Assessing the influence of far UV-C (222 nm) and UV-C (254 nm) treatment on the physicochemical and microbial properties of milk in an annular flow reactor DOI Creative Commons

Vigyan Gadodia,

Kiran Ahlawat,

Ambar Ish

et al.

AIP Advances, Journal Year: 2025, Volume and Issue: 15(2)

Published: Feb. 1, 2025

The quest for alternatives to traditional cold chain preservation and heat-based shelf-life extension has become increasingly important in recent years. As a result, investigation into the effects of ultraviolet (UV) radiation on physicochemical properties various substances, including milk, gained significant attention. UV-C light, particular, is recognized its effectiveness inactivating wide range bacteria spores aqueous solutions. This work aims design continuous annular UV reactor milk treatment examine impacts milk’s microbial characteristics compare these outcomes those achieved through conventional pasteurization methods. For same, 11 W lamp (254 nm) an house designed 17.5 far (222 have been used. key parameters, such as pH, conductivity, temperature, fat/solid not fat, load, are assessed. dosage supplied samples determined using actinometry measured be 6.16 J/ml. methylene blue reduction test increases up more than 5 h, with just four passes reactor. Approximately log reductions Salmonella typhimurium Staphylococcus aureus three (residence time 24.3 s) whole milk. results obtained compared technique. We found that proposed identical performance micro-organisms without altering physico-chemical properties. suggests possibility utilizing sources improve safety, quality, shelf life. study expands scope applications irradiation feasible non-thermal method dairy industry.

Language: Английский

Assessing the influence of far UV-C (222 nm) and UV-C (254 nm) treatment on the physicochemical and microbial properties of milk in an annular flow reactor DOI Creative Commons

Vigyan Gadodia,

Kiran Ahlawat,

Ambar Ish

et al.

AIP Advances, Journal Year: 2025, Volume and Issue: 15(2)

Published: Feb. 1, 2025

The quest for alternatives to traditional cold chain preservation and heat-based shelf-life extension has become increasingly important in recent years. As a result, investigation into the effects of ultraviolet (UV) radiation on physicochemical properties various substances, including milk, gained significant attention. UV-C light, particular, is recognized its effectiveness inactivating wide range bacteria spores aqueous solutions. This work aims design continuous annular UV reactor milk treatment examine impacts milk’s microbial characteristics compare these outcomes those achieved through conventional pasteurization methods. For same, 11 W lamp (254 nm) an house designed 17.5 far (222 have been used. key parameters, such as pH, conductivity, temperature, fat/solid not fat, load, are assessed. dosage supplied samples determined using actinometry measured be 6.16 J/ml. methylene blue reduction test increases up more than 5 h, with just four passes reactor. Approximately log reductions Salmonella typhimurium Staphylococcus aureus three (residence time 24.3 s) whole milk. results obtained compared technique. We found that proposed identical performance micro-organisms without altering physico-chemical properties. suggests possibility utilizing sources improve safety, quality, shelf life. study expands scope applications irradiation feasible non-thermal method dairy industry.

Language: Английский

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