The document discusses advanced granulation technologies such as pneumatic dry granulation, freeze granulation, foamed binder technologies, melt granulation, steam granulation, moisture activated dry granulation, and thermal adhesion granulation that can replace traditional wet granulation methods. Granulation is used to improve properties like flow, compressibility, and drug release from tablets. Novel techniques offer advantages like suitability for heat-labile drugs, faster manufacturing, lower costs, and ability to achieve high drug loading.

1. Advanced Granulation
Technology
Presented by
S.Saravanan M.Pharm II nd Semester
Department of pharmaceutics
Faculty of pharmacy
Sri Ramachandra university

2. Granulation
Granulation is the process in which
primary powder particles are made to adhere to form
larger, multi-particle entities called granules.
 Pharmaceutical granules typically have a size
range between 0.2 and 4.0 mm, depending on
their subsequent use.
 After granulation the granules will either be
packed (when used as a dosage form), or they may
be mixed with other excipients prior to tablet
compaction or capsule filling.

3. Ideal characteristics of granules
The following are ideal characteristics of granules.
 Spherical shape
 Smaller particle size distribution with sufficient
fines to fill void spaces between granules
 Adequate moisture content [1-2 %]
 Good flow
 Good compressibility
 Sufficient hardness

4. Reasons for conducting granulation process
 To enhance the flow properties
 To prevent the problems of dust during
compression
 To produce uniform size particles
 To improve drug compression ability
 For regulate the drug releasing from the tablet.
 It is use full to densifying the material

5. Novel granulation technique
1. Pneumatic Dry Granulation
2. Freeze granulation Technology
3. Foamed Binder Technologies
4. Melt Granulation Technology
5. Steam Granulation
6. Moisture Activated Dry Granulation (MADG)
7. Granulex Technology
8. Thermal Adhesion Granulation Process (TAGP)

6. Pneumatic Dry Granulation
• Is based on a pneumatic dry granulation process, a
novel dry method for automatic or semi-automatic
production of granules.
• Enables flexible modification of drug load, disintegration
time and tablet hardness,
• Can achieve:
High drug loading, even with ‘difficult’ APIs and
combinations
Taste masking
Excellent stability,
• Is compatible with other technologies, such as
sustained release, fast release, coating,
• Is suitable for heat labile and moisture sensitive
drugs.
• Is the subject of a number of patent applications.

8. • Pneumatic Dry Granulation Replaces Wet
Granulation
Today, wet granulation is the most commonly
used granulation method. Formulation teams will
usually target a direct compression or dry
granulation formulation where possible but in
approximately 80% of the cases they end up with a
wet granulation formulation due to processing
issues.

9. PDG Technology and wet granulation comparison

10. Advantages of PDG Technology
The PDG Technology has a number of advantages to support the
above claims including the following:
 Good granulation results even at high drug loading have been
achieved even with materials known to be historically difficult to
handle.
 Faster speed of manufacturing compared with wet granulation.
 Lower cost of manufacturing compared with wet
granulation.
The system is closed offering safety advantages due to low dust
levels and potential for sterile production or handling of toxic
materials.
 The end products are very stable - shelf life may be enhanced,
Little or no waste of material, scale-up is straightforward,
 The granules and tablets produced show fast disintegration
properties, offering the potential for fast release dosage forms.
Release time can be tailored to requirements.

11. Foamed Binder Technologies (FBT)
 Foam granulation technique involves addition of liquid binders
as aqueous foam. The advantages of foamed binder addition
conventional binder addition method includes-
 No spray nozzle is used
 Improve process robustness
 Less water required for granulation
 Time efficient drying
 Cost effective
 Uniform distribution of binder
 No over wetting
 Applicable for water sensitive formulation

13. Melt granulation
Melt granulation or thermoplastic granulation is a technique that
facilitates the agglomeration of powder particles using melt able
binders, which melts or softens at relatively low temperature (50–
90 °C).
Cooling of the agglomerated powder and the consequent
solidification of the molten or soften binder complete the
granulation process.
Low melting binders can be added to the granulation process
either in the form of solid particles that melt during the process.
Melt granulation is an appropriate alternative to other wet
granulation techniques which are used for water sensitive
materials.

