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Glossary

PAT pharma (Process Analytics Technology)

Process analytical technology (PAT) is defined by the FDA as a mechanism to design, analyze, and control pharmaceutical manufacturing processes through the measurement of critical process parameters that affect critical quality attributes of an active pharmaceutical ingredient (API).

Continuous manufacturing

Continuous manufacturing is a method of producing pharmaceutical products from start to finish on a single, uninterrupted production line. This process is in contrast to batch manufacturing, which requires transporting, testing, and re-feeding materials from one process to the next.

OCT (Optical Coherence Tomography)

Optical coherence tomography (OCT) is a technique for obtaining sub-surface images of translucent or opaque materials at a resolution equivalent to a low-power microscope. It is effectively ‘optical ultrasound’, imaging reflections from within tissue to provide cross-sectional images. 

Tablet coating

Tablet coating is a process by which an essentially dry, outer layer of coating material is applied to the surface of a dosage form in order to confer specific benefits over uncoated variety. Coatings may be applied to various oral dosage forms such as particles, powders, granules, crystals, pellets and tablets.
The objectives of tablet coating include:
– Masking the bitter taste and unpleasant odor of some drugs.
– Improving product appearance for aesthetic or commercial purposes (aiding in brand identification).
– Improving product appearance for aesthetic or commercial purposes (aiding in brand identification).
– Preventing drug-induced irritation at a specific site within the gastrointestinal tract, e.g. the stomach for non-steroidal anti-inflammatory drugs (NSAIDs).
– Protecting the drug from the external environment (particularly air, moisture, and light) in order to improve stability.
– Enhancing ease of swallowing large dosage forms.
– Facilitating handling, particularly in high-speed packaging/filling lines, and automated counters in pharmacies, where the coating minimizes cross-contamination due to dust elimination.
– Reducing the risk of interaction between incompatible materials.
– Retarding loss of volatile ingredients.
– Modifying and/or controlling the rate of drug release as in repeat-action, delayed-release (enteric-coated) and sustained-release products.
– Controlling the site of action of drugs e.g., colon delivery.
– Avoiding inactivation of drug in the stomach e.g., enteric coating

Thickness

The thickness of a film coating on a product can vary depending on the specific requirements of the drug product. The thickness of the coating can be measured using various techniques, including lever micrometer, OCT, magnetic dry film thickness gauge, eddy current dry film thickness gauge, and destructive testing 

Coating process

In the pharmaceutical industry, coating process is a technique used to apply a coating to the surface of a dosage form in order to confer specific benefits over uncoated variety 1. Coatings may be applied to various oral dosage forms such as particles, powders, granules, crystals, pellets and tablets 1.

Enteric coating

An enteric coating, also known as gastro-resistant coating is a barrier applied to oral medication that controls the location in the digestive tract where it is absorbed

Functional coating

Functional coatings are a class of coatings that provide additional functions beyond the traditional protection and decoration properties.

Dissolution

Dissolution test is done to verify the release of drug in the solution for a pharmaceutical products.

Compression force

Is the force applied in a tablets press in order to obtain a tablet

Coater

It is a device to apply a coating to a product

Inspection

Involve assessing manufacturing facilities, processes, and quality control to ensure compliance with regulatory standards.

Pharmaceutical

Pharmaceutical are substances used for medical treatment including, including drugs and medication.

Uncoated tablets

Uncoated tablets are solid dosage forms of pharmaceutical that do not have a coating or outher layer.

Coated tablets

Coated tablets are pharmaceutical whit a layer of coating applied to the outer surface of the tablet

Compression index

The compression index in pharmaceuticals refers to the ratio of the final tablet volume to the initial volume of the powder blend before compression.

Granules

Small, free-flowing particles formed by agglomeratingor combining powdered ingredients

Pellets

Are small spherical or spheroidal multiparticulate units

Top spray coating

It is a fluid bed tecnique use to coat particles with a nozzle place in the top of the machine

FDA

Food and Drung Administration, is a regulatory agency responsible for protecting and promoting public health by controlling and supervising the safety

Device

Any instrument, apparatus, contrivance, or machine designed for a particular purpose

Fluid bed coater

A pharmaceutical processing equipment used in the film coating of solid dosage forms like tablets, pellets, or granules.

