Food Grade Centrifuge – All Stainless Steel Contact

Food grade centrifuge

Stainless Steel, Food Grade Centrifuge for Peppermint Oil Purification


Peppermint oil is used as a flavoring agent in a wide variety of consumable products such as toothpaste, chewing gum, soap etc. Raw peppermint oil contains moisture which needs to be separated before the oil is distilled to make it totally dry. Large amounts of water in the oil can cause unacceptable load on the distillation system. Trace amounts of moisture left in the oil leads to quality & shelf-life issues. Industrial scale stainless steel centrifuge is the solution!

One of the largest producers of peppermint oil contacted Dolphin Centrifuge to perform a feasibility study on their oil. The producer wanted to determine the effectiveness of stainless steel centrifugal separation equipment on moisture removal from their bulk procured oil with appreciable amounts of water.

Dolphin Centrifuge facilitated a small scale test with a pilot centrifuge to demonstrate proof-of-concept. The centrifugal extraction efficiency of a liquid liquid extraction system was ideal for this extraction process. The customer shipped us 20 gallons of raw peppermint oil to extract moisture through a liquid liquid separating centrifuge. The customer technician used a ‘freeze test’ to quickly verify the dryness of the separated light phase (pure peppermint oil). He would freeze small volume of the oil in a refrigerator. Clear oil was an indication of absence of moisture in the processed fluid. All samples taken from our testing centrifuge were clear post freezing and the test was judged to be a success!

Based on the results of the test detailed above, the customer purchased a stainless steel centrifuge from Dolphin Centrifuge. Due to the absence of any solid in the bulk oil, it was decided to use a liquid liquid separation, disc-stack centrifuge for  their production. After on-site installation and continuous production for a few months, the customer came back with an repeat order for multiple food grade centrifuges of the same type which was originally supplied.

Other food and beverage  industry applications for centrifugal separation equipment include:

  • Apple Juice and other fruit juices
  • Flavor extraction
  • Hemp Oil
  • Vegetable Juice
  • Clarified Butter
  • Olive Oil

Alfa Laval Centrifuge

Alfa Laval SSB 206 (3-phase) Sanitary Centrifuge for peppermint oil drying was supplied by Dolphin Centrifuge.
This centrifuge is a standard ‘solid-bowl‘ type with all stainless steel product contact.