Concentrate comprising at least one mannosylerythritol lipid and at least one polyglycerol and fatty acid ester

Abstract

The invention relates to a concentrate comprising at least one mannosylerythritol lipid and at least one polyglycerol and fatty acid ester, to a method for the production thereof, and to the uses of same, particularly as a thickening, foaming and/or cleaning agent.

Claims

1. A concentrate comprising: 20% to 70% by weight of at least one mannosylerythritol lipid (MEL), with respect to the total weight of the concentrate, and at least one polyglycerol fatty acid ester selected from the group consisting of polyglycerol-6 isostearate, polyglycerol-10 isostearate, polyglycerol-10 diisostearate, polyglycerol-6 laurate, polyglycerol-6 myristate, polyglycerol-6 stearate, polyglycerol-6 oleate, polyglycerol-10 oleate, polyglycerol-10 caprylate, polyglycerol-6 caprylate, polyglycerol-4 caprate, polyglycerol-4 laurate, polyglycerol-10 laurate, and combinations thereof, wherein a weight ratio mannosylerythritol lipid(s)/polyglycerol fatty acid ester(s) ranges from 1/3 to 2/1, and wherein a foam formed from an aqueous solution comprising said concentrate does not change its volume by more than 10% in 10 minutes from formation of the foam.

2. The concentrate according to claim 1, wherein the the weight ratio mannosylerythritol lipid(s)/polyglycerol fatty acid ester(s) ranges from 1/2 to 2/1.

3. The concentrate according to claim 1, comprising at least two MELs selected from the group consisting of MELs-A, MELs-B, MELs-C and MELs-D.

4. The concentrate according to claim 1, further comprising at least one glycerol fatty acid ester.

5. The concentrate according to claim 4, wherein the at least one glycerol fatty acid ester is a glycerol caprylic acid ester.

6. A composition comprising: at least one MEL, at least one polyglycerol fatty acid ester selected from the group consisting of polyglycerol-6 isostearate, polyglycerol-10 isostearate, polyglycerol-10 diisostearate, polyglycerol-6 laurate, polyglycerol-6 myristate, polyglycerol-6 stearate, polyglycerol-6 oleate, polyglycerol-10 oleate, polyglycerol-10 caprylate, polyglycerol-6 caprylate, polyglycerol-4 caprate, polyglycerol-4 laurate, polyglycerol-10 laurate, and combinations thereof, and water, wherein a weight ratio mannosylerythritol lipid(s)/polyglycerol fatty acid ester(s) is from 1/3 to 2/1, and wherein a total quantity of MEL(s) and polyglycerol fatty acid ester(s) is from 3% and 75% by weight of the total weight of the composition.

7. A composition in a form of a solution, comprising: at least one MEL, at least one polyglycerol fatty acid ester selected from the group consisting of polyglycerol-6 isostearate, polyglycerol-10 isostearate, polyglycerol-10 diisostearate, polyglycerol-6 laurate, polyglycerol-6 myristate, polyglycerol-6 stearate, polyglycerol-6 oleate, polyglycerol-10 oleate, polyglycerol-10 caprylate, polyglycerol-6 caprylate, polyglycerol-4 caprate, polyglycerol-4 laurate, polyglycerol-10 laurate, and combinations thereof, and water, wherein a weight ratio mannosylerythritol lipid(s)/polyglycerol fatty acid ester(s) is from 1/3 to 2/1, and wherein a total quantity of MEL(s) and polyglycerol fatty acid ester(s) expressed as a percentage by weight of the total weight of the composition is from 0.05 to less than 3.

8. A thickening agent, foaming agent and/or cleaning agent comprising the concentrate according to claim 1.

9. A method for cleaning a hard surface, dish, or human comprising applying to the hard surface, dish, or human the composition according to claim 6 with water.

10. A method for partially or totally replacing a surfactant in a shampoo or dishwashing detergent, comprising partially or totally replacing the surfactant with the concentrate according to claim 1, wherein the surfactant is selected from the group consisting of sodium lauryl sulphate, sodium lauryl ether sulphate, cocamide diethanolamine, and combinations thereof.

