Featured Research

from universities, journals, and other organizations

Invention Detects Hidden Dried Plum Pits

Date:
January 6, 2007
Source:
USDA/Agricultural Research Service
Summary:
Festive gift trays of sweet, sun-ripened fruits often include delicious dried plums--also known as prunes. Agricultural Research Service (ARS) scientists in California have invented an inexpensive approach that dried plum processors can use to help ensure no large pieces of a plum's pit remain inside this fruit.

Festive gift trays of sweet, sun-ripened fruits often include delicious dried plums--also known as prunes. Agricultural Research Service (ARS) scientists in California have invented an inexpensive approach that dried plum processors can use to help ensure no large pieces of a plum's pit remain inside this fruit.

Agricultural engineers Eric S. Jackson, Ronald P. Haff and Thomas C. Pearson developed and tested the technology for about 1-1/2 years before deciding it was ready for processors to try. The researchers put thousands of tender, moist dried plums to the test in their laboratory experiments at the agency's Western Regional Research Center in Albany, Calif. Co-inventor Pearson is now with ARS in Manhattan, Kan.

The pit detector could be used as an inexpensive addition to processing lines already equipped with other detectors to find hidden pits or pit pieces.

Dried plums processed with the new device would be moved on a conveyor belt to a roller that gently presses them against the belt. A device known as a force transducer, mounted underneath the conveyor belt and in line with the roller, detects the amount of resistance that the roller encounters. The transducer's reading is sent to a signal processor that is linked to a computer.

Using a mathematical formula, or algorithm, that the scientists wrote, the computer determines whether the transducer's reading likely indicates the presence of a pit or pit piece. If that is the case, the signal processor instructs a sorter to remove the prune from the processing line, so it can be retested, hand-sorted or simply rejected.

The accuracy rate is impressive: false positives occur less than one percent of the time.

Though so far tested primarily at laboratory speeds, the device could easily be ramped up to processing plant rates. And, it could likely be used to check other dried stone fruits such as apricots, cherries and peaches.

The scientists received a patent for their invention earlier this year. Some dried fruit processors have already shown interest in it.

ARS is the U.S. Department of Agriculture's chief scientific research agency.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Invention Detects Hidden Dried Plum Pits." ScienceDaily. ScienceDaily, 6 January 2007. <www.sciencedaily.com/releases/2007/01/070102134300.htm>.
USDA/Agricultural Research Service. (2007, January 6). Invention Detects Hidden Dried Plum Pits. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2007/01/070102134300.htm
USDA/Agricultural Research Service. "Invention Detects Hidden Dried Plum Pits." ScienceDaily. www.sciencedaily.com/releases/2007/01/070102134300.htm (accessed September 1, 2014).

Share This




More Matter & Energy News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Australian Airlines Relax Phone Ban Too

Australian Airlines Relax Phone Ban Too

Reuters - Business Video Online (Aug. 26, 2014) Qantas and Virgin say passengers can use their smartphones and tablets throughout flights after a regulator relaxed a ban on electronic devices during take-off and landing. As Hayley Platt reports the move comes as the two domestic rivals are expected to post annual net losses later this week. Video provided by Reuters
Powered by NewsLook.com
Hurricane Marie Brings Big Waves to California Coast

Hurricane Marie Brings Big Waves to California Coast

Reuters - US Online Video (Aug. 26, 2014) Huge waves generated by Hurricane Marie hit the Southern California coast. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Chinese Researchers Might Be Creating Supersonic Submarine

Chinese Researchers Might Be Creating Supersonic Submarine

Newsy (Aug. 26, 2014) Chinese researchers have expanded on Cold War-era tech and are closer to building a submarine that could reach the speed of sound. Video provided by Newsy
Powered by NewsLook.com
Breakingviews: India Coal Strained by Supreme Court Ruling

Breakingviews: India Coal Strained by Supreme Court Ruling

Reuters - Business Video Online (Aug. 26, 2014) An acute coal shortage is likely to be aggravated as India's supreme court declared government coal allocations illegal, says Breakingviews' Peter Thal Larsen. Video provided by Reuters
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