-
Hot/hot/cold process with Glyceryl Citrate/Lactate/Linoleate/Oleate
Hello and happy new year!So far I only used cold process or hot process with my emulsions but not a mixed process.
I came across a hot/hot/cold method of emulsification with this emulsifier. I have added a screen shot from the manufacturer’s method for reference. Also with the pdf as the screenshot uploaded a bit blurry.
I tested it with a tiny batch (100g) and it seems to have worked great. I’d like to make a larger batch but before I do I wanted to ask a few questions regarding this process please.A. It says to add oil phase to water phase in step 3. I usually add water to my oil, just a preference. Mostly because the oil immediately starts to solidify once off the hotplate and some gets left in the beaker after pouring it out into the water phase. Is it crucial to add oil to water rather than water to oil? If I pour it all at once while homogenising?B. Also it states to start adding the extra water after “half the homogenisation time”, in this case it was seconds and with 1-2kg it won’t be very long either, so how will I know what is half the homogenisation time? Seems almost immediate. Similarly what is “small quantities”?
If anyone used this method and can offer some tips it would be most appreciated.Thank you -
2 Replies
-
@Cosmetic76 For an o/w emulsion like yours, it’s best to add the oil to the water phase, since internal forces will help you get a very fine droplet size, which favors the stability of your emulsion. In the process you describe, the supplier is leaving quite some water in the phase C to help cool down the batch faster, but you need to add it in small amounts not to cause phase inversion. This part is critical, and you need to be very careful if you plan to do the industrial scale-up, especially for the cooling rate.
-
ketchito said:@Cosmetic76 For an o/w emulsion like yours, it’s best to add the oil to the water phase, since internal forces will help you get a very fine droplet size, which favors the stability of your emulsion. In the process you describe, the supplier is leaving quite some water in the phase C to help cool down the batch faster, but you need to add it in small amounts not to cause phase inversion. This part is critical, and you need to be very careful if you plan to do the industrial scale-up, especially for the cooling rate.
Thank you for your advice. Will definitely make sure to add it very slowly. I am looking for just making a couple of litres so nothing industrial. As for adding the oil to water, it does make sense, I agree. I’ve not had stability issues so far with my creams probably because I made small amounts, if I do make large amounts I will add it the other way around to be on the safe side as you suggested.
Log in to reply.