11. A shampoo or dishwashing detergent comprising the concentrate of claim 1.

12. A method of thickening water comprising adding the concentrate of claim 1 to water.

Description

(1) The invention will be better understood in the light of the following examples, given by way of illustration, with reference to the following figures:

(2) FIG. 1, which is a diagram representing the stability over time of foams formed on the surface of compositions prepared from concentrates according to the invention and starting from sulphated compounds or from MELs;

(3) FIG. 2, which comprises 2 photographs, a and b, illustrating the cleaning property of a composition according to the invention and of comparative compositions.

EXAMPLE 1: PREPARATION OF CONCENTRATES ACCORDING TO THE INVENTION

(4) 1. Obtaining MELs

(5) The MELs were obtained by a fermentation process comprising the following steps: culturing a yeast strain such as Pseudozyma aphidis in the presence of a vegetable oil (rapeseed) in order to obtain the MELs; and recovering the MELs thus obtained.

(6) At the end of the step of recovering the MELs, a first mixture of MELs (mixture of MELs 1A) is obtained, which has the following features: Content of MELs: 55% by weight Content of other components: 45% by weight (including 42% by weight of free fatty acids and triglycerides and 3% by weight of water and strain),
the percentages by weight being given with respect to the total weight of the mixture of MELs obtained.

(7) A step of purification of the mixture of MELs 1A was then carried out by adsorption chromatography on a silica column, with the use of a mixture of solvents having an increasing polarity gradient. A second mixture of MELs (mixture of MELs 1B) was thus obtained, which has the following features: Content of MELs: at least 98% by weight with respect to the total weight of the mixture of MELs obtained.

(8) In particular, each of the mixtures of MELs 1A and 1B comprises MELs-A at a content of 52% by weight, MELs-B at a content of 12% by weight, MELs-C at a content of 35% by weight, and MELs-D at a content of 1% by weight, the percentages by weight being given with respect to the weight of the total quantity of MELs.

(9) 2. Polyglycerol Fatty Acid Esters

(10) Radia® 7932 from OLEON was used. This product is composed of polyglycerol-4 capric acid esters (polyglycerol-4 caprate or polyglyceryl-4 caprate). The purity thereof in polyglycerol fatty acid esters is greater than 95%.

(11) Polyglycerol-10 oleic, capric and isostearic acid esters were prepared according to the esterification process with a fatty acid (oleic acid, Radiacid 0215 from OLEON, capric acid, Radiacid 610 from OLEON and isostearic acid, Radiacid 0909 from OLEON) and polyglycerol-10 from SPIGA NORD, in a 1/1 molar ratio. The fatty acid and polyglycerol are mixed in the presence of calcium hydroxide and heated at 220° C. until the acid number is less than 1 mgKOH/g.

(12) 3. Glycerol Fatty Acid Ester

(13) Radia® 7907 from OLEON was used. This product is composed of glycerol caprylic acid esters (glycerol monocaprylate or glyceryl monocaprylate).

(14) 4. Preparation of Concentrates According to the Invention

(15) The compounds are mixed manually in a suitable vessel, according to the formulations indicated in Table 1 hereinafter at a temperature of 60° C., until homogenization of the concentrate. Preferably, the temperature should not exceed 60° C.

(16) The different concentrates prepared are summarized in the following Table 1:

(17) TABLE-US-00001 TABLE 1 Concentrates according to the invention prepared in Example 1 Mixture of Radia ® Radia ® MELs 1B 7932 7907 PG-10 PG-10 PG-10 (%) (%) (%) Oleate caprylate isostearate Concentrate 1 25 75 — Concentrate 2 33.3 66.7 — Concentrate 3 50 50 — Concentrate 4 66.7 33.3 Concentrate 5 25 70.8 4.2 Concentrate 6 33.3 62.9 3.8 Concentrate 7 50 47.2 2.8 Concentrate 8 66.7 31.44 1.86 Concentrate 15 50 2.8 47.2 Concentrate 16 50 2.8 47.2 Concentrate 17 50 2.8 47.2 *The percentages indicated are percentages by weight with respect to the total weight of concentrate.

