Development, Characterisation of Novel Edible and Biodegradable Composite Films Produced from Casting of Mango (Mangifera indica) Puree, Gelatin and Defatted Soy Protein

Author(s):  
Sreedath Tulamandi ◽  
Visvanathan Rangaraju ◽  
Thangavel Kulanthaisamy ◽  
Syed SH Rizvi ◽  
Carmen I Moraru ◽  
...  
e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 433-442
Author(s):  
Hua He ◽  
Rui-jing Jia ◽  
Kai-qiang Dong ◽  
Jia-wen Huang ◽  
Zhi-yong Qin

Abstract A novel biodegradable protein-based material (UMSPIE) that consists of natural polymer soy protein isolate (SPI), ultrasonic-modified montmorillonite (UMMT), and ethylene glycol diglycidyl ether (EGDE) was produced by solution casting. Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), and scanning electron microscopy (SEM) were used to characterize the chemical structure and micro-morphologies of as-synthesized protein-based composite films. The results showed that the interlayer structure of MMT was destroyed by ultrasonic treatment, and the hydrogen bonding between SPI chains and the ultrasound-treated MMT plates was enhanced. The synergistic effect of UMMT and EGDE on SPI molecules made the network structure of the UMSPIE film denser. In addition, the mechanical and barrier properties of the as-synthesized films were explored. Compared with pure soy protein film, the tensile strength of the UMSPIE film has an increase of 266.82% (increasing from 4.4 to 16.14 MPa). From the above, the modified strategy of layered silicates filling combining crosslinking agents is considered as an effective method to improve the functional properties of bio-based polymer composites.


2018 ◽  
Vol 121 ◽  
pp. 66-72 ◽  
Author(s):  
Caio G. Otoni ◽  
Beatriz D. Lodi ◽  
Marcos V. Lorevice ◽  
Renato C. Leitão ◽  
Marcos D. Ferreira ◽  
...  

2012 ◽  
Vol 75 (12) ◽  
pp. 2234-2237 ◽  
Author(s):  
WEILI LI ◽  
LINSHU LIU ◽  
TONY Z. JIN

We evaluated the effects of storage and handling conditions on the antimicrobial activity of biodegradable composite films (polylactic acid and sugar beet pulp) coated with allyl isothiocyanate (AIT). Polylactic acid and chitosan were incorporated with AIT and used to coat one side of the film. The films were subjected to different storage conditions (storage time, storage temperature, and packed or unpacked) and handling conditions (washing, abrasion, and air blowing), and the antimicrobial activity of the films against Salmonella Stanley in tryptic soy broth was determined. The films (8.16 μl of AIT per cm2 of surface area) significantly (P < 0.05) inhibited the growth of Salmonella during 24 h of incubation at 22°C, while the populations of Salmonella in controls increased from ca. 4 to over 8 log CFU/ml, indicating a minimum inactivation of 4 log CFU/ml on films in comparison to the growth on controls. Statistical analyses indicated that storage time, storage temperature, and surface abrasion affected the antimicrobial activity of the films significantly (P < 0.05). However, the differences in microbial reduction between those conditions were less than 0.5 log cycle. The results suggest that the films' antimicrobial properties are stable under practical storage and handling conditions and that these antimicrobial films have potential applications in food packaging.


2011 ◽  
Vol 233-235 ◽  
pp. 1726-1729
Author(s):  
Chun Guang Li ◽  
Rui Zhang ◽  
Yun Xia Li ◽  
Peng Fei Xu ◽  
Yan Qiu Wang

The biodegradable composite films were prepared from corn stalk microcrystalline cellulose as filler and polylactic acid (PLA) as polymeric matrix. The crystallinity, the tensile properties and the thermal properties of the composites were tested. The results show that the tensile properties and thermal properties were improved with the addition of corn stalk microcrystalline cellulose. When corn stalk microcrystalline cellulose account for 10% of the PLA quality, the initial decomposition temperature was raised by 34.38, tensile strength increased by 58.3% and elongation at break increased by 31.1% compared to those of pure PLA.


2010 ◽  
Vol 100 (1) ◽  
pp. 133-138 ◽  
Author(s):  
F. María Monedero ◽  
Alicia Hambleton ◽  
Pau Talens ◽  
Fréderic Debeaufort ◽  
Amparo Chiralt ◽  
...  

2011 ◽  
Vol 1 ◽  
pp. 240-245 ◽  
Author(s):  
Vítor D. Alves ◽  
Rocío Castelló ◽  
Ana Rita Ferreira ◽  
Nuno Costa ◽  
Isabel M. Fonseca ◽  
...  

Foods ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Zainal Nur Hanani ◽  
Eddie Beatty ◽  
Yrjo Roos ◽  
Mick Morris ◽  
Joseph Kerry

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