Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (123)
  • Open Access


    Conversion of Waste Parasitic Insect (Hylobius abietis L.) into Antioxidative, Antimicrobial and Biodegradable Films

    Murat Kaya1,*, Idris Sargin1, Povilas Mulerčikas2, Jalel Labidi3, Asier M. Salaberria3, Yavuz S. Cakmak1, Sonata Kazlauskaitė2, Demet Erdonmez4, Vykintas Baublys5

    Journal of Renewable Materials, Vol.7, No.3, pp. 215-226, 2019, DOI:10.32604/jrm.2019.00002

    Abstract Hylobius abietis is a plant parasitic insect belonging to the order Coleoptera and which causes severe damages to coniferous forests in Northern and Eastern Europe. This current study is aimed to provide a new viewpoint into the waste of this insect by producing chitosan. Dry insect corpses consisted of 27.9% chitin and 86.2% of the chitin was converted into the chitosan. FT-IR spectra analyses confirmed the purity and the deacetylation degree of the produced chitosan (molecular weight of chitosan; 7.3 kDa). This chitosan exhibited antimicrobial activity against 18 bacterial strains. Further, biodegradable chitosan composite films More >

  • Open Access


    Antioxidant Migration Studies in Chitosan Films Incorporated with Plant Extracts

    Victor Gomes Lauriano Souza1, Patrícia Freitas Rodrigues2, Maria Paula Duarte1, Ana Luísa Fernando1*

    Journal of Renewable Materials, Vol.6, No.5, pp. 548-558, 2018, DOI:10.7569/JRM.2018.634104

    Abstract The aim of this work was to develop an active biopolymer based on chitosan by incorporating natural antioxidants. Five essential oils (ginger, rosemary, sage, tea tree and thyme) and six hydro-alcoholic extracts (from ginger, green and black tea, kenaf leaves, rosemary and sage plants) were tested. Migration assays were carried out to evaluate the films' activity, and total phenolic content and antioxidant activity were monitored in the simulant during storage. Interaction between natural compounds and polymeric matrix was evaluated by FTIR spectroscopy. The diffusion of the phenolic compounds was not detected in the films incorporated More >

  • Open Access


    Hydroxytyrosol as Active Ingredient in Poly(vinyl alcohol) Films for Food Packaging Applications

    Elena Fortunati1*, Francesca Luzi1, Chiara Fanali2, Laura Dugo2, Maria Giovanna Belluomo2, Luigi Torre1, José Maria Kenny1, Luca Santi3, Roberta Bernini3

    Journal of Renewable Materials, Vol.5, No.2, pp. 81-95, 2017, DOI:10.7569/JRM.2016.634132

    Abstract Hydroxytyrosol (HTyr), a biophenol found in extra-virgin olive oil or olive oil by-products, well known for its strong antioxidant activity, was used as active ingredient for poly(vinyl alcohol) (PVA) matrix to develop film formulations by solvent casting process. The effect of HTyr on the morphological, thermal stability, optical, mechanical and release properties of PVA were investigated, while water absorption capacity, migration with food stimulants, water vapor permeability and antioxidant properties were tested taking into account the final application as food packaging systems. Morphological investigations evidenced homogeneity of all PVA/HTyr films, while the presence of HTyr More >

Displaying 121-130 on page 13 of 123. Per Page