Process of compacting a microporous fat powder and compacted powder so obtained
The invention relates to a compacted microporous fat powder that can suitably be used as an oil structuring agent. The compacted microporous fat powder has a freely settled density in the range of 90-600 g/l; a particle size distribution with at least 90 vol. % of the particles having a diameter in the range of 20 to 600 μm; a maximum G′ i /G′ d ratio of more than 2.0, wherein G′ represents the elastic modulus at 10° C. of a dispersion of 2 wt. % of the compacted fat powder in glycerol, and wherein the maximum ratio is determined by recording G′ i whilst increasing the frequency from 0.1 to 15 s −1 , by subsequently recording G′ d whilst decreasing said frequency from 15 to 0.1 s −1 and by calculating the ratio G′ i /G′ d at the frequency at which said ratio is highest.
1. A compacted microporous fat powder, comprising:
a fat content of at least 50 wt. %;
a solid fat content at 20° C. (N 20 ) of at least 10 wt. %;
a free flowing density in the range of 90-600 g/l;
a particle size distribution with at least 90 vol. % of the particles having a diameter in the range of 3 to 400 μm;
a maximum G′ i /G′ d ratio of more than 2.0,
wherein G′ represents the elastic modulus at 10° C. of a dispersion of 2 wt. % of the compacted fat powder in glycol, and wherein the maximum G′ i /G′ d ratio is determined by recording G′ i while increasing the frequency from 0.1 to 15 s −1 , by subsequently recording G′ d while decreasing said frequency from 15 to 0.1 s −1 , and by calculating the ratio G′ i /G′ d at the frequency at which said ratio is highest;
wherein the compacted microporous fat powder has a full width at half maximum of the first order long spacing X-diffraction peak that is less than 0.00056× free flowing density +0.213.
2. The compacted microporous fat powder of claim 1 , wherein the G′ i /G′ d ratio is at least 2.5.
3. The compacted microporous fat powder of claim 1 , wherein the G′ i /G′ d ratio is at least 3.0.
4. The compacted microporous fat powder of claim 1 , wherein the compacted microporous fat powder contains less than 30 wt. % of ingredients other than solid fat particles.
5. The compacted microporous fat powder of claim 1 , wherein the compacted microporous fat powder contains less than 30 wt. % of free liquid oil.
6. A food product comprising the compacted microporous fat powder of claim 1 and an oil, wherein the compacted microporous fat powder is combined with the liquid oil in a weight ratio in the range of 1:100 to 40:100.
7. The food product of claim 6 , wherein the food product comprises at least 18 wt. % of a continuous fat phase.
8. The food product of claim 6 , wherein the food product comprises a spread, margarine, or shortening.
9. A method of producing a food product, comprising the step of:
mixing the compacted microporous fat powder of claim 1 with a liquid oil to produce the food product, wherein the compacted microporous fat powder is combined with the liquid oil in a weight ratio within the range of 1:100 to 40:100.
10. The method of claim 9 , further comprising the following step:
packaging the food product, wherein the mixture comprising the compacted microporous fat powder and the oil is maintained at a temperature below the melting point of the fat powder until the food product is packaged.
11. The compacted microporous fat powder of claim 1 , wherein the compacted microporous fat powder was produced by an extruder configured to have a barrel comprising a plurality of venting openings having a shorter dimension that exceeds the volume weighted average diameter of an input fat powder feed and that is less than 10 mm.
12. The compacted microporous fat powder of claim 1 , wherein the G′ i /G′ d ratio is at least 4.0.