WO2019064314A1

WO2019064314A1 - A device for screening age and adulteration in milk

Info

Publication number: WO2019064314A1
Application number: PCT/IN2018/050624
Authority: WO
Inventors: Chirag TRIVEDI
Original assignee: Kalpa Innovative Solution
Priority date: 2017-10-01
Filing date: 2018-09-29
Publication date: 2019-04-04
Also published as: WO2019064314A4

Abstract

The present invention provides a device for screening age and adulteration in milk. It facilitates the screening of age and adulteration in milk at collection center itself without the use harmful chemicals and without making direct contact with the sample thus is efficient and ecofriendly. Said device is portable. Present invention (P) mainly comprises of; First Assembly (A1), Second Assembly (A2), Means of power supply (23), Controller (A3),Means of Controlling (A4), Display means (A5). Said device is portable.

Description

A DEVICE FOR SCREENING AGE AND ADULTERATION IN MILK

Field of Invention:

The present invention provides a device for screening age and adulteration in milk. In particular the present invention provides a device that facilitates in screening the age of raw milk at the collection center. It further provides a device that facilitates screening of adulterants in raw milk at collection center. Said device is portable.

Background of Invention:

Milk is considered to be the ideal food because of its abundant nutrients required by both infants and adults. Further, it is one of the best source of protein, fat, carbohydrate, vitamin, and minerals. Milk is considered as the wholesome nutrient source. To avail the maximum benefits of milk as the wholesome nutrient source it is important that the right quality of milk is consumed. Milk coming out of the udder of healthy cows or buffaloes is no way inferior and is at a temperature of 36-37°C, however milk handling process in the present systems and poor hygienic conditions, both at the farmer's door step and at the milk collection centers, greatly affects the quality and longevity of milk received at the dairy processing plants.

Ageing in milk is one of the important factor that determines the quality and longevity of the milk. Ageing of milk is the problem associated with the quality of milk. Milk being the excellent source of nutrient, microbes grows rapidly, which ultimately reduces the quality of milk with time. Poor hygienic handling of milk at the point of milking and subsequent handling adds further microbial load and thus there is an exponential growth of microbes resulting in faster development of acidity, drop in MBR Time and pH. Screening of Milk to determine Ageing in milk is very important requirement at the time of delivery by the farmer to the milk collection center because one / two farmer's poor quality of milk can result into spoilage of the entire lot of collected milk at the center. To identify poor quality milk and avoid its mixing in large lot is a challenge at collection centers because number of farmers pour milk at such centers at such a speed that as many as 80- 100 or more farmers may pour milk within an hour making it virtually impossible to screen poor quality milk using conventional methods such as pH determination or acidity measurement or techniques like Methyl Blue Reduction (MBR) Time because each of these tests would consume anywhere between 5 min. to a few hours.

Techniques such as pH measurement, acidity measurement and Methyl Blue Reduction (MBR) Time test are performed at chilling centers and dairy plants because the milk is received in large container lots such as milk tankers and time available to carryout pre-acceptance tests is easily available. This however is not the case at the village collection centers because of large number of samples to be tested within a very short span of time. The milk collection speed at the village collection centers is so high that to screen the age of milk of each farmer using conventional testing methods is not possible.

Another factor that affects the quality of the milk is Adulteration. "Adulteration" means that a food product fails to meet federal or state standards. Adulteration could be defined as a process by which the quality or the nature of a given substance is reduced. Adulteration is addition of another substance to food item in order to increase the quantity of food item in raw form or prepared form, which results in loss of actual quality of food item. Adulteration to food may be intentional or unintentional. These substances are termed as "Adulterants". Said adulterants may be other available food items or non-food items. Unfortunately milk is being easily adulterated. Possible reasons behind it may include demand and supply gap, perishable nature of milk, low purchasing capability of customer and lack of suitable screening test methods.