EXAMPLE 2: EVALUATION OF THE THICKENING PROPERTY OF THE CONCENTRATES ACCORDING TO THE INVENTION AND OF COMPARATIVE CONCENTRATES

(18) The thickening property of the concentrates according to the invention and of comparative concentrates was evaluated.

(19) 1. Equipment and Methods

(20) 1.1. Equipment

(21) The following products were used: concentrates 1 to 8 prepared in Example 1 the mixture of MELs 1B prepared in Example 1 Radia® 7932 (OLEON) Radia® 7907 (OLEON) demineralized water

(22) The following equipment was used: glass flasks a spatula a rheometer (TA Instruments AR 2000).

(23) 1.2. Methods

(24) Concentrates According to the Invention

(25) Concentrates 1 to 8 prepared in Example 1 were used.

(26) Preparation of the Comparative Concentrates

(27) The different compounds are mixed manually in a suitable vessel, at a temperature of 60° C., until the concentrate is homogenized. When MELs are used in the preparation of the concentrate, the temperature preferably should not exceed 60° C.

(28) The different comparative concentrates prepared are summarized in the following Table 2.

(29) TABLE-US-00002 TABLE 2 Comparative concentrates prepared in Example 2 Mixture of MELs Radia ® 7907 1B (%) Radia ® 7932 (%) (%) Comparative 0 100 — concentrate 9 Comparative 10 90 — concentrate 10 Comparative 100 0 — concentrate 11 Comparative 0 94.4 5.6 concentrate 12 Comparative 10 84.96 5.04 concentrate 13 Comparative 15 80.24 4.76 concentrate 14 *The percentages indicated are percentages by weight with respect to the total weight of concentrate.

Evaluation of the Thickening Property of Concentrates 1 to 14

(30) 10% by weight of concentrates 1 to 8 according to the invention and comparative concentrates 9 to 14 were respectively added to 90% by weight of water in glass flasks, the % by weight being indicated with respect to the total weight of each composition obtained. The addition of water in the flasks containing the different concentrates is carried out under manual stirring with a spatula.

(31) The dynamic viscosity of compositions 1 to 14 was evaluated, using a rheometer, at a temperature of 25° C. and at a speed of 10 rpm.

(32) The dynamic viscosity of the water (control) is 1 mPA.s.

(33) The appearance of the different compositions was also evaluated by the naked eye.

(34) The results are presented in Table 3 hereinafter.

(35) TABLE-US-00003 TABLE 3 Dynamic viscosity and appearance of compositions 1 to 14 prepared in Example 2 Viscosity (mPa .Math. s) Appearance Composition 1 Concentrate 1 44 Partial gel according to the according to the appearance, one invention invention + water phase Composition 2 Concentrate 2 48 Partial gel according to the according to the appearance, one invention invention + water phase Composition 3 Concentrate 3 586 Gel appearance, according to the according to the one phase invention invention + water Composition 4 Concentrate 4 980 Gel appearance, according to the according to the one phase invention invention + water Composition 5 Concentrate 5 56 Gel appearance, according to the according to the one phase invention invention + water Composition 6 Concentrate 6 400 Gel appearance, according to the according to the one phase invention invention + water Composition 7 Concentrate 7 500 Gel appearance, according to the according to the one phase invention invention + water Composition 8 Concentrate 8 70 Gel appearance, according to the according to the one phase invention invention + water Comparative Comparative 5 Clear water composition 9 concentrate 9 + appearance water Comparative Comparative 13 Two phases composition 10 concentrate 10 + water Comparative Comparative 5 Two phases composition 11 concentrate 11 + water Comparative Comparative 5.5 Clear water composition 12 concentrate 12 + appearance water Comparative Comparative 4.5 1 phase, cloudy, composition 13 concentrate 13 + translucent water Comparative Comparative >5 1 phase, cloudy, composition 14 concentrate 14 + translucent water

(36) The results show that compositions 1 to 8 comprising a concentrate according to the invention and water have a dynamic viscosity greater than that of pure water, and also have the appearance of a gel. On the other hand, compositions 9 to 14 comprising comparative concentrates have a viscosity close to that of water and do not have the appearance of a gel.

