pt 2 Flashcards
simplest does not occur free in nature.
Dioses (hydroxyacetaldehyde)
usually in the form of phosphate esters.
Trioses (glyceraldehyde and dihydroxyacetone)
not found in the free state.
tetroses
occur commonly in nature, usually as products of hydrolysis of hemicellulose, gums and mucilages.
pentoses
most important monosaccharides found in plants, first detectable sugars synthesized by plants and forms units from which most polysaccharides are constructed.
hexoses
found in sweet fruits, honey, and invert sugar.
D-Fructose (Levulose) D-Glucose (Dextrose)
important in the glucose metabolism of animals and in the photosynthesis processes of plants.
Heptoses
Only disaccharide that occurs abundantly in free state in plants (fruit juices, sugar cane, sugar beet and sap of certain maples). It yield sugar – with epimolecular quantities of glucose and fructose.
Sucrose
seldom occur in free state. Produced in large quantities by hydrolysis of starch during the germination of barley and other grains.
Maltose
milk sugar, hydrolyzed into glucose and galactose.
Lactose
Sucrose Common Name, Source, Scientific Name, Uses
Sugar/Saccharum, Sugar Cane, Saccharum officinarum/Beta vulgaris
Is usually obtained by the hydrolysis of starch Source: Grapes and other fruits
Dextrose
Dextrose Source and Scientific Name and Family
Grapes and other Fruits, Vitis vinifera, Vitaceae
crystalline dextrose monohydrate that has undergone less rigorous purification.
Dextrose excipient
purified mixture of saccharides (not less than 93% dextrose) prepared by controlled enzymatic hydrolysis of starch.
Dextrates
product of incomplete hydrolysis of starch.
• Colorless or yellowish, thick syrup liquid that is nearly odorless and taste sweet.
Liquid Glucose
Fruit Sugar
Obtained by the inversion of aqueous solutions of sucrose and the
subsequent separation of fructose from glucose.
Fructose
Milk Sugar
Crystallized from whey
Impure crystals are redissolved in water, decolorized with charcoal, and recrystallized.
Lactose
Semi-synthetic sugar prepared by alkaline rearrangement of lactose.
Yields lactose and galactose upon hydrolysis.
Lactulose
White, opaque liquid that is an emulsion of minute fat globules suspended in a solution of casein, albumin, lactose and inorganic salts.
Cow’s Milk
Milk/Dairy products Formed when fat globules in milk unite.
Butter
Liquid left after fat globules unite.
Butter milk
Milk left after separation of cream.
Skimmed Milk
Formed when skimmed milk is treated with renin.
Coagulum
Produced when coagulum is treated.
Cheese
Liquid separated from the coagulum.
Whey
Wood Sugar
A pentose obtained by boiling corn cobs, straw or similar materials with dilute acid to hydrolyze the xylan polymer.
Xylose
Classification of Polysaccharides
Complex Polysaccharides
Homoglycans
Gums and Mucilages
Algal Gelling Agents
Usually hydrolyzed to a component Hexose and are therefore called Hexosans,
Complex Polysaccharides
yields glucose (glycosan/glucan)
Starch
yields fructose (fructosan/fructan)
Inulin
forms the primary cell wall in plants
Cellulose
high molecular weight polysaccharides but are considerably more soluble and more easily hydrolyzed.
Hemicellulose
Natural plant hydrocolloids that may be classified as anionic or nonionic polysaccharides or salts of polysaccharides.
Gums and Mucilages
Dispersion of gum in water.
Mucilage
General term for group of polysaccharides present in the primary cell wall of all seed-bearing plants acts as an intercellular cementing material together with cellulose and hemicellulose.
Pectin
Elevation of plants, maritime climate
Altitude
Amount and intensity of light
Day-Length and Radiation Characteristics
Humidity, Water-holding properties of soil
Rainfall
Major factors controlling the development and metabolism of plants
Temperature
Most abundant organic molecules in nature.
First product formed in photosynthesis.
CARBOHYDRATES
Emperical formula for simpler carbohydrates
(CH2O)N
Functions of Carbohydrates
Storage form of energy in the body.
Serves as structural component of many organisms.
Ingredient in food and beverage industries.
Excipients in pharmaceutical formulations.
Pharmacologic effect.
Number of aldohexose, ketohexose, isomers, and free state
16 possible aldohexose, 8 ketohexoses
48 isomers (alpha and beta forms)
2 occur in the free state:
Monosaccharide with 3 carbon atoms
Trioses (Glyceraldehyde)
Monosaccharide with 4 carbon atoms
Tetroses (Erythrose)
Monosaccharide with 5 carbon atoms
Pentoses (Ribose)
Monosaccharide with 6 carbon atoms
Hexoses (Glucose)
Monosaccharide with 7 carbon atoms
Heptoses (Sedoheptulose)
Monosaccharide with 8 carbon atoms
Nonoses (Neuraminic Acid)
sugar beets sliced into small, limp silvers
COSETTES
it rises on top of sugar cane and removed
ALBUMIN
Sugar Cane is filtered and decolorized with ____
Sulfur dioxide
Sugar cane is crushed between ___
Iron rollers
Sugar cane is neutralized by boiling it with ___
Lime
Uses of Dextrose
Nutrient
Dextrose injection
Alcohol and Dextrose injection
Dextrose and NaCl injection
Uses of fructose
Food for Diabetic Patient
Contained in infant feeding formula
Ingredient of fructose injection and sodium chloride injectiob
Uses of lactose
Tablet diluent
Nutrient in infant’s food
Establishes intestinal microflora
Use of Lactulose
Laxative
Algal Gelling Agents
Agar
Alginic Acid
Chemically defined as substances belonging to the carbohydrates group that is ketonic or aldehydic substitution product of a polyhydroxy alcohol.
Monosaccharide
compounds that cannot be hydrolyzed to simple sugars.
Saccharides (Sugar)
Examples of Saccharides
Monosaccharides
Disaccharides
Trisaccharides
Tetrasaccharides
Oligosaccharides
Examples of Polysaccharides
Inulin
Starch
Cellulose
These sugars contain from 3 to 9 carbon atoms, but those with 5 and 6 carbon atoms ( Pentoses C5H10O5, Hexoses C6H12O6)
Monosaccharides
Examples of Disaccharides
Sucrose
Maltose
Lactose