Water is a common adulterant to milk, to increase volume and profit. However, consumers easily detects the adulteration of water in milk; as it changes the taste of milk, it does not boil over while heating but keeps boiling inside the vessel, the formation of cream is reduced. Thus to avoid getting caught the adulterator adds other adulterants to the watered milk to improve its thickness, taste, density and viscosity. Solids other than milk fat present in milk and primary responsible for density and viscosity are known as solid-non-fat (SNF). The common adulterants used in milk to increase its SNF value are urea, starch, detergents, sodium chloride, skim milk powder, sucrose, glucose. Adulterants like Formalin and hydrogen peroxide are used to control bacterial growth in milk, while neutralizers are used to reduce acidity in milk and hence maintain its taste. There is not definitive list of all the adulterants used in milk. Common parameters that are checked to evaluate milk quality are fat percentage, Solid nonfat (SNF) percentage. The microbial content of raw milk is important for the production of hygienic dairy foods. Microbial spoilage involves the degradation of carbohydrate, protein and fat by microbes or their enzymes. There is mix group of organisms involved in spoilage of milk. Microbial load in milk is reduced by pasteurization, however the problem of spoilage caused by ageing in the raw milk is still unaddressed. Many devices and methods are available that determines the microbial load and adulterant in raw milk; however, they are tedious, time consuming or expensive. Table 1 compares the conventional devices and methods for screening of adulteration and microbial load in milk in terms of aforesaid parameters:

Magneto elastic Not Broad and Easy to 18 hours. accurate easily use.

and adaptable.

Tested on

specific

bacteria

in milk.

Infrared Accurate Broad and Easy to Within 4 spectroscopy sensitive use. minutes.

Protein/ fat count Not Broad and Complicat 1 - 2 hours

Accurate sensitive ed;

requires

technical

knowledge

Methylene blue Accurate Broad Easy to 30 minutes reduction time use. to 5 hours or more.

Table 1 Conventional devices/method compared against the milk adulteration and spoilage parameters:

Further the chemistry-based test for the screening of most of the adulterants in milk and its shelf life are available and have been used at random. However, these are slow and cumbersome and further cannot be used in the village level milk procurement environment as here milk from individual farmers is received at a speed of 30-45 seconds per farmer and testing of adulterants through chemical test methods takes at least 10 minutes. To overcome said difficulties the instrument-based adulteration screening techniques are developed which includes technology- based techniques for screening of adulterants in milk such as; the use of Gas chromatography, Fourier based infrared spectroscopy, electronic tongue. Said instrument based techniques are able to screen 80- 100 samples per hour. However said instrument based techniques are very expensive and further they fails to detect aging in the milk. In case of Electronic tongue, it may happen that it contaminates the non-adulterated sample from the previously detected adulterated sample and thereby reduces accuracy of the system. Also requires cleaning after using for each sample. Thereby the need arises to develop a device that accurately, instantly, efficiently screening the adulterants in milk along with the determination of ageing of milk.

Prior Art and Its Disadvantages:

US patent US 6636811 Bl discloses a device for identifying gaseous compounds, comprising a sensor array having, for instance, ten gas sensors in the form of semiconductor gas sensors. Said sensor array has a supply line with an inlet and an outlet. A switchable three-way valve is located in the supply line, to which a selective collector unit is attached. Said collector unit comprises a special adsorber, a heater and a separate feed pump with a flow sensor. A secondary line, in which a dilution unit is arranged, discharges into the feed line between the three-way valve and the sensor array. A feeding and control unit also having a feed pump with a flow sensor is located in the area of the outlet of the sensor array. An electrical line leading to an evaluation computer branches off from the sensor array. Another Chinese patent CN 104792826 A discloses a milk freshness detection system and method based on electronic nose to solve the problem of rapid detection of milk fresh milk freshness. The detection system and the method of the invention comprises an odor fingerprint information collecting module, a signal preprocessing module, a feature extraction and screening module and a pattern recognition module. The odor fingerprint information collecting module reads the voltage signal of the gas sensor array and the gas in digital form into the memory, realizes the real-time digital display and the waveform display of the data, and stores and replays the data; the signal preprocessing module.

However, the prior art are not specific for screening adulteration in raw milk. Further they use gas streams for the detection of adulterants. Also fails to detect the ageing of raw milk. They require more time for the detection of adulterants and are time consuming.

Many of them further require storing of the milk sample for 24 hours thereby fails to detect adulterants in milk at the time of delivery.

Uses harmful chemicals for detection of adulterants and thus are not ecofriendly. Based on touch technology to detect adulterants thereby comes in the direct contact of samples which may leads to contamination of the successive samples.

Disadvantages of Prior Art:

The invention mentioned in the prior art and in other existing prior art suffers from all/ any of the below mentioned disadvantages: 1. Most of them do not provide a device for screening age of the raw milk at the raw milk collection center.

