omega-scar
Rising Star
Can somebody take the trouble to provide any links to forum posts or anything else describing the process of defatting ? Thanks.
After a heap of shaking, swirling whatever give it 10 mins to settle out cleanly into layers.omega-scar said:How long should the mixed acidic juice be left with the solvent together, before separating it?
Theoretically yes, but in SWIY's case it seems that all of the solvent has emulsified.omega-scar said:problem is , the whole jar has only two layers. The yellow big part and the foam-like thing at the surface. Shouldn't it have 3 layers (acidic juice, solvent, emulsion) ? Please excuse SWIM's lack of knowledge , as SWIM sayd it is his first extraction.
stoned_ape said:SWIM has a question concerning this defatting process:
After pouring the solvent over the acid-soup, how long and in which way should the jar be shaken so that there will be minimal emulsions to deal with?
endlessness said:stoned_ape said:SWIM has a question concerning this defatting process:
After pouring the solvent over the acid-soup, how long and in which way should the jar be shaken so that there will be minimal emulsions to deal with?
stir with a long object instead of shaking, this reduces chances of emulsions
endlessness said:well I dont know... you'll get the feeling, there is no rule.. I guess most gets picked up in the first seconds of contact of mixing, but I guess its more effective if one stirs for a few seconds, lets it settle, stirs again, etc, doing cycles of stiring over, lets say, 15 mins, and then separate
What endless is describing is a liquid-liquid extraction which is exactly what your defatting step is your goodies are in the acidic aqueous layer and you want to extract the fats and oils out of there with a non-polar solvent. So just follow his advice about stirring, whip it up good and then leave for a min, whip up some more etc. Yeah 200ml will be fine just note the colour when you separate it out and if you feel its too yellow or dirty extract it 1 or 2 more times. Try evaporating an extract down fast with a fan and seeing exactly what you removed.stoned_ape said:endlessness said:well I dont know... you'll get the feeling, there is no rule.. I guess most gets picked up in the first seconds of contact of mixing, but I guess its more effective if one stirs for a few seconds, lets it settle, stirs again, etc, doing cycles of stiring over, lets say, 15 mins, and then separate
And how long will it take for the solvent to cleanse the acid soup of it's oily and fatty stuff, if SWIM would be using 200ml of solvent the first time? What amount of time does it take, until SWIM can remove the solvent?
mumbles said:What endless is describing is a liquid-liquid extraction which is exactly what your defatting step is your goodies are in the acidic aqueous layer and you want to extract the fats and oils out of there with a non-polar solvent. So just follow his advice about stirring, whip it up good and then leave for a min, whip up some more etc. Yeah 200ml will be fine just note the colour when you separate it out and if you feel its too yellow or dirty extract it 1 or 2 more times. Try evaporating an extract down fast with a fan and seeing exactly what you removed.stoned_ape said:endlessness said:well I dont know... you'll get the feeling, there is no rule.. I guess most gets picked up in the first seconds of contact of mixing, but I guess its more effective if one stirs for a few seconds, lets it settle, stirs again, etc, doing cycles of stiring over, lets say, 15 mins, and then separate
And how long will it take for the solvent to cleanse the acid soup of it's oily and fatty stuff, if SWIM would be using 200ml of solvent the first time? What amount of time does it take, until SWIM can remove the solvent?
q21q21 said:it is supposed to be done until the defatting liquid is clear. I don't have the Phragmites, you'll have to tell me how much to use
isaaczibre said:Most of the people in this thread have been inactive for over a year lol. It's back from 2009.