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conferenceseries.com
October 27-29, 2016 Rome, Italy
15th International Conference on
Food Processing & Technology
Volume 7, Issue 12 (Suppl) J Food Process Technol 2016
ISSN: 2157-7110 JFPT, an open access journal Food Technology 2016
October 27-29, 2016
Antioxidant activity and strength properties of sumac (Rhus coriaria L) coated food contact papers
Ahsen Ezel Bildik1 and Ozlem Tokusoglu2
1Istanbul University, Turkey
2Celal Bayar University, Turkey
Paper is made from cellulose, a natural polymer and has remarkable properties. Hydrogen bonded structure gives the paper strength
against their lightweight construction and heat durability without thermal decomposition. Also, porous surface coating color
easily applies with papers. Moreover, it is shown that with natural antimicrobial or antioxidant agent coated paper extends the shelf
life of food products. Rhus coriaria L., commonly known as sumac, grows wild in the region of the Mediterranean coastline in Turkey.
Sumac has significant phenolic phytochemical constituents as tannins, flavonoids, anthocyanins, organic acids, flavones, proteins and
fiber. Total phenolic (TP) of sumac powder applied was 732 mg of gallic acid/100g while antioxidant activity as effective scavenging
concentration (EC50) on DPPH radical was 6.02μg/mL. Sumac is natural bioactive agents that suitable material for coating color
due to its anthocyanine components. Also after coating with sumac powder, several fatty products can be protective from oxidation.
In this study, wrapping paper, paper board and test liner chosen as base paper. Starch was used as a binder. Sumac was added to the
starch solution at 10% (w/w) applied on one side at 4.5 g/m². The paper was coated with #0 drawdown bar and then tested the paper
strength properties. As a result, sumac coated paper gained antioxidant activity. However; coated paper had lower strength properties
comparing to uncoated paper, but this strength lost could be relieved using wet strength agents.
Biography
Ahsen Ezel Bildik completed her bachelor, master and Ph.D. studies at Istanbul University, Faculty of Forestry, Forest Engineering Department (Istanbul). She is
currently working as researcher in Istanbul University. She is expert on packaging quality and quantity. Her specific study areas are on nutraceuticals additives of
paper making and packaging, paper surface coating applications with antimicrobial materials and corrugated board strength properties evaluation.
Ahsen Ezel Bildik et al., J Food Process Technol 2016, 7:12 (Suppl)