EP3346886A1 - Procede de commande d'un cuiseur a riz et cuiseur a riz pour la mise en oeuvre d'un tel procede - Google Patents
Procede de commande d'un cuiseur a riz et cuiseur a riz pour la mise en oeuvre d'un tel procedeInfo
- Publication number
- EP3346886A1 EP3346886A1 EP16775807.7A EP16775807A EP3346886A1 EP 3346886 A1 EP3346886 A1 EP 3346886A1 EP 16775807 A EP16775807 A EP 16775807A EP 3346886 A1 EP3346886 A1 EP 3346886A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rice cooker
- rice
- controlling
- soaking
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/004—Cooking-vessels with integral electrical heating means
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
- A23L7/10—Cereal-derived products
- A23L7/196—Products in which the original granular shape is maintained, e.g. parboiled rice
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
- G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time
Definitions
- the present invention relates to a method of controlling a rice cooker and a rice cooker for the implementation of such a method.
- the process according to the invention is particularly suitable for cooking white rice to preserve the constituent amino acids and reduce the glycemic index (up to 30%) of the rice while maintaining the organoleptic qualities of the rice.
- the object of the invention is to provide a method of controlling a rice cooker to reduce the glycemic index of rice or other cooked cereals and to increase the amount of at least one of the amino acids of cooked white rice .
- a control method of a rice cooker comprising a housing closed by a lid, the housing being equipped with a main heating element, a tank placed in the housing, a heating element the upper edge of the tank, a heating element cover, a first temperature sensor located near the bottom of the tank and a second temperature sensor placed in the lid, the method comprising a dipping step during which the heating elements are controlled to maintain for a period of between 8min and 1h, a set temperature of between 40 and 75 ° C inside the tank; a heating step starting at the end of the determined duration of soaking during which, the heating elements are controlled to reach a set temperature greater than 85 ° C inside the tank; a firing step, comprising a first phase starting as soon as the heating set point temperature is reached during which the heating elements are controlled to maintain the set temperature inside the tank for a determined duration of between 2 and 15 min.
- the process comprises a step of removing the rapidly digestible starch.
- the step of removing the rapidly digestible starch comprises a step of draining the soaking water and a step of filling the tank with a determined amount of water made after the soaking step .
- the drainage step and the filling step are performed manually by the user.
- the drainage step and the filling step are carried out automatically by means of a drainage device mounted in the rice cooker and a supply of clear water from the rice cooker.
- the rapidly digestible starch removal step comprises a step of rinsing the rice after the baking step.
- the rinsing step is carried out with water at a temperature of between 50 ° and 80 ° C.
- the method comprises a step of drying the rice after the rinsing step.
- the method comprises a second phase of the firing step during which the heating elements are controlled to maintain the set temperature inside the tank lower than the firing temperature of the first phase of the firing stage. firing step for a specified period of time between 5 and 15 min.
- the set temperature of the second phase of the firing step is 100 ° C. and the duration is 10 min.
- the method comprises a waiting step during which the heating elements are stopped, and the lid is kept in the closed position for a period of between 2 and 5 min.
- the set temperature of the first phase of the firing step is between 97 and 105 ° C and the duration is between 2 and 6 min.
- the set temperature of the soaking step is 70 ° C and the duration of the soaking step is about 13 min.
- the invention also relates to a control device of a rice cooker specially adapted for implementing the method according to the invention and a rice cooker comprising the control device according to the invention.
- FIG. 1 is a schematic view of a rice cooker making it possible to implement the method according to the invention
- FIG. 2 represents the temperature versus time diagram corresponding to the control method according to the invention.
- the first is cooking in excess of boiling water for 5 to 30 minutes for white rice depending on the variety and degree of pre-cooking rice.
- the second is cooking in a rice cooker with an adjusted amount of water.
- a fixed water-rice ratio is used, generally ranging from 1: 1 to 4: 1. This ratio varies with the quality sought by the consumer and the variety.
- the temperature and pressure ranges used are 100-120 ° C and 1 -2 bar respectively, with in some cases pre-cooking phases called soaking steps.
- the total cooking time can vary from 10 minutes to 2 hours (for brown rice).
- the last method is "pilaf" cooking, by making a volume of rice in fat until the grains are translucent. 1.5 to 2.5 volumes of water are then added depending on the type of rice. The whole is cooked under cover with soft fires until total absorption of the cooking water.
- Rice is a cereal rich in starch and low in protein.