15. Steam Granulation
 In steam granulation as a new wet granulation technique, water
steam is used as binder instead of traditional liquid water as
granulation liquid.
 Steam, at its pure form is transparent gas, and provides a higher
diffusion rate into the powder and a more favorable thermal
balance during the drying step.
 After condensation of the steam, water forms a hot thin film on
the powder particles, requiring only a small amount of extra
energy for its elimination, and evaporates more easily.
 The advantages of this process include the higher ability of the
steam to distribute uniformly and diffuse into the powder
particles, production of spherical granules with larger surface
area, and shorter processing time ecofriendly (no involvement of
organic solvents).

16.  An equipment such as high-shear mixer coupled with a steam generator
would be enough for this technique. However, this method requires high
energy inputs for steam generation. Besides, this process is not suitable
for all binders and is sensitive to thermolabile drugs. The granules
produced by this process have higher dissolution rate due to increased
surface area of the granules compared to conventional wet granulation
process.

17. Moisture-Activated Dry Granulation (MADG)
This technique is a variation of conventional wet granulation
technique. It uses very little water to activate a binder and
initiate agglomeration.
This technique involves two steps,
1) wet agglomeration of the powder particles
2) moisture absorption or distribution.
Agglomeration is facilitated by adding a small amount of water,
usually less than 5% (1-4% preferably), to the mixture of drug,
binder and other excipients. Agglomeration takes place when the
granulating fluid (water) activates the binder.
Once the agglomeration is achieved, moisture-absorbing
material such as microcrystalline cellulose, silicon dioxide, etc is
added to facilitate the absorption of excess moisture.

18.  The moisture absorbents absorb the moisture from the
agglomerates, resulting in moisture redistribution within the
powder mixture, leading to relatively dry granule mixture. During
this moisture redistribution process, some of the agglomerates
remain intact in size without change, while some larger
agglomerates may break leading to more uniform particle size
distribution.
 It does not require an expensive drying step.
 The process does not lead to larger lumps formation since the
amount of water used is very small compared to usual wet
granulation.
 The application of MADG to an immediate-release and controlled-
release dosage forms showed the advantages of wet granulation
such as increased particle size, better flow and compressibility.
 Advantages of this technique is wide applicability, time efficiency
and less energy input, and involvement of few process variables
with suitability of continuous process.

19. Thermal Adhesion Granulation (TAG)
 Wei-Ming Pharmaceutical Company (Taipei, Taiwan) has
developed this technique, and the thermal adhesion granulation,
analogous to moist granulation, utilizes addition of a small
amount of granulation liquid and heat for agglomeration.
 Unlike moisture activated dry granulation which uses water alone
as granulation liquid, this process uses both water and solvent as
granulation liquid.
 In addition to this, heat is used to facilitate the granulation
process. In this process, the drug and excipient mixture is heated
to a temperature range of 30–130 °C in a closed system under
tumble rotation to facilitate the agglomeration of the powder
particles.
 This technique eliminates the drying process due to the addition
of low amount of granulation liquid, which is mostly consumed
by the powder particles during agglomeration. Granules of the
required particle size can be obtained after cooling and sieving.

21. Freeze Granulation Technology
• This technology was developed by swedish ceramic
institute (SCI) – freeze granulation (FG) – which enables
preservation of the homogeneity from suspension to dry
granules By spraying a powder suspension into liquid
nitrogen, the drops (granules) are instantaneously
frozen.
• In a subsequent freeze-drying the granules are dried by
sublimation of the ice without any segregation effects as
in the case of conventional drying in air.
• The result will be spherical, free flowing granules, with
optimal homogeneity.

22. Diagrammatic representation of freeze granulator (FDG)

23. Reference
 Granulation techniques and technologies: recent progresses -
Srinivasan Shanmugam. BioImpacts, 2015, 5(1), 55-63.
 Advanced granulation techniques for pharmaceutical
formulations - P. Thejaswini International Journal of Research in
Pharmaceutical and Nano Sciences. 2(6), 2013, 723 - 732.
 Advanced granulation technologies: a review – Bala krishna
Koppukonda. Indian Journal of Research in Pharmacy and
Biotechnology, ISSN: 2321-5674(Print); 2320 – 3471.
 Recent advances in granulation technology – Himanshusolanki,
Volume 5, Issue 3, November – December 2010; Article-008.
 Handbook of Pharmaceutical Granulation Technology, Third
Edition by Dilip.M.Parikh. Page no 406-456

24. Thank you
Seminar presented by:
S.Saravanan
M.Pharm (Pharmaceutics)
Sri Ramachandra University
Guided By:
Dr Saba maanvizhi