Dear Nabil Adrar ,
The transition temperature is not available (presumably because this is a mixture), but according to:
http://www.lipoid.com/en/search/node/phosphatidylcholine%3Fopenedprd%3Dtrue%26lastedit%3Dfilter_a%26filter_a%3Dpharmaparenteral%26showproduct%3D2133?openedprd=true&lastedit=filter_a&filter_a=pharmaparenteral&showproduct=2093
LIPOID S75 consists of fat free soybean phospholipids with 70% phosphatidylcholine.
The following link answers your question related to the fatty acid compostion:
https://www.researchgate.net/post/What_is_Lipoid_s75-3_composition_and_structure_and_Where_can_it_be_isolated_from
As you see the answer of @Thibaut Fourniols says it all:
“Lipoid S75-3 is not sold anymore by the company Lipoid Gmbh. But based on the literature (http://www.google.com/patents/US9333180 ), we can find that it is very similar to Lipoid S75 (linked), with the difference that lecithins are hydrogenated. It means the following composition hydrogenated soy bean phospholipids :
Phosphatidylcholine hydrogenated ~69%
Phosphatidylethanolamine ~9%
Typical fatty acid composition in % of total fatty acids:
Palmitic acid 12 - 17 %
Stearic acid 2 - 5 %
Oleic acid 8 - 12 %
Linoleic acid 58 - 65 %
Linolenic acid 5 - 9 % “
His answer includes a MSDS as well.
Best regars.
Dear Rob Keller,
Now at least I can calculate and make a theoritical estimation of its transition temperature basing on the fatty acid composition. THANK you so much for the links 🙏
Sincerely
According to my calculations, considering the lipid composition (type and amount of phospholipids, type and amount of the acyl chain), the average phase transition temperature of Lipoid S75 would be around around -32 °C.
Greetings
According to the following paper, soybean lecithin has a Tc between -30 and -20 °C.
https://www.sciencedirect.com/science/article/abs/pii/0009308469900401
Greetings,
Nabil
Hello,
Can anyone explain why emulsion prepare with LIPOID S 75 & LIPOID S 100 leads to thick paste formation during homogenization ??
Dear Saurabh,
What is your lipid/water ratio? It would be too high! What about temperature?
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