2. They fail to provide device that screens the adulterants in the raw milk at collection center.

3. Most of them fail to provide touch free technology for screening of adulteration and hence do not provide the accurate and efficient result as the level of cross-contamination is higher.

4. Many of them uses touch-based technology to screen adulterants; which requires the direct contact with samples that ultimately leads to cross-contamination of the samples.

Thus the result is not substantially efficient.

5. They fail to provide chemical free technology for screening of age and adulteration, therefore are not ecofriendly.

6. Many of them requires more time for screening age of milk adulterant and are not suitable to provide efficient result at collection center.

7. Many of them further requires to store the raw milk sample for 24-27 hours thereby fail to screen age of raw milk at the time of delivery.

8. Many of them fail to screen adulteration at source.

9. They fail to determine the age of raw milk at source.

10. They are complicated and are not user friendly.

Therefore, there is an unmet need to come up with the invention that obviates the problems of prior art. Objects of Invention:

The primary object of the present invention is to provide a device for screening age and adulteration in milk. Further object of the present invention is to provide a device for screening age and adulteration in raw milk at collection center.

Yet further object of the present invention is to provide a device to screen age of raw milk and thereby provide details of the useable shelf life of raw milk at collection center.

Yet further object of the present invention is to provide device for screening age and adulteration in milk that eliminates the requirement of storage of milk for 24-27 hours before analysis and thus is less time consuming and is user friendly.

Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that facilitates touch free technology and thereby eliminates the need of cleaning.

Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that facilitates touch free technology and thereby eliminates the cross contamination of samples and thus is substantially efficient and accurate. Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that eliminates the use of chemicals and provides ecofriendly technology.

Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that requires low maintenance and is economical.

Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that is portable and robust.

Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that further provides faster with reasonable accuracy and is thereby efficient.

Yet further object of the present invention is to provide device for screening age and adulteration in raw milk that obviates the problems of the prior art. Brief Description of Drawings:

Fig.4 Shows position 2 in exposure phase of present device for Screening age and adulteration in milk.

Fig.5 Shows position 3 in relaxation phase of present device for Screening age and adulteration in milk.

Fig.6 Shows position 4 in recovery phase of present device for Screening age and adulteration in milk.

Fig.7 Shows the block diagram of the present invention

Meaning of Reference numerals of said component parts of present device for screening of age and adulteration in milk:

P : Present device for screening age and adulteration in milk

Al : First Assembly

A2 : Second Assembly

A3 : Controller

A4 : Means of Controlling

A5 : Display means

1 : Base Plate

2 : Linear Bearing rod

3 : PMDC Motor clamp

4 : PMDC Motor

5 : CAM

6 : Follower Plate

7 : Linear Bearing

8 : Follower

9 : Stepper Motor

10 : Coupling 1 Top Plate

Coupling 3

Coupling 2

Middle plate

Sample Cup CI

Sample Cup C2

Sample cup holder

Rotating plate Column

Rotating plate

Heater

PCB- P

PCB-Q

O Ring

Means of Power Supply

Means of Rotation

Stepper motor Drive

PMDC motor Drive

Means of Analog Digital conversion

Means of Classification

Battery

Sensor 1

Sensor 2

Sensor 3

Sensor 4

Sensor 5

Sensor 6

Sensor 7

Sensor 8 Summary of the Invention:

The present invention provides a device for screening of age and adulteration in milk (P). More particularly provides device for screening age and adulteration in raw milk. It facilitates the screening of age and adulteration in milk at collection center of raw milk itself without the use harmful chemicals and without making direct contact with the sample thus is efficient and ecofriendly. Present invention (P) mainly comprises of;

First Assembly (Al),

Second Assembly (A2),

Means of Power supply (23),

Controller (A3),

Means of Controlling (A4),

Display means (A5),

Wherein

Said First Assembly (Al) further comprises of;

Base Plate (1),

Linear Bearing rod (2),

PMDC Motor (4),

PMDC Motor Clamp (3),

CAM (5),

Follower Plate (6),

Linear Bearing (7), o Follower (8),

o Stepper Motor (9),

o Coupling 1 ( 10),

o rotating plate column ( 17),

o rotating plate (18);