(37) A concentrate according to the invention makes it possible to increase the viscosity of water. It is understood here that a composition comprising a concentrate according to the invention and water will have a viscosity greater than that of water alone.

(38) The concentrate according to the invention thus has a good thickening property, and therefore can be used as a thickening agent.

(39) Moreover, a concentrate according to the invention makes it possible to give water the appearance of a gel.

EXAMPLE 3: EFFECT OF THE QUANTITY OF CONCENTRATE ON THE VISCOSITY OF WATER

(40) Compositions comprising different quantities of concentrate 2 according to the invention prepared in Example 1 and water were prepared according to the method described in Example 2.

(41) Viscosity measurements were carried out, in the same way as in Example 2.

(42) The results are shown in Table 4 hereinafter.

(43) TABLE-US-00004 TABLE 4 Effect of the quantity of concentrate on the viscosity of water Quantity of concentrate (%) Quantity of water (%) Viscosity (mPa .Math. s) 1 99 7 3 97 9 5 95 18 10 90 48 15 85 141 20 80 175 30 70 981 50 50 4380 *The percentages indicated are percentages by weight with respect to the total weight of the composition.

(44) The results show that increasing quantities of concentrates according to the invention make it possible to increase the viscosity of water.

EXAMPLE 4: EVALUATION OF THE FOAMING PROPERTY OF A CONCENTRATE ACCORDING TO THE INVENTION AND OF COMPARATIVE CONCENTRATES—EVALUATION OF THE STABILITY OF THE FOAMS OBTAINED

(45) 1. Equipment and Methods

(46) 1.1. Equipment

(47) The following products were used: concentrate 7 according to the invention prepared in Example 1 concentrates 15 and 16 prepared in Example 1 comparative concentrate 11 prepared in Example 2 SLES water.

(48) The following equipment was used: water bath, flow meter, a device for streaming air at 94 mL/min.

(49) 1.2. Methods

(50) The protocol implemented is based on that described in standard ASTM D892.

(51) 0.02%, 0.2% and 2% by weight of the concentrate 7 and respectively 99.98%, 99.8% and 98% by weight of water were added to test tubes, in order to obtain 3 compositions to be tested. Respectively 2% by weight of concentrates 15 and 16 were introduced into another two tubes, as well as 98% by weight of water.

(52) The test tubes were then placed in a temperature-controlled bath. After 15 minutes, the desired temperature of 25° C. was reached.

(53) Air was then pumped through a porous spherical stone diffuser in each composition to be tested. Thus small air bubbles are created, which form a dispersion of air in water. A foam is formed if the gas bubbles rise to the surface and are not broken beforehand. The gas-filled bubbles have walls of fine liquid lamellae. The compositions to be tested are maintained at a temperature of 25° C., and are subjected to air pumping for 5 minutes. The airflow is then stopped.

(54) The volume of foam formed on the surface of each of the compositions obtained from concentrate 7, from concentrate 15 and from concentrate 16 was evaluated, directly after stopping the airflow.

(55) The time necessary for the foam to break up is observed for the compositions comprising 0.2% and 2% by weight of concentrate 7, as well as for the compositions comprising respectively 2% by weight of concentrate 15 and 2% by weight of concentrate 16. More particularly, the stability of the foam on the surface of this composition was evaluated by measuring the volume of foam as a function of time. More specifically, the volume of foam was evaluated during 10 minutes after formation thereof, at time intervals of 60 seconds.

(56) Throughout the entire time necessary for the measurements, the compositions to be tested are maintained at a temperature of 25° C.

(57) An identical test was carried out for compositions to be tested comprising 0.2% by weight of comparative concentrate 11 (MELs), 0.2% and 0.5% by weight of sodium lauryl ether sulphate (SLES) and respectively 99.8%, 99.8% and 99.5% by weight of water, with respect to the total weight of the composition. SLES is used as a reference. SLES is a surfactant having very good foaming and detergent (cleaning) properties.

(58) 2. Results

(59) Foaming Property

(60) The results are presented in Table 5 hereinafter.

