"We have previously detailed issues relating to the decision to reprocess the original WPC80 (when protein), and being slow about escalating information which are reflected in the charges laid by MPI," she said.
"The WPC80 event caused us to examine in detail what happened, why it happened, and what we must do to minimise the risk of it ever happening again," she said.
Ms Leyland said Fonterra was making good progress in implementing improvements identified in the review.
"We are also working with the Government to progress all the recommendations of its review of New Zealand's dairy food safety regulatory framework, undertaken last year.
"Our customers and consumers need to know that New Zealand's food quality and safety regulations are being robustly applied by food manufacturers and enforced by New Zealand authorities.
"Fonterra is committed to complying with New Zealand's food safety and quality regulations, and being held accountable if it does not," said Ms Leyland.
Food safety minister Nikki Kaye said it was inappropriate to comment as the matter was before the court.
"It is important to note that the compliance investigation has been run by the regulator (MPI), and has been independent from Ministers."
Prime Minister John Key and Fonterra chairman John Wilson are scheduled to travel to China on Monday to explain the situation to Chinese authorities.
Units in the Fonterra shareholders fund, which trade on the NZX, were last quoted at $5.85 -- unchanged from Wednesday's closing level.
***
The charges are:
- Processing dairy product not in accordance with its Risk Management Programme
- Exporting dairy product that failed to meet relevant animal product standards
- Failing to notify its verifier of significant concerns that dairy product had not been processed in accordance with its Risk Management Programme
- Failing to notify the Director General as soon as possible that exported dairy product was not fit for intended purpose.