Said Second Assembly (A2) further comprises of:

o Top plate ( 1 1),

o Coupling 3 ( 12),

o Coupling 2 ( 13),

o Middle Plate (14),

o Sample Cup CI (15a),

o Sample cup C2 (15b),

o Sample Cup Holder (16),

o Heater ( 19),

o O ring (22);

o PCB-P (20),

o PCB-Q (21),

Said controller (A3) further comprises of;

o Means of Analog digital conversion (25); means of controlling (A4) further comprises of;

o Means of Rotation (24),

o Means of classification (26) . Detailed Description of Invention:

The embodiment of the present invention is to provide a device for screening age and adulteration in milk (P) . In particular it provides a device for screening age and adulteration in raw milk at collection center. Present invention (P) facilitates the screening of age and adulteration in raw milk at collection center using plurality of gas sensors that enables touch/ contact free, chemical free, hygienic determination by employing substantially less time. Present invention (P) provides precise and accurate screening of the age and adulteration in raw milk and is therefore efficient and is ecofriendly.

Present device (P) mainly comprises of;

• First Assembly (A 1),

• Second Assembly (A2),

· Means of Power Supply (23),

• Controller (A3),

• Means of Controlling (A4),

• Display means (A5); Referring to Fig. 1 said first Assembly (Al), is provided to accommodate PMDC motor (4) and stepper motor (9) and is connected to the second assembly (A2) on top side. Said first assembly (Al) further comprises of:

o Base Plate (1),

o Linear Bearing rod (2),

o PMDC Motor (4),

o PMDC Motor Clamp (3), o CAM (5),

o Follower Plate (6),

o Linear Bearing (7),

o Follower (8),

o Stepper Motor (9),

o Coupling 1 ( 10),

o rotating plate column ( 17),

o rotating plate (18),

Said base plate (1) provides the support to the present device (P) and is connected to the Linear Bearing rod (2) on all the sides. Said linear bearing rod (2) keeps center of base plate ( 1), follower plate (6) and top plate (1 1) aligned. Said PMDC motor (4) is attached to the base plate ( 1) by the means of said PMDC motor clamp (3) . Said CAM (5) and follower (8) converts the rotary motion of PMDC motor (4) to perpendicular motion from horizontal plane of base plate ( 1). CAM (5) is attached to the shaft of the said PMDC motor (4) . Said follower plate (6) is attached to the stepper motor (9) on one end and is attached to the follower (8) on the other. Linear bearing (7) provides the support to the said Follower plate (6) . Said stepper motor (9) is attached to the rotating plate (18) through said coupling 1 ( 10) on one end and is attached to the said follower plate (6) on the other end. Said stepper motor (9) is controlled by means of controlling (A4) and is provided for moving rotating plate ( 18) and middle plate ( 14) in clockwise and counter clockwise direction as per requirement. Referring to Fig.1 said Second Assembly (A2), is provided for housing sensor PCB P (20) and PCB Q (21) and is connected to the First assembly (Al) on bottom side. Said second assembly (A2) further comprises of: o Top plate (1 1),

o Coupling 3 (12),

o Coupling 2 (13),

o Middle Plate (14),

o Sample Cup CI (15a),

o Sample Cup C2 (15b),

o Sample Cup Holder (16),

o Heater (19),

o O ring (22),

o PCB-P (20),

o PCB-Q (21);

Said sample cup CI (15a) is provided to fill in the sample raw milk and sample cup C2 (15b) is provided to fill in the reference medium. Said top plate (1 1) is provided for locking the sample cup CI (15a) and sample cup C2 (15b). The top plate (1 1) further consists of four circular passages such that the center of said circular passage has the angle of 90° amongst them and 180° across them. Said circular passages at an angle of 180° houses PCB-P (20) and PCB-Q (21). Said top plate (1 1) is attached to the sample cup holder (16) through the coupling 3 (12) on one end and is attached to the PCB- P (20) and PCB-Q (21) on the other end. Further the middle plate (14) is provided for housing said sample cup holder (16). Said middle plate (14) is attached to the rotating plate (18). The rotating plate (18) facilitates the 90° rotation of said middle plate (14). The middle plate (14) further consists of four circular passages; wherein said circular passages are at 90° angle among themselves and are at an angle of 180° across them. Further the said circular passage at an angle of 180° of the middle plate (14) houses sample cup holder (16). Said sample cup holder (16) is provided to facilitate insertion of sample cup CI (15a) carrying sample raw milk and sample cup C2 (15b) carrying reference medium within. Further heater (19) is provided to heat sample raw milk and the reference medium at temperature.