(61) TABLE-US-00005 TABLE 5 Foaming property of concentrates 7, 15 and 16 according to the invention and of comparative concentrate 11 and of SLES Quantity of Quantity of water Volume of foam Concentrate concentrate (%) (%) formed (mL)  7 0.02 99.98 210 0.2 99.8 500 2 98 700 15 2 98 760 16 2 98 700 11 0.2 99.8 600 SLES 0.2 99.8 500 SLES 0.5 99.5 700

(62) These results show that the volumes of foam formed on the surface of the compositions comprising concentrates 7, 15 or 16 according to the invention are large.

(63) A concentrate according to the invention thus has a very good foaming property. It is understood here that when a concentrate according to the invention is placed in contact with water, it allows the formation of a large volume of foam on the surface of the composition obtained.

(64) Moreover, the composition to be tested comprising 0.2% by weight of concentrate 7 according to the invention made it possible to obtain a foam having a volume similar to a foam obtained with a composition comprising 0.2% by weight of sodium lauryl ether sulphate and 99.8% by weight of water, with respect to the total weight of the composition.

(65) A concentrate according to the invention is a good replacement solution for sodium lauryl ether sulphate, or for sodium lauryl sulphate.

(66) Stability of the Foams

(67) The results are presented in FIG. 1.

(68) These results show that the foams obtained with concentrates 7, 15 and 16 according to the invention were stable during the 10 minutes of the test, i.e. the volume of these foams did not decrease or decreased very little in 10 minutes.

(69) The foams obtained with SLES, in particular that obtained from the composition comprising 0.2% by weight of SLES, were less stable during the 10 minutes of the test, a reduction in the volume of these foams being visible in FIG. 1.

(70) Thus, the foam formed on the surface of a composition comprising a concentrate according to the invention is stable. By “stable” is meant that the volume of foam formed does not decrease or decreases very little over time, i.e. by less than 50 mL in 10 min, preferentially less than 25 mL in 10 min.

(71) Although the composition comprising 0.2% by weight of comparative concentrate 11 forms a large volume of foam, this volume is not stable and drops rapidly (−100 mL in 1 minute, −350 mL in 10 minutes), as can be seen in FIG. 1.

EXAMPLE 5: EVALUATION OF THE SURFACE-ACTIVE PROPERTY OF CONCENTRATES ACCORDING TO THE INVENTION AND OF COMPARATIVE CONCENTRATES

(72) 1. Equipment and Methods

(73) 1.1. Equipment Concentrates 3 and 7 according to the invention prepared in Example 1 Pure water KRUSS K100 tensiometer

(74) 1.2. Methods

(75) Surface Tensions

(76) Concentrates 3 and 7 according to the invention were added at different concentrations to pure water and measurements of surface tensions were taken.

(77) The surface tension was measured using the tensiometer, using the Wilhelmy plate method.

(78) The surface tension of the pure water was also measured. It is 71.4 mN/m.

(79) The results are shown in Table 6 hereinafter.

(80) TABLE-US-00006 TABLE 6 Surface tensions Quantity of concentrate in Concentrate water (%) Surface tension (mN/m) 3 0.02 27.6 3 0.2 27.6 3 2 27.3 *The percentages indicated are percentages by weight with respect to the total weight of the composition.

(81) The results presented in Table 6 show in particular that a concentrate according to the invention makes it possible to reduce the surface tension of water. A concentrate according to the invention can thus for example be used in cleaning applications.

(82) Interfacial Tensions

(83) Concentrates 3 and 7 according to the invention, followed by mineral oil, were added at different concentrations to pure water, and measurements of interfacial tensions were taken.

(84) The interfacial tension of a water/mineral oil preparation was also measured. It is approximately 43 mN/m.

(85) The results are shown in Table 7 hereinafter.

(86) TABLE-US-00007 TABLE 7 Interfacial tensions Quantity of concentrate in water Interfacial tension Concentrate (%) (mN/m) 3 0.02 1.1 3 0.2 0.6 3 2 0.2 7 0.02 1.1 7 0.2 0.6 7 2 0.2 *The percentages indicated are percentages by weight with respect to the total weight of the composition.

