scholarly journals Optimizing Edible Film from Corn Cobs with Surface Response Method

2021 ◽  
Vol 328 ◽  
pp. 08009
Author(s):  
Ni Ketut Sari ◽  
Adelia Hayu Regita ◽  
Dimas Wahyu Dwi Putra ◽  
Dira Ernawati ◽  
Widi Wurjani

The increase in plastic production worldwide has created quite a serious environmental problem. Edible film is an alternative packaging that can decompose naturally, one of the materials that can be used to make edible films is starch. This study aims to determine the composition of corn cob starch and plasticizers that can produce edible films with the best properties. The starch used is derived from corn cobs and the plasticizers used are glycerol and sorbitol. The edible film in this study was made by the casting method by dispersing the raw materials, heating the mixture, printing the edible film and drying the edible film. This research was conducted with variations in the corncob of 5, 6 and 7 in grams and the variation of the ratio of glycerol to sorbitol plasticizer is 2:8; 3:7; 5:5; 7:3; 8:2 (ml). The more starch content increases the thickness of the edible film and tensile strength, but the elongation and water vapor permeability decreases, the best edible film is obtained at the glycerol-sorbitol composition ratio of 5:5 with the amount of corncob starch of 7 grams.

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
R. Ramesh ◽  
Hemalatha Palanivel ◽  
S. Venkatesa Prabhu ◽  
Belachew Zegale Tizazu ◽  
Adugna Abdi Woldesemayat

Starch-based edible films are gaining huge interest in food packaging industries. In the present work, avocado seed starch (ASS) was extracted and used to develop an edible film. The influence of four important process factors, starch, agar, sorbitol, and Tween-20, was studied on one of the important barrier properties, water-vapor permeability (WP), of developed edible film. The three-level RSM design with Box–Behnken approach was carried out to investigate the film property, WP. ASS-based edible films were prepared by the casting method. The results revealed that the increment in the contents of Tween-20 and sorbitol reduces the WP of the film. Using the response surface analysis, the effect of the aforementioned factors was analyzed; they showed significant impact on WP. To predict the influence of the selected process parameters, a second-order polynomial equation was constructed. Additionally, Pareto analysis of variance was employed over the obtained results to investigate the significance of the developed process model.


2021 ◽  
Vol 22 (8) ◽  
Author(s):  
BINTI QOEROTI ◽  
Artini Pangastuti ◽  
ARI SUSILOWATI

Abstract. Qoeroti B, Pangstuti A, Susilowati A. 2021. Application of edible film incorporated with Portulaca oleracea extract to inhibit microbiological and oxidative damage in sausages. Biodiversitas 22: 3556-3561. Environmental pollution by plastic from food packaging can be reduced by applying edible film as a biodegradable casing and safe for consumption. Utilization of Indonesia's biodiversity, especially purslane plants (Portulaca oleracea L.) at Boyolali, Central Java, Indonesia as an antimicrobial compound that can improve the quality of chitosan edible films. This study aims to determine the effect of purslane extract (Portulaca oleracea L.) as an antibacterial, antifungal, and antioxidant agent in edible films in inhibiting microbiological and oxidative damage to sausages. The film was made by mixing the extract (0%; 2.5%; 5%; 10%) into the chitosan solution and sorbitol, then applied to casing the sausage. The sausage was then stored at room temperature (27°C) and in refrigerator (4°C). Sausage quality testing was carried out on days 0; 3; 6; 9; 12; 15 during storage, including determination of Total Plate Count, Yeast Mold Count, and thiobarbituric acid test. The results of tensile strength, water vapor permeability, elongation, antioxidant, FTIR film, and morphology observed by using SEM of the films with and without the purslane extract addition were different. After 15 days of storage, Kruskal-Wallis analysis also revealed that the addition of purslane extract significantly inhibited the growth of microorganisms and oxidative damage to sausages.


2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Wenjun Ma ◽  
Sami Rokayya ◽  
Liang Xu ◽  
Xiaonan Sui ◽  
Lianzhou Jiang ◽  
...  

