Description:FIELD OF THE INVENTION
[0001] The present disclosure relates generally to water purification compositions. Specifically, the present disclosure provides an effervescent composition for purification of water comprising Cucorbita pepo seeds.

BACKGROUND OF THE INVENTION
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Uncontaminated water is an essential requirement for the development of a healthy immune system. Hard water comprising high mineral content can damage organs and is a major cause of kidney stones. Usually, lead and chlorine are always present in normal tap water. Lead content in water, caused primarily due to leaching of lead from pipes, if reaches toxic levels may cause cardiovascular diseases, renal problems etc. Quality of water and water treatment has thus become an increasing concern in developing nations such as India, where the quality is poor, and proper water treatment is lacking. The high cost of treated water forces most people in rural communities to resort to readily available sources of low quality, thereby exposing them to water borne diseases. Safety and health are primary considerations for water purification. Access to safe water is a serious issue affecting people of all ages for those living in remote communities and far flung areas where availability of quality water sources is limited.
[0004] Many techniques of purification are known in the art. Water purifiers having filters have been used to filter out minerals such as calcium and magnesium present in water to make it soft enough for normal usage. However, water purifiers are equipments associated with high costs making it unfeasible for poor people. Alternatively, chlorine water purification tablets exist that use chemicals such as chlorine, iodine, or chlorine dioxide. These tablets are added to water, to disable microorganisms but other contaminants remain in water. Additionally, chlorine based tablets are ineffective in improving odor or taste and turbid waters stay turbid; instead chlorine tablets add an undesirable taste and smell to water.
[0005] The present disclosure provides an eco-friendly, and economical water purification composition that overcomes the deficiencies of conventional compositions/techniques of water purification.

OBJECTS OF THE INVENTION
[0006] An object of the present disclosure is to provide a composition for purification of water.
[0007] An object of the present disclosure is to provide an effervescent composition for purification of water comprising Cucorbita pepo seeds.
[0008] Another object of the present disclosure is to provide a composition that effectively maintains pH, and reduces turbidity, alkalinity and hardness of water.
[0009] Yet another object of the present disclosure is to provide a composition that is environmentally friendly and economical.

SUMMARY OF THE INVENTION
[0010] This summary is provided to introduce a selection of concepts in a simplified form that are further described below in Detailed Description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
[0011] Aspects of the present disclosure relates to water purification compositions. Specifically the compositions of the present disclosure are effervescent comprising a natural and readily available component - Cucorbita Pepo seeds. The disclosure provides effervescent compositions made from powder extracted from dried mature Cucorbita Pepo seeds, as an active coagulant in water.
[0012] In an aspect, the present disclosure provides an effervescent composition for purification of water comprising Cucorbita pepo seeds, citric acid, tartaric acid, a bicarbonate salt, and maltitol.
[0013] In an embodiment, the composition comprises Cucorbita pepo seeds as dried Cucorbita pepo seeds powder.
[0014] In an embodiment, the composition comprises Cucorbita pepo seeds in a weight percentage range of about 37.9% to about 38.4% of the composition. In an embodiment, the composition comprises citric acid in a weight percentage range of about 12.6% to about 12.8% of the composition. In an embodiment, the composition comprises tartaric acid in a weight percentage range of about 1.28% to about 1.5% of the composition. In an embodiment, the composition comprises a bicarbonate salt in a weight percentage range of about 28% to about 28.2% of the composition. In an embodiment, the composition comprises maltitol in a weight percentage range of about 15% to about 15.8% of the composition.
[0015] In an embodiment, the composition further comprises an excipient. The excipient may be selected from fragrance, preservative, flavoring agent, lubricant, sweetening agent, or combinations thereof.
[0016] In an aspect, the present disclosure provides an effervescent formulation for purification of water comprising Cucorbita pepo seeds, citric acid, tartaric acid, sodium bicarbonate, maltitol, and an excipient. The excipient may be selected from fragrance, preservative, flavoring agent, lubricant, sweetening agent, or combinations thereof.
[0017] In an embodiment, the effervescent formulation is an effervescent tablet formulation.
[0018] In another aspect, the present disclosure provides a method of production of the effervescent tablet formulation comprising the steps of: (a) drying, powdering and sieving the Cucorbita pepo seeds and converting them into granules by wet granulation; (b) weighing and mixing the citric acid, tartaric acid, sodium bicarbonate, maltitol, and the excipients with the granules to obtain a homogenous powder; and (c) compressing the powder to give the effervescent tablet formulation.
[0019] Other aspects of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learnt by the practice of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The following drawings form part of the present specification and are included to further illustrate aspects of the present disclosure. The disclosure may be better understood by reference to the drawings in combination with the detailed description of the specific embodiments presented herein.
Figure 1 provides a graphical representation of the variation of pH of contaminated water with dose of Cucorbita pepo seed powder in a composition, as per an embodiment of the present disclosure, used for treatment of contaminated water.
Figure 2 provides a graphical representation of the variation of turbidity (in Nephelometric Turbidity Units (NTU)) of contaminated water with dose of Cucorbita pepo seed powder in a composition, as per an embodiment of the present disclosure, used for treatment of the contaminated water.
Figure 3 provides a graphical representation of the variation of alkalinity (mg/L) of contaminated water with dose of Cucorbita pepo seed powder in a composition, as per an embodiment of the present disclosure, used for treatment of the contaminated water.
Figure 4 provides a graphical representation of the variation of hardness (mg/L) of contaminated water with dose of Cucorbita pepo seed powder in a composition, as per an embodiment of the present disclosure, used for treatment of the contaminated water.

