A bakery in Sydney's south behind a Salmonella outbreak that affected more than 200 people last year has been hit with a $122,000 fine.

The owners of the Box Village Bakery in Sylvania, Thi Thu Ngo and Hung Son Le were each fined $61,000 after pleading guilty to five breaches of selling unsafe food and five breaches of failing to meet food safety standards. They were also ordered to pay $7,199 in professional costs.

Parents Kane and Ashley Buchanan pictured after Ashley's emergency caesarean after contracting food poisoning from a Sylvania bakery. Credit:Kirk Gilmour

All up, there were 203 documented cases of people who presented to hospitals or doctors with gastroenteritis symptoms after eating food linked to the bakery, including chicken rolls and salads in January 2016.

One woman was forced to undergo an emergency caesarean and deliver her baby five weeks early when she became violently ill after eating a hot chicken roll with gravy from the bakery.