Answered
In Food Science
What is pectin?
a light brown powder, oral demulcent. Pectin is a gelatin found in ripened fruits. It helps jams and jellies to thicken and set.
Results for: Pectin
Answered
In Recipes
What is a replacement for pectin?
Pectin is a complex carbohydrate that is used to help make jams andjellies. You can add high-pectic fruits to your jam while cookingand then remove them at a later step. You c…an make your own pecticfrom apples or citrus rind. (MORE)
Answered
Is there a replacement for pectin?
I make approximately 100 cases of jam each summer, I am looking for a cheaper geling agent than store bought pectin.
Answered
What is fruit pectin in?
Pectin is a naturally occurring substance found in berries, apples,and other fruit. Pectins, also known as pectic polysaccharides.When heated together with sugar, it causes a …thickening that ischaracteristic of jams and jellies. Common Fruits Used to Make Jamsand Jellies.Fruit pectin is a dry pectin product that can be usedto make either cooked jams and jellies or quick-and-easy freezerjams and jellies.Fruit Pectin is made with pectin from real fruitand shortens the time . (MORE)
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Is pectin a protein?
Pectin is actually a naturally occurring complex carbohydrate, not a protein. It is found in many fruits, particularly apples. It is used in jam and jelly making to help firm …the final product. (MORE)
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In Food Science
What is a feature of pectins?
Pectins (liquid, powder, or natural fruit pectins) cause fruitjuices and syrup to thicken. Pectins are what make jams and jelliesthicken and gel.
Answered
In Food Science
What is the function of pectins?
Pectin is an important cell wall polysaccharide that allows primary cell wall extension and plant growth. During fruit ripening , pectin is broken down by the enzymes pect…inase and pectinesterase , in which process the fruit becomes softer as the middle lamellae break down and cells become separated from each other. In human digestion, pectin binds to cholesterol in the gastrointestinal tract and slows glucose absorption by trapping carbohydrates. Pectin is thus a soluble dietary fiber . Consumption of pectin has been shown to reduce blood cholesterol levels. The mechanism appears to be an increase of viscosity in the intestinal tract, leading to a reduced absorption of cholesterol from bile or food. In the large intestine and colon, microorganisms degrade pectin and liberate short-chain fatty acids that have positive influence on health. (MORE)
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Is pectin vegetarian or not?
Apparently so, it is extracted from cell walls of terrestrial plants and is used as a gelling agent, usually in Jams and Marmalades :)
Answered
In Uncategorized
How do you isolate pectin?
EXPERIMENT NO. 3 EXTRACTION AND ISOLATION OF PECTIN FROM CITRUS PEELS Introduction Pectins are polysaccharides composed mainly of polymers of D-galacturonic acid wh…ose monomers are joined by (1,4)-linkages. They also contain arabinose and galactose. The carboxyl group of galacturonic acid can be esterified to varying extents with methanol. The hydroxyl groups in the 2nd and 3rd positions menwhile can be acetylated to a lesser extent. In strong acidic medium, the glycosidic linkages are hydrolyzed. Pectin is most stable at pH 3-4. In basic medium, the ester and glycosidic linkages are split to the same extent. The latter is eliminated because the hydrogen atom in theC-5 position is more acidic compared to the galacturonic acid with free carboxyl groups. The degree of esterification is determined by the saponification of pectin followed by titration of the free carboxyl acid groups. The volumes obtained is used to calculate % methoxy content which is equal to the total mass of methoxy over the mass of the pectin sample multiplied by 100. Procedure A. Isolation B. Determination of methoxy content .
air-dried pectin weigh not more than 0.25 g + 2.5 ml EtOH + 0.5 g NaCl + 100 ml CO2-free distilled water + 6 drops phenol red .
yellow solution titrate with 0.1 N NaOH.
pink solution(V1) + 12.5 ml 0.25 N NaOH, shake stand for 30 minutes at room temperature in stoppered flask + 0.25 N HCl dropwise.
yellow solution titare with 0.1 N NaOH .
pink solution (V2) . (MORE)
Answered
In Biochemistry
What are pectins?
Pectins are a group of heterogeneous, branched, and highly hydratedpolysaccharides that contain large amounts of galacturonic acid,some of it in the form of methyl esters. Pec…tins are abundant infruits and are used in gelling agents. (MORE)