Tuesday, December 13, 2011

Manufacturing Juices and Other Acidic Beverages - What Pasteurization Process is Right For You?

!±8± Manufacturing Juices and Other Acidic Beverages - What Pasteurization Process is Right For You?

Ever since Louis Pasteur discovered that harmful organisms could be killed off by applying heat to wine, pasteurization has been one of the most important operations in manufacturing food, dairy, beer, juice, and all beverages. There are a number of different methods of pasteurization and it's important to understand these. I will seek to explain as clearly as possible these methods in the following few paragraphs.

Continuous VS. Batch (VAT):

Simply put, batch pasteurization involves heating a large amount (or batch) of the liquid all at once to about 145 degrees Fahrenheit for 30 minutes. It's kind of like heating water in a pot on your stove, but on a much larger scale. The temperature and hold time varies depending on the liquid's acidity. Specific guidelines are prescribed by the FDA for each industry. One very important form of pasteurization that could fall into this category is tunnel pasteurization. Tunnel pasteurization involves filling and capping the liquid into glass bottles or aluminum cans prior to pasteurization. The liquid, bottle, and cap are then heated to around 160 degrees Fahrenheit for 20 minutes or so. This process is often used by beer, tea, and energy drink companies whose flavor system can vary greatly with the amount of time their product cooks, or in the case of cans; it's the easiest way to avoid any contamination. Other than those reasons, batch pasteurization has largely been replaced by Continuous pasteurization.

Continuous pasteurization has numerous advantages over VAT pasteurization including less time, fewer sanitation variables, and energy savings. The name "continuous" is given to this process because only a part of the batch (anywhere from 5-100 gallons per minute) is pasteurized continually as it flows through a heat exchange. Continuous pasteurization is achieved using either a plate heat exchanger or tubular heat exchanger. Plate is used often with the pasteurization of milk and non pulpy liquids. If the liquid is thick, pulpy, or fibrous, as many juices are, a tubular heat exchange is used to avoid blockage in the system and burning. The heating medium is either water or steam.

Defining HTST, UP, UHT, Flash Pasteurization, and Hot Fill

Within continuous pasteurization there are a number of different processes. You've probably heard of HTST (high temperature short time,) Ultra pasteurization, and Ultra-high temperature sterilization. Each of these forms of pasteurization has a different temperature and hold time. For HTST pasteurization, the temperature is typically 165 degrees to 180 degrees Fahrenheit. The hold time is anywhere from 3 to 15 seconds. Ultra pasteurization ranges from 190 degrees and 212 degrees Fahrenheit with hold times of 1 to.01 seconds. UHT sterilization is 280 degrees for 2 seconds. The shelf life and flavor of the liquid can be affected depending on which process is used.

With either of these processes a "Flash Pasteurization" can be achieved if the liquid is immediately passed through a second heat exchange prior to bottling, cooled to ambient temperature, and filled cold in an aseptic environment. This is often the case with UP and UHT pasteurization.

A hot fill process is also used; usually with HTST pasteurization, where the liquid is filled into bottles while still hot, thus sterilizing the bottle and cap. The already bottled liquid can then pass through a cooling tunnel and return to ambient temperature as quickly or as slowly as you like. Advantages of the HTST pasteurization hot fill over the aseptic cold fill are lower cost, and 100% sterile product. It costs a lot of money to maintain an aseptic environment for cold filling, and on occasion, the bottle is not sterile when filled. One may see the aseptic process as the best because the liquid is hot for a shorter amount of time. Ultimately, you have to weigh the benefits and costs in order to decide which process is best for you. Often, you can counter the negative effects of a hot fill by the addition of antioxidants to the formula. From my experience, HTST pasteurization hot fill is the best option for perishable beverages such as fruit and vegetable juices, and teas.

For liquid contract manufacturing services utilizing the HTST continuous pasteurization hot fill process, visit www.Tropicalresources.com.


Manufacturing Juices and Other Acidic Beverages - What Pasteurization Process is Right For You?