(87) The values for interfacial tensions obtained with the concentrates according to the invention are sufficiently low for a concentrate according to the invention to have the capacity to disperse a mineral oil in water. A concentrate according to the invention can thus for example be used in cleaning applications.

EXAMPLE 6: CLEANING PROPERTY OF A COMPOSITION ACCORDING TO THE INVENTION—APPLICATION IN COSMETICS

(88) 1. Equipment and Methods

(89) 1.1. Equipment

(90) The following products were used: composition 7 according to the invention prepared in Example 2 composition 3 according to the invention prepared in Example 2 sodium lauryl sulphate (VWR®, 100% pure) water.

(91) The following equipment was used: glass jars with lids, white caps of 15-mL bottles makeup (foundation, True Match™, Super Blendable Makeup, L'OREAL®).

(92) 1.2. Methods

(93) Water and the composition to be tested were added to a glass jar.

(94) A white cap is then covered with makeup, then immersed in the glass jar. The glass jar is closed with its lid and then subjected to stirring at 244 rpm for 60 minutes.

(95) At the end of 60 minutes, the proportion of makeup that was removed from the cap and transferred to the mixture of water/composition to be tested is measured.

(96) The percentage of makeup removed is calculated according to the following formula:
100−(weight of makeup on the cap before the experiment−weight of makeup on the cap after the experiment)×100/weight of makeup on the cap before the experiment.

(97) In Experiment 1 below, this method was utilized in order to evaluate the makeup removal property of composition 7 according to the invention prepared in Example 2 and of comparative compositions. The comparative compositions comprise SLS. Like SLES, SLS is a surfactant having very good foaming and detergent (cleaning) properties.

(98) In Experiment 2 below, this method was utilized in order to evaluate the makeup removal property of composition 3 according to the invention prepared in Example 2.

Experiment 1

(99) The detail of the tests carried out and the results are presented in Table 8 hereinafter.

(100) TABLE-US-00008 TABLE 8 Tests and results of Experiment 1 % of makeup Test Composition to be tested removed Test 1 1 g of composition 7 according to the invention 95.92 in 49 g of water Test 2 5 g of composition 7 according to the invention 99.07 in 49 g of water Comparative 0.05 g of sodium lauryl sulphate in 50 g of 90.70 test 3 water Comparative 0.25 g of sodium lauryl sulphate in 50 g of 98.37 test 4 water Test 5 Water alone 71.72 (control)

(101) The results of Experiment 1 are also presented in FIG. 2 (comprising photographs a and b).

(102) It can be seen in the photograph that the proportion of makeup that was removed from the cap and transferred to the mixture of water/composition 7 according to the invention (glass jars marked 1 and 2) is greater than that removed from the caps and transferred into the water/comparative composition mixtures (glass jars marked 3 and 4) and into water alone (glass jar marked 5).

(103) This is also apparent from photograph b, which shows the quantity of makeup that was removed from the caps at the end of each test 1 to 5.

(104) The cap numbered 0 in photograph b corresponds to a control cap before insertion in a glass jar.

(105) These results show that composition 7 according to the invention has a makeup removal property equivalent to, or even greater than, that of the comparative compositions based on sodium lauryl sulphate.

Experiment 2

(106) The detail of the tests carried out and the results are presented in Table 9 hereinafter.

(107) TABLE-US-00009 TABLE 9 Tests and results of Experiment 2 % of makeup Test Composition to be tested removed Test 6 1 g of composition 3 according to the invention in 90.99 49 g of water Test 7 5 g of composition 3 according to the invention in 97.69 49 g of water Test 8 Water alone 70.76 (control)

(108) It can be seen that the proportion of makeup that was removed from the cap and transferred to the mixture of water/composition 3 according to the invention (tests 6 and 7) is appreciably greater than that removed from the caps and transferred into water alone (test 8).

EXAMPLE 7: REPLACING COCAMIDE DIETHANOLAMINE (COCAMIDE DEA) AND/OR SODIUM LAURYL ETHER SULPHATE (SLES) BY A CONCENTRATE ACCORDING TO THE INVENTION

(109) Concentrate 7 according to the invention was used in the preparation of cleaning compositions of the detergent type for dishwashing or shampoo, by replacing cocamide DEA and/or SLES.