DETAILED DESCRIPTION OF THE INVENTION
[0021] The following is a detailed description of embodiments of the disclosure. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0022] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0023] Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0024] In some embodiments, numbers have been used for quantifying weights, percentages, ratios, and so forth, to describe and claim certain embodiments of the invention and are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0025] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0026] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0027] Unless the context requires otherwise, throughout the specification which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense that is as “including, but not limited to.”
[0028] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein.
[0029] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0030] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified.
[0031] The description that follows, and the embodiments described therein, is provided by way of illustration of an example, or examples, of particular embodiments of the principles and aspects of the present disclosure. These examples are provided for the purposes of explanation, and not of limitation, of those principles and of the disclosure.
[0032] It should also be appreciated that the present disclosure can be implemented in numerous ways, including as a system, a method or a device. In this specification, these implementations, or any other form that the invention may take, may be referred to as processes. In general, the order of the steps of the disclosed processes may be altered within the scope of the invention.
[0033] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[0034] The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.
[0035] The terms ‘raw water’ and ‘contaminated water’ may be used interchangeably throughout this disclosure.
[0036] Aspects of the present disclosure relate to water purification compositions. Specifically the compositions of the present disclosure are effervescent comprising a natural and readily available active coagulant - Cucorbita Pepo seeds for purifying contaminated water.
[0037] In an embodiment, the present disclosure provides an effervescent composition for purification of water comprising Cucorbita pepo seeds, citric acid, tartaric acid, a bicarbonate salt, and maltitol.
[0038] In an embodiment, the composition comprises Cucorbita pepo seeds as dried Cucorbita pepo seeds powder. Maltitol acts as a natural binder for the composition.
[0039] In an embodiment, the composition comprises Cucorbita pepo seeds in a weight percentage range of about 37.9% to about 38.4% of the composition. In an embodiment, the composition comprises citric acid in a weight percentage range of about 12.6% to about 12.8% of the composition. In an embodiment, the composition comprises tartaric acid in a weight percentage range of about 1.28% to about 1.5% of the composition. In an embodiment, the composition comprises bicarbonate salt in a weight percentage range of about 28% to about 28.2% of the composition. In an embodiment, the composition comprises maltitol in a weight percentage range of about 15% to about 15.8% of the composition.
[0040] In an embodiment, the composition further comprises an excipient. The excipient may be selected from fragrance, preservative, flavoring agent, lubricant, sweetening agent, or combinations thereof.
[0041] In an embodiment, citric acid includes citric acid salts, hydrates, or derivatives thereof. In an embodiment, tartaric acid includes tartaric acid salts, hydrates, or derivatives thereof. In an embodiment, the bicarbonate salt may be potassium bicarbonate, sodium bicarbonate, lithium bicarbonate, magnesium bicarbonate, calcium bicarbonate, or combinations thereof. Preferably, the bicarbonate salt may be sodium bicarbonate.
[0042] In an embodiment, the composition is a natural coagulant and removes bacterial toxins. In an embodiment, the composition has adsorption properties that removes turbidity from water and reduces any undesired coloring. In an embodiment, the composition reduces hardness and maintains pH of water. In an embodiment, the composition is natural, environmentally safe, economical and is needed in low quantities.
[0043] In an embodiment, the composition may have an effervescence time of less than 2 minutes. Increased effervescence results in increased dissolution of the composition in water which means faster release of components and quicker initiation of water purification process.
[0044] In an embodiment, the composition when added to water produces pleasant tasting solution.
