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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →A Purdue University study reported that a rapid, low-temperature treatment added after pasteurization could extend milk’s shelf life by weeks. The process was designed for industrial use, and the reported results do not mean consumers can treat milk at home or change the date on a carton.
What was the process?
In a 2016 report, Purdue described a low-temperature, short-time (LTST) treatment used as an add-on to conventional pasteurization. The pasteurized milk was dispersed into droplets and passed through a heated, pressurized chamber. Its temperature changed rapidly but remained below 70°C. The process is an industrial treatment, not a kitchen technique. Purdue University’s report describes the method and study.
As Purdue associate professor Bruce Applegate put it: “It’s an add-on to pasteurization, but it can add shelf life of up to five, six or seven weeks to cold milk.” That statement refers to the research-stage process, not a shelf-life guarantee for milk sold today.
What did the study find?
Purdue reported that the LTST treatment extended shelf life in its experimental conditions to as long as 63 days. The report’s comparisons included periods of 14 to 35 days, and it described conventional pasteurization as providing around two to three weeks. These are results and context from that report, not dates consumers should apply to their own milk.
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![The Schlueter Company Home Milk Pasteurizer [115V]](https://m.media-amazon.com/images/I/41pOepgjhOL._SL160_.jpg)
- Pour goat's or cow's milk into 2-gallon canister, pour water into outer chamber, plug in and wait for buzzer
- In about 25 minutes you'll have safe, pasteurized milk
- Note: These items are intended for home use only, not commercial
- Canister lifts out for easy cleaning. Use to store and serve milk, too. Dishwasher-safe.
- Just plug it in. One-year warranty. 1250W, 14"Hx 10"dia, 9 lb.
The report also said the brief temperature increase eliminated more than 99% of bacteria left after pasteurization. Its reproduced study abstract described reductions of up to 5 log10 CFU/mL from pasteurization and 7–8 log10 CFU/mL after LTST for the same microorganisms. The study included inoculated milk and specific test organisms; these figures do not establish that the process removes every pathogen or guarantees safety for all products and production lines. Sensory preference in the study was equal to or greater than that for milk treated with pasteurization alone, but that finding likewise applies to the study conditions. Purdue’s 2016 report summarizes the results.
How is LTST different from milk already sold?
LTST should not be confused with extended-shelf-life (ESL), ultra-pasteurized or UHT milk. Those are separate commercial processing approaches. Their exact treatments and handling directions vary by product.
Rank #2
- 【Main Features】:Kolice Commercial Milk Pasteurization Machine, countertop design. 110V 60Hz, 1000W, US plug. Compact dimensions: 17.32''x18.5''x17.32'' (44x47x44cm), net weight: 55 lbs (25kg). auto washing function. Packaged in a sturdy plywood case
- 【Efficient Sterilization】:14L capacity with sterilization temperature ranging from 60°C to 85°C (140°F to 185°F). Each batch completes sterilization within 40 minutes. Notice: Heating function only, without refrigeration function. The temperature is adjustable.But can not hold temperature. For example, it will stop heating once it reaches the setting temperature. If milk is left inside the machine without any operation, the milk temperature will drop naturally.
- 【Food grade Material】:Constructed with food-grade stainless steel tank for durability, corrosion resistance, and easy cleaning. equipped with a 360° stirring leaf and an acrylic visible cover for monitoring the process
- 【Versatile Applications】:Perfect for pasteurizing fresh milk, juice, sauce, coffee, beer and other liquid foods
- 【Wide Usage Scenarios】:Widely use for milk bars, pastures, restaurants, ice cream shops, farms, school, canteen and similar establishments
| Milk or process | What it means | What to keep in mind |
|---|---|---|
| Conventional pasteurized milk | Standard pasteurization. Purdue’s 2016 report described around two to three weeks as contextual shelf-life information. | Follow the package directions and keep it refrigerated. |
| LTST add-on in the Purdue study | Rapid treatment of dispersed pasteurized milk droplets, with the reported process below 70°C. | The reported microbial reductions and shelf-life extension were experimental results; the sources cited here do not establish that a retail product uses this exact process. |
| ESL or ultra-pasteurized milk | Commercial processing between conventional HTST and UHT approaches; specific processes vary. | Canadian guidance says ESL products are not commercially sterile and require prompt cooling and continuous refrigeration at 4°C or below. Follow the package directions. |
| UHT milk | More intense heat processing associated with unopened milk that can be shelf-stable in aseptic packaging. | Do not assume it has the handling needs of refrigerated ESL milk; follow the package directions. |
The Canadian Food Inspection Agency’s ESL guidance and a peer-reviewed review of thermal processing for ESL milk describe the distinctions. The evidence supports comparing processing and storage requirements, not declaring one method universally best.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should consumers do with milk at home?
Do not try to reproduce LTST at home or use the study’s figures to extend a carton’s date. Keep milk according to its label and maintain a refrigerator at 40°F or below, as USDA Food Safety and Inspection Service (FSIS) advises. FSIS says perishable food held above 40°F for more than two hours should not be consumed. USDA FSIS refrigeration guidance explains the temperature limits.
Rank #3
- 【Compact & Durable Construction】:Wtecom pasteurization machine crafted from food-grade stainless steel for hygiene and durability. 17.32''x18.5''x17.32'' (44x47x44cm), net weight: 55 lbs (25kg)—compact enough for tight counters, powerful yield for daily use.
- 【Efficiency Sterilization & Pasteurization】This commercial pasteurizer machine is available to heat the liquids such as milk, juice, ice cream mix, etc. from 60°C–85°C (140°F–185°F) in 30-40 minutes per batch, to be sure safety, bacteria-free food processing. Ideal for dairy, beverages, and sauces.
- 【Easy & Convenient To Use】 Free operation with auto wash and timer to reduce manual effort. The detachable stainless steel shaft and stirring paddle make deep cleaning simple .Easy for future maintenance.
- 【Perfectly Food Grade Stainless steel Tank】The tank is made of high-quality food grade stainless steel material - durable, corrosion-resistant, and easy to clean.Full transparent acrylic upper cover door,you can check and view inside the tank mixing when the machine running, allow you to make timely adjustments.
- 【Wide Usage Scenarios】:Widely use for milk bars, pastures, restaurants, ice cream shops, farms, school, canteen and similar establishments.
Smell, taste and appearance cannot prove that mishandled milk is safe: pathogenic bacteria may not change a food’s sensory qualities. If milk has been held outside safe temperature limits, do not rely on a sensory check to decide whether to drink it. USDA FSIS distinguishes food-safety hazards from spoilage signs.
Quick Recap
Best Value
- [ Machine Details ] - Kolice Commercial Dairy Thermal Processing Unit, 220V 60HZ, single phase, heating power: 18kw(9kw+9kw), cooling power: 2.25kw, capacity: 200L, machine dimension: 57.09''x37.4''x56.3'' (145x95x143cm), packing form: 1 unit/1 plywood, equipped with both heating and cooling functions, constructed from food grade stainless steel with double layers design, built-in tank stirring system, real-time temperature display on control panel and customizable temperature limit via manual setting
- [ Premium Design & Function ] - This thermal processing unit features double-layer construction. Fill water into the interlayer via the water inlet connected to regular tap water pipeline before operation. It supports real-time temperature reading and manual temperature adjustment on control panel, 2-speed control to match different heat processing durations. Internal tank stirring delivers uniform full-tank heat circulation, paired with dual submerged heating elements. Built-in overheat protection with alert, plus working indicators for heating and stirring. Max adjustable temperature: 210.2 °F (99 ℃), recommended optimal working temperature: 185 °F (85 ℃)
- [ Premium Material ] - This commercial thermal processing equipment is built with food grade stainless steel. Outer shell adopts seamless brushed stainless steel for sleek and solid structure, featuring sturdy build, long service lifespan and simple daily maintenance & cleaning
- [ Application ] - Suitable for farms, schools, nursing facilities, ice cream parlors, restaurants, hotels and other commercial venues. Designed for controlled thermal processing of cow, goat, sheep, camel, buffalo milk and plant-based milk such as almond, coconut, soy and wheat milk; also compatible with juice, beer, coffee, sauces and ice cream base. Ideal to produce yogurt, sour cream, cheese and assorted fresh beverages for household and commercial production
- [ How to Install the Machine ] - Professional installation following seller’s instructions is suggested. This high-power commercial processing device is not pre-installed with power plug; we advise hardwiring to dedicated circuit breaker for safe electricity connection. A bottom water inlet is available for direct connection to municipal tap water pipeline
Rank #4
- Commercial Countertop 13LPasteurization Machine Size:17.2"*18.5"*17.32(44*47*44cm),Power: 110V, 60HZ , Cylinder: 13L, power: 1000W, US plug.Sterilizing with Timer and Temperature control range: 60 ~ 85 °C, Material: Food grade 304 stainless steel
- Pasteurizer Come With Plug.Machine go with plug ,you don't need to wire it ,just plug it and use.
- Efficient Sterilization: 360°stirring leaf, directional sterilization technology, Corrosion resistance, easy to clean and no leakage
- Acrylic Visable Cover: Stable and reliable control performance guarantee. Countertop design, Easy to operate, the table shows more accurate
- Applications: This milk pasteurizer is suitable for Processing Milk,Juices,Beer,Syrups and other Liquid Foods. Widely used in drink shops, restaurants, pastures, farms, milk bars, etc
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