Featured Research

from universities, journals, and other organizations

California Vineyard Uses High-tech Chemistry To Choose Optimum Picking Time For Grapes

Date:
September 16, 2006
Source:
American Chemical Society
Summary:
A Modesto winemaker is using the latest 21st Century analytical chemistry technology to supplement the time-honored practice of tasting a mouthful of grapes to determine when the fruit is ready for picking. The report is part of a symposium on wine and chemistry at the September national meeting of the American Chemical Society in San Francisco.

Chemistry helps winemakers determine the best time to pick the grapes, according to research presented at the American Chemical Society national meeting in San Francisco.
Credit: Photo by Stephen Ausmus, USDA, Agricultural Research Service

A Modesto winemaker is using the latest 21st century analytical chemistry technology to supplement the time-honored practice of tasting a mouthful of grapes to determine when the fruit is ready for picking.

Related Articles


The winery has turned to spectroscopy and chromatography to evaluate aroma, color, taste and mouthfeel of grapes, according to Michael Cleary, senior manager of grape and wine chemistry at E & J Gallo Winery, who described the firm's Grape Assessment Program at the 232nd national meeting of the American Chemical Society, the world's largest scientific society. Annual California wine production is currently a $16.5 billion industry.

Chromatography is a laboratory process for chemically separating mixtures into their component parts. Using this process, grapes can be analyzed for their molecular makeup. Molecules indicative of aroma, taste and feel to the palate can be identified and the grapes then harvested when these molecules are at their highest concentrations, Cleary explains.

The purpose of using analytical chemistry testing, he says, is to complement historical time-consuming -- though still useful -- evaluation methods like chewing the grapes to best determine when to pick them. "It takes good grapes to make good wine and we're trying to improve our predictions of when to harvest," he says. The pharmaceutical, petroleum, food and beverage industries, and others also use technologies like chromatography to assess their products, he adds.

Cleary's presentation is one of four papers in a Chemistry of Wine symposium, to be held Sunday afternoon, Sept. 10, and sponsored by the ACS Younger Chemists Committee. The other papers deal with wine flavor chemistry, an overview of the chemistry of winemaking and the world of the winemaking consultant.

The American Chemical Society -- the world's largest scientific society -- is a nonprofit organization chartered by the U.S. Congress and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.


Story Source:

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


Cite This Page:

American Chemical Society. "California Vineyard Uses High-tech Chemistry To Choose Optimum Picking Time For Grapes." ScienceDaily. ScienceDaily, 16 September 2006. <www.sciencedaily.com/releases/2006/09/060911103534.htm>.
American Chemical Society. (2006, September 16). California Vineyard Uses High-tech Chemistry To Choose Optimum Picking Time For Grapes. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2006/09/060911103534.htm
American Chemical Society. "California Vineyard Uses High-tech Chemistry To Choose Optimum Picking Time For Grapes." ScienceDaily. www.sciencedaily.com/releases/2006/09/060911103534.htm (accessed October 24, 2014).

Share This



More Plants & Animals News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Black Bear Cub Goes Sunday Shopping

Black Bear Cub Goes Sunday Shopping

Reuters - Light News Video Online (Oct. 23, 2014) Price check on honey? Bear cub startles Oregon drugstore shoppers. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. 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