Aldi and Trader Joe's, two chains owned by a German trust, are the exception.
His sons both still work at Aldi Nord and seem likely to inherit the fortune.
FORBES: Billionaire Owner of Trader Joe's, Theo Albrecht, Dies
"Aldi confirms that it has regrettably had to end its contract with Silvercrest, " it said.
BBC: Horsemeat row: Trade union's fears over Silvercrest jobs
Aldi Ireland is the latest major supermarket to withdraw a frozen burger contract with Silvercrest.
BBC: Horsemeat row: Trade union's fears over Silvercrest jobs
The care worker's remains were found close to a quarry, along with two Aldi bags.
The March 2012 issue of the German Manager Magazin reported on the current Aldi operations.
The Aldi stores are small, low margin, high quality food stores with little fancy fixturing.
Berthold and Theo Jr. inherited Aldi Nord from their father Theo Albrecht, who died in 2010.
FORBES: German Billionaire Berthold Albrecht, Heir To Aldi Markets And Trader Joe's, Dead At Age 58
They have been withdrawn immediately so that Aldi can conduct its own investigations into the factory concerned.
Aldi UK said it commissioned its own "independent DNA testing" of products produced by the Dalepak factory.
Kantar World-panel said only the discount supermarket chains Aldi and Lidl had shown stronger growth in 2012.
Their wealth came courtesy of their father, Aldi co-founder Theo Albrecht, who died aged 88 in July 2010.
The supermarket giant Tesco, frozen food firm Findus and budget chain Aldi received mince containing horsemeat from Comigel.
The Aldi philosophy may not be for every company or for every product.
Today there are about 4981 stores that belong to Aldi North and 4504 stores that belong to Aldi South.
Aldi was founded by Karl and Theo Albrecht in 1913 when they opened a small grocery store in Essen.
Comigel alerted Findus and Aldi that their products "do not conform to specification".
Assets: 100% of Aldi Group, with 4, 000 stores in Europe and 509 stores in U.S. -- and they want more.
German billionaire Berthold Albrecht, an heir to the Aldi Nord discount supermarket chain, died last month at age 58.
FORBES: German Billionaire Berthold Albrecht, Heir To Aldi Markets And Trader Joe's, Dead At Age 58
Aldi UK has suspended its contract with British firm Dalepak after traces of horse DNA were found in its burgers.
Kantar suggests the big risers were Aldi, with grocery receipts up 30%, Lidl up by 11% and Iceland up 10%.
Traces of both horse and pig DNA were found in value beefburgers sold in Iceland, Tesco, Aldi, Lidl and Dunnes Stores.
BBC: Horsemeat row: Trade union's fears over Silvercrest jobs
They advised them to remove Findus Beef Lasagne and Aldi's Today's Special Frozen Beef Lasagne and Today's Special Frozen Spaghetti Bolognese.
Aldi said only one of its products - which is only on sale in the Republic of Ireland - was affected.
In Germany, department stores are still icons of the inner city, despite the success of suburban discounters, such as Lidl and Aldi.
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Traces of both horse and pig DNA were also found in frozen value beefburgers sold by Iceland, Lidl and Aldi and Dunnes.
Large amounts of horsemeat were found in some burger samples manufactured at the Silvercrest plant in County Monaghan, which supplied Aldi Ireland.
In a statement, Aldi Ireland said it was necessary to terminate its contract with Silvercrest "due to a serious breach of contract".
At age 85 manages Aldi's northern chain with help of two sons.
Berthold was a member of the board of directors of Aldi Nord.
FORBES: German Billionaire Berthold Albrecht, Heir To Aldi Markets And Trader Joe's, Dead At Age 58
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