Piperine is extracted from black pepper using dichloromethane. Aqueous hydrotropes can be used in the extraction to result in high yield and selectivity. The amount of piperine varies from 1â2% in long pepper, to 5â10% in commercial white and black peppers.
The United States Secretary of Defense is the head of the Department of Defense. The current Secretary of Defense is Chuck Hagel, who was nominated by President Barack H. Obama and approved by the US Senate on February 27, 2013.
Retired Gen. John Kelly is Trump's pick for Homeland Security secretary. Donald Trump has picked former Marine Corps Gen. John Kelly to run the Department of Homeland Security, the third retired military officer nominated for a role in the president-elect's Cabinet. CBS News was first to report on Wednesday that Kelly had accepted the offer.