Two prominent hotels were among the businesses served with notices for breaches of the food-safety laws last month, according to the Food Safety Authority of Ireland (FSAI).
The FSAI said three closure orders, one prohibition order and one improvement order were issued in May.
A closure notice was served on the kitchen and associated facilities of Trio Bars Limited at the Earl of Kildare Hotel, Kildare Street, Dublin 2 by the South Western Area Health Board (SWAHB). The hotel had been served with an improvement notice in April.
Closure orders are only served when enforcement officers have evidence of "serious infringements" and where standards have fallen so low that consumer health has been put at risk, according to the FSAI. They are served where the danger to public health is considered to be "grave and immediate".
The SWAHB also served an improvement on The Killashee House Hotel, Killashee, Kilcullen Road, Naas, Co Kildare.
Sea fisheries officers from the Department of Communications, Marine and Natural Resources served a partial closure order and a prohibition order on Union Hall Smoked Fish Limited, Union Hall, Skibbereen, Co Cork.
The order prohibited the sale of salted white fish, farmed salmon fillets and smoke salmon sides from the premises.
Environmental health officers from the Northern Area Health Board served a closure order on Any Other Restaurant of 22 Moore Street, Dublin 1.
Mr Peter Whelan, director of service contracts with the FSAI said that the least consumers can expect is that businesses comply with the law. "The legal requirement is the minimum standard and there can be no shortcuts, when it comes to ensuring customers are not put at risk from food poisoning."
Full details of food safety orders are published at the FSAI's website at www.fsai.ie