- the composition of rice varies according to the botanical origin of the latter and its transformation.
- the grain being a reserve organ, its albumen consists of cells containing a large number of starch storage organelles: amyloplasts.
- the starch is in the form of granules.
- the granule constitutes a supramolecular set within which there are two types of polysaccharides: amylose and amylopectin.
- Amylopectin is the main carbohydrate constituent of starch: 65-85% (m / m) for normal starch genotypes.
- This macromolecule has a complex branched structure composed of ⁇ - (1,4) glucan links connected by numerous branch points (5-6% of the total number of bonds) to ⁇ - (1,6).
- Amylose and amylopectin are closely associated in semi-crystalline granular entities, with alternating highly reactive amorphous layers and crystalline layers.
- Amylose is a substantially linear polymer whose primary structure consists of D-glucosyl units linked by ⁇ - (1, 4) linkages.
- the amylose may be in free form or in the form of amylo-lipid complexes.
- the grain of rice undergoes during its hydrothermal treatment a destructuration, especially at its wall, related to the penetration of water into the grain. This destructuring is accompanied by solid losses in the cooking water. During soaking, several stages of solid losses succeed one another.
- polyhedra of diameter 9 ⁇ corresponding to isolated rice starch granules are observed. After 6 minutes of soaking at 70 ° C., they are structures of 15 to 20 m identified as aggregates of a few granules of starch.
- faults in the cell wall resulting from the penetration of water into the starchy matrix are observed.
- Starch can be classified according to its in vitro digestion into three types: rapidly digestible starch (RDS), slowly digestible starch (SDS) and resistant starch (RS). This nutritional classification based on in vitro measurement is useful in predicting the glycemic response. 60 ° C not rinsed 60 ° C rinsed 70 ° C rinsed 70 ° C rinsed
- the rapidly digestible starch is present in larger quantities in the rinsed rice than in the rinsed rice.
- this rapidly digestible starch is responsible for the increase in glycemia linked to the rapid digestion of the starchy matrix.
- the rinsing of rice is therefore of nutritional interest, since it allows the removal of agglomerated RDS on the grain wall during cooking, thus aiming to increase the RDS content.
- the amount of RS measured for non-rinsed cooked rice is 21.4 ⁇ 1 .4% and 21.5 ⁇ 2.7% for 60 ° C and 70 ° C soaking, respectively.
- the resistant starch contents are 10.2 ⁇ 0.3% and 10.0 ⁇ 1.2% for rice cooked with a soak at 60 ° C and 70 ° C, respectively.
- RS is not absorbed in the small intestine and passes into the colon where it is fermented by the intestinal flora. Fermentation of RS in the colon produces short-chain fatty acids and other organic acids and releases hydrogen by exhalation. To ensure good digestibility, it is important that the SAR rate is not too high.
- the calculation of the glycemic index gives in the case of rice cooked with a soak at 70 ° C a glycemic index (GI) of 74.8 ⁇ 0.6 and a glycemic index of 76.2 ⁇ 0.3 for cooked rice. with soaking at 60 ° C.
- GI glycemic index
- the statistical analyzes performed on the variance of the results conclude that the GIs measured in the context of rice cooked with soaking at 60 and 70 ° C rinsed after cooking are significantly different. Rinsing lowered the glycemic index of the cooked rice with a soaking at 60 ° C of 4.1 ⁇ 1 .1 point, while rinsing the rice cooked with soaking at 70 ° C allows a drop of 8.9 ⁇ 1 .0 points.
- the benefit gained from reducing the glycemic index of the rice by the rinsing step is closely related to the material re-released by the rice during soaking and cooking, finally re-agglomerated on the surface of the grain of the rice.
- rice at the end of cooking takes place the gelatinization corresponding to the modification of the starch from a crystallized state to an amorphous state under the effect of the temperature.
- the water diffuses into the granule, this one swells, there is formation of bonds between the starch chains, the medium thickens: it gelatinizes.
- native starches are not soluble: water can not penetrate the interior of the granule because of the peripheral crystalline structure.
- pancreatic amylases then becomes possible: then shorter chains appear which facilitate the flow, the medium becomes more fluid (thus loses in viscosity).
- the glycemic index is a factor in the nutritional quality of a food.
- the gelatinization temperature above 65 ° C
- the rice starch granules lose their semi-crystalline structure, become hydrated, and the rice grains swell. .
