Patent ID: 8394975

Claim:
Method for bleaching fats and/or oils, wherein a crude oil derived from animal or plant material is provided; the crude oil is treated with a bleaching material comprising a clay material having: a surface area of 180 to 300 m 2 /g; a total pore volume of 0.5 to 0.7 ml/g; wherein at least 60% of the total pore volume are provided by pores having a pore diameter of at least 140 Å, at least 40% of the total pore volume is provided by pores having a pore diameter of less than 250 Å and at least 15% of the total pore volume are provided by pores having a pore diameter of 140 to 250 Å and less than 20% of the total pore volume is formed by pores having a diameter of >800 Å; a SiO 2 content of between more than 60 wt. % and less than 75 wt. %; an aluminum content, calculated as Al 2 O 3 , of between less than 12 wt. % and more than 2 wt. %; and said clay material having an amorphous structure according to XRD data; and the bleached oil is separated from the used bleaching material.