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Sunday, December 4, 2011

REP. Ron Paul's HR 1830- Allows RAW MILK to be alien beyond accompaniment lines-WWW.FRANKTORTORICI.COM

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Sunday, November 13, 2011

6 Reasons You Should Avoid Dairy at All Costs!

!±8± 6 Reasons You Should Avoid Dairy at All Costs!

Everyone is getting in on the act, putting their name to the milk campaign; celebrities, sports stars, politicians, after all it's nature's perfect food. Uh, no! Not unless you are a calf!

Here are some of the reasons you should avoid dairy:

1. Milk will not reduce fractures.

Contrary to popular belief, eating dairy products has never been shown to reduce fracture risk. In fact, according to the Nurses' Health Study dairy may increase risk of fractures by 50 percent!

2. Less dairy = better bones. Countries with the lowest rates of dairy and calcium consumption (ie Africa and Asia) have the lowest levels of osteoporosis.

3. Calcium isn't as good for your bones as you think. Studies have shown that increased calcium supplementation shows no benefit in reducing risk of fracture. In fact, Vitamin D appears to be much more effective.

4. Calcium may increase cancer risk. Research shows that higher intakes of both calcium and dairy products may increase a man's risk of prostate cancer by 30 to 50 percent. Plus, dairy consumption increases the body's level of insulin-like growth factor-1 (IGF-1) -- a known cancer promoter.

5. Calcium has benefits that dairy doesn't. Calcium supplements may reduce the risk of colon cancer NOT dairy products.

6. Not everyone can stomach dairy. Approx 75% of the worlds population is unable to properly digest milk and dairy products ie they are lactose intolerant.

Plus, dairy may contribute to even more health problems, like:

Allergies Sinus problems Ear infections Type 1 diabetes Chronic constipation

• Anemia (in children)

Because of these worries, you my be considering trying organic milk, however even though this will eliminate concerns like pesticides, hormones, antibiotics, and the effects of homogenization and pasteurization, these benefits don't outweigh dairy's potential risks.

Milk is NOT a natural food for humans. Up until 10000 years ago we had no domesticated animals and weren't able to drink milk. Also, the majority of humans naturally stop producing significant amounts of lactase -- the enzyme needed to properly metabolize lactose, the sugar in milk -- sometime between the ages of two and five. In fact, for most mammals, the normal condition is to stop producing the enzymes needed to properly digest and metabolize milk after they have been weaned. Our bodies just weren't made to digest milk on a regular basis. Instead, most scientists agree that it's better for us to get calcium, potassium, protein, and fats from other food sources, like whole plant foods -- vegetables, fruits, beans, whole grains, nuts, seeds, and seaweed.

Tips for Dealing with Dairy

• Don't rely on dairy for healthy bones. If you want healthy bones, get plenty of exercise and supplement with vitamin D daily.

• Get your calcium from food. These include dark green leafy vegetables, sesame tahini, sea vegetables, and sardines or salmon with the bones.

• Try giving up all dairy. That means eliminate milk, cheese, yogurt, and ice cream for two weeks and see if you feel better. You should notice improvements with your sinuses, post-nasal drip, headaches, irritable bowel syndrome, energy, and weight. Then start eating dairy again and see how you feel. If you feel worse, you should try to give it up for life.

• If you can tolerate dairy, use only raw, organic dairy products. I suggest focusing on fermented products like unsweetened yogurt and kefir, occasionally.


6 Reasons You Should Avoid Dairy at All Costs!

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Friday, November 11, 2011

Raw Milk Myths - Part 2 of 3

!±8± Raw Milk Myths - Part 2 of 3

Myth 2: Pasteurized milk and raw milk are nutritionally equivalent.

In the public warning that the FDA and CDC posted about raw milk, they also claimed that "numerous studies" show no nutritional differences between raw and pasteurized milk. This is disturbing, since so many doctors, scientists and researchers have found the opposite to be true. There are studies funded by the Dairy Industry that claim that there are few nutritional differences and it seems that the FDA/CDC based their claim on these alone. (Actually, they based their statement on one paper alone.)