- Amorphous amylose is then solubilized in the medium. If the temperature increases, this amylose and that remaining in the granules are likely to complex with monoacylated lipids.
- amylose-lipid complexes will then be organized until the temperature reaches their melting point (85 ° C.). However, during the soaking phase at 70 ° C, the temperature remains below the melting point: the complexes thus having time to organize, their melting temperature goes from 85 to 100 ° C. This step therefore makes it possible to retain a greater quantity of amylose-lipid complexes during cooking. Since the latter are slower to digest than gelatinized starch, their presence makes it possible to reduce the glycemic index of the cooked rice.
- the soaking temperature has a very important effect on the amplitude of the solid losses. For the same rice variety, by increasing the soaking temperature from 50 ° C to 90 ° C, the value of the solid losses increases from 4% to 16%. More than 85% of the material found in soaking and cooking water is polysaccharides, mainly soluble starch. The easily digestible starch is very soluble, it passes into the soaking water during cooking. Starch is converted into glucose by the digestive enzymes to be assimilated. The rise in blood glucose levels reflects the level of glucose absorption and the glycemic index of a food. By eliminating this soluble starch at the end of soaking, the amount of glucose that can be generated and assimilated is significantly reduced, therefore the glycemic index of the food is reduced.
- the rice cooker 1 comprises, a main body 10 or housing comprising a housing in which is inserted an internal tank 1 1 for cooking the rice.
- the housing is equipped with a cover 12 mounted hinged on the housing 10 so that the upper part of the main body is opened or closed by the cover 12.
- a control device 13 ensuring the control operations of the rice cooker 1 team also the housing 10.
- the rice cooker 1 also comprises a first sensor 15 for detecting the temperature of the lower part of the vessel 1 1.
- the first sensor 15 is mounted near the bottom of the tank.
- a second sensor 16 for detecting the temperature of the inner face of the cover 12 is mounted on the cover. The first and second sensors are connected to the controller 13.
- the heating means of the rice cooker 1 comprise a so-called main heating element 17 supplying a heating source so as to cause the soaking / cooking operation and the operation of keeping warm in the tank 1 1 of the rice cooker, an element 18 heating the upper edge of the vessel 1 1 and an element 19 heating the inner face of the cover 12.
- the housing 10 and the lid are for example plastic.
- the controller 13 is installed on an inner side of the main body 10.
- the controller 13 is also connected to control buttons 22 allowing a user to program the cooker.
- control device 13 is connected to the heating elements 17, 18, 19 to activate or deactivate them according to a part of a cooking program chosen by the user and on the other hand temperature measurements taken by the two sensors 15, 16.
- the main heating element 17 is induction type while the element 18 heating the upper edge of the vessel 1 1 and the element 19 heating the cover 12 are of the resistive type.
- the control method of the rice cooker 1 according to the invention allows the cooking of white rice to preserve at least one amino acid in the cooked white rice and also reduce the glycemic index.
- the amounts of the five essential amino acids, lysine, isoleucine, valine, phenylalanine and threonine have been increased relative to the quantities measured in a conventional white rice cooking process. This can be explained by the presence of protease type enzymes. Soaking prolonged around 70 ° C would increase the amino acid synthesis by cleavage endogenous proteins of rice. Essential amino acids are the most important because they are not synthesized by the body. Their only source is food.
- the process according to the invention also makes it possible to increase the quantity of essential fatty acids (linoleic and linolenic acids) which could impact satiety and of di- and tri-saccharides (maltose, sophorose, maltotriose) which could impact the index glycemic.
- the soaking step has a limited duration. Indeed, a soaking step too long degrades the organoleptic characteristics of rice. Indeed, during the soaking step, the rice absorbs water. If during the cooking stage the level of the water contained in the tank is below the level of the rice, then part of the rice will not be properly cooked. Thus, by limiting the soaking time the white rice retains its organoleptic qualities such as a soft and a tacky texture satisfactory.
- the method according to the invention also comprises a drainage step at the end of the soaking step.
- the rapidly digestible soluble starch diffuses into the water until the rice is sufficiently inflated and hydrated for the cooking step.
- the residual soaking water is drained, which eliminates the starch having diffused outside the grains.
- clear water is added for the cooking phase. Drainage can be done manually, using a drip tray or strainer, for example, and the user of the appliance then adds clear water for cooking.
- a rinse can be performed at the end of cooking.
- rapidly digestible starch continues to pass into the cooking water during the rise in temperature to reach the cooking instruction.
