PECTINE

Pectine occurs as a coarse or fine, yellowish-white, odorless powder that has a mucilaginous taste.
Pectine is obtained from the diluted acid extract from the inner portion of the rind of citrus fruits or from apple pomace.
Pectine is a heteropolysaccharide, a structural polymer contained in the cell walls and middle lamellae of terrestrial plants.

CAS Number: 9000-69-5
Molecular Formula: C6H12O6
EINECS Number: 232-553-0

Synonyms: alpha-D-Galacturonic acid, alpha-D-galactopyranuronic acid, 6294-16-2, NSC-9248, UNII-CEP8I6411H, CEP8I6411H, Galactopyranuronic acid, alpha-D-, CHEBI:33885, DTXSID60873878, RefChem:6807, DTXCID001012078, D-GALACTURONIC ACID alpha-FORM, alpha-D-GALACTURONIC ACID (CONSTITUENT OF CRANBERRY LIQUID PREPARATION), galacturonate, Calcium pectate, D-Galacturonan, (2S,3R,4S,5R,6S)-3,4,5,6-tetrahydroxyoxane-2-carboxylic acid, Galactopyranuronic acid, .alpha.-D-, (2S,3R,4S,5R,6S)-3,4,5,6-Tetrahydroxytetrahydro-2H-pyran-2-carboxylic acid, .alpha.-D-Galacturonic acid, Pectinea, Pectineas, Pectine, Pectines, Pektine, Pektin, pectic substance, delta-galacturonan, delta-Galacturonate, delta-Galacturonic acid, ALPHA-D-GALACTURONIC ACID HYDRATE, bmse000228, D-Galacturonic acid (9CI), Alpha-delta-galacturonic acid, Galacturonic acid, D- (8CI), SCHEMBL12468784, CHEBI:15446, Alpha-delta-galactopyranuronic acid, (1,4-alpha-D-Galacturonosyl)n+1, EBC-14384, DB03511, D-GALACTURONIC ACID .ALPHA.-FORM, G0010, NS00069868, D-GALACTURONIC ACID .ALPHA.-FORM [MI], EN300-6482676, Q27094449, (2S,3R,4S,5R,6S)-3,4,5,6-Tetrahydroxytetrahydro-2H-pyran-2-carboxylicacid, .ALPHA.-D-GALACTURONIC ACID (CONSTITUENT OF CRANBERRY LIQUID PREPARATION) [DSC], alpha-D-galacturonic acid, D-galacturonic acid, galacturonic acid, ALPHA D-GALACTURONIC ACID, APPLE PECTIN;APPLE PECTIN FOOD GRADE - SPECIAL;APPLE PECTIN, FOOD GRADE;APPLE PECTIN, USP;PECTIN, CITRUS USP SLOW SET;Polyhalactyronic acid;POLY-D-GALACTURONIC ACID METHYL ESTER;POLYGALACTURONIC ACID METHYL ESTER

Pectine component of Pectine is galacturonic acid (a sugar acid derived from galactose) which was isolated and described by Henri Braconnot in 1825.
Commercially produced Pectine is a white-to-light-brown powder, produced from citrus fruits for use as an edible gelling agent, especially in jams and jellies, dessert fillings, medications, and sweets; as a food stabiliser in fruit juices and milk drinks; and as a source of dietary fiber.
Pectine is a natural polysaccharide found in the cell walls of plants, especially in fruits such as apples, citrus fruits, and berries.

Pectine is primarily composed of galacturonic acid units linked together in long chains.
Pectine plays a structural role in plants, helping to bind cells together and maintain firmness.

Chemically, Pectine is classified as a heteropolysaccharide and is rich in partially methyl-esterified galacturonic acid.
The degree of esterification strongly influences its physical behavior, particularly its ability to form gels.
Based on this property, Pectine is commonly categorized as high-methoxyl or low-methoxyl Pectine.

Pectine is insoluble in cold water but swells and dissolves when heated in aqueous systems.
In the presence of suitable conditions such as sugar, acid, or calcium ions, it forms a three-dimensional gel network.
This gel-forming ability is the key characteristic that makes Pectine technologically important.

Pectine occurs naturally during fruit ripening, where it undergoes enzymatic breakdown.
This transformation is responsible for the softening of fruit as it matures.
The natural variability of Pectine structure depends on plant source, maturity, and extraction method.

Pectine is considered a dietary fiber and is not digested in the human small intestine.
Instead, it is fermented by gut microbiota in the large intestine.
This fermentation contributes to its physiological relevance in human nutrition.

Pectine is extracted industrially from citrus peels and apple pomace using hot acidic water.
After extraction, it is purified, concentrated, and dried into powder form for commercial use.
Different extraction and processing conditions produce Pectines with varying gelling strength and functionality.

