Featured Research

from universities, journals, and other organizations

New filling, cooling and storage system may prevent bacterial growth and prolong shelf life of orange juice

Date:
December 21, 2009
Source:
American Society for Microbiology
Summary:
Researchers in Brazil have estimated the growth timeline of a bacterium that causes orange juice spoilage during shelf life (approximately 6 months) and developed a safe and inexpensive filling, cooling, and storage protocol that inhibits bacterial growth and offers an alternative to other proposed treatments.

Researchers in Brazil have estimated the growth timeline of a bacterium that causes orange juice spoilage during shelf life (approximately 6 months) and developed a safe and inexpensive filling, cooling, and storage protocol that inhibits bacterial growth and offers an alternative to other proposed treatments.

Related Articles


They report their findings in the December 2009 issue of the journal Applied and Environmental Microbiology.

Alicyclobacillus sp. was first attributed to spoiled apple juice, or "off" flavors, in 1982 and Alicyclobacillus acidoterrestris is recognized as the most significant spoilage species within the family. Its ability to grow in a broad temperature range under acidic conditions and withstand heat allows for both survival during pasteurization and growth during juice storage and creates a continuous challenge for fruit juice and beverage industries worldwide.

Pasteurization followed by hot-fill or cold-fill processes are the two main methods used by the fruit juice industry to eradicate bacterial presence. Hot-filling, described as heating the product to approximately 200˚ Fahrenheit and holding for 15 to 20 seconds then filling into the package and cooling at room temperature, has been used extensively to process fruit drinks. However, the extended time that the product is maintained at room temperature allows for growth of bacteria such as A. acidoterrestris that can thrive in a wide temperature range. In the study researchers estimated and compared growth timelines of A. acidoterrestris in hot-filled orange juice following pasteurization that was cooled and stored in various conditions ranging from 68˚ to 95˚ Fahrenheit and inoculated with two different amounts of the bacterium. Only one treatment involving storage at 68˚ completely inhibited A. acidoterrestris growth for the full 6-month shelf life.

"In conclusion, treatment 5 (storage at 20˚ C) was more efficient than any of the others since in this case the A. acidoterrestris population remained inhibited for the entire shelf-life of the orange juice," say the researchers. "This measure can be considered a safe, easy, and inexpensive alternative procedure to avoid A. acidoterrestris growth during the orange juice shelf-life."


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. A.C.N.F. Spinelli, A.S. Sant'Ana, S. Rodrigues-Junior, P.R. Massaguer. Influence of Different Filling, Cooling, and Storage Conditions on the Growth of Alicyclobacillus acidoterrestris CRA7152 in Orange Juice. Applied and Environmental Microbiology, 2009; 75 (23): 7409 DOI: 10.1128/AEM.01400-09

Cite This Page:

American Society for Microbiology. "New filling, cooling and storage system may prevent bacterial growth and prolong shelf life of orange juice." ScienceDaily. ScienceDaily, 21 December 2009. <www.sciencedaily.com/releases/2009/12/091219080757.htm>.
American Society for Microbiology. (2009, December 21). New filling, cooling and storage system may prevent bacterial growth and prolong shelf life of orange juice. ScienceDaily. Retrieved January 29, 2015 from www.sciencedaily.com/releases/2009/12/091219080757.htm
American Society for Microbiology. "New filling, cooling and storage system may prevent bacterial growth and prolong shelf life of orange juice." ScienceDaily. www.sciencedaily.com/releases/2009/12/091219080757.htm (accessed January 29, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, January 29, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Oxfam Calls for Massive Aid for Ebola-Hit West Africa

Oxfam Calls for Massive Aid for Ebola-Hit West Africa

AFP (Jan. 29, 2015) Oxfam International has called for a multi-million dollar post-Ebola "Marshall Plan", with financial support given by wealthy countries, to help Guinea, Sierra Leone and Liberia to recover. Duration: 01:10 Video provided by AFP
Powered by NewsLook.com
Are We Winning The Fight Against Ebola?

Are We Winning The Fight Against Ebola?

Newsy (Jan. 29, 2015) The World Health Organization announced the fight against Ebola has entered its second phase as the number of cases per week has steadily dropped. Video provided by Newsy
Powered by NewsLook.com
Calif. Health Officials Campaign Against E-Cigarettes

Calif. Health Officials Campaign Against E-Cigarettes

Newsy (Jan. 29, 2015) The California Health Department says e-cigarettes are a public health risk for both smokers and those who inhale e-cig smoke secondhand. Video provided by Newsy
Powered by NewsLook.com
Measles Scare Sends 66 Calif. Students Home

Measles Scare Sends 66 Calif. Students Home

AP (Jan. 29, 2015) Officials say 66 students at a Southern California high school have been told to stay home through the end of next week because they may have been exposed to measles and are not vaccinated. (Jan. 29) Video provided by AP
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


Health & Medicine

Mind & Brain

Living & Well

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