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Ensuring milk, yoghurt, cheese and other produce are at the correct temperature is critical in the dairy industry in order to minimize waste. Milk chillers work to eliminate excess heat at important milestones throughout its production, such as the pasteurization process.
It is a heat treatment process that removes dangerous bacteria, allowing the produce to be stored for much longer periods. To do so, the milk must be heated to up to 212 Fahrenheit to stop the bacteria from duplicating. It then requires fast cooling in order to stop the produce from being damaged.
Integral to this process are dairy chillers, as they are able to bring the temperature of the milk down enough to preserve it as it is transported to be bottled.
What is the pasteurization process?
Temperature plays an important role in creating dairy produce that is safe for human consumption. During the process, milk is passed through a range of cold and hot temperatures in order to kill off dangerous pathogens, as well as to preserve proteins and nutrients.
There are two different pasteurization methods that are utilized in the global dairy industry. These are:
- High Temperature, Short Time (HTST) – This method is used in the United States and Canada. It works by heating milk up to 161 Fahrenheit for 15 seconds in order to kill off any harmful pathogens and take away unwanted enzymes. Then the milk is process cooled very quickly down to 39 Fahrenheit in order to preserve the desired enzymes and to stop the dangerous pathogens from coming back. The finished produce needs to be kept refrigerated and has a 2 week shelf life.
- Ultra High Temperature (UHT) – This method is used in Europe. It works by heating milk up to 280 Fahrenheit for 2 seconds in order to kill off any harmful pathogens and take away unwanted enzymes. Then the milk is process cooled, whilst being sealed air tight, down to 39 Fahrenheit in order to preserve the desired enzymes and to stop the dangerous pathogens from coming back. The finished produce does not need to be kept refrigerated and has a shelf life of between 6 – 9 months. However, it does sometimes have a slight ‘cooked’ flavor to it.
What dairy cooling solutions are available?
A dairy chiller is vital in the controlling of heat. If the milk gets too hot it is spoilt. This is the same for cheese also. However, if it does not get enough heat it prevents the pasteurization process from working optimally.
To help with this there are a number of solutions available within the dairy industry – which you can learn more about here: https://northslopechillers.com/process-cooling/dairy/. These include storage tanks with jackets and process chillers. Within the dairy industry, coolant is required to draw the heat from out of the milk in order to drop the temperature to the necessary level.
Type of dairy chillers
When inspecting the type of chillers that can be used for dairy produce there are two main categories. These are:
- Vapor compression – The most common type and include both water chillers and air chillers. They use an electric driven mechanism to push a refrigerant through the system.
- Vapor absorption – They use heat to push a refrigerant around the system.
As stated, vapor compression chillers are the most common types used within the dairy industry and are placed into two sub category type. These are:
- Water chillers – They work by removing heat through the pumping of water, or another fluid, through a condenser and dispersing it through a cooling tower. These chillers are more efficient than air cooled chillers. Thanks to water’s high heat capacity, the process of using water evaporation to dissipate heat is far more energy efficient than blowing cool air across a hot surface. Traditionally, these chillers last longer than air chillers as well.
- Air chillers – They work by using air to get rid of the heat. Fans blast cool air across the tubes of the condenser to cool it down. This method is much less energy efficient than the water cooling method. These chillers are ideal for when it comes to static cooling. They are very easy to install and can even be installed on the outside of a building, saving space on the inside. However, they are more likely to experience issues with recirculation and blockages than water chillers.
Despite the stated differences, the two types of chillers are actually made up of the same components, which include an expansion valve, an evaporator, a compressor, and a condenser. The mechanics of the two chiller types are also extremely similar.
The compressor starts the refrigeration cycle and begins so by pushing the refrigerant through to the condenser. During this process the low temperature and low pressure refrigerant is compressed and changed into a high temperature and high pressure gas. Whilst in the condenser air or water flows over the coils to remove any heat from the refrigerant. The refrigerant condenses at this point as it loses heat and turns into a liquid form. After leaving the condenser, the refrigerant goes through the expansion valve where it is restricted. Once through the valve, the refrigerant goes into the evaporator where it then begins to evaporate back into a gas state. During this process it gets super cold and absorbs a large amount of heat. This heat is removed from the fluid and transferred in to the refrigerant. This will then enter the compressor and the entire cycle starts over again.
The types of compressors the chiller can utilize are subcategorized as the following:
- Reciprocating chillers – Use a chamber and pistons.
- Scroll compressor chillers – Utilizes one rotating plate and a stationary plate.
- Screw driven chillers – Ideal for medium to smaller loads.
- Centrifugal chillers – Mostly water chillers that utilize this.
What are the benefits of a dairy chiller solution?
An effective and robust dairy chiller solution is easy and simple to install, and will work to save time, lower operational costs, save energy and water, and most importantly improve the quality of the product.
Heinz has just rolled out a new product that the condiment company says is the "biggest innovation in sauce since the packet itself." Earlier this month, the world's largest producer of ketchup announced the Packet Roller, a ketchup bottle-shaped gadget that allows users to squeeze the most out of a condiment packet, CNN reported.
"Do not click 'purchase' unless you are prepared to change everything about the way you sauce," the Heinz Packet Roller website says. The roller goes for $5.70. The roller is pocket-sized, can be added to a keychain, and features a packet corner cutter.
Heinz has just rolled out a new product that the condiment company says is the "biggest innovation in sauce since the packet itself | Flickr
This announcement could be part of the fast-tracked, "future-focused culinary and packaging innovations" that Steve Cornell, president of Kraft Heinz's US grocery business unit, hinted at earlier this year amid a shortage of ketchup. A surge in takeout and delivery food orders during the pandemic led to a scarcity of ketchup packets, the report said.
