Featured Research

from universities, journals, and other organizations

Traditional cheeses: gustatory richness, health quality assured by their microbiota

Date:
May 16, 2014
Source:
INRA - Paris
Summary:
The benefits of traditional, raw-milk cheeses have been reviewed by researchers who have shown that traditional cheeses have unrivalled advantages in terms of both their diversity and their gustatory richness, but also regarding their protection against pathogenic agents. These benefits are linked to the specific microbiota found in these cheeses; they result from the use of raw milk, combined with the specific techniques used to manufacture traditional cheeses.

Raw milk AOP cheeses are currently the best traditional cheeses available. They have all the characteristics generally used to describe traditional food products: production in limited geographical areas, use of specific know-how and techniques handed down from generation to generation, and the use of milk that has undergone little or no treatment after milking.
Credit: INRA/J. Weber

Research scientists from INRA, Université de Caen and Université de Franche-Comté have reviewed the benefits of traditional, raw-milk cheeses. They showed that traditional cheeses have unrivalled advantages in terms of both their diversity and their gustatory richness, but also regarding their protection against pathogenic agents. These benefits are linked to the specific microbiota found in these cheeses; they result from the use of raw milk, combined with the specific techniques used to manufacture traditional cheeses.

A rich microbiota for intense gustatory pleasure

Traditional cheeses contain a rich and highly specific microbiota because of the diversity of the traditional methods used in their manufacture. From the production of milk to the ripening of cheeses in different environments, a wide range of micro-organisms have an opportunity to develop. Indeed, raw milk already contains nearly 300 species of bacteria and 70 species of yeasts, which are subsequently found to differing degrees in the cheeses.

The microbiota of cheeses is the source of their different aromas and flavours. Micro-organisms native to raw milk, whose metabolic potentials differ from those of commercial strains, may enable the more intense and complex development of aromatic compounds.

Limited health risks

Producers of raw milk cheeses need to manage their associated health risks. The research team showed that the microbial combinations present in traditional cheeses were able to to protect them -- both in the paste and on the surface -- from dangerous pathogens, notably Listeria monocytogenes. The surfaces of the wooden equipment used to manufacture and ripen certain raw milk cheeses also appeared to be protected by a complex microbial biofilm limiting contamination by redoubtable pathogens such as Salmonella, Listeria monocytogenes, Escherichia coli O157/H7 and Staphylococcus aureus.

Between traditional and industrial cheeses

Traditional raw milk cheeses have undeniable advantages, but the effects of their consumption on human health are still unknown. Nevertheless, studies performed on raw milk have demonstrated that its consumption can protect against allergies, asthma, hay fever and, more generally, atopic sensitisation.

Industrial manufacturers seek to diversify their products by adding selected strains to milk from which the native microflora have been removed. However, the industrial use of these strains is restricted by the regulations because of the problems inherent in proving their safety. At present it seems difficult to be able to reconstitute the breadth of diversity of traditional cheese microbiota and their environments, even though this would make a major contribution to the diversification sought by industrial cheese producers.

WHAT IS A "TRADITIONAL CHEESE"?

Raw milk AOP3 cheeses are currently the best traditional cheeses available. They have all the characteristics generally used to describe traditional food products: production in limited geographical areas, use of specific know-how and techniques handed down from generation to generation, and the use of milk that has undergone little or no treatment after milking. Raw milk AOP cheeses frequently come from mountainous areas, and are mainly produced in small processing units. The name "traditional cheese" can also extend to cheeses produced using milk whose native microbiota has been eliminated by different treatments applied to the milk if they are produced on a farm or in small units, if they are inoculated with a variety of acidifying yeasts, and if the microbiota that causes ripening is allowed to be expressed (30% of AOP cheeses in France).


Story Source:

The above story is based on materials provided by INRA - Paris. Note: Materials may be edited for content and length.


Journal Reference:

  1. Marie-Christine Montel, Solange Buchin, Adrien Mallet, Céline Delbes-Paus, Dominique A. Vuitton, Nathalie Desmasures, Françoise Berthier. Traditional cheeses: Rich and diverse microbiota with associated benefits. International Journal of Food Microbiology, 2014; 177: 136 DOI: 10.1016/j.ijfoodmicro.2014.02.019

Cite This Page:

INRA - Paris. "Traditional cheeses: gustatory richness, health quality assured by their microbiota." ScienceDaily. ScienceDaily, 16 May 2014. <www.sciencedaily.com/releases/2014/05/140516092120.htm>.
INRA - Paris. (2014, May 16). Traditional cheeses: gustatory richness, health quality assured by their microbiota. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2014/05/140516092120.htm
INRA - Paris. "Traditional cheeses: gustatory richness, health quality assured by their microbiota." ScienceDaily. www.sciencedaily.com/releases/2014/05/140516092120.htm (accessed September 22, 2014).

Share This



More Plants & Animals News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) — The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) — Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) — The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) — A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) 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:
from the past week

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