
Biological Properties ◽  
Mechanisms Of Action ◽  
Biological Processes ◽  
Structural Modifications ◽  
Structure Activity ◽  
Derivatives Of

: Derivatives of monosaccharides and oligosaccharides play the important roles in biological processes. Monosaccharides are the single carbohydrate building blocks, such as glucose, xylose, and fructose. Oligosaccharides are composed of 2–10 monosaccharides including disaccharides and trisaccharides. Moreover, monosaccharides, oligosaccharides and their derivatives are vital molecules with various biological properties including anticancer activity, antiviral activity, insecticidal activity, antimicrobial activity, and antioxidant activity. This review covers a survey of structural modifications, biological activities, and mechanisms of action of monosaccharides, oligosaccharides and their derivatives. Additionally, their structure–activity relationships are also concluded.

Cholesterol: Bioactivities, Structural Modification, Mechanisms of Action, and Structure-Activity Relationships

2021 ◽  
Vol 21 ◽  
Author(s):  
Kong Zhang ◽  
Tianze Li ◽  
Xijie Shan ◽  
Rongfei Lu ◽  
Shaoyong Zhang ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Anticancer Activity ◽  
Structural Modification ◽  
Biological Properties ◽  
Mechanisms Of Action ◽  
Inflammatory Activity ◽  
Anti Psychotic ◽  
Structure Activity Relationships ◽  
Structure Activity

: Cholesterol, a steroid alcohol, was discovered by M.E. Chevreul in 1815. Cholesterol and its derivatives showed a large variety of biological properties such as anticancer activity, anticardiac activity, anti-inflammatory activity, antimicrobial activity, anti-psychotic activity, antioxidant activity, drug-loaded activity, etc. In this mini-review, the advances of structural modification of cholesterol from 2014 to 2020 were summarized. In addition, the bioactivities, mechanisms of action and structure-activity relationships of cholesterol and its related derivatives were involved.

scholarly journals Antimicrobial Activities of Starch-Based Biopolymers and Biocomposites Incorporated with Plant Essential Oils: A Review

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2403 ◽  
Author(s):  
R. Syafiq ◽  
S. M. Sapuan ◽  
M. Y. M. Zuhri ◽  
R. A. Ilyas ◽  
A. Nazrin ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Tensile Strength ◽  
Essential Oil ◽  
Essential Oils ◽  
Food Packaging ◽  
Barrier Properties ◽  
Antimicrobial Activities ◽  
Food Storage ◽  
Plant Essential Oils ◽  
Bacteria And Fungi

Recently, many scientists and polymer engineers have been working on eco-friendly materials for starch-based food packaging purposes, which are based on biopolymers, due to the health and environmental issues caused by the non-biodegradable food packaging. However, to maintain food freshness and quality, it is necessary to choose the correct materials and packaging technologies. On the other hand, the starch-based film’s biggest flaws are high permeability to water vapor transfer and the ease of spoilage by bacteria and fungi. One of the several possibilities that are being extensively studied is the incorporation of essential oils (EOs) into the packaging material. The EOs used in food packaging films actively prevent inhibition of bacteria and fungi and have a positive effect on food storage. This work intended to present their mechanical and barrier properties, as well as the antimicrobial activity of anti-microbacterial agent reinforced starch composites for extending product shelf life. A better inhibition of zone of antimicrobial activity was observed with higher content of essential oil. Besides that, the mechanical properties of starch-based polymer was slightly decreased for tensile strength as the increasing of essential oil while elongation at break was increased. The increasing of essential oil would cause the reduction of the cohesion forces of polymer chain, creating heterogeneous matrix and subsequently lowering the tensile strength and increasing the elongation (E%) of the films. The present review demonstrated that the use of essential oil represents an interesting alternative for the production of active packaging and for the development of eco-friendly technologies.

scholarly journals Preparation of pH-Indicative and Flame-Retardant Nanocomposite Films for Smart Packaging Applications

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5462
Author(s):  
Nedal Abu-Thabit ◽  
Abbas Saeed Hakeem ◽  
Khaled Mezghani ◽  
Elaref Ratemi ◽  
Mohamed Elzagheid ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Consumer Satisfaction ◽  
Food Packaging ◽  
Color Change ◽  
Fire Retardant ◽  
Storage Period ◽  
Color Difference ◽  
Nanocomposite Films ◽  
Ph Sensing ◽  
Alternative Choice

There is an increasing demand for sustainable and safe packaging technologies to improve consumer satisfaction, reduce food loss during storage and transportation, and track the quality status of food throughout its distribution. This study reports the fabrication of colorimetric pH-indicative and flame-retardant nanocomposite films (NCFs) based on polyvinyl alcohol (PVA) and nanoclays for smart and safe food packaging applications. Tough, flexible, and transparent NCFs were obtained using 15% nanoclay loading (PVA-15) with superior properties, including low solubility/swelling in water and high thermal stability with flame-retardant behavior. The NCFs showed average mechanical properties that are comparable to commercial films for packaging applications. The color parameters were recorded at different pH values and the prepared NCFs showed distinctive colorimetric pH-responsive behavior during the transition from acidic to alkaline medium with high values for the calculated color difference (∆E ≈ 50). The prepared NCFs provided an effective way to detect the spoilage of the shrimp samples via monitoring the color change of the NCFs during the storage period. The current study proposes the prepared NCFs as renewable candidates for smart food packaging featuring colorimetric pH-sensing for monitoring food freshness as well as a safer alternative choice for applications that demand films with fire-retardant properties.

scholarly journals Wound Healing Activity of Alcoholic Extract of Tamarix Aphylla L. on Animal Models

2019 ◽  
Vol 12 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Sajid Ali ◽  
Sarfaraz Alam ◽  
Sarfaraz Ahmad ◽  
Maksood Ali ◽  
Waquar Ahsan ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Wound Healing ◽  
Tensile Strength ◽  
Ethanolic Extract ◽  
Activity Period ◽  
Tissue Homogenate ◽  
Alcoholic Extract ◽  
Standard Drug ◽  
Wound Healing Activity

To evaluate the wound healing activity of ethanolic extract of Tamarix aphylla L. on animal model. Wound creation like circular excision and linear incision method were considered for this study. The various parameters were studied like DNA estimation, total protein estimation, estimation of Hexosamine and Uronic acid, estimation of lipid peroxides and antioxidant activity, Tensile Strength of tissues from incision wounds, Antioxidant activity, Antimicrobial activity, Period of epithelialization and finally TNF-a concentration in the wound tissue homogenate were estimated. The treatment groups with the extract showed significant antimicrobial activity with compare to the standard drug. Significantly, 93. 86% increase in the collagen content and significant 52% up regulation in tensile strength was observed in the treated group. 40% reduction was observed in epithelialization period of the treated wounds. The results of the current study confirm that the ethanolic extract of T. aphylla has potent wound healing capacity.

Fish Gelatin Antimicrobial Electrospun Nanofibers for Active Food-Packaging Applications

2019 ◽  
Vol 56 ◽  
pp. 80-97 ◽  
Author(s):  
Esen Alp-Erbay ◽  
Ahmet Faruk Yeşi̇lsu ◽  
Mustafa Türe
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Tensile Strength ◽  
Food Packaging ◽  
Electrospun Nanofibers ◽  
Active Packaging ◽  
Diffusion Method ◽  
Fish Gelatin ◽  
Fiber Morphology ◽  
Active Food Packaging

A protein-based electrospun nanofiber from cold water fish gelatin (FG) including bovine lactoferrin (L) as an antimicrobial substance for food packaging applications was developed. Various amounts of L (0, 5, 10, 15, and 20%) were incorporated into FG electrospun nanofibers in order to test antimicrobial activity by disc diffusion method against Pseudomonas fluorescens, Acinetobacter johnsonii, Aeromonas hydrophila, Flavobacterium psychrophilum, Shewanella putrefaciens, and Escherichia coli commonly cause problems in food safety especially in fish products. It was obviously seen that 15% and 20% wt L incorporated FG electrospun nanofibers had significant inhibition zone against all bacterial strains while 5% and 10% L-FG had lower antimicrobial effects. In order to recommend fish gelatin as a food packaging material, mechanical properties should be enhanced to be competitive with synthetic polymers. It was revealed that mechanical strength of gelatin electrospun nanofibers depended on both fiber morphology and bioactive substance content. Neat FG (N-FG ) bead-free electrospun mats had higher fiber diameter (815 ±40 nm) while 15% and 20% L-FG had relatively lower diameter with beaded morphology, i.e., 348 ±32 nm, 229 ± 44 nm respectively. The tensile strength of 20% L-FG mats was significantly lower than the N-FG mats due to beady and thinner morphology. It can be concluded that L-FG electrospun nanofibers with high antimicrobial activity and improvable tensile strength is promising for active packaging applications.Keywords: Electrospinning, Pseudomonas spp., Escherichia coli, Shewanella spp., biodegradable, active packaging

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