Said PCB-P (20) consists of plurality of sensors such as four, six, eight sensors and more preferably four sensors; Sensor 1 (SI), Sensor 2 (S2), Sensor 3 (S3), and sensor 4 (S4). Further PCB-Q (21) consists of plurality of sensors such as four, six, eight sensors more preferably four sensors sensor 5 (S5), Sensor 6 (S6), Sensor 7 (S7), Sensor 8 (S8). The sensors of PCB -P (20); Sensor 1 (SI), Sensor 2 (S2), Sensor 3 (S3), and sensor 4 (S4) are provided to sense the emissions of varied gases that are emitted from the sample raw milk placed in the sample cup CI (15a) that is placed under said PCB-P (20). Said sensors of PCB-Q (21); sensor 5 (S5), Sensor 6 (S6), Sensor 7 (S7), Sensor 8 (S8) senses the emission of gases and other noises through the reference medium placed in the sample cup C2 (15b) that is placed under said PCB-Q (21) . The responses of the sensors of PCB Q (21) are used to normalize the response of sensors from PCB P (20). The responses of sensors of PCB Q (21) filters the internal and external noise of the present system (P) and thereby provides accurate screening of adulteration and aging in raw milk at the collection center itself. Said heater (19) maintains the temperature of the sample raw milk and reference medium in the range of 33°C-37°C and more preferably at 35°C.

Referring to Fig 1 and fig 7, Said controller (A3) comprises of;

o Means of Analog Digital conversion (25); said means of power supply (23) in turn consists

o Insulated power supply 1 (IPS 1),

o Insulated power supply 2 (IPS 2),

o Insulated power supply 3 (IPS 3),

o Insulated power supply 4 (IPS 4);

Said means of Rotation (24) in turn consists of;

o Stepper motor drive (24a),

o PMDC motor drive (24b);

Said means of power supply (23) further consists of plurality of power supplies; wherein said power supplies are insulated from one another and more preferably are four insulated power supplies (IPS) . The Insulated power supply 1 (IPS 1) generates a DC 12V and facilitates the working of said stepper motor (9), heater (19) and PMDC motor (4). Said insulated power supply 2 (IPS2) generates DC 5V and provides power to said means of controlling (A4). Said insulated power supply 3 (IPS3) further generates DC 5V that facilitates the working of said PCB-P (20) and PCB-Q (21) . The insulated power supply 4 (IPS4) provides DC 5V to said controller (A3) .

Said means of rotation (24) regulates the rotational motion of the said middle plate ( 14) . It further consists of; o Stepper motor drive (24a),

o PMDC motor drive (24b);

Said stepper motor drive (24a) regulates the stepper motor (9) which in turn facilitates the rotational motion of middle plate ( 14) such that the position of the raw milk sample is under said PCB- P (20) and the position of the reference medium is under PCB-Q (21) . Said PMDC motor drive (24b) regulates and controls PMDC motor (4). PMDC motor drive (24b) facilitates the locking and unlocking mechanism of said sample cup CI ( 15a) and sample cup C2 ( 15b) .

Said means of analog digital conversion (25) is provided to convert the analog signal in digital form. Said controller (A3) communicates between said means of controlling (A4) and analog to digital conversion (25). Said Means of controlling (A4) regulates the temperature of the sample raw milk and reference medium contained in sample cup CI (15a) and sample cup C2 ( 15b) respectively through said heater ( 19) .

Said means of controlling (A4) also provides control signals to Stepper motor drive (24a), PMDC motor drive (24b), Display means (A5) . It further consists of means of classification (26). Said means of classification (26) stores and process the data and in turn communicates to Display means (A5) . Said display means (A5) is for displaying the results of the activities within said controller (A3); wherein display means (A5) includes but does not limit to the use of liquid crystal display units (LCD) . Said Battery (27) maintains the heater supply of the said sensors in event of interruption of input 230V supply.

Working Of Invention:

Present device for screening age and adulteration in milk (P), analyses and screening the age and adulteration of the raw milk sample at collection center; wherein said device (P) utilizes plurality of gas sensors for screening age and adulteration in milk.