In April, Heinz pledged to increase production of ketchup by 25 per cent to 12 billion packets annually. "Gone are the days of fumbling with ketchup packets, pants ruined by mustard disasters, and minutes taken off your life trying to get to the bottom of that mayo packet. With the patent-pending Heinz Packet Roller, what was once taxing becomes simple -- just snip and roll to squeeze out every drop of your sauce of choice," the website says
Keywords: Heinz, Packet roller, sauce, company, ketchup
Swiss tennis ace Roger Federer, who is recovering from a right-knee surgery he underwent last month, said on Sunday that it was a difficult process to decide whether to undergo a third right-knee surgery after having two last year. But following Wimbledon, where he was "really unhappy" with his performance in reaching the quarterfinals, Federer opted to go through with it.
Federer, who made a late decision to attend this year's Laver Cup in Boston -- a tournament held between teams from Europe and the rest of the world -- said on the sidelines of the event that the recovery and rehabilitation are "going to take me a few more months and then we'll see how things are at some point next year". "The reception I've received, everybody is so upbeat that I'm here. They wish me all the best and they don't even see the crutches. They just want me to be good again and enjoy the weekend," Federer said in an interview for the event with former world No. 1 Jim Courier.
"I've seen some incredible tennis, some great matches and it's been wonderful. I'm really happy I made the trip," the winner of 20 majors was quoted as saying by atptour.com. On why he opted for a third surgery, the tennis ace said, "I was just nowhere near where I wanted to be to play at the top, top level. But I tried my best and at the end... too much is too much. Now I've just got to take it step by step," Federer said.
Federer received thunderous ovations inside Boston's TD Garden, where he has often been sitting in the front row watching the action or behind the scenes visiting with the players. | Wikimedia Commons
"I've got to first walk again properly, run properly and then do the sidesteps and all the agility work and then eventually I've got to be back on the tennis court. But it's going to take me a few more months and then we'll see how things are at some point next year. "I've got to take my time. I don't want to rush into anything at this point. This is also for my life. I want to make sure I can do everything I want to do later on. There's no rush with anything, so I'm actually in a really good place. I think the worst is behind me. I took the time and, I don't know, I'm just really in a good place. I'm really happy."
Federer received thunderous ovations inside Boston's TD Garden, where he has often been sitting in the front row watching the action or behind the scenes visiting with the players. The former world No. 1 has played in the first three editions of the Laver Cup. "I think Boston is a great city. The stadium is wonderful, the crowds have been incredible. Both teams are stacked with absolute quality and top players," Federer said. "That's what the idea was behind it: that everybody could come together, have the most incredible weekend, learn from one another and then hopefully that's going to inspire them, motivate them and get them going for the rest of this year, next year." (IANS/ MBI)
Keywords: Roger Federer, tennish, player, sports, knee, surgery
By Hitesh Rathi
Cleopatra, was regarded as a great beauty, to preserve her skin, she took her daily bath in donkey milk. Besides, Hippocrates, the father of medicine, prescribed donkey milk for various diseases including fever, wounds, etc. To add to these benefits, donkey milk has four times the amount of Vitamin C than cow's milk has. So, it's no secret that donkey milk is a powerhouse of nutrients for both the skin and body.
Used for Anti-Ageing and Healing
The milk contains essential fatty acids that work as powerful anti-ageing and healing properties. These fatty acids blur the wrinkles on the skin and help to regenerate damaged skin. Plus, donkey milk also contains anti-bacterial properties which are effective in healing skin irritation and redness.
The milk contains essential fatty acids that work as powerful anti-ageing and healing properties.| Flickr
Antioxidant and Nutrient-Rich
Known as a "natural elixir of youth", donkey milk is packed with antioxidants and nutrients. It contains vitamin E, amino acids, vitamins A, B1, B6, C, E, Omega 3, and 6. These properties together make it a rich ingredient when it comes to skin treatment. Moreover, vitamin D is another important ingredient for human skin, and the primary source to get it is through UV exposure. At the same time, too much of that leaves an adverse effect on the skin. Here is when donkey milk acts as a great substitute as it naturally contains vitamin D. All in all, if this milk is applied frequently, it brings a glowing effect while making the skin look brighter.
Known as a "natural elixir of youth", donkey milk is packed with antioxidants and nutrients.| Photo by Jernej Graj on Unsplash
Moisturizer and Softener
By now it's a well-known fact that this milk works as a powerful moisturizer for the skin. Besides, if donkey milk is used consistently, it acts as a great cleanser as well as helps in keeping the skin healthy, hydrated, and soft.
If donkey milk is used consistently, it acts as a great cleanser as well as helps in keeping the skin healthy, hydrated, and soft. | Photo by febri sym on Unsplash
Therefore, donkey milk with its healing, nutritional and rejuvenating properties for the skin is rapidly emerging as a key ingredient for skincare. These are also driving several leading players to roll out personal care products such as soap, cream, etc. manufactured using donkey milk. Moreover, the global donkey milk market is expanding rapidly with the market value projected to reach $68,139.0 thousand by 2027, registering a CAGR of 9.4 per cent from 2021 to 2027. And the growing use of donkey milk as an ingredient in cosmetic and personal care products will significantly contribute toward the growth of this market in the years to come. (IANS/ MBI)
Keywords: Skin, donkey milk, skincare, anti-ageing, soft skin, hydrate, antioxidant, healing