3 replies to this topic

[QNut]

We will start in our plant with a new product portfolio, of which the processing conditions will be 5 sec at 146ºC at a flow of 4250 ltr/h. We do not want to do aseptic intermediate cleaning (AIC) at this temperature, because the sodium hydroxide will wear down our gaskets and the nitric acid our stainless steel quite fast. At what temperature can I run AIC when the flow and the holding time are fixed, but still stay in sterile conditions?

[Tony-C]

We will start in our plant with a new product portfolio, of which the processing conditions will be 5 sec at 146ºC at a flow of 4250 ltr/h. We do not want to do aseptic intermediate cleaning (AIC) at this temperature, because the sodium hydroxide will wear down our gaskets and the nitric acid our stainless steel quite fast. At what temperature can I run AIC when the flow and the holding time are fixed, but still stay in sterile conditions?

 

Hi Qnut,

 

 

You should follow the manufacturer's recommendations. Cleaning can be conducted at lower temperatures and the plant sterilized afterwards. It really all should be programmed in to your UHT plant.

 

Kind regards,

 

Tony

[Lelouch_rayne]

Is it necessary to only used hydrogen peroxide during cleaning? Maybe you can used other cleaning agents that can withstand such temperature without producing some side effects.

 

If it really needs to be Hydrogen Peroxide, why don't you first do a validation studies. Maybe try something in the laboratory first, try to used different concentration of Hydrogen Peroxide. The re activity of a certain chemicals would somehow depends on its purity or concentration.

 

 

We also have a UHT system but we used caustic soda and acid for CIP with the same processing conditions you mentioned above.

[She_Tap]

The UHT lines require care and cleaning protocols uncertain. I recommend reading the manual or contact the manufacturer. In a company where I worked, 2 type of cleaning, the full CIP and CIP are handled only caustic soda. But what if it is validated after product opt for the cleaning system, and if we chocolaty products after these had to put milk only had to do a full CIP.

I hope it is helpful.

Atte.

ST