[0045] In an embodiment, the composition may reduce turbidity of water to less than 5 Nephelometric Turbidity Units (NTUs). In an embodiment, the composition may reduce alkalinity of water to up to 110 mg/L. In an embodiment, the composition may adjust pH of water to neutral pH of 7-8. In an embodiment, the composition may reduce hardness of water to up to 100 mg/L.
[0046] In an embodiment, the composition comprises a surprising synergistic effect.
[0047] In an embodiment, the present disclosure provides an effervescent formulation for purification of water comprising Cucorbita pepo seeds, citric acid, tartaric acid, sodium bicarbonate, maltitol, and an excipient. The excipient may be selected from fragrance, preservative, flavoring agent, lubricant, sweetening agent, or combinations thereof.
[0048] In an embodiment, the fragrance may be selected from mint, menthol, rose, sandalwood, or combinations thereof. In an embodiment, the preservative may be selected from magnesium carbonate, sodium benzoate, or combinations thereof. In an embodiment, the flavoring agent may be selected from strawberry, lemon, mint, citrus, menthol, vanilla, or combinations thereof. In an embodiment, the lubricant may be selected from talc, polyethylene glycol, magnesium stearate, or combinations thereof. In an embodiment, the sweetening agent may be selected from sucrose, glucose, aspartame, or combinations thereof.
[0049] In an embodiment, the formulation may be a solid, liquid or semi-solid. In an embodiment, the formulation may be selected from a tablet, capsule, powder, suspension, aerosol, gel, or solution.
[0050] In a preferred embodiment, the formulation is an effervescent tablet formulation.
[0051] In an embodiment, the tablets are easy to use, have storage stability and are readily transportable.
[0052] In another embodiment, the present disclosure provides a method of production of the effervescent tablet formulation comprising the steps of: (a) drying, powdering and sieving the Cucorbita pepo seeds and converting them into granules by wet granulation; (b) weighing and mixing the citric acid, tartaric acid, sodium bicarbonate, maltitol, and the excipients with the granules to obtain a homogenous powder; and (c) compressing the powder to give the effervescent tablet formulation.
[0053] In an embodiment, the Cucorbita pepo seeds may be dried at room temperature for a period of 3 to 7 days.
[0054] In an embodiment, a solvent is used for wet granulation which may be selected from isopropyl alcohol, acetone, ethanol, or combinations thereof.
[0055] In an embodiment, compression may be performed with direct compression.
[0056] In an embodiment, the present disclosure provides a method of treating contaminated water, wherein the method comprises the steps of: a) exposing the contaminated water to the effervescent composition as recited above, and (b) stirring to activate the composition and give treated water.
EXAMPLES
[0057] The disclosure will now be illustrated with working examples, which are intended to illustrate the working of the disclosure and not intended to take restrictively to imply any limitations on the scope of the present disclosure. Although methods and materials similar or equivalent to those described herein can be used in the practice of the disclosed methods and compositions, the exemplary methods, devices and materials are described herein. It is to be understood that this disclosure is not limited to particular methods, and experimental conditions described, as such methods and conditions may vary.
[0058] MATERIALS: The raw water sample was collected by immersing a sterilized plastic container until it was full from Sukhna lake and Ghaggar river flowing through Panchkula. Fresh seeds of Cucorbita Pepo used in this example were obtained from Vital herbs, New Delhi, India.
Example 1: Preparation of seed powder
[0059] The seeds were dried at ambient temperature of 23-25ºC for a period of 5 days before crushing. The seeds were crushed into fine powder which was sieved through 1.18mm standard sieve size. The powder was collected in a sterile bottle with air tight cap.
Example 2: Effervescent formulation
[0060] Three effervescent formulations were prepared by wet-granulation method based on the formulations provided in Table No. 1. Fine powder of seeds was prepared to slugs. Then, the slugs were crushed and passed through a sieve No. 20 to give seed granules. Other components were weighed and mixed with the seeds granules to obtain homogeneous powders.
Table No. 1: Effervescent formulation for purification of water
S. No. Component Formulation C1 (gms) Formulation C2 (gms) Formulation C3 (gms)
1 Cucorbita pepo seed powder 0.5 1.0 1.5
2 Citric acid 0.166 0.33 0.5
3 Tartaric acid 0.02 0.033 0.05
4 Sodium bicarbonate 0.37 0.74 1.1
5 Maltitol 0.20 0.41 0.62
6 Aspartame 0.016 0.033 0.05
7 PEG600 0.016 0.033 0.05
8 Strawberry flavor 0.03 0.06 0.1