The working of the present device (P) is herein after described in detail with reference to Fig.2 to Fig.7. The working of the present device (P) mainly consists of following phases:

Referring to Fig.2, for analyzing the raw milk sample the user fills in the sample raw milk to be screened in sample cup CI (15a) which is 90 -degree counter clock wise direction from Sensor PCB-P (20) and loads the said sample cup CI (15a) on the sample cup holder (16). Further the user fills in the reference medium in another sample cup C2 (15b), which is 90-degree counter clockwise direction from sensor PCB Q(21) and loads said sample cup C2 (15b) on the sample cup holder (16). The position of the said sample cup CI (15a) and sample cup C2 (15b) here is in position O. Said phase is the neutral phase .Now switch on the main power supply.

On switching the main power supply, said Means of power supply (23) provides power to Means of rotation (24), Controller (A3), Means of controlling (A4), heater (19). Here the sample of raw milk contained in sample cup CI (15a) and the reference medium contained in sample cup C2 (15b) are exposed to the temperature for screening of age and adulteration. This phase is the pre-exposure phase. The temperature of the raw milk sample and the reference medium is maintained at 35°C by said means of controlling (A4). The temperature maintained facilitates the emission of the gases from the raw milk sample and the reference medium. The raw milk sample to be analyzed and the reference medium are positioned such that they are away from each other at an angle of 180°; the sample cup CI (15a) and sample cup C2 (15b) are loaded in the sample cup holder ( 16) . Further for input command, switch 1 is pressed to start the measurement. The time period where said switch 1 is pressed is marked as t=Osec. Said controller (A3) upon receipt of the input command receives the data from said means of Analog digital conversion (25) and transmits the data to said means of controlling (A4) . Means of controlling (A4) stores the said data. Referring to Fig.3; the means of rotation (24) receives the signal from said means of controlling (A4) .Said stepper motor drive (24a) receiving the signal from said means of controlling (A4), activates the stepper motor (9) which in turn rotates the said middle plate (14) through an angle of 90° in clockwise direction; such that the sample raw milk is positioned under the sensor PCB-P (20) and the reference medium is positioned under the sensor PCB-Q (21). Said position is Position 1 of the pre-exposure phase. Referring to Fig.4; the sample cup holder (16) is in position 2, where upon loading of the raw milk sample under the sensor PCB-P (20) and the reference medium under the sensor PCB-Q (21); said PMDC motor drive (24b) of means of rotation (24) receives signal from means of controlling (A4) and activates PMDC motor (4) that rotates the said Follower plate (6) along with said Cam (5) perpendicularly in upward direction towards said PCB - P (20) and PCB-Q (21) as shown in fig. 4. The sample cup CI ( 15a) and sample cup C2 ( 15b)is rotated perpendicularly such that the cavity between the sample CI (15a) and sample cup C2 ( 15b) and said sensors of PCB-P (20) and PCB-Q (21) is air tight that avoids the chances of gas leakage and thereby facilitates in providing accurate screening of age and adulteration in milk. This exposes the sample raw milk contained in sample cup CI (15a) and reference medium contained in sample cup C2 ( 15b) to the said sensors of PCB-P (20) and PCB-Q (21) respectively. This phase is the Exposure Phase; wherein the sample raw milk and reference medium are exposed to said sensors for screening of age and adulteration During the exposure phase varied gases contained in the sample raw milk and reference medium maintained at temperature 35°C are emitted. Said plurality of sensors of PCB-P (20) and PCB-Q (21), recognizes the emitted gases from the raw milk sample and reference medium. Said plurality of sensors of PCB-P (20) and PCB-Q (21) generates the analog signals from said emitted gases. The analog signals generated by said sensors are received by means of analog digital conversion (25) which in turn is processed further by said means of controlling (A4) . Means of controlling (A4) records said exposure phase at t=60sec and stores the data. Means of rotation (24) receives the signal from said means of controlling (A4) and unloads the sample raw milk and the reference medium at t=60sec of the said exposure phase. Referring to Fig.5; the sample cup holder (16) is in position 3. Said PMDC motor drive (24b) of means of rotation (24) receives signal from means of controlling (A4) and activates PMDC motor (4) that rotates the said Follower plate (6) along with said Cam (5) perpendicularly in downward direction. This phase is the Relaxation phase.