Density

Measure of mass per unit volume and is typically expressed in units such as grams per cubic centimeter (g/cm³) or kilograms per liter (kg/L).

Roughness

The unevenness or irregularity of a surface.

Homogeneity

The state of being uniform, consistent, or similar throughout.

Pan coater

Machine used for coating tablets or other solid dosage forms

In-line

In the pharmaceutical industry, “in-line” can be used to describe a production process in which analyses are performed during production itself, rather than on samples taken after production 3. This approach can help to identify and correct any issues during production, reducing the risk of batch failures and product recalls 3.

Real-time batch release

In the pharmaceutical industry, real-time batch release is a process that allows for the release of a batch of a drug product based on real-time data collected during the manufacturing process. This approach is intended to provide a more efficient and streamlined process for batch release while maintaining the required quality standards.

Batch release

In the pharmaceutical industry, batch release is a process that ensures that each batch of a drug product has been manufactured, tested, and released in compliance with regulatory requirements 1. The batch release process is typically performed by a Qualified Person (QP) who is responsible for certifying that the batch meets the required quality standards

Interferometry

Interferometry is a technique that uses the interference of superimposed waves to extract information. It is used in various fields of science and industry, such as astronomy, optics, metrology, and spectroscopy. In optical coherence tomography (OCT), interferometry is used to capture images of the internal structure of a sample at different depths. This is achieved by measuring the time delay and intensity of light reflected from different layers of the sample 

Spectrometer

A spectrometer is a scientific instrument used to separate and measure spectral components of a physical phenomenon 1. Spectrometers are used in many applications, including industrial automation, automotive systems, medical devices, and consumer electronics 

Depth scan measurement

In the field of optical coherence tomography (OCT), depth scan measurement refers to the ability of an OCT system to capture images of the internal structure of a sample at different depths. This is achieved by measuring the time delay and intensity of light reflected from different layers of the sample

Direct thickness measurement

Direct thickness measurement is a term used in the field of measurement technology to describe the ability to measure the thickness of an object without contact 1. There are several techniques available for direct thickness measurement, including optical coherence tomography (OCT), ultrasound imaging, and laser scanning

Sensor

The term “sensor” can refer to a wide range of devices that detect and respond to physical stimuli such as light, sound, temperature, pressure, and motion. Sensors are used in many applications, including industrial automation, automotive systems, medical devices, and consumer electronics.

Axial resolution

Axial resolution is an important parameter in optical coherence tomography (OCT) imaging. It refers to the ability of an OCT system to distinguish two points that are longitudinally adjacent to each other in the image 12. The axial resolution of an OCT system is determined by the spectral bandwidth of the light source and is inversely proportional to it

Acquisition rate

The term “acquisition speed” can have different meanings depending on the context. For example, in the field of spectrometry, acquisition speed refers to the rate at which a spectrometer can acquire data points 1. In the context of data acquisition systems, acquisition speed refers to the rate at which data can be sampled and converted from analog to digital format 2

Coating thickness

Coating thickness in pharmaceutical application can be measured with different methods directly, using calipers, OCT or indirectly, using weigh gain, NIR, Raman

Coextruded

They are pharmaceutical forms obtained extruding one material containing the active ingredient inside another material that allows a programmed release of the active ingredient

Transdermal patches

They are pharmaceutical forms in form of patches layered with an active ingredient. Applied to the skin the active ingredient is slowly released.

Wurster coater

It is a fluid bed equipment use to coat particles with a nozzle place in the bottom. It allows very homogineous coating

Scattering coating

It is a type of coating that applied to a tablet prevent the light to pass it creating scattering to light beams

OSeeT

OCT device produced by Phyllon

OCT probe

It is the sensor that connected to the OCT unit transmit the light beam and receive the reflected light