The following pre-compressional parameters of the obtained powder were determined and have been tabulated in Table No. 2:
[0061] a) Particle size: Sieve method was used for this test. Sieves of different meshes (20, 25, 30, 35, 40, 70 and 100) were selected and placed on top of each other. 100 g of powder was placed on the upper sieve. After 10 min of mild shaking the amount remaining on each sieve was collected. Average diameter of powder was calculated by the following equation:

where xi = Average size of both the upper and lower sieves
[0062] b) Bulk density: A quantity of accurately weighed powder from each composition was introduced in to the measuring cylinder and then the volume was noted. Bulk density was expressed in g/ml and determined by the following formula:

[0063] c) Tapped density: A quantity of accurately weighed powder from each composition was introduced into a measuring cylinder. The cylinder was hit from the height of 2.5 cm every 2 s, up to volume plateau. Tapped density was calculated from the following formula:

[0064] d) Compressibility index and Hausner's ratio: These parameters explain flow properties of the powders. Compressibility index was expressed in percentage. The parameters are calculated by the following equation:

[0065] e) Angle of repose: It was measured by fixed funnel method. A funnel was secured with its tip at a given height h, above graph paper that was placed on a flat horizontal surface. Powders were carefully poured through the funnel until the apex of the conical pile just touches the tip of the funnel. The angle of repose (a) was then calculated by measuring the height (h) and radius (r) of the heap formed by the powder and using the eq.:
tan (a) =
where, a = Angle of repose
Table No. 2: Pre-compressional parameters
S. No. Parameter Formulation C1 Formulation C2 Formulation C3
1 Particle size (µ) 312.3 328.4 341.73
2 Bulk Density (g/mL) 0.77 0.86 0.69
3 Tapped Density (g/mL) 0.90 0.77 0.79
4 Compressibility index (%) 9.49 10.21 13.22
5 Hausner's ratio 1.20 1.21 1.38
6 Angle of repose 26.45 30.41 27.83
Example 3: Effervescent tablet formulation
Three tablet formulations were prepared from the granules of the three formulations of Table No. 1 of Example 2. The post-compressional parameters were evaluated for the tablets and have been tabulated in Table No. 3:
[0066] a) Weight variation: Twenty tablets were weighed individually and the average weight was calculated. The individual weights were then compared with the average weight. The tablets passed the test if not more than two tablets’ weight fell outside the percentage limit and weights of none of the tablets differs by more than double percentage limit.
[0067] b) Friability: A total of 20 tablets were weighed and placed in the friabilator (Erweka, TAP, Germany) and then operated at 25 rpm for 4 min. The tablets were then weighed again. The difference in the two weights was used to calculate friability as follows:
Friability % = ×100
[0068] c) pH: One tablet was dissolved in purified water. After complete dissolution, the solution’s pH was measured by a pH meter. This test was repeated 3 times for each formulation.
[0069] d) Carbon dioxide content: One effervescent tablet was dissolved in 100 ml sulfuric acid (1N) and weight variation was measured before and after dissolution. CO2 content was presented as mg. This experiment was conducted on three tablets for each formulation.
[0070] e) Hardness: The tablet hardness was determined by hardness tester.
[0071] f) Effervescence time: A tablet was placed in a glass containing purified water and effervescence time was measured by a stopwatch.
[0072] g) Thickness: Thickness was measured by using a calibrated dial caliper. 10 tablets of each formulation were evaluated.