- These molecules can agglomerate around the grains of rice at the end of cooking.
- Rinsing with clear water could further reduce the glycemic index of the rice.
- This step is not dependent on the drainage at the end of soaking and could be carried out without prior drainage.
- the rinsing is carried out with hot water, for example between 50 and 80 ° C. Indeed, the rapidly digestible starch is more easily soluble in hot water.
- the apparatus comprises a drainage device which makes it possible to eliminate the soaking water and to collect the soluble starch, as well as a tank of clear water which re-supplies the cooking tank for the phase Cooking.
- the drainage device (not shown) comprises for example an orifice made in the bottom of the tank January 1.
- the orifice is closed by a valve controlled by the control device 13.
- a container is placed under the vessel 1 1 in order to collect the drainage liquid flowing through the orifice when the valve is in the open position.
- a mechanical filter can be placed at the orifice to prevent the rice from being evacuated with the liquid.
- the reserve of clear water (not shown) is for example positioned above the internal tank 1 1.
- An emptying port and a valve controlled by the control device are made in the bottom of the clear water supply.
- the reserve of clear water can be installed around the tank 1 1 internal.
- a suction pump and a conduit are associated with the supply of clear water so that the pump sucks the clear water from the reserve and pushes it to in the tank via the conduit.
- the clear water is supplied by an external source, for example the domestic water distribution network.
- the rice cooker according to the invention comprises an external connector connected to a conduit. The free end of the duct is placed in the internal tank 1 1. A pilot valve is installed on the duct. Before starting a cooking cycle the user connects the home network to the connector.
- drainage and filling are performed automatically by actuating the various valves controlled by the control device.
- the drainage device in its various variants can be used for the end-of-cooking rinsing step.
- the control method comprises a two-phase cooking step.
- the cooking parameters (temperature and duration) of the first phase are determined to obtain a glossy rice.
- the cooking temperature will be lower than that usually used for cooking white rice.
- FIG. 2 represents the temperature diagram as a function of time during the implementation of a soaking step of the method according to the invention.
- the control method according to the invention allows the soaking and cooking of the white rice in the rice cooker without user intervention during the preparation cycle.
- the main step of the control method according to the invention is a soaking step A. All or part of the heating elements 17, 18, 19 are activated so as to maintain a temperature inside the vessel 1 1 between 40 and 75 ° C. In other words, a control loop of the heating elements 17, 18, 19 on the signal of the first temperature sensor 15 located in the bottom of the vessel 11 is implemented. The duration of the soaking step is limited to
- the heating element 19 placed in the lid is deactivated throughout the soaking step.
- the soaking temperature is 70 ° C. and the soaking time is about 13 minutes.
- a drainage step is triggered. As indicated above, this step consists in removing / draining the soaking water by means of the drainage device and adding the quantity of clear water necessary for cooking the rice proper.
- a heating step B is automatically switched on.
- the heating step consists of reaching a determined set temperature above 85 ° C. inside the tank 1 1.
- the control device 13 activates all the heating elements 17, 18, 19 of the rice cooker 1 as long as the signal of the second sensor
- first phase C of the cooking step begins.
- the duration of this first phase C of the cooking step is short compared to the total duration of the cooking cycle.
- the set temperature of the first cooking phase is maintained for a period of between 2 and 6 minutes.
- the Applicant has found that to obtain an optimal white rice gloss the duration of the first phase C of the baking step was about 3 minutes.
- the actual cooking step is performed in a second phase D of the baking step.
- This second phase D of the baking step begins as soon as the duration of the first phase C has elapsed.
- the baking temperature of the second phase D is lower than that of the first phase C of the baking step.
- the set temperature of the second phase D of the firing step is about 100 ° C.
- the heating elements 17, 18, 19 are deactivated until the temperature decreases to the desired temperature. Then, a control loop of the heating elements 17, 18, 19 on the signal of the second temperature sensor 16 of the lid 12 is triggered to maintain the set temperature. During the entire second phase D of the cooking step, the temperature is regulated. The second phase D of the baking step is maintained for a period of between 5 and 15 minutes and preferably 10 minutes. As soon as the cooking time has elapsed, the heating elements 17, 18, 19 are deactivated.
- the invention also relates to the control device 13 specially adapted to perform the method according to the invention.
- the control device according to the invention is connected to the heating elements and to the sensors and comprises a memory for storing the different program sequences corresponding to the execution of the method according to the invention.
- the invention relates to a rice cooker equipped with such a control device.
