Dear researchers,
I want to add alpha-tocopherol to chitosan film forming solution to prepare chitosan film with alpha-tocopherol. First I added tween 80 as an emulsifier to chitosan film-forming solution(2%) at concentrations of 50, 75 and 100 percent of alpha-tocopherol that then was added to chitosan film forming solution at different concentrations of 0.1, 0.125, 0.15 and 0.2 percent of the solution. Then, it was homogenized with ultra turax at 13000 and 27000 rpm and dried in petri dishes at oven( 30 D. of celsius). Unfortunately, all prepared films showed greasy surface and non-uniform structure. Can any researcher help me how can I prepare a better film with uniform structure?
Hi,
I suggest you to refer the following links. Just have a read.
https://repositorium.sdum.uminho.pt/bitstream/1822/16817/1/science.pdf
http://www.sciencedirect.com/science/article/pii/S0308814614003628
You may wish to reconsider the concentration of alpha-tocopherols and work with lower levels.
Best wishes,
Rohit
i think you may try some agent like glycerin it will help you
you may read my paper"""Enhancing the keeping quality of fresh strawberry using chitosan-
incorporated olive processing wastes"
I have added glycerin to all films as plasticizer but the problem has not solved.
sometimes during homogenization air bubbles add into film which results in non uniform surface... have you checked that?
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