Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.advisorYemenicioğlu, Ahmeten
dc.contributor.authorMecitoğlu Güçbilmez, Çiğdem-
dc.descriptionThesis (Master)--İzmir Institute of Technology, Biotechnology and Bioengineering, İzmir, 2005en
dc.descriptionIncludes bibliographical references (leaves: 88-101)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxiii, 104 leavesen
dc.description.abstractIn this study, partially purified lyophilized lysozyme (LSZ) and lactoperoxidase (LPS) from chicken egg white and bovine whey were incorporated into zein and alginate films, respectively. The LSZ showed very low affinity to zein films. Thus, when zein films incorporated with 63-455 .g/cm2 (187-1318 U/ cm2) LSZ was exposed to release tests in distilled water, the enzyme released rapidly from the films with release rates of 9 to 29 U/cm2/min. The ethanol used in film making caused significant activation of the LSZ. Therefore, the released LSZ activity from zein films was mostly 130-300 % higher than the activity incorporated into films. On the other hand, the LPS incorporated into alginate films showed a very high affinity to these films and immobilized.The incorporation of 0.53 or 1.06 mg/cm2 proteins such as crude thermally processed chick-pea proteins (TP-CP) and sericine in combination with LSZ and LPS into zein or alginate films increased the antioxidant activity of edible films significantly.In zein films, the incorporation of antioxidant proteins reduced the total activity of LSZ released from the films between 50 % and 75 %, but increased the immobilized enzyme activity 3.5-15 fold. On the other hand, incorporation of antioxidant proteins into alginate films enhanced LPS activity slightly to moderately. The results of this study clearly showed the good potential of edible films and natural biopreservatives in active packaging.en
dc.publisherİzmir Institute of Technologyen
dc.publisherIzmir Institute of Technologyen_US
dc.subject.lcshEdible coatingsen
dc.subject.lcshActive food packagingen
dc.titleProduction of functional packaging materials by use of biopreservativesen_US
dc.title.alternativeThesis (Master)--İzmir Institute of Technology: Biotechnology and Bioengineering.en
dc.typeMaster Thesisen_US
dc.departmentIzmir Institute of Technology. Biotechnology and Bioengineeringen
dc.departmentIzmir Institute of Technology. Biotechnology and Bioengineeringen_US
item.openairetypeMaster Thesis-
item.fulltextWith Fulltext-
Appears in Collections:Master Degree / Yüksek Lisans Tezleri
Files in This Item:
File Description SizeFormat 
T000356.pdfMasterThesis935.17 kBAdobe PDFThumbnail
Show simple item record

CORE Recommender

Page view(s)

checked on Oct 26, 2021


checked on Oct 26, 2021

Google ScholarTM


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.