(110) Cocamide DEA is a surfactant having good foaming and thickening properties.

(111) The viscosity of the prepared compositions after one day was evaluated according to the method described in Example 2.

(112) The volume of foam formed on the surface of the different compositions was evaluated according to the method described in Example 4.

(113) The detail of the prepared cleaning compositions and the results of the different measurements are indicated in Table 10 hereinafter. The cleaning compositions are prepared by simple mixing of the components thereof.

(114) TABLE-US-00010 TABLE 10 Prepared compositions and results of tests 9 to 16 of Example 7 Test 9 Test 10 Test 11 Test 12 Test 13 Test 14 Test 15 Test 16 %* Euramid V 3 (cocamide DEA) SLES (28% active) 45 45 40 30 20 10 5 0 Concentrate 7 0 3 8 18 28 38 43 48 according to the invention Sodium benzoate 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 NaCl 0 or 2 0 or 2 0 or 2 0 or 2 0 or 2 0 or 2 0 or 2 0 or 2 Water qsf 100 qsf 100 qsf 100 qsf 100 qsf 100 qsf 100 qsf 100 qsf 100 pH 5-6 5-6 5-6 5-6 5-6 5-6 5-6 Viscosity after 1 40 10 120 6100 7500 24500 29000 25000 days (without NaCl) Viscosity after 1 6300 2020 1320 4100 8600 15200 17700 20900 days (with NaCl) Appearance clear clear clear Foam, Foam, Foam, Foam, Foam, cloudy cloudy clear cloudy cloudy Foam after 1 850 760 780 770 800 900 780 850 minute (with NaCl) Foam after 10 860 760 780 770 800 880 760 830 minutes (with NaCl) *The percentages indicated are percentages by weight with respect to the total weight of the composition.

(115) The results show that replacing SLES with increasing quantities of the concentrate according to the invention results in an increase in viscosity. This increase in viscosity is obtained despite the absence of cocamide DEA and NaCl.

(116) Furthermore, the volume of foams formed on the surface of the different compositions is large.

(117) A concentrate according to the invention is therefore a good solution for replacing cocamide DEA, sodium lauryl ether sulphate and/or sodium lauryl sulphate.

(118) More particularly, a detergent composition prepared from a concentrate according to the invention will have both a high viscosity and a good foaming property.

(119) Concentrates 15 and 17 according to the invention were also used in the preparation of cleaning compositions of the detergent type for dishwashing or shampoo, by replacing cocamide DEA and/or SLES (tests 17 and 18 respectively).

(120) The pH of these compositions was adjusted to 5.8 by adding citric acid.

(121) The viscosity of the prepared compositions after one day was evaluated according to the method described in Example 2.

(122) The volume of foam formed on the surface of the different compositions was evaluated according to the method described in Example 4.

(123) The detail of the cleaning compositions prepared and the results of the different measurements are indicated in Table 11 hereinafter. The cleaning compositions are prepared by simple mixing of the components thereof.

(124) TABLE-US-00011 TABLE 11 Prepared compositions and results of tests 17 and 18 of Example 7 Test 17 Test 18 %* Euramid V 3 3 (cocamide DEA) SLES (28% active) 20 20 Concentrate 15 28 according to the invention Concentrate 17 28 according to the invention Sodium benzoate 0.5 0.5 NaCl 0 0 Water qsf 100 qsf 100 pH 5.8 5.8 Viscosity after 1 7230 9032 day (without NaCl) Appearance cloudy cloudy Foam after 10 770 820 minutes *The percentages indicated are percentages by weight with respect to the total weight of the composition.

(125) Again, the results show that the concentrates according to the invention are a good solution for replacing SLES.

(126) In comparison with test 13 using concentrate 7, tests 17 and 18 show that concentrates 15 and 17 also allow an increase in viscosity, in particular in the absence of NaCl.

(127) Furthermore, the volume of the foams formed on the surface of the different compositions is large.

(128) A cleaning composition, such as a shampoo, prepared from a concentrate according to the invention will have both a high viscosity and a good foaming property.