[0073] h) Assay: A tablet was placed in a 100 ml volumetric flask and dissolved in phosphate buffer pH 5. After dilution, the amount of the drug was determined by UV spectrophotometer at 229.8 nm against blank. 10 tablets of each formulation were evaluated.
[0074] i) Content uniformity: After selecting 10 tablets randomly, the content of each tablet was separately determined.
Table No. 3: Post- compressional parameters of Tablet formulations
S. No. Parameter Formulation C1 Formulation C2 Formulation C3
1 Weight variation (%) 2.29 0.12
4.45
4.39 0.04

2 Friability (%) 0.969 0.01
0.924 0.02
0.976 0.05

3 pH 5.8 0.03
5.7 0.02
5.9 0.04

4 Carbon dioxide content 305 15
319 13
425 16

5 Hardness(N) 73.55 2.23
77.32 2.77
70.33

6 Effervescence time(s) 129
138
132

7 Thickness (mm) 5.42
5.68
5.48

8 Assay (mg) 2520
2550
2753

9 Content Uniformity (%) 3.26 3.70 3.02

Example 4: Water purification test
[0075] The three tablet formulations prepared (0.5 gm, 1.0 gms and 1.5 gms) in Example 3 were put into 1000 mL of collected river water. The solution was shaken properly for 1 minute for activation and extraction of coagulant and anti microbial proteins in the seed powder and was kept for magnetic stirring for 0.5 hour, 1 hour, and 2 hours respectively. The treated water was then allowed to stand undisturbed for 6 hours. Later, top layer of 100 mL was collected and subjected to post treatment analysis.
[0076] For water sample, physiochemical parameters were determined before and after treatment with the tablet formulations of Cucorbita Pepo seeds. The parameters determined were pH, Turbidity, Alkalinity, and Hardness.
[0077] a) pH: During the analysis, it was observed that after treatment with the formulation; pH of sample decreased from 8.5 to 7.3, 7.2, 7.1 for 0.5 gm/L, 1.0 gm/L, and 1.5 gm/L dose respectively [refer Table No. 4, Figure 1]. The pH of water after treatment was within the limit.
[0078] b) Turbidity: The initial turbidity for the raw water sample was 42 Nephelometric Turbidity Unit (NTU) which is beyond the limits of BIS/GOI/WHO standards. It was observed that after treatment the turbidity got reduced from 42 NTU to 5.7, 3.2, 2.1 NTU for 0.5gm/L, 1 gm/L, and 1.5 gm/L dose respectively [refer Table No. 4, Figure 2]. The turbidity reduced below 5 NTU. It was noted that the treatment improved the floc size and floc settled rapidly. This analysis shows that with increase in dose of formulation the turbidity got reduced to a good extent.
[0079] c) Alkalinity: Alkalinity of raw water was observed to be 310 mg/L. After treatment with the formulation, alkalinity got reduced to 151, 147, and 110 mg/L for 0.5gm/L, 1gm/L, and 1.5 gm/L dose respectively [refer Table No. 4, Figure 3]. The alkalinity present was within the range of BIS/WHO/GOI standards. It was observed that the formulation has a natural buffering capacity. The flocs were light however it confined the reduction of alkalinity.
[0080] d) Hardness: Hardness was 232 mg/L for raw water after treatment with the present formulation the hardness got reduced to 136, 116, and 103 mg/L for 0.5gm/L, 1gm/L, and 1.5 gm/L dose respectively [refer Table No. 4, Figure 4]. It was observed that hardness of water decreased with increase in dose of coagulants used. Hardness in raw water is due to the presence of calcium, magnesium and other hardness causing minerals. Thus as hardness increases, the required dosage of formulation would increase.
[0081] e) Color: The initial brown color of raw water sample completely reduces after treatment with the formulation indicating the formulation shows absorbent properties.
[0082] f) Effervescence time: The effervescence time for all the formulations was less than 2 mins that is within the range of Indian pharmacopeial standard.