The stored data during the exposure phase is further processed by means of controlling (A4) and it classifies the sample raw milk as: o 0: Fair

o 1 : poor age and / or mildly adulterated o 2: very poor age and/ or heavily adulterated

Further the means of controlling (A4) transmits the result of screening raw milk sample to the display means (A5); which in turn displays the result of screening raw milk sample Referring to Fig.6, the sample cup holder ( 16) is in Position

4. Said stepper motor drive (24a) receiving the signal from said means of controlling (A4), activates the stepper motor (9) which in turn rotates the said middle plate ( 14) through an angle of 90° in counter clockwise direction. 10. Further the plurality of sensors of PCB-P (20) and PCB-Q (21) are exposed to atmosphere at t=61sec and it in turn recovers up at t= 120sec during the recovery phase.

Testing Through MBRT:

The present device (P), is tested for screening of age and adulteration in milk at various raw milk collection centers. The results obtained are validated against the MBRT used for screening of age and adulteration in milk. The efficiency of the present device (P) is substantially higher as indicated in table below:

Table02: Shows the efficiency in screening age and adulteration in raw milk of the present device (P) . The testing of the present device (P) at laboratory was performed using different samples of adulterants like Ammonium sulphate (NH4)2S04, Sodium Carbonate (Na2C03), Hydrogen Peroxide (H202), Caustic Soda (NaOH) and Detergent as emulsifier with varying concentration. The efficiency of the present device (P) substantially higher as indicated in table below:

Table03: Shows efficiency of present device (P) in screening different adulterants. Having described what is considered the best from presently contemplated for embodying the present invention, various alterations, modifications, and/ or alternative applications of the invention for any system will be promptly apparent to those skilled in the art. Therefore, it is to be understood that the present invention is not limited to the practical aspects of the actual preferred embodiments hereby described and that any such modifications and variations must be considered as being within the spirit and the scope of the invention, as described in the above description.

Claims

Claims:

1. A device for screening age and adulteration in Milk (P), comprising,

• First Assembly (Al),

• Second Assembly (A2),

• Means of power supply (23),

• Controller (A3),

• Means of Controlling (A4),

• Display means (A5);

Wherein,

said First Assembly (Al) comprises;

Base Plate (1),

Linear Bearing rod (2),

PMDC Motor (4),

PMDC Motor Clamp (3),

CAM (5),

Follower Plate (6),

Linear Bearing (7),

Follower (8),

Stepper Motor (9),

Coupling 1 (10),

Rotating plate column (17),

Rotating Plate (18);

Said Second Assembly (A2) comprises: • Top plate ( 1 1),

• Coupling 3 ( 12),

• Coupling 2 ( 13),

• Middle Plate ( 14),

• Sample Cup CI ( 15a),

• Sample Cup C2 ( 15b),

• Sample Cup Holder ( 16),

• Heater ( 19),

• O ring (22);

• PCB-P (20),

• PCB-Q (21),

Said controller (A3) comprises;

• Means of Analog digital conversion Said means of controlling (A4) comprises;

• Means of Rotation (24),

• Means of classification (26);

Wherein further,

Said means of power supply (23) in turn comprises plurality of insulated power supplies;

• Insulated power supply 1 (IPS 1),

• Insulated power supply 2 (IPS 2),

• Insulated power supply 3 (IPS 3),

• Insulated power supply 4 (IPS 4); Said Means of Rotation (24) in turn comprises;

• Stepper motor drive (24a),

• PMDC motor drive (24b);

Said PCB-P (20) in turn comprises plurality of sensors;

• Sensor 1 (SI),

• Sensor 2 (S2),

• Sensor 3 (S3),

• Sensor 4 (S4);

Said PCB-Q (21) in turn comprises plurality of sensors;

• Sensor 5 (S5),

• Sensor 6 (S6),

• Sensor 7 (S7),

• Sensor 8 (S8);

