There is some misinformation regarding dextrose, corn syrup, maltodextrin here.
What is dextrose?
Dextrose is the commercial name used for the crystalline glucose produced from starch. If the crystallized dextrose (glucose) contains no water, it is listed as "dextrose anhydrous" or "anhydrous dextrose" in an ingredient statement. If the crystallized dextrose contains one molecule of water, it will be listed as "dextrose" or "dextrose monohydrate" in an ingredient statement. The majority of the dextrose listed in food ingredient statements began as cornstarch.
Food manufacturers may list dextrose produced from cornstarch as "corn sugar" in an ingredient statement. If the dextrose comes from another source like rice or wheat, the ingredient list would read "rice sugar" or "wheat sugar," respectively.
Dextrose is used in many baking products like cake mixes and frostings, snack foods like cookies, crackers and pretzels, and desserts like custards and sherbets. Dextrose is also used as a filler in the single-serve, table-top packets of the common artificial sweeteners
What is corn syrup?
The singular term "corn syrup" is somewhat of a misnomer because it is used to identify a group of sweeteners that differ from one another simply by the amount of dextrose (glucose) present in the commercial syrup. Since only a single type of corn syrup is generally used in a food product, the term "corn syrup" is permitted in an ingredient statement. However, consumers have no idea how much glucose is contained in the particular "corn syrup" listed in an ingredient statement. A commercial "corn syrup" may contain between 20% and 98% dextrose (glucose).
"Corn syrup" may also be called "glucose syrup" in an ingredient list.
Corn syrups are used in many of today's salad dressings, tomato sauces, powdered drink mixes, fruit drinks and juices, and frozen desserts like pudding and ice milk.
What are corn syrup solids?
When a corn syrup has been concentrated to contain less than 10% water, it can be listed as "corn syrup solids" in an ingredient statement. To qualify as "corn syrup solids," the glucose (dextrose) content must be at least 88% of the weight of the concentrated syrup. This product can be called "dried glucose syrup" or "glucose syrup solids" in an ingredient list.
Corn syrup solids are used in the same types