The molecular structure of Pectine is complex and heterogeneous.
In addition to galacturonic acid, it contains neutral sugars such as rhamnose, arabinose, and galactose.
These side chains influence solubility, viscosity, and interaction with other biopolymers.

Pectine exhibits strong water-binding capacity and contributes to viscosity in aqueous systems.
Even at low concentrations, it can significantly thicken solutions.
This property makes it valuable not only as a gelling agent but also as a stabilizer and texture modifier.

In biological systems, Pectine plays a role in plant defense mechanisms.
Pectine can influence cell wall porosity and resistance to pathogen invasion.
Enzymatic modification of Pectine is also involved in plant growth and development.

From a nutritional perspective, Pectine is classified as a soluble dietary fiber.
Pectine can slow gastric emptying and reduce the absorption rate of sugars and lipids.
These effects are associated with improved glycemic control and cholesterol management.

Melting point: 174–180 °C (decomp.)
Storage temperature: Room temperature
Solubility: H₂O: soluble, 0.02 g/10 mL; clear to hazy, colorless to very faintly yellow
Form: Powder
Color: Yellow to pale brown
Odor: White to yellow powder or syrupy concentrate; practically odorless
Biological source: Plant fruit (apple)
Water solubility: Soluble in water
Merck Index: 14,7063
Cosmetics ingredients functions: Binding; viscosity controlling; emulsion stabilising

Pectine shows significant functional differences depending on its degree of esterification and molecular weight.
High-methoxyl Pectine forms gels in the presence of high sugar concentrations and acidic conditions, while low-methoxyl Pectine gels in the presence of calcium ions.
This distinction allows Pectine to be tailored for a wide range of formulations.

Pectine interacts strongly with other food components such as sugars, acids, proteins, and minerals.
These interactions influence texture, stability, and mouthfeel in complex systems.
Because of this, Pectine is often used in combination with other hydrocolloids to fine-tune product performance.

In pharmaceutical applications, Pectine is valued for its biocompatibility and biodegradability.
Pectine is used as an excipient in tablets, controlled-release drug systems, and encapsulation matrices.
Its ability to swell and gel in aqueous environments makes it useful for targeted drug delivery.

Pectine also has applications in biomedical and tissue engineering research.
Modified Pectines are investigated for wound dressings, scaffolds, and cell-support materials.
Their mild gelation conditions are compatible with sensitive biological systems.

Chemically modified Pectines, such as amidated or low-ester Pectines, expand its functionality.
These derivatives offer improved gel strength, flexibility, and stability under varying pH and temperature conditions.
Such modifications enable Pectine to be used beyond traditional food applications.

From an environmental perspective, Pectine is a renewable and sustainable biopolymer.
Pectine is produced from agricultural by-products, reducing waste and adding value to food processing streams.
This sustainability aspect supports its growing use as a natural alternative to synthetic additives.

Pectine is a purified carbohydrate product isolated from the rinds of citrus fruits or green apples. 
Its major constituent is polygalacteronic acid, and it is almost completely digested and absorbed in the intestine. 
Pectine became popular as a simple remedy for diarrhoea in the early 1900s. 

Pectine does not affect the frequency of stool or stool weight. Use of such products diverts attention away from more important aspects of treatment, such as rehydration, proper nutrition and in the case of cholera and dysentery, appropriate antibiotics.
Pectine is a complex carbohydrate, which is found both in the cell walls of plants, and between the cell walls, helping to regulate the flow of water in between cells and keeping them rigid.
Pectine is used as a thickening agent, and could be considered one of the most natural types around. 

The first version of this substance available for purchase was derived from apples, which have a high amount of it. 
There are other fruits that naturally contain this gelling agent, including many plums and pears. 
The properties of Pectine were discovered and identified by the French chemist and pharmacist, Henri Braconnot, and his discovery soon led to many manufacturers making deals with makers of apple juice to obtain the remains of pressed apples (pomace) that were then produced in a liquid form.

Uses Of Pectine:
In the preparation of jellies and similar food products: Owens et al., "Factors Influencing Gelation with Pectine" in Natural Plant Hydrocolloids, Advances in Chemistry Series (ACS, Washington, 1954) pp 10-15.
Pectine is used as a thickening agent in cosmetic preparations given its gelling properties. 
It is soothing and mildly acidic and extracted from apples or the inner portion of citrus fruit rind.

Pectine is a gum that is the methylated ester of polygacturonic acid. 
Pectine is obtained from citrus peels and apple pomace. 
The degree of meth- ylation (dm) or esterification (de) refers to the percentage of acid groups which are present as the methyl ester. 

Pectine is divided into two main groups: high methoxy (hm) Pectine, having 50% or greater esterification, and low methoxy (lm) Pectine, having less than 50% esterification. 
These Pectines gel under different conditions. 
The lm Pectines are subdivided into low methoxy amidated Pectine and low methoxy conventional Pectine. 

