Enhancing Raw Bovine Milk Quality using Ultraviolet-C (UV-C) Irradiation: A Microbial and Lipid Peroxidation Study

• 발행기관: 한국축산식품학회
• 저자명: Davids Makararpong Supawan Tantayanon Chupun Gowanit Jiranij Jareonsawat Sukuma Samgnamnim Sirirat Wataradee Henk Hogeveen Chaidate Inchaisri
• 간행물 정보: 『Food Science of Animal Resources』Food Science of Animal Resources 제44권 제2호, 372~389쪽, 전체 18쪽
• 주제분류: 농수해양 > 식품과학
• 파일형태: PDF
• 발행일자: 2024.03.31

국문 초록

This study investigated the efficacy of ultraviolet-C (UV-C) irradiation in enhancing the quality of raw bovine milk by targeting microbial populations and lipid peroxidation, both of which are key factors in milk spoilage. We categorized the raw milk samples into three groups based on initial bacterial load: low (<3 Log 10 CFU/mL), medium (3–4 Log 10 CFU/mL), and high (>4 Log 10 CFU/mL). Using a 144 W thin-film UV-C reactor, we treated the milk with a flow rate of 3 L/min. We measured the bacterial count including standard plate count, coliform count, coagulase-negative staphylococci count, and lactic acid bacteria count and lipid peroxidation (via thiobarbituric acid reactive substances assay) pre- and post-treatment. Our results show that UV-C treatment significantly reduced bacterial counts, with the most notable reductions observed in high and medium initial load samples (>4 and 3–4 Log 10 CFU/mL, respectively). The treatment was particularly effective against coliforms, showing higher reduction efficiency compared to coagulase-negative staphylococci and lactic acid bacteria. Notably, lipid peroxidation in UV-C treated milk was significantly lower than in pasteurized or untreated milk, even after 72 hours. These findings demonstrate the potential of UV-C irradiation as a pre-treatment method for raw milk, offering substantial reduction in microbial content and prevention of lipid peroxidation, thereby enhancing milk quality.

목차

Introduction

Materials and Methods

Results

Discussion

Conclusion

Conflicts of Interest

Acknowledgements

Author Contributions

Ethics Approval

References

키워드

ultraviolet-C (UV-C) irradiation raw milk microbial reduction lipid peroxidation bovine milk quality