A company director whose Japanese restaurant breached multiple food safety standards – including rodent faeces in flour, rice and breadcrumbs –has been fined $30,000.

Three inspections of Pabu Grill and Sake in Collingwood, a court heard, found repeated examples of unhygienic conditions. They also included a disabled toilet being used to store drinks and utensils.

Melbourne Magistrates Court was told on Thursday that City of Yarra inspectors saw that rodents had eaten into bags of sesame seeds, and large amounts of their faeces were on the kitchen floor and on a bag of pickled ginger.

Prosecutor Mathew Sherwell had detailed earlier that after a first inspection of the Smith Street premises on January 29 last year found numerous contravention of food standards, Dang Khoa Nguyen was given time to rectify the conditions under a food safety program.

Mr Sherwell told magistrate Andrew Capell a follow-up inspection the next month found nine outstanding contraventions and that three remained at a further check three weeks later.