Pectine is a broad group of pectic substances that contain more than a negligible proportion of methyl ester groups and all the unes- terified carboxyl groups are free. 
The divalent salts of Pectine are only slightly soluble in water and must be converted to the sodium or potassium form for dissolution.
Pectine is a high molecular weight polyuronide. 

Pectine is related to the carbohydrate family and is present in fruits and berries.
Pectine occurs in varying amounts in fruits and plants. 
It contains carbon, hydrogen and oxygen, and on hydrolysis, yields glycosides and galachronic acid. 

Pectine can form a gel when it absorbs water.
Commercially, the primary source of the commonly used Pectine is lemon and lime peel; other citrus fruits l i e orange and grapefruit may also be used. 
Pectine is widely used in the food industry, principally in gel preparation.

Pectine is also used in making drugs, protective colloids, emulsifying agents, etc.
Pectine is widely used in the food industry as a gelling agent, thickener, and stabilizer.

It is essential in the production of jams, jellies, marmalades, and fruit preserves, where it provides structure and texture.
Pectine also stabilizes fruit preparations in yogurts, desserts, and beverages.

In confectionery products, Pectine is used to create gels with a clean bite and good flavor release.
Pectine is commonly found in gummy candies, fruit snacks, and chewy sweets.
Compared to gelatin, Pectine allows the production of vegetarian and vegan products.

Pectine is used in the dairy industry to improve texture and stability.
It prevents whey separation in yogurt drinks and acidified milk beverages.
Pectine also enhances mouthfeel in low-fat dairy formulations.

In pharmaceutical applications, Pectine serves as an excipient and drug delivery material.
Pectine is used in tablets, capsules, and controlled-release formulations due to its biocompatibility.
Pectine-based systems are particularly useful for colon-targeted drug delivery.

Pectine is applied in medical and biomedical fields for wound dressings and gels.
Its ability to form soft, moisture-retaining gels supports wound healing.
Modified Pectines are also studied for use in tissue engineering and regenerative medicine.

In nutrition and health products, Pectine is used as a source of soluble dietary fiber.
Pectine is included in supplements aimed at cholesterol reduction and digestive health.
Pectine also helps regulate blood sugar absorption by slowing gastric emptying.

In industrial and environmental applications, Pectine is used as a stabilizer and binder.
It can act as a biodegradable alternative to synthetic polymers.
This makes it valuable in sustainable packaging, coatings, and agricultural formulations.

Pectine is used in beverage formulations to stabilize fruit pulps and cloudiness in juices and soft drinks.
It helps prevent phase separation and sedimentation during storage.
This improves visual quality and shelf stability.

In bakery and cereal products, Pectine is applied to improve moisture retention and softness.
It slows staling and enhances texture in fruit-filled pastries and baked goods.
This contributes to longer shelf life and better mouthfeel.

Pectine is utilized in plant-based and vegan food products as a functional hydrocolloid.
It replaces gelatin or animal-derived stabilizers in desserts, spreads, and sauces.
This supports clean-label and plant-based product development.

In cosmetic and personal care products, Pectine is used as a natural thickener and stabilizer.
It improves viscosity and texture in creams, lotions, and gels.
Its natural origin and mild skin compatibility make it attractive for sensitive-skin formulations.

Pectine is applied in microencapsulation technologies.
It is used to encapsulate flavors, vitamins, probiotics, and active ingredients.
This protects sensitive compounds and enables controlled release.

In agriculture, Pectine-based formulations are explored for seed coatings and soil conditioners.
They help improve water retention and controlled nutrient release.
These applications support sustainable and environmentally friendly farming practices.

Pectine is also used in edible films and biodegradable packaging materials.
It forms flexible, transparent films that can carry antioxidants or antimicrobials.
This makes it promising for food preservation and sustainable packaging solutions.

Safety Profile Of Pectine:
Low toxicity by subcutaneous route. When heated to decomposition it emits acrid smoke and irritating fumes.
Pectine is generally recognized as safe and poses minimal health hazards under normal conditions of use.
It is widely consumed as a food ingredient and dietary fiber without toxic effects.

Regulatory agencies classify Pectine as a safe food additive.
Ingestion of large amounts may cause mild gastrointestinal effects.
These can include bloating, gas, or abdominal discomfort due to fermentation in the gut.

Such effects are usually temporary and dose dependent.
Pectine dust may cause mechanical irritation when inhaled.
In occupational settings, airborne powder can irritate the nose, throat, or respiratory tract.

Proper ventilation and dust control are recommended during handling.
Skin and eye contact with dry Pectine powder may cause mild irritation.

This is mainly due to dryness or physical abrasion rather than chemical reactivity.
Rinsing with water is usually sufficient to relieve discomfort.