Featured Research

from universities, journals, and other organizations

Origin of Italian wines is controlled better with multivariate statistics

Date:
November 7, 2012
Source:
Radboud University Nijmegen
Summary:
Wine derives its economic value to a large extent from geographical origin, which has a significant impact on the quality of the wine. According to the food legislation, wines can be without geographical origin (table wine) and with origin. Wines with origin must have characteristics which are essentially due to its region of production and must be produced, processed and prepared exclusively within that region.

Wine derives its economic value to a large extent from geographical origin, which has a significant impact on the quality of the wine. According to the food legislation, wines can be without geographical origin (table wine) and with origin. Wines with origin must have characteristics which are essentially due to its region of production and must be produced, processed and prepared exclusively within that region.

The development of fast and reliable analytical methods for the assessment of claims of origin is very important. Analytical chemists from Radboud University Nijmegen in the Netherlands came to help the Italian wine control institute Edmund Mach. The current official method is based on the measurement of stable isotope ratios of water and alcohol in wine, which are influenced by climatic factors.

The researchers evaluated the univariate approach underlying the official method to assess claims of origin and propose several new methods to get better geographical discrimination between samples. They show that multivariate methods are superior than univariate approaches in that they show increased sensitivity and specificity. In cases where data are non-normally distributed, an approach based on mixture modelling provides additional improvements. The results in this paper are based on 5220 Italian wine samples collected in the period 2000-2010.


Story Source:

The above story is based on materials provided by Radboud University Nijmegen. Note: Materials may be edited for content and length.


Journal Reference:

  1. N. Dordevic, R. Wehrens, G.J. Postma, L.M.C. Buydens, F. Camin. STATISTICAL METHODS FOR IMPROVING VERIFICATION OF CLAIMS OF ORIGIN FOR ITALIAN WINES BASED ON STABLE ISOTOPE RATIOS. Analytica Chimica Acta, 2012; DOI: 10.1016/j.aca.2012.10.046

Cite This Page:

Radboud University Nijmegen. "Origin of Italian wines is controlled better with multivariate statistics." ScienceDaily. ScienceDaily, 7 November 2012. <www.sciencedaily.com/releases/2012/11/121107085630.htm>.
Radboud University Nijmegen. (2012, November 7). Origin of Italian wines is controlled better with multivariate statistics. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2012/11/121107085630.htm
Radboud University Nijmegen. "Origin of Italian wines is controlled better with multivariate statistics." ScienceDaily. www.sciencedaily.com/releases/2012/11/121107085630.htm (accessed July 29, 2014).

Share This




More Plants & Animals News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Ebola Virus Threatens West Africa

Deadly Ebola Virus Threatens West Africa

AP (July 28, 2014) West African nations and international health organizations are working to contain the largest Ebola outbreak in history. It's one of the deadliest diseases known to man, but the CDC says it's unlikely to spread in the U.S. (July 28) Video provided by AP
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Newsy (July 28, 2014) The asteroid that killed the dinosaurs struck at the worst time for them. A new study says that if it hit earlier or later, they might've survived. Video provided by Newsy
Powered by NewsLook.com
Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) 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