Human milk storage conditions and bactericidal activity: An experimental study
Journal of Parenteral and Enteral Nutrition, cilt.50, sa.5, ss.693-700, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 50 Sayı: 5
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/jpen.70096
- Dergi Adı: Journal of Parenteral and Enteral Nutrition
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, CINAHL, EMBASE, MEDLINE, Health Research Premium Collection (ProQuest), Pharma Collection (ProQuest)
- Sayfa Sayıları: ss.693-700
- Anahtar Kelimeler: bacteria, bactericidal activity, breast milk, newborn
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Objective: Breast milk is crucial for neonatal nutrition and provides antimicrobial protection. While breastfeeding for at least 6 months is ideal, situations may arise where stored milk is necessary. This study examines how storage in polyethylene bags and Pyrex bottles affects breast milk's antimicrobial effectiveness against common neonatal pathogens: Escherichia coli, Staphylococcus aureus, and Streptococcus agalactiae. Materials and Methods: Conducted from December 15, 2023, to March 15, 2024, the prospective study involved 30 term infants and their mothers, aged 18–40, at Gülhane Training and Research Hospital. Milk was manually expressed into both container types and stored at 4°C for 0, 24, and 48 h. Bactericidal activity was evaluated using standard strains of E. coli, S. aureus, and S. agalactiae, with colony counts analyzed after 24 h of cultivation. Results: No significant differences were found between storage types for overall colony counts. However, S. agalactiae showed a significant increase in colonies at 48 h in Pyrex bottles (p = 0.003), while S. aureus colonies increased significantly in polyethylene bags at 48 h (p = 0.036). Conclusion: Bactericidal activity against S. agalactiae and S. aureus decreased significantly in stored milk after 24 and 48 h in the refrigerator. Short-term storage of human milk may compromise its antimicrobial properties depending on bacterial strain and container type, indicating the need for further research on optimal storage conditions.