FIELD OF INVENTION
This invention relates to the aqueous coating of tablet for to mask algae odor of Spirulina and coating materials comprises of HPMC, Phycocyanin and flavoring agents.

BACKGROUND AND OBJECTIVE OF INVENTION
Coated tablet are well-known in the art and have been existing over 500years. for ex.,, it is reported that the mucilage of psyllium seeds was used to coat tablets having an offending taste at least as early as the 9th century. Subsequently, it is reported that gold, silver, gelatin, and waxes are coating materials in tablet coatings.

Unquestionably, a significant portion, if not most, pharmaceutical and/or nutraceutical solid dosage forms are provided with a coating that typically performs a plurality of functions. Tablet coatings are used for protecting the active ingredient in the tablet core from air, moisture and light to improve stability and extend useful shelf life.

Coatings are also used for masking unpleasant taste and odor; and for making the tablet easier to swallow. In addition, tablet coatings can be used to improve the appearance of the tablet, and to improve the mechanical integrity of the tablet by making it more resistant to abrasion, attrition and the like.

Coating that are currently most commonly used include polymer film coating and sugarcoating. While it is conceivable that a sugar coating could be used to coat a natural product tablet core to provide coated tablet that consists almost entirely of Certified Organic ingredients and optional organic compliant ingredients, sugar coating has several major drawbacks. First, sugar coating techniques are often protracted and tedious multiple-step processes requiring skilled workers. Additionally, a relatively thick sugarcoating is needed to produce a protective coating that is not susceptible to significant damage during handling. Such coating undesirably adds significantly to the caloric value of the finished coated tablet. Further, sugar coating processes generally involve a sealing step in which a polymer film, such as one comprised of polyvinylpyrrolidone, is coated onto the tablet core to strengthen the tablet core and impart better product stability. Additionally, sugar coating processes typically require, after the sealing step, a subcoating step, a smoothing step, and a polishing step. Because of the various difficulties associated with sugar coating, it is becoming an increasingly less popular tablet coating, with the majority of tablet coatings being polymer film coatings that are typically applied continuously to a moving bed of tablet cores, usually employing a spray technique.

Film coatings are typically comprised of a synthetic polymer, a cellulose derivative, or other film-forming polymer that cannot be certified as an organic ingredient, and which cannot be designated as an organic compliant ingredient. Examples include polyvinylpyrrolidone, polyvinyl acetate, methylcellulose, ethylcellulose, hydroxypropyl methylcellulose.hydroxypropylcellulose, and certain acrylic polymers, such as methacrylate and methylmethacrylate copolymers, and certain other vinyl polymers, such as polyvinyl alcohol. In addition, the conventional film-coating compositions incorporate one or more plasticizers that are generally selected from materials that are not Certified Organic materials. But we can reduce the above said no organic certified ingredients in thin film coatings currently we have developed to overcome above said sugar and polymer film coating by using HPMC and natural pigment as coating materials. The detailed are described in summary.

PROBLEM SOLVED IN INVENTION:
1. Completely masked algae odorness by using natural flavoring agents in coating materials.
2. Protected and increased mechanical strengthen of tablet hardness.
3. Product stability is increased due to natural coating.

DESCRIPTION OF INVENTION
The coated tablets and tablet coating compositions of this invention are made from natural coating materials to avoid synthetic complaints. The coating composition can be formulated for use in spraying or other conventional film-forming techniques to form a finished tablet coating made primarily or entirely of natural ingredients and which exhibits excellent odor masking properties. In particular, the coating of this invention may be applied using preferred economical and efficient spray coating techniques to provide an all-natural coating comprised of relatively inexpensive ingredients, and which may have a desirable smooth texture and shiny appearance, while providing mechanical and chemical properties that protect the tablet core against damage and degradation.

ADVANTAGES OF THE INVENTION

• The invention provides a process with aqueous in the composition of coating materials comprising of HPMC, Phycocyanin and flavoring agents in one aspect.

• In another aspect, solid dietary supplements dosage forms, such as tablets and caplets, have been coated for a variety of reasons. These coatings have been used to protect the active ingredient from the surrounding environment, e.g., to mask the unpleasant taste and/or odor of the actives.

• In another aspect, thin coatings have also been used to improve the mechanical strength of the dosage.

• In another aspect, aqueous dispersion containing a water soluble film forming polymer, and a flavoring agent.

• In another aspect, an all natural tablet coating composition comprised entirely of Natural ingredients.

• In another aspect, this invention relates to the field of nutritional supplementation, and more particularly to coating for solid orally administered dietary supplements in a tablet form
The description and embodiments have been provided for sake of understanding the invention. But the scope of invention shall cover all modifications and variations that are possible with this disclosure to a skilled person in the art. All of such variations and modifications are all within the sport and scope of invention

WE CLAIM:
1. A process for coating a spirulina based tablets, characterized in that it consists of the successive stages of:

a. preparing atleast three homogenous colour solutions by stirring predetermined premix materials for each solution in water,

b. pre-coating the tablets by a spray a first solution onto the tablets loaded in a rotating pan, with hot air blow with outlet temperature at 50°C and inlet temperature at 45 - 48°C and for a period of atleast 3-5 hours,

c. coating the precoated tablets by spraying a second color solution to the precoated tablets in the rotating pan with hot air blow with outlet temperature at 50°C and inlet temperature at 45 - 48°C and for a period of 3 to 5 hours, further coating the coated tablets by spraying a third color solution onto the coated tablets in the rotating pan with hot air blow with outlet temperature at 50°C and inlet temperature at 45 - 48°C and for a period of 2 to 3 hours,

e. drying thereafter the coated tablets by hot air blow for a period of 15-20 minutes, and collecting and storing the dried coated tablets in a dry and dark storage area.

2. The process as claimed in claim 1, wherein the said first premix colored materials solution comprises of HPMC, wherein coat is a good binder.

3. The process as claimed in claim 1, wherein said second premix colored materials solution comprises of HPMC and phycocyanin, wherein this coating gives a blue color to the tablet.

4. The process as claimed in claim 1, wherein said third premix colored material solution comprises of HPMC, phycocyanin and alongwith natural vanilla powder, wherein this coating is a odor protector.

5. The process as claimed in claim 1, 2, 3 and 4, wherein each of the premix colored materials solutions are sieved through 80 mesh size siever.

6. The process as claimed in claim 1, wherein the third premix color materials solution is 1/3 volume of second premix color materials solution.

7. A coated spirulina based tablets characterized in that the coating is Phycocyanin

8. A coated spirulina based tablets characterized in that the coating is phycocyanin and vanilla.

9. A coated spirulina based tablets, characterized in that the coating is phycocyanin and a flavoring agent.

10. A coated spirulina based tablets characterized in that it has three coatings and in that a first premix coating is HPMC, a second coating is HPMC and phycocyanin and a final third coating is HPMC, phycocyanin and a flavoring agent.
11. The coated tablet as claimed in claim 10, wherein the moisture level is 3.5%.

Applicant's Name: E.I.D. Parry (India) Limited
Title: A COATED SPIRULINA BASED TABLETS AND A PROCESS FOR COATING A
SPIRULINA BASED TABLETS