Antibacterial activity of plasma-treated polypropylene membrane functionalized with living Carnobacterium divergens in cold-smoked salmon. (July 2022)

• Record Type: Journal Article
• Authors: Xuan Nguyen, Ngoc Thanh; Daniel, Philippe; Pilard, Jean-François; Cariou, Ronan; Gigout, Frédérique; Leroi, Françoise
• Is Part Of: Food control. Volume 137(2022)
• Publication Date: 2022-07
• Subjects: Bacteriocin -- Polypropylene membrane -- Plasma -- Carnobacterium divergens -- Listeria monocytogenes -- Cold-smoked salmon; Food -- Quality -- Periodicals; Food -- Analysis -- Periodicals; Food handling -- Periodicals; Food industry and trade -- Quality control -- Periodicals; Aliments -- Industrie et commerce -- Qualité -- Contrôle -- Périodiques; Aliments -- Qualité -- Périodiques; Aliments -- Analyse -- Périodiques; Hygiène alimentaire -- Périodiques; Food -- Analysis; Food handling; Food -- Quality; Periodicals; Electronic journals; 664.07
• DOI: 10.1016/j.foodcont.2022.108903
• Languages: English
• ISSNs: 0956-7135

Abstract

Abstract: In recent years, bacteriocins produced by lactic acid bacteria (LAB) have shown great potential for food safety preservation, especially for ready-to-eat products. In this study, bio-protective membrane was made from plasma-treated polypropylene film and functionalized with Carnobacterium divergens V41 (bacteriocin-producing strain) for the purpose of inhibiting Listeria monocytogenes growth in culture media and cold-smoked salmon (CSS) at refrigerated temperatures. In semi solid Brain Heart Infusion (BHI) agar, bio-protective plastic membrane led to a 3-Log reduction in L. monocytogenes count compared to the control, after 14 days of aerobic incubation at 8 °C. In vacuum-packed CSS, L. monocytogenes growth was inhibited by bio-protective plastic membrane after 7 days of storage at 4 °C and 21 days at 8 °C. Antilisterial activity of plastic membrane was even better than C. divergens cells added in CSS by direct spraying. Stability test has shown that bio-protective plastic membrane stored for 42 days at 4 °C still exerted antimicrobial activity against L. monocytogenes on BHI agar (2-Log reduction compared to the control). These preliminary results demonstrate that bio-protective plastic membrane can be used to control pathogenic bacteria in food products with potential industrial development. Highlights: ● Modification of polypropylene surface by plasma treatment in order to fix bioprotective Carnobacterium divergens bacteria. ● Antilisterial activity of bio-protective plastic film tested in BHI and smoked salmon. ● Assessment of stability of bio-protective polypropylene film in BHI over storage time. ● Potentiality of development of a new active food packaging