Effect of Nonthermal Processing on Human Milk Bactericidal Activity Against Escherichia coli. Issue 6 (June 2020)

• Record Type: Journal Article
• Authors: Barbarska, Olga; Strom, Kamila; Oledzka, Gabriela; Calvo, Javier; Gayà, Antoni; López-Mendoza, María Carmen; Rutkowska, Malgorzata; Rosiak, Elzbieta; Wesolowska, Aleksandra Maria
• Is Part Of: Journal of pediatric gastroenterology and nutrition. Volume 70:Issue 6(2020)
• Publication Date: 2020-06
• Subjects: high-pressure processing -- holder pasteurization -- human milk bank -- pascalization -- ultraviolet-C irradiation; Children -- Nutrition -- Periodicals; Pediatric gastroenterology -- Periodicals; Infants -- Nutrition -- Periodicals; Nutrition disorders in children -- Periodicals; Child Nutrition -- Periodicals; Digestive System -- growth & development -- Periodicals; Gastrointestinal Diseases -- Periodicals; Infant Nutrition -- Periodicals; Nutrition Disorders -- Periodicals; Child; 618.923
• DOI: 10.1097/MPG.0000000000002673
• Languages: English
• ISSNs: 0277-2116

Abstract

Abstract : ABSTRACT: Nonthermal methods are more efficient at preserving various biological properties of human milk, as compared with holder pasteurization (HoP), which is the most common preservation method. This study was performed to assess the effects of nonthermal processing on bactericidal activity against Escherichia coli in human milk. Milk samples obtained from the Regional Human Milk Bank in Warsaw at Holy Family Hospital were processed by HoP, irradiated with ultraviolet-C (UV-C) for 5, 10, and 15 minutes (6720 J/L each minute), subjected to 2 variations of high-pressure processing (HPP): 450 MPa for 15 minutes and 200 MPa for 10 minutes + 400 MPa for 10 min, with a 10-minutes break. The samples were then evaluated by a bactericidal assay (raw untreated human milk was used as a control). The bactericidal capacity after HoP was preserved in 12.1% of samples, showing a significant reduction in bactericidal properties compared with in raw milk ( P < 0.05). The differences between samples preserved by nonthermal methods and raw milk were not significant ( P > 0.05). Nonthermal methods of human milk treatment better preserve the bactericidal capacity compared with holder pasteurisation. Those alternative technologies to HoP can be proposed after further investigation for milk processing for Human Milk Banks facilities.