Page 37 - Book of Abstracts

th
8 Biannual Conference on Chemistry - CHEM 08

Xanthan/CMC Binary System Activated with Frankincense
Oil for Tomato Active Packaging

Maher A. Khattab*, Hend E. Salama, Mohamed S. Abdel Aziz, Magdy
W. Sabaa
Department of Chemistry, Faculty of Science, Cairo University.

ABSTRACT

Novel edible system of xanthan (Xa) and carboxymethyl cellulose (CMC)
activated with different contents with frankincense oil (FO) was prepared.

FTIR confirmed the successful interaction between CMC, Xa and FO.
Wide-angle X-ray diffraction showed that the addition of FO decreased
the crystallinity of the amorphous structure of CMC/Xa. TGA showed that

the samples were thermally stable at higher temperatures as detected from
the calculated integral procedure decomposition temperature (IPDT)
values from their TGA curves. Water vapour permeability was

significantly reduced while the samples colour were not changed after FO
addition. The samples exhibited a significant improvement in the
mechanical and antimicrobial properties in the presence of FO. Some

preliminary studies showed that the shelf-life of tomatoes was
significantly extended after coating with the prepared samples when
compared with the uncoated tomatoes. These results confirm that
CMC/Xa/FO edible coating might be used potentially as a promising

candidate in food preservation industries.

Keywords: Edible coating; Frankincense oil; Shelf-life; Xanthan;
Carboxymethyl cellulose.

BOOK OF ABSTRACTS CHEM 08 (2020) Page 36