The effect of citric acid on the properties of soybean enzyme-assisted aqueous extraction processing (EAEP) residue edible film was studied. The washed soybean EAEP residue was produced by the process of EAEP. It was determined that the washed soybean EAEP residue is rich in fibers (76.10 ± 1.03%) and has lower oil and protein contents (7.74 ± 0.11% and 3.50 ± 0.20%, resp.). Edible films intended for food packaging have been produced from the washed EAEP residue combined with glycerol, different concentrations of citric acid (0%, 10%, 15%, 20%, 25%, and 30%), and sodium hypophosphite. The spectra have evidenced that the cross-linking reaction of citric acid and fibers has taken place in the residue. 30-CA films showed the highest tensile strength (17.52 MPa) and the lowest water vapor permeability (7.21 g·cm−1·s−1·Pa−1). Also, it indicated that citric acid can cross-link with the hydroxyls of polysaccharide and improve the compatibilization between the polymeric molecules to improve the intermolecular interaction between polysaccharide molecules, so that the water uptake is reduced. The smooth surface and better translucency of the films suggest that the EAEP residue films treated with citric acid are suitable for application in food packaging.


2020 ◽  
Vol 987 ◽  
pp. 112-117
Author(s):  
Wancheng Sittikijyothin ◽  
Khanaphit Khumduang ◽  
Chularat Hongvaleerat ◽  
Rattanaphol Mongkholrattanasit

The gum edible films were prepared from Caesalpinia pulcherrima seeds. The effects of plasticizer types and contents on physical and mechanical properties of gum edible film were investigated. Three plasticizers as glycerol and sorbitol and propylene glycol at different adding concentrations (0.5%, 1.0%, and 1.5%) were used. Glycerol provided flexible and sticky films with the highest water vapour permeability and elongation at break but the lowest tensile strength. In contrast, propylene glycol provided brittle films with the highest tensile strength but the lowest elongation at break and water vapour permeability. In addition, increasing in plasticizer content resulted in decreased tensile strength concomitant with an increased in elongation at break and water vapor permeability.


2017 ◽  
Vol 6 (2) ◽  
pp. 158-167 ◽  
Author(s):  
Yuli Darni ◽  
Herti Utami ◽  
Rina Septiana ◽  
Rizka Aidila Fitriana

This study aims to compare the characteristics of mechanical and water vapor permeability of edible film based on low pectin methoxyl from cocoa skin with glycerol and sorbitol as plasticizer. In the research also added CaCO3 filler with the weight variation of 0; 0.2; and 0.4 gr. Pectin from cocoa peel was isolated by extraction use ammonium oxalic at a temperature of 85oC, pH of 3.6 for 60 minutes. An edible film synthesized at a temperature of 85oC to the agitation time of 50 minutes. 200 mesh of pectin used with the variation of glycerol and sorbitol plasticizer concentration are 1, 2 and 3% in volume. Edible films produced were dried at a temperature of 55oC for 6 hours. The results of the study obtained in 0.2 gr CaCO3 concentration and 1% glycerol of edible films has a tensile strength of 0.3267 mpa, percent elongation of 12.84%, modulus young of 2.5441 mpa, and the water vapor permeability of 4.1676 g/m2.day. While in 0.4 gr CaCO3 concentration and 1% sorbitol of edible films has a tensile strength of 6.511 mpa, percent elongation of 2.419%, modulus young of 269.119 mpa, and the water vapor permeability of 5.583 g/m2.day. Based on percent elongation characteristics, glycerol plasticizer made higher elasticity than sorbitol plasticizer. While the addition of filler able to increase tensile strength two times larger than without filler.


2014 ◽  
Vol 6 (1) ◽  
pp. 27 ◽  
Author(s):  
Desi Mustika Amaliyah

Durian (Durio zibethinus) and cempedak (Artocarpus integer) peels waste are not used by the society. The research aim is to extract pectin from durian and cempedak peels and to formulate the pectin into edible films for food packaging. The research stages were first pre-treatment of durian and cempedak peels, pectin extraction, pectin drying, and  pectin application as edible films with concentration of 0%, 5%, and 15%. Based on this research it was concluded that pectin can be extracted from durian and cempedak peels with yield result of 27.97 % and 55.58 %, respectively. Edible film obtained has  similar characteristics between raw materials cempedak and durian peels. The higher concentration of cempedak peel  pectin increased the thickness, but decreased the tensile strength and elongation at a concentration of 15%. While in edible films from durian peel pectin, the higher concentration of pectin decreased the thickness of edible film on pectin concentration of 15%, lowered tensile strength and raised the edible film elongation.Keywords: waste, durian, cempedak, pectin extraction, edible film


Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 602
Author(s):  
Carmen Rodica Pop ◽  
Teodora Emilia Coldea ◽  
Liana Claudia Salanţă ◽  
Alina Lăcrămioara Nistor ◽  
Andrei Borşa ◽  
...  