"Unpasteurized milk: a health fetish" was published in 1984. In it, Dr. M.E. Potter misinterprets and misrepresents a study done by Dr. Francis Pottenger Jr. in 1946. Pottenger fed cats a variety of milk and meat diets, including pasteurized milk, raw milk and milk fortified with added synthetic vitamin D. M.E. Potter states that "Numerous studies of the relative nutritional merits of raw and pasteurized milk have been conducted in animals and humans, and no differences were detectable. "This statement seems to (but should not,) include Pottenger's work. Pottenger's research found that:

- The pasteurized milk and the milk enriched with synthetic vitamin D did not provide enough nutritional content for the cats
- Cats fed pasteurized milk showed "lessened reproductive efficiency," "skeletal changes" and "the kittens presented deficiencies in development"
- 13 cats fed pasteurized milk all died within several months
- Cats fed raw milk remained disease-free, fertile and healthy for several generations

Dr. Pottenger was among the many doctors in the early 1900's who were opposed to pasteurization. Much research from that time found pasteurized milk to be nutritionally deficient. Researchers found that pasteurized milk caused anemia, asthma and stunted growth. Pottenger himself said:

"Let us have closer cooperation between raw-milk producers and public-health officials so that the growth-producing factors of raw milk can be studied. We cannot afford to pasteurize milk if it is found that pasteurization diminishes the potency of the growth-promoting factors that determine the skeletal development of our children. We cannot afford to lessen the resistance of our children to respiratory infection, asthma, bronchitis and the common cold when factors preventing them are present in greater amounts in properly clean raw milk than in pasteurized milk."

Multiple studies found that pasteurized milk was associated with scurvy because of the degradation of vitamin D. 

"Although pasteurized milk is to be recommended on account of the security which it affords against infection, we should realize that it is an incomplete food. Unless an antiscorbutic, such as orange juice,....or potato water is added, infants will develop scurvy on this diet. This form of scurvy takes some months to develop and may be termed subacute. It must be considered not only the most common form of this disorder, but the one which passes most often unrecognized." Hess, A. F.

Other doctors found that pasteurization destroyed Vitamin A, the many Vitamin B's, Vitamin D, calcium and phosphorous. It was also reported that children who drank raw milk became resistant to contracting tuberculosis. Over the course of 5 years, 14 cases of tuberculosis occurred in children who drank pasteurized milk while only 1 case occurred in those who drank raw. A summary of these studies can be reviewed at realmilk.com. Most of the funded research that has occurred since the 1940's has been that of the industrial dairy industry.

In an effort to combat California's recent ban on raw milk, Dr. William Campbell Douglass Jr. (an international expert on raw and pasteurized milk) and Aajonus Vonderplanitz (today's leading scientist on the effects of raw milk on humans), together wrote an expert summary of research that shows the benefit of raw milk and the harmful effects of pasteurization. In it, Douglass and Vonderplanitz show the link between pasteurized milk and:

acne
Addison's disease
anemia
artherosclerosis
colic
colon, ovarian, prostrate and stomach cancers
constipation
deafness
diabetes
diarrhea
glucose intolerance
heart disease
hormonal imbalances
hypertension
muscular dystrophy
obesity
osteoporosis
sciatica
sterility
tooth decay
 
The report also summarizes the health-promoting effects of raw milk. The oxidation of fats and cholesterol creates free radicals that are linked to artherosclerosis and cancer. Pasteurized milk contains these oxides while raw milk does not. Various studies have found that raw milk reduces cholesterol levels.  Dr. George Mann found that 4 quarts of milk a day lowered subject's blood cholesterol by 25%.
 
In 2006, a study published in the Journal of Allergy and Clinical Immunology found that children who drank raw milk had significantly less instances of asthma, eczema and hay fever than those who drank pasteurized milk. Raw milk cut histamine by more than 50%. Fermented raw milk has been found to slow tumor growth and decrease stomach cancer activity.
 
Probiotics and the Immune System

One of the most disturbing results of pasteurization is the destruction of probiotics in natural milk. Today, we recognize how important "friendly bacteria" really are. Sally Fallon remarks, "Scientists are only beginning to appreciate the role of beneficial bacteria in our food and in our intestinal tracts. The anti-microbial paradigm of medicine has been completely discredited; laws mandating pasteurization are based on 40-year-old science."

Studies have found that listeria and E.Coli could not grow in raw milk and salmonella could not be found after 24 hours in raw milk. With food-borne illness outbreaks on the rise, it makes little sense to destroy bacteria that can contribute to the success of healthy flora in our digestive tracts and defeat disease-causing microorganisms. Many studies have linked asthma and allergies to pasteurized milk. 

Sally Fallon muses that "Pasteurization distorts the delicate protein compounds in milk. The body recognizes these warped components as foreign and mounts an energy-sapping immune response."

The Pancreas

Pasteurization, by destroying enzymes, greatly increases the workload on the pancreas. The pancreas must produce enzymes that may or may not be able to digest pasteurized milk. This and the added work that other processed and refined foods put on the pancreas may be a link to ever-increasing number of deaths due to pancreatic cancer.

Conjugated Linoleum Acid (CLA)

Conjugated linoleum acid (CLA) is an omega-6 fatty acid found in the milk of grass-fed cows. It combats obesity and diabetes, improves the immune response, reduces food allergies, builds muscle and burns fat. The milk of grain-fed cattle contains 3 to 5 times less CLA than grass-fed cows.

Raw milk farmers that allow their cows pasture have little need for antibiotics and added hormones. Besides pasteurization, other common industrial dairy practices make most milk even more dangerous to our health.

Growth Hormones

Growth hormones help cows to produce 6-12 gallons of milk per day. Growth hormones affect the pituitary glands of cows and results in pituitary pus and discharge in the milk.  Growth hormones pass through our digestive tracts and make their way into our bloodstreams. Added hormones in pasteurized milk have been linked to early menstruation in girls and the development of breasts in boys.

Homogenization

We hear a lot about the dangers of trans fats in hydrogenated oils but few people realize that homogenized milk is just as destructive to our health. Homogenization is a process first developed to disguise thinned milk. Left to its own devices, milk will separate so that the butterfat rises to the top. Butterfat was coveted by consumers and it signified the quality of the milk. Milk producers began using homogenization, a high-pressure procedure that breaks the fat down into miniscule droplets, to make their milk creamier and disguise varying levels of butterfat.

This high pressure oxidizes fats, turning them rancid and causing the production of free radicals in the body. Free radicals have been linked to nearly every human disease and disorder from heart disease to ADHD. The droplets of fat suspended in the milk also can pass through the gut wall, carrying hormones and other compounds and bypassing the filtering effect of the digestive tract and liver.

Lowfat, Skim and Fat-free Milk

Milk fat is what allows us to absorb the fat-soluble vitamins and minerals in milk. When fat is removed from milk, homogenization is necessary to make the milk still seem creamy. Non-fat dried milk is added to lowfat and skim milks to add body. Powdered milk is one of the most potent sources of oxidized fats and free radicals. Powdered milk and cheese are a source of rancid cholesterol and neurotoxic amino acids. Skim milk is fed to pigs in order to fatten them up.

Added Vitamin D

Synthetic vitamin D2 and D3 are added to pasteurized milk. Synthetic D2 has been linked to heart disease and D3 is not readily assimilated into the body. Both forms of this vitamin are added to milk in potentially toxic levels. The nutritional benefits of raw milk and the nutritional deficiency of pasteurized milk seem too obvious to ignore, and yet, the message we get from our government would have us believe otherwise.


Raw Milk Myths - Part 2 of 3

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