FATBLEND

MELANGE GRAISSEUX

English Abstract

The invention is concerned with fatblends that display
an improved gloss-retention when used in chocolate
coatings. The fatblends consist of hardened midfractions
of soybean oil and cottonseed oil.

Claims

8

THE EMBODIMENT OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. Fatblend, useful in chocolate compositions,
comprising a mid-fraction of hardened, fractionated
soybean oil (BO) and a mid-fraction of hardened,
fractionated cottonseed oil (CS), wherein the
weight ratio of the two mid-fractions (B ?) is less
than 1Ø CS

2. Fatblend, according to Claim 1, wherein the ratio
of the mid-fractions is 10:90 to 40:60.

3. Fatblend, according to Claim 1, wherein the ratio
of the mid-fractions is 25:75 to 55:65.

4. Fatblend, according to Claim 1, wherein the blend
also contains up to 15 wt%, preferably 2-8 wt%, of
the olein-fraction, obtainable by fractionation of
a blend of hardened soybean oil and hardened
cottonseed oil.

5. Fatblend, according to Claim 1, wherein the
hardened oil is obtained by a catalytic hardening
process that leads to a product with more than 40%
trans-hardened oil.

6. Fatblend, according to Claim 1, wherein the mid-
fraction of fractionated oil is obtained by wet-
fractionation of the hardened fat with acetone.

7. Fatblend, according to Claim 1, consisting of two
separately obtained mid-fractions of hardened and
fractionated soybean and cottonseed oil.

8. Fatblend according to Claim 1, consisting of a mid-
fraction, obtained by a combined hardening and

9

fractionation of a blend of soybean oil and
cottonseed oil.

9. Chocolate coating with improved gloss-retention,
which contains a fatblend according to Claim 1.

10. Process for the preparation of a fatblend wherein
soybean oil, cottonseed oil or a mixture of these
are (is) hardened catalytically, whereupon the
hardened product(s) is (are) wet-fractionated,
either separately or combined, and (a) mid-
fraction(s) is (are) separated, which in case more
than one mid-fraction is obtained, are mixed, so
that a fatblend with a weight ratio soybean-oil
components: cotton seed oil components of less than
1.0 is recovered.

11. Process according to Claim 10, wherein the
catalytic hardening is carried out with a
sulfidised Ni-catalyst.

12. Process according to Claim 10, wherein the wet-
fractionation is carried out with acetone in a
ratio of more than 3 vol. units acetone per weight
unit of oil.

13. Process according to Claim 10, wherein the
following steps are carried out in the
fractionation step: mixing of the components
including acetone at T above 35°C, cooling the
mixture to -15° to +15°C, separating the mixture
and separating a solid fraction, solving this solid
fraction at T above 35°C in acetone, cooling again
to 16-24°C, separating and working up the acetone
fraction in order to collect the required mid-
fraction.



14. Chocolate products, containing a coating as claimed
in Claim 10.

Description

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F A T B L E N D

A fatblend, that contains mid-fractions of both
hardened and fractionated soy bean oil and cottonseed
oil are known. A commercial product, Kaomel from
Unilever, contains the mid-fractions mentioned above.
This product already shows a reasonable to good gloss-
retention of chocolate coatings, when used in it. We
have now found a new fatblend, that provides an even
better gloss-retention when used in chocolate coatings.

Thus our invention concerns in the first place with
fatblends, comprising a mid fraction of hardened
fractionated soy bean oil and a mid fraction of
hardened, fractionated cottonseed oil, wherein the
weight ratio of the two mid-fractions BO is less than
CS
1,0, preferably this ratio is 10:90 - 40:60, most
preferred is a ratio of 25:75 - 55:65.
By using these blends in chocolate coatings can be
obtained with excellent gloss-retention, whereas the N-
values of these blends are according to the standards,
required for such blends. Especially the N30 and N35
values, which are very important, meet these standards.

Because of the excellent gloss-retention of our
composition it is no longer necessary to add an
emulsifier to the composition in order to improve the
gloss-retention.

Sometimes it is helpful, e.g. when the hardness of the
blend needs to be corrected, to add some (up to 15 wt%,
preferably 2-8 wt%) of the olein fraction, that is
obt~in~hle by the fractionation of a blend of hardened
soy bean oil and hardened cottonseed oil, to the

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fatblend. Soybean oil and cottonseed oil from every
source can be used to prepare our mid-fractions.
The best fatblends are obtained, when these blends
contain a relatively high amount of trans-hardened oils.
These trans-hardened oils are obtained, when the
hardening of the oils is carried out, e.g. with a
sulfidised Ni-catalyst, e.g. Pricat 9908~ which
contains about 0.1-0.2 wt% Ni and which is used at
pressures of about 1 bar and temperatures of about 150-
250C. This way hardened oils can be obtained thatconsist of more than 40% of trans-hardened oils.

