California produce company Ippolito International has announced a voluntary recall of 1,715 cartons of bunched spinach due to potential salmonella contamination.

The voluntary recall comes after routine random analysis of bunched spinach in Michigan by government health officials tested positive.

"Conducting this voluntary recall is the right thing to do for our customers and consumers," said Butch Corda, Ippolito International general manager.

"This is a first for us, and even that is too many. We'll work diligently to minimise the likelihood of this occurring. The fresh produce industry is seeing an increase in routine testing by regulators, and that's positive - it's showing the system is working to protect public health," he added.

Ippolito International has identified the specific harvest lot contaminated and all buyers who received the product have been contacted, the company said.

No other Ippolito International products or packs are involved in this recall and no illnesses have been reported to date, the group emphasised.