Kefiran is an exopolysaccharide classified as a heteropolysaccharide comprising glucose and galactose in equimolar quantities, and it is classified as a water-soluble glucogalactan. This work aimed to investigate the effect of different extraction conditions of kefiran on the structural and physical properties of the edible films obtained. Fourier-transform infrared spectroscopy and scanning electron microscopy were performed, together with a determinations of moisture content, solubility, water vapor permeability and degree of swelling. The kefiran films presented values of the water vapor permeability between 0.93 and 4.38 × 10−11 g/m.s.Pa. These results can be attributed to the development of a more compact structure, where glycerol had no power to increase the free volume and the water vapor diffusion through their structure. The possible conformational changes in the kefiran film structure, due to the interspersing of the plasticizers and water molecules that they absorb, could be the reason for producing flexible kefiran films in the case of using glycerol as a plasticizer at 7.5% w/w. Moreover, it was observed that the extraction conditions are a significant factor in the properties of these films and their food technology applications.


Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 769
Author(s):  
Vlad Mihalca ◽  
Andreea Diana Kerezsi ◽  
Achim Weber ◽  
Carmen Gruber-Traub ◽  
Jürgen Schmucker ◽  
...  

Food packaging is an area of interest not just for food producers or food marketing, but also for consumers who are more and more aware about the fact that food packaging has a great impact on food product quality and on the environment. The most used materials for the packaging of food are plastic, glass, metal, and paper. Still, over time edible films have become widely used for a variety of different products and different food categories such as meat products, vegetables, or dairy products. For example, proteins are excellent materials used for obtaining edible or non-edible coatings and films. The scope of this review is to overview the literature on protein utilization in food packages and edible packages, their functionalization, antioxidant, antimicrobial and antifungal activities, and economic perspectives. Different vegetable (corn, soy, mung bean, pea, grass pea, wild and Pasankalla quinoa, bitter vetch) and animal (whey, casein, keratin, collagen, gelatin, surimi, egg white) protein sources are discussed. Mechanical properties, thickness, moisture content, water vapor permeability, sensorial properties, and suitability for the environment also have a significant impact on protein-based packages utilization.


2000 ◽  
Vol 9 (1) ◽  
pp. 23-35 ◽  
Author(s):  
P. TANADA-PALMU ◽  
H. HELÉN ◽  
L. HYVÖNEN

Edible films from wheat gluten were prepared with various amounts of glycerol as a plasticizer. Water vapor permeability, oxygen permeability, tensile strength and percentage elongation at break at different water activities ( aw ) were measured. Films with low amounts of glycerol had lower water vapor and oxygen permeabilities, higher tensile strength and lower elongation at break. Wheat gluten coatings reduced weight loss during two weeks of storage for cherry tomatoes and sharon fruits compared to uncoated controls. A bilayer film of wheat gluten and beeswax significantly lowered weight loss from coated cheese cubes compared to single layer coating of wheat gluten.;


Coatings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 506 ◽  
Author(s):  
Dulce C. González Sandoval ◽  
Brenda Luna Sosa ◽  
Guillermo Cristian Guadalupe Martínez-Ávila ◽  
Humberto Rodríguez Fuentes ◽  
Victor H. Avendaño Abarca ◽  
...  

The consumption of organic products has increased in recent years. One of the most important products in Mexico is nopal. Nopal’s content and properties make the formulation of edible films possible. In this study, we aimed to develop and characterize biodegradable edible films containing mucilage from Opuntia ficus-indica. The mucilage extraction yield, thickness, color, water vapor permeability, light transmission rate, film transparency, solubility, stability of dispersion, and puncture strength were measured. The use of mucilage from different cultivars affected the water vapor permeability (8.40 × 10−11 g·m−1·s−1·Pa−1 for cultivar Villanueva, 3.48 × 10−11 g·m−1·s−1·Pa−1 for Jalpa, and 1.63 × 10−11 g·m−1·s−1·Pa−1 for Copena F1). Jalpa provided the most soluble mucilage with the highest thickness (0.105 mm). Copena F1 provided the clearest film with the greatest transparency (3.81), the best yellowness index, and the highest resistance (4.44 N·mm−1). Furthermore, this film had the best light transmission rate (48.93%). The Copena F1 showed the best film formation solution viscosity. These results indicate that mucilage mixed with pectin is a potential source for the formulation of edible films.


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