Table No. 4: Parameters studied before and after treatment of waste water for the effervescent tablets
S. No. Parameters Before Treatment After Treatment (gm/Lit) BIS Standard
0.5 1 1.5
1. pH 8.9 7.3 7.2 7.1 6.5-8.5
2. Turbidity(NTU) 42 5.7 3.2 2.1 5max
3 Alkalinity(mg/L) 310 154 141 110 200-600
4. Hardness(mg/L) 232 136 116 103 500
5. Color Brown Colorless Colorless

[0083] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE PRESENT INVENTION
[0084] The present disclosure provides a composition that effectively maintains pH, and reduces turbidity, alkalinity and hardness of raw water.
[0085] The present disclosure provides a composition that is environmentally friendly and economical.
[0086] The present disclosure provides an effervescent tablet composition that is easy to use, has storage stability and is readily transportable.

We Claims:

1. An effervescent composition for purification of water comprising Cucorbita pepo seeds, citric acid, tartaric acid, a bicarbonate salt, and maltitol.
2. The composition as claimed in claim 1, wherein the composition comprises Cucorbita pepo seeds as dried Cucorbita pepo seeds powder.
3. The composition as claimed in claim 1, wherein the composition comprises Cucorbita pepo seeds in a weight percentage range of 37.9% to 38.4% of the composition.
4. The composition as claimed in claim 1, wherein the composition comprises citric acid in a weight percentage range of 12.6% to 12.8% of the composition.
5. The composition as claimed in claim 1, wherein the composition comprises tartaric acid in a weight percentage range of 1.28% to 1.5% of the composition.
6. The composition as claimed in claim 1, wherein the composition comprises the bicarbonate salt in a weight percentage range of 28% to 28.2% of the composition.
7. The composition as claimed in claim 1, wherein the composition comprises maltitol in a weight percentage range of 15% to 15.8% of the composition.
8. The composition as claimed in claim 1, wherein the bicarbonate salt is selected from potassium bicarbonate, sodium bicarbonate, lithium bicarbonate, magnesium bicarbonate, calcium bicarbonate, or combinations thereof.
9. An effervescent formulation for purification of water comprising Cucorbita pepo seeds, citric acid, tartaric acid, sodium bicarbonate, maltitol, and an excipient.
10. The formulation as claimed in claim 9, wherein the excipient is selected from fragrance, preservative, flavoring agent, lubricant, sweetening agent, or combinations thereof.
11. The formulation as claimed in claim 9, wherein the formulation is a tablet, capsule, powder, suspension, aerosol, gel, or solution.
12. The formulation as claimed in claim 9, wherein the formulation is an effervescent tablet formulation.
13. A method of production of the effervescent tablet formulation as claimed in claim 12, comprising the steps of: (a) drying, powdering and sieving the Cucorbita pepo seeds and converting them into granules by wet granulation; (b) weighing and mixing the citric acid, tartaric acid, sodium bicarbonate, maltitol, and the excipients with the granules to obtain a homogenous powder; and (c) compressing the powder to give the effervescent tablet formulation.
14. A method of treating contaminated water, wherein the method comprises the steps of: a) exposing the contaminated water to the effervescent composition as claimed in claim 1, and (b) stirring to activate the composition and give treated water.