Record number :
1623794
Title of article :
Antioxidant capacity and light-aging study of HPMC films functionalized with natural plant extract
Author/Authors :
Akhtar، نويسنده , , Muhammad Javeed and Jacquot، نويسنده , , Muriel and Jasniewski، نويسنده , , Jordane and Jacquot، نويسنده , , Charlotte and Imran، نويسنده , , Muhammad and Jamshidian، نويسنده , , Majid and Paris، نويسنده , , Cédric and Desobry، نويسنده , , Stéphane، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
9
From page :
1150
To page :
1158
Abstract :
The aims of this work were to functionalize edible hydroxypropyl methylcellulose (HPMC) films with natural coloring biomolecules having antioxidant capacity and to study their photo-aging stability in the films. HPMC films containing a natural red color compound (NRC) at the level of 1, 2, 3 or 4% (v/v) were prepared by a casting method. A slight degradation of films color was observed after 20 days of continuous light exposure. The antioxidant activity of NRC incorporated films was stable during different steps of film formation and 20 days of dark storage. On the other hand, antioxidant activity of samples stored under light was significantly affected after 20 days. FTIR (Fourier Transformed Infrared) spectroscopy was used to characterize the new phenolic polymeric structures and to study the photo-degradation of films. The results showed a good polymerization phenomenon between NRC and HPMC in polymer matrix giving a natural color to the films. NRC showed an ability to protect pure HPMC films against photo-degradation. This phenomenon was directly proportional to the concentration of NRC.
Keywords :
Hydroxypropyl methylcellulose , Natural red color (betacyanins) , Biodegradable & , FTIR , Photo-aging , edible packaging , Trolox® equivalent antioxidant capacity (TEAC)
Journal title :
CARBOHYDRATE POLYMERS
Serial Year :
2012
Link To Document :
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