They can be of animal origins but not always. I found this info on the vegieglobal website. I was after that answer too but this is all i can find so far. Hope it helps a little bit...
No. Soy lecithin 471 is specifically made from soy protein and is suitable for vegetarian and vegan consumption. Emulsifier 471 is mainly made up of glycerol and natural fatty acids from plant origin but animal products may be used as well. Only the producer/manufacturer can give information on the origin.
Emulsifier 471 contains pig fat.
The country code and area code of Acuitzeramo, Mexico is 52, (01)471.
The country code and area code of Emmaboda, Sweden is 46, (0)471.
The country code and area code of Satkhira, Bangladesh is 880, (0)471.
The country code and area code of Gulu, Uganda is 256, (0)471.
The country code and area code of Abiko- Chiba, Japan is 81, (0)471.
The country code and area code of Huhehaote- NM, China is 86, (0)471.
The country code and area code of Thiruvananthapuram- Thiruvananthapuram, India is 91, (0)471.
The country code and area code of Stepanakert- Nagorno Karabagh, Armenia is 374, (0)471.
The country code and area code of Kursk region, Russian Federation is 7, (8)471.
the fraction of 471 = 471/1