Scientific journal

59 2020

Journal of Food and Nutrition Research
Summary No. 3 / 2020

Bulut, S. – Popović, S. – Hromiš, N. – Šuput, D. – Lazić, V. – Kocić-Tanackov, S. – Dimić, G. – Kravić, S.
Antibacterial activity of biopolymer composite materials obtained from pumpkin oil cake and winter savory or basil essential oil against various pathogenic bacteria
Journal of Food and Nutrition Research, 59, 2020, No. 3, s. 250-258

Sandra Bulut, Department of Food Preservation Engineering, Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia. Tel.: +38121/4853702, e-mail: sbulut@uns.ac.rs

Received 25 May 2020; 1st revised 14 July 2020; accepted 11 August 2020; published online 1 September 2020.

Summary: Pumpkin oil cake, a by-product obtained after oil extraction from pumpkin seed, possesses good film-forming properties, as well as the ability to be used as a matrix for various compounds in order to obtain active biopolymer materials. Use of essential oils, as active components with a pronounced activity, can be a good alternative to synthetic chemical compounds. In the present work, composite pumpkin oil cake-based films with winter savory or basil essential oil were developed and their antibacterial activity against two Gram-negative bacteria (E. coli, S. Enteritidis) and three Gram-positive bacteria (L. monocytogenes, Staph. aureus and B. cereus) was analysed. Gas chromatographic - mass spectrometric analysis confirmed the main phenolic compounds to be carvacrol in winter savory essential oil and linalool in basil essential oil. Pumpkin oil cake film without essential oils did not show antibacterial activity against any of the tested bacteria, while films with basil essential oil showed some antibacterial activity against L. monocytogenes and B. cereus. However, films with winter savory essential oil showed antibacterial activity in all added concentrations against all 5 bacteria. Addition of winter savory and basil essential oils into pumpkin oil cake-based film enhanced its antibacterial activity, demonstrating its possible application as an active composite material.

Keywords: biopolymer composite material; pumpkin oil cake; winter savory essential oil; basil essential oil; pathogenic bacteria; antibacterial activity

Download:
  (pdf, 313.84 Kb, 765x)