Said base plate (1) is connected to the Linear Bearing rod (2) on all the sides; linear bearing rod (2) keeps center of base plate (1), follower plate (6) and top plate (1 1) aligned; PMDC motor (4) is attached to the base plate (1) with the means of said PMDC motor clamp (3); CAM (5) is attached to the shaft of the said PMDC motor (4); said CAM (5) and follower (8) converts the rotary motion of PMDC motor (4) to perpendicular motion; Said follower plate (6) is attached to the stepper motor (9) on one end and is attached to the follower (8) on the other; Linear bearing (7) provides the support to the said Follower plate (6); Said stepper motor (9) is attached to the rotating plate (18) through said coupling 1 ( 10) on one end and is attached to the said follower plate (6) on the other end; Said stepper motor (9) is controlled by means of controlling (A4); said Second Assembly (A2), is connected to the First assembly (Al) on bottom side; Said sample cup CI ( 15a) is provided to fill in the sample raw milk and sample cup C2 (15b) is provided to fill in the reference medium; Said top plate (1 1) is provided for locking the sample cup C 1 ( 15a) and sample cup C2 (15b); top plate ( 1 1) is attached to the sample cup holder ( 16) through the coupling-3 ( 12) on one end and is attached to the PCB-P (20) and PCB-Q (21) on the other end; the middle plate (14) houses said sample cup holder (16); Said middle plate ( 14) is attached to the rotating plate ( 18) and facilitates the 90° rotation of said rotating plate ( 18); Said sample cup holder ( 16) facilitates insertion of sample cup CI (15a) and sample cup C2 ( 15b); Said heater ( 19) maintains the temperature of sample raw milk and reference medium respectively;

Said means of rotation (24) regulates the rotational motion of the said middle plate ( 14); Said means of analog digital conversion (25) is provided to convert the analog signal in digital form; Said controller (A3) communicates between said means of controlling (A4) and analog to digital conversion (25); Said means of controlling (A4) provides control signals to Stepper motor drive (24a), PMDC motor drive (24b), Display means (A5); Said stepper motor drive (24a) regulates the stepper motor (9) that facilitates the rotational motion of middle plate (14) such that the position of the raw milk sample is under said PCB- P (20) and the position of the reference medium is under PCB-Q (21); Said PMDC motor drive (24b) regulates and controls PMDC motor (4); PMDC motor drive (24b) facilitates the locking and unlocking mechanism of sample cup CI ( 15a) and sample cup C2 ( 15b);said PMDC motor drive (24b) receives signal from means of controlling (A4) and activates PMDC motor (4), rotates said Follower plate (6) along with Cam (5) perpendicularly in upward and downward direction towards said PCB - P (20) and PCB-Q (21) respectively;

Said means of classification (26) stores and process the data and in turn communicates to Display means (A5); Said Battery (27) maintains the heater supply of the said sensors in event of interruption of input 230V supply. A Device for screening ageing and adulteration in milk (P) as claimed in claim 1 , wherein said top plate ( 1 1) in turn comprises plurality of circular passages, such that the center of said circular passages has the angle of 90° amongst them and 180° across them; wherein further the circular passages at an angle of 180° houses PCB-P (20) and PCB-Q (21) . A device for screening ageing and adulteration in milk (P) as claimed in claim land claim 2, wherein said middle plate ( 14) in turn comprises plurality of circular passages wherein said circular passages are at 90° angle among themselves and are at an angle of 180° across them; Further the said circular passage at an angle of 180° of the middle plate (14) houses sample cup holder (16).

A device for screening ageing and adulteration in milk (P) as claimed in claim lto claim 3 wherein plurality of sensors four, six, eight and more preferably four sensors of PCB -P (20) ; Sensor 1 (S I), Sensor 2 (S2), Sensor 3 (S3), and sensor 4 (S4) sense the emissions of varied gases emitted from the sample raw milk placed in the sample cup CI ( 15a) placed under said PCB-P (20);said plurality of sensors four, six, eight and more preferably four sensors of PCB-Q (21); sensor 5 (S5), Sensor 6 (S6), Sensor 7 (S7), Sensor 8 (S8) sense the emission of gases and noises through the reference medium placed in the sample cup C2 (15b) placed under said PCB-Q (21) .

A device for screening ageing and adulteration in milk (P) as claimed in claim 1 , wherein said Insulated power supply 1 (IPS 1) generates a DC 12V and facilitates the working of said stepper motor (9), heater (19) and PMDC motor (4); said insulated power supply 2 (IPS2) generates DC 5V and provides power to said means of controlling (A4); Said insulated power supply 3 (IPS3) generates DC 5V that facilitates the working of said PCB- P (20), PCB- Q (21); The insulated power supply 4 (IPS4) provides DC 5V to said controller (A3) . A device for screening ageing and adulteration in Milk (P) as claimed in claim 1 to claim 5, wherein the temperature of the raw milk sample and reference medium is in range of 33°C-37°C and more preferably at 35°C.