EMAN RESEARCH PUBLISHING | Journal | <p>Pasteurization of Milk through Direct Heating up to 75°C over Kitchen Stove at Home</p>
Microbial and anti-microbial compound biology
RESEARCH ARTICLE   (Open Access)

Pasteurization of Milk through Direct Heating up to 75°C over Kitchen Stove at Home

Sheikh Ariful Hoque a, Ummay Nasrin Sultana a, Tania Hossain a

+ Author Affiliations

Microbial Bioactives 1(1) 001-007 https://doi.org/10.25163/microbbioacts.11001A0616250318

Submitted: 06 February 2018  Published: 25 March 2018 

heating milk on a kitchen stove up to 65°C-75°C has been shown quick, cost-effective, an energy-saving in-home pasteurization technique to produce safe and nourishing milk with increased shelf life.

Abstract


Pasteurization remains an important process that makes milk safe from pathogens and increases milk’s shelf life without altering the taste and the nutritional value. But, still many people drink unpasteurized milk either because people do not know how to pasteurize the raw milk at home, or because they prefer minimally processed food. Herein, we demonstrated that once the temperature of milk raised to 65°C through simply heating over a kitchen stove can produce pasteurized quality of milk by reducing the total number of bacteria within the limit (<20,000 CFU.mL-1) of U.S. Grade “A” Pasteurized Milk Ordinance, killing pathogens like coliforms, E. coli, Vibrio, Salmonella, Lactobacillus spp., Pseudomonas and Staphylococcus aureus etc., inactivating milk’s endogenous heat-resistant alkaline phosphatase (ALP), and extending milk’s shelf life similar to pasteurized milk. However, heating milk up to 75°C showed greater effectiveness in killing pathogens than that of standard pasteurization (62.5°C for 30 min). Importantly, the key nutritional elements of milk including total protein, lipid, lactose, vitamin B2 and calcium remained protected even at 75°C. Thus, simply heating milk on a kitchen stove up to 65°C-75°C has been shown quick, cost-effective, an energy-saving in-home pasteurization technique to produce safe and nourishing milk with increased shelf life.

Keywords: In-home Pasteurization; Kitchen stove; Milk-borne Pathogens; Alkaline phosphatase; Milk’s nutrients; Shelf life.

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