The fractionation product is obtained by wet
fractionation. The solvents normally used are hexane
and acetone. When acetone is used the fractionation is
carried out by using more than 3 vol units acetone per
- weight unit of oil (so: e.g. 5 l acetone per 1 kg oil).

The fractionation is proceeded by mixing the ingredients
(oil mixture) with acetone of 35C or more in the
appropriate ratio. The mixture is cooled to about -15
to +15C, e.g. 0C. At this temperature a crystallised
product can be separated from a supernatent liquid e.g.
by filtering or centrifugation. The solid so obtained
is mixed again with acetone of 35C or more until a
solution is obtained. This solution is cooled to a
temperature of 16-24C, depending on the product that is
desired. Here again a solid product will be formed, that can
be separated from a liquid acetone containing fraction.
After working up of the acetone fraction, by removing the
acetone, the required mid-fraction is obtained.

The compositions according to the invention can be
obtained in different ways. The preferred way consists
of making a blend of unhardened soybean oil and
cottonseed oil, hardening this blend in the way
described above, wet fractionating the hardened product

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as described above, where upon the desired product is
obtained.
However in another embodiment the soybean oil and
cottonseed oil are treated separately. This way two
mid-fractions are obtained after the wet fractionations.
These fractions can be admixed to give the required
product. In another sequence the two unhardened oils
can be hardened separately, after which the hardened
oils are combined and wet-fractionated as a blend.
Of course also chocolate coatings and food products
containing the blends of the invention are part of the
invention.

Example I
A blend was made of 30 parts by weight of soybean oil
and 70 parts by weight of cottonseed oil. This blend
was hardened using a Ni-catalyst (0.1 wt% Ni), which was
sulfidised, at 1 bar and 195C.
The product of the hardening was wet-fractionated by
adding 500 vol. parts of acetone, which had a
temperature of 43C. After cooling to 0C and filtering
a solid fraction was removed (60 parts by weight).
To the solid fraction acetone was added and this
fraction was warmed up to 43C. Cooling again, now to
20C and filtering gave a solid fraction (22 parts by
weight) and an acetone fraction. After removal of the
acetone a mid-fraction (38 parts by weight) was
obtained. The properties and analytical data of the
products obtained are mentioned in the tables I (for the
trans-hardened blends) and II (for the blend of mid-
fractions).

Example II
Example I was repeated. The ratio BO:CS however was 40
B0 : 60 CS. The data of the products are mentioned in

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the tables I and II.
The amount of mid-fraction obtained was 41 parts by
weight.

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Table I
Properties and analysis of trans-hardened blend

B0 40 30
CS 60 70

N20 63 65
N25 48 51
N30 30 33
N35 12 16
N40 1.0 0.4
Slip m. pt C 37.3 38.0
I.V. 70.1 66.7
Fame
C12 0.5 0.5
C16 17.8 18.9
C-18:0 7.8 9.1
C18:1 73.6 69.6
Carbon Nos.
C48 0.9 1.5
C50 10.6 11.9
C52 35.8 36.9
C54 50.5 47.0
C56 1.6 1.8

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Table II
Properties and analYsis of fractionated blend
(mid-fraction)
B0 40 30 acc to
CS 60 70 standard
___ __________ _____
N-values ns s* ns s* ns
_____ ___________________________________________
N20 92.9 83.7 90.0 80.2 86-96
N25 79.3 77.9 75.8 73.1
N30 48.2 58.7 44.2 53.9 41-49
N35 6.2 10.5 5.0 7.3 max. 8
N40 0 0 0 0
_____________ _ __________________
s*=stab
40h/26C
slip
mp. C 35.3 34.6 33-35
I.V. 65.6 64.1 57-60
______ _________________________________
Fame
C14 0.5 0.6
C16 19.7 19.9
C18:0 7.1 8.1
C18:1 71.4 69.4
_____ ___________________________________________
Carb.Nos.
C48 0.8 1.1
C50 10.6 11.3
C52 42.2 42.4
C54 44.1 42.4
C56 1.6 1.7
_______ ______

ExamPle III

Example I was repeated. But this time 90 parts by weight
of the obtained mid-fraction was blended with 10 parts

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by weight of the oleine fraction obtained after
removing the acetone of the liquid fraction, where from
the solid fraction was removed. This product prossessed
the following N-values:

NS acc. to stand
N 20 79.8 77 - 87
N 25 60.0 60 - 66
N 30 31.0 29 - 35
N 35 2.5 max. 2.5.