Physical properties and antioxidant activity of gelatin-sodium alginate edible films with tea polyphenols

2018 ◽  
Vol 118 ◽  
pp. 1377-1383 ◽  
Author(s):  
Lixue Dou ◽  
Bafang Li ◽  
Kai Zhang ◽  
Xin Chu ◽  
Hu Hou
Keyword(s):  
Antioxidant Activity ◽  
Physical Properties ◽  
Sodium Alginate ◽  
Edible Films ◽  
Tea Polyphenols

scholarly journals Influence of vegetable oils addition on the selected physical properties of apple–sodium alginate edible films

2019 ◽  
Vol 77 (2) ◽  
pp. 883-900 ◽  
Author(s):  
Justyna Kadzińska ◽  
Joanna Bryś ◽  
Ewa Ostrowska-Ligęza ◽  
Manon Estéve ◽  
Monika Janowicz
Keyword(s):  
Physical Properties ◽  
Sodium Alginate ◽  
Vegetable Oils ◽  
Edible Films

Development and characterization of sodium alginate based active edible films incorporated with essential oils of some medicinal plants

2020 ◽  
Vol 145 ◽  
pp. 124-132 ◽  
Author(s):  
Zineb Mahcene ◽  
Aminata Khelil ◽  
Sara Hasni ◽  
Perihan Kubra Akman ◽  
Fatih Bozkurt ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Essential Oils ◽  
Sodium Alginate ◽  
Edible Films

Physical Properties of Gelatin Films Plasticized with Glycerol, Studied by Spectroscopic Methods

2010 ◽  
Vol 636-637 ◽  
pp. 753-758 ◽  
Author(s):  
P. Bergo ◽  
R.A. Carvalho ◽  
A.C.S. Vadala ◽  
V.C.I. Guevara ◽  
P.J.A. Sobral
Keyword(s):  
Infrared Spectroscopy ◽  
Physical Properties ◽  
Silica Gel ◽  
Edible Films ◽  
Polymeric Matrix ◽  
Glycerol Content ◽  
Flexible Films ◽  
Gelatin Films ◽  
Hydrophilic Nature ◽  
New Interactions

The effect of glycerol content on the physical properties of gelatin-based edible films was studied in this work, on the basis of the interactions between the plasticizer and polymeric matrix. In this work, some non-usual techniques were used to characterize edible films. For dielectric measurements and infrared spectroscopy, these films were conditioned in silica gel in order to minimize the water effect. For other analysis, the films were conditioned in NaBr. Infrared spectroscopy showed no apparent changes in the position peaks, suggesting an absence of new interactions between the plasticizer and film matrix. It seems that the plasticizers only occupy some specific regions between the polymeric matrix, increasing their distance, and thus, affecting their mobility, which results in more flexible films. Dielectric constant of the films increased with plasticizer content, and decreased over silica gel conditioning. The polarizability was found to arise mainly from water molecules present in the film. Microwave response was found to be also sensitive to water content in the films, due to plasticizer hydrophilic nature. According to the diffractograms, gelatin films presented essentially an amorphous nature, independently of the glycerol content. The results suggest, therefore, that the glycerol induces no chemical modifications in the films.

scholarly journals Mechanical and Physical Properties of Pea Starch Edible Films in the Presence of Glycerol

2016 ◽  
Vol 40 (6) ◽  
pp. 1339-1351 ◽  
Author(s):  
Bahareh Saberi ◽  
Quan V. Vuong ◽  
Suwimol Chockchaisawasdee ◽  
John B. Golding ◽  
Christopher J. Scarlett ◽  
...  
Keyword(s):  
Physical Properties ◽  
Edible Films ◽  
Mechanical And Physical Properties ◽  
Pea Starch

Chemical composition and physical properties of coffee (Coffea robusta) bee pollen in Daklak province, Vietnam

2021 ◽  
Author(s):  
L.P.T. Quoc
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Physical Properties ◽  
Nutritional Value ◽  
Dry Weight ◽  
Protective Capacity ◽  
Bee Pollen ◽  
Pellet Morphology ◽  
Colour Parameters ◽  
Coffea Robusta

AbstractThe main purpose of this study was to determine the chemical composition of monofloral bee-collected pollen from the coffee (Coffea robusta) plant and its pellet morphology. According to the results coffee bee pollen (CBP) has a high nutritional value. It contains a large percentage of protein, reducing sugar, and lipid. Also, vitamins (B2 and E) and minerals (K, Ca, and P) were found in CBP. In addition, the results revealed that the total polyphenols content (TPC) was 10.62 mg GAE/g dry weight (DW) and antioxidant activity (AA) of CBP was 5.52 μmol TE/g DW. Some physical properties of CBP pellet were recorded such as moisture, relative diameter, sphericity, bulk density, and colour parameters. The pollen pellet exhibits shapes of colour from light to dark yellow. These results pointed out that CBP can be used as a remarkable source of compounds with antioxidant activity and health-protective capacity for humans.

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