Method of concentration of fluid milk using renewable energy

Abstract

A method used for concentration of fluid milk by renewable energy (RE). RE used in the present invention is sole solar energy (SE) at room temperature (25° C.-27° C.). A device of two glass Petri dishes of same size is arranged as upper and lower plates. A volume of 60 ml of pasteurized bovine or camel milk is put in the upper plate and 60 ml of tap water in the lower plate. The device is placed on the bench beside window to be exposed to sunlight, but not to direct sunrays, at room temperature. After about 30 mins water droplets started to appear on the lower face of the upper plate and increased in size with time. With continuous collection of water droplets for 24 hours, 50% of water is removed i.e. giving 50% concentration of milk; after 48 hours the concentration is 16.67%.

Claims

1. A method of concentrating fluid milk, the method comprising the steps of: fixing an upper container on a lower container to form a concentration structure; adding fluid milk in the upper container; adding water in the lower container; exposing the concentration structure under sunlight; and obtaining milk in the upper container; wherein droplets of water are collected from a lower surface of the upper container.

2. The method of claim 1 wherein the fluid milk is added in the upper container and a same volume of water is added in the lower container.

3. The method of claim 1 wherein the upper container and the lower container are glass Petri dishes of same size.

4. The method of claim 1 wherein the method is conducted at ambient temperature.

5. The method of claim 1 wherein the droplets of water are collected in a sterile container for analysis.

6. The method of claim 1 wherein the fluid milk is pasteurized at 100° C. for 10 minutes before being concentrated.

7. The method of claim 6 wherein pasteurized milk is added in the upper container and an equal volume of water is added in the lower container.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 illustrates the device for concentration of milk consists of two glass Petri dishes fixed one over the other according to embodiment 2.

(2) FIG. 2 illustrates the device of FIG. 1 for concentration of bovine milk in a bench scale experiment placed beside window to be exposed to sunlight, but not to direct sunrays, at room temperature according to embodiment 5.

(3) FIG. 3 illustrates the device of FIG. 1 for concentration of camel milk in a bench scale experiment placed beside window to be exposed to sunlight, but not to direct sunrays, at room temperature according to embodiment 6.

(4) FIG. 4 illustrates water droplets started to appear on the lower face of the upper plate of the device for concentration of bovine milk in a bench scale experiment according to embodiment 3.

(5) FIG. 5 illustrates water droplets hanging from the lower face of the upper plate of the device for concentration of camel milk in a bench scale experiment according to embodiment 3.

DETAILED DESCRIPTION OF THE SEVERAL EMBODIMENTS

(6) To make the present disclosure clear, the following embodiments give detailed description.

Embodiment 1

(7) Obtain pasteurized milk from commercial source to use for concentration of milk in a bench scale experiment.

Embodiment 2

(8) To perform the experiment, arrange two glass Petri dishes one as upper plate 10 and the other as lower plate 12 as depicted in FIGS. 1-3. Put 60 ml of tap water in the lower plate and 60 ml of pasteurized milk in the upper plate. This device will be used for concentration of milk.

Embodiment 3

(9) Milk concentration device described in embodiment 2, is placed on the bench beside window with no curtains, to be exposed to sunlight, but not to direct sunrays, at room temperature. It was observed that water droplets 14 started to appear on the lower surface 20 of the upper plate 10 that contain milk after about 30 minutes as depicted in FIG. 4.

(10) FIG. 5 shows water droplets 24 increase in size with time and start to fall downwards from the lower surface 30 of the upper plate. The obtained water droplets are collected in sterile container for analysis. Removal of water droplets lead to formation of new water droplets.

Embodiment 4

(11) Observe concentration of milk for 24 hours by leaving the device described in embodiment 2 on place and continuously collect droplet water. After the observation period, the volume of milk in the upper plate, is about 30 ml, i.e. 30 ml of water is removed from milk giving concentration of 50%. To test the rate of milk concentration with time factor, arrange the device with 60 ml tap water in the lower plate and 60 ml milk in the upper plate. Leave the device for an observation period of 48 hours. After 24 hours, the volume of milk is about 30 ml giving concentration of 50% and after 48 hours, the volume of milk is about 10 ml i.e. 50 ml of water is removed giving concentration of 16.67%.

Embodiment 5

(12) In another embodiment, bovine raw fresh milk is obtained from private farms and pasteurized at 100° C. for 10 minutes. The device described in embodiment 2 is used for concentration of milk where 60 ml pasteurized fresh milk is put in the upper plate and 60 ml tap water in the lower plate. It is placed on the bench beside window with no curtains, to be exposed to sunlight, but not to direct sunrays, at room temperature for 24 hours. After the observation period, the volume of milk in the upper plate, is about 30 ml, i.e. 30 ml of water is removed from milk giving concentration of 50%.

Embodiment 6

(13) In another embodiment, camel raw fresh milk is obtained from private farms and pasteurized at 100° C. for 10 minutes. A device similar to that described in embodiment 2 is used for concentration of milk where 60 ml pasteurized camel fresh milk is put in the upper plate and 60 ml tap water in the lower plate. It is placed on the bench beside window with no curtains, to be exposed to sunlight, but not to direct sunrays, at room temperature for 24 hours. After the observation period, the volume of milk in the upper plate, is about 30 ml, i.e. 30 ml of water is removed from milk giving concentration of 50%.

REFERENCES

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