Open Forum Discussion Posts

  • Hello Everyone: A few years back we added an optional krill oil sample to the AOCS GOED LPP series. We knew there would be issues with testing a dark red colored oil for Anisidine Value among others. ...

  • There is a potential risk of 3-MCPD in refined coconut oil. Different oil types have different affinities for developing 3-MCPD. I have found that the amount in a specific oil type can vary by manufacturer ...

  • Dear Ryan, There is primary and secondary oxidation in oils. Primary oxidation has high peroxide value and less anisidine value whereas secondary oxidation has less peroxide value and high anisidine ...

  • When I used to test darker oils, I would use the least amount of of oil possible per the procedure. I believe that the procedure calls for 0.5 to 4 grams of oil. Using 0.5 g of dark oil worked better than ...

  • Ryan, The Anisidine test has a few drawbacks when oil is dark. However, the background subtraction does correct for most of the interference. The only oil I have tested with a false response is ...

  • There is a nice publication using a 1H NMR 400 MHz spectrometer to determine the AV, so dark oils can be analysed and the toxic anisidine is avoided. The disadvantage is that an NMR spectrometer is not ...

  • Hello, We are trying to test some darker oils for suitability in animal feed applications. However, the anisidine value seems to be very high (>70) while the peroxide value is less than 1 meq/kg. Therefore, ...

  • REFINING : CD SBO [Argentina /FFA:1.15/P:200ppm/PV:4Meq/70°C/6MT/h] → Heater [90°C] → Dosing [H 3 PO 4 - 40%/1.5 L/h ] → Mixer → Tank [5min] → Dosing ...

  • Dear Alan, Thank you for the informative answer. Actually the coconut oil represents 18% of the formula. Our product is a mixed fermented cream made of: fresh cream (animal-based), Coconut oil, ...

  • Alongside preparing for the AOCS Montreal meeting and replying to posts on this forum I have been recording a couple of my science fiction short stories on YouTube. https://www.youtube.com/channel/UCWZBuoYPIKctl84Besfs2A ...

  • A report published by the European Food Safety Authority (EFSA) in March 2016 included a table of 3-MCPD levels in samples of oil from across Europe that they had collected. The levels of 3MCPD in coconut ...

  • I assume that you are using batch process without a centrifugal separator. When batch neutralization was a common industrial process is was standard practice to wash the oil 3 times with 10% hot water. ...

  • You may already be doing this but it is important for deodorization to pre-treat the oil, by degumming and/or neutralization plus bleaching especially if significant amounts of phospholipids are present. ...

  • Hi Aderonke I think Paulo explained nicely about the issue. You need to treat with Phosphoric acid before neutralizing to have lower phosphorus/soap and then neutralize it with alkali and wash. You ...

  • @Ella Bocquet-Gaylard Not yet, no. It seems to be a piece of specialized equipment, so in the four years since I posted the question, it seems to me that you need a small engineering company who can build ...