- the invention is not limited to the described embodiments.
- the temperature sensors can be placed differently in the rice cooker.
- the signals transmitted by the sensors can be used indifferently to regulate the cooking or soaking set temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nutrition Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Cookers (AREA)
- Cereal-Derived Products (AREA)
- Commercial Cooking Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1558354A FR3040614B1 (fr) | 2015-09-09 | 2015-09-09 | Procede de commande d'un cuiseur a riz et cuiseur a riz pour la mise en œuvre d'un tel procede |
| PCT/FR2016/052250 WO2017042498A1 (fr) | 2015-09-09 | 2016-09-08 | Procede de commande d'un cuiseur a riz et cuiseur a riz pour la mise en oeuvre d'un tel procede |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3346886A1 true EP3346886A1 (fr) | 2018-07-18 |
Family
ID=55072810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16775807.7A Withdrawn EP3346886A1 (fr) | 2015-09-09 | 2016-09-08 | Procede de commande d'un cuiseur a riz et cuiseur a riz pour la mise en oeuvre d'un tel procede |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3346886A1 (fr) |
| CN (1) | CN106527534A (fr) |
| AU (1) | AU2016319500A1 (fr) |
| CA (1) | CA2997602A1 (fr) |
| FR (1) | FR3040614B1 (fr) |
| HK (1) | HK1258072A1 (fr) |
| WO (1) | WO2017042498A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3071393B1 (fr) * | 2017-09-27 | 2019-09-20 | Seb S.A. | Systeme et procede pour la cuisson de riz |
| CN109691881A (zh) * | 2017-10-23 | 2019-04-30 | 飞利浦(嘉兴)健康科技有限公司 | 从米粒中去除淀粉的装置及方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6045847A (en) * | 1997-11-13 | 2000-04-04 | Fuji Oil Co., Ltd. | Rice cooking method |
| JP4021913B2 (ja) * | 2005-09-06 | 2007-12-12 | 治 三宅 | 炊飯器 |
| CN101006836B (zh) * | 2006-01-27 | 2011-05-11 | 本视力(香港)有限公司 | 健康电饭煲及去除大米中淀粉的方法 |
| CN101142986A (zh) * | 2006-09-15 | 2008-03-19 | 熊永华 | 一种即食米的制作方法 |
| FR2966711B1 (fr) * | 2010-10-27 | 2012-12-14 | Seb Sa | Procede de commande d'un cuiseur a riz sous pression et cuiseur a riz sous pression pour la mise en oeuvre d'un tel procede |
| FR2966710B1 (fr) * | 2010-10-27 | 2012-12-14 | Seb Sa | Procede de commande d'un cuiseur a riz sous pression et cuiseur a riz sous pression pour la mise en oeuvre d'un tel procede |
| CN103281941B (zh) * | 2010-12-31 | 2019-02-19 | 皇家飞利浦电子股份有限公司 | 用于烹饪米饭的方法和设备 |
| FR2996986B1 (fr) * | 2012-10-24 | 2015-12-04 | Seb Sa | Procede de commande d'un cuiseur a riz sous pression et cuiseur a riz sous pression pour la mise en œuvre d'un tel procede |
| CN103844182B (zh) * | 2014-02-18 | 2015-11-25 | 南昌大学 | 一种粳米营养方便米饭的生产方法 |
-
2015
- 2015-09-09 FR FR1558354A patent/FR3040614B1/fr not_active Expired - Fee Related
- 2015-09-28 CN CN201510626703.XA patent/CN106527534A/zh active Pending
-
2016
- 2016-09-08 AU AU2016319500A patent/AU2016319500A1/en not_active Abandoned
- 2016-09-08 HK HK19100452.0A patent/HK1258072A1/zh unknown
- 2016-09-08 EP EP16775807.7A patent/EP3346886A1/fr not_active Withdrawn
- 2016-09-08 CA CA2997602A patent/CA2997602A1/fr not_active Abandoned
- 2016-09-08 WO PCT/FR2016/052250 patent/WO2017042498A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3040614B1 (fr) | 2017-10-06 |
| CN106527534A (zh) | 2017-03-22 |
| CA2997602A1 (fr) | 2017-03-16 |
| HK1258072A1 (zh) | 2019-11-01 |
| WO2017042498A1 (fr) | 2017-03-16 |
| FR3040614A1 (fr) | 2017-03-10 |
| AU2016319500A1 (en) | 2018-04-26 |
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