Featured Research

from universities, journals, and other organizations

Research Can Lead To Longer Shelf Life For Dairy Products

Date:
December 23, 2002
Source:
Texas A&M University - Agricultural Communications
Summary:
Research done by Texas A&M University graduate student Alexander Lin today may improve many dairy industry consumer products of tomorrow.

COLLEGE STATION – Research done by Texas A&M University graduate student Alexander Lin today may improve many dairy industry consumer products of tomorrow.

Related Articles


Lin's doctoral thesis involved research on "finding the mechanism of how the additives – including gums and phosphate salts – and homogenization pressure affect the quality of a type of dairy-based beverage during extended storage," he said.

In this research, Lin said, canned milk-based diet beverages and milk-based sports drinks that must have a long shelf life were tested to find how quality and length of storage could be improved. "We tried different ingredients to see how they affected quality – how different ingredients have different affects on quality.

"We also checked different processes," he said.

Eventually his research focused on a process called high pressure homogenization. This process was found extend shelf life of these beverages, while at the same time maintaining their quality and nutrient value.

Homogenization, a process that has been in use in the dairy industry for more than a century, involves subjecting dairy products to 2,000 to 3,000 pounds per square inch of pressure. This process results in fat globules that remain disbursed throughout the product, rather than separating and rising to the top the way cream does in non-homogenized milk, Lin said. However, in ordinary homogenization, these fat globules are not all the same size.

Lin decided to see what would happen if much more pressure was applied during the homogenization process. "The pressure we tested went up to 14,000 psi," he said.

The result was smaller, more uniformly-sized fat globules and a more stable product with a longer shelf life.

Lin's research could eventually impact the way many dairy products – including yogurt, skim and whole milk, Cheddar cheese and whey proteins – are processed.

If that happens, consumers will benefit, said Dr. Ronald Richter, professor in food science and committee chair for Lin's research, because "improving the processing will cause improvements in the physical properties and longer shelf life."

By keeping products useable longer, this process could also help cut down waste on the consumer level. And for many products, "you won't have to shake before you use," he added with a smile.

However, the researchers added, this process will increase shelf life before the product is opened, not after. "Once it's open, microbiological contamination by the consumer is the primary factor affecting shelf life," Lin said.

His research will have no effect on whether or not a product should be refrigerated – just on how long it can be used. "It's a method of processing, not storage," Lin said.

The research using high pressure homogenization will probably continue, even after Lin receives his doctorate degree in December, Richter said. "The research will be extended beyond beverages and how they can be controlled.

"We might even want to cause things to gel, like pudding. (If we can) control the functionality with this process – what you put on the surface of things affects how it will behave in different environments."


Story Source:

The above story is based on materials provided by Texas A&M University - Agricultural Communications. Note: Materials may be edited for content and length.


Cite This Page:

Texas A&M University - Agricultural Communications. "Research Can Lead To Longer Shelf Life For Dairy Products." ScienceDaily. ScienceDaily, 23 December 2002. <www.sciencedaily.com/releases/2002/12/021223084204.htm>.
Texas A&M University - Agricultural Communications. (2002, December 23). Research Can Lead To Longer Shelf Life For Dairy Products. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2002/12/021223084204.htm
Texas A&M University - Agricultural Communications. "Research Can Lead To Longer Shelf Life For Dairy Products." ScienceDaily. www.sciencedaily.com/releases/2002/12/021223084204.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Dinosaur Species Found in Museum Collection

New Dinosaur Species Found in Museum Collection

Reuters - Innovations Video Online (Nov. 27, 2014) A British palaeontologist has discovered a new species of dinosaur while studying fossils in a Canadian museum. Pentaceratops aquilonius was related to Triceratops and lived at the end of the Cretaceous Period, around 75 million years ago. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins