A customer walks past aKFC?store in Shanghai July 22, 2014. [Photo/Agencies]

US-based Yum Brands Inc is offering rewards to Chinese whistleblowers who reveal food safety risks and help strengthen monitoring measures with suppliers.

Yum apologized in a public letter on Friday to Chinese consumers for concerns caused at its KFC and Pizza Hut restaurants following the improper handling of meat at its supplier Shanghai Husi Food Co Ltd.

The chains terminated relationships with OSI China and globally.

The company said it has fully coordinated with a Chinese government investigation and followed authorities' guidance and instructions.

Fully reviewing the monitoring and management of its suppliers, the Chinese team of Yum has rolled out plans to discover and prevent such illegal wrong-doing.

The company will require suppliers to set up monitors in production and manufacturing. Its quality management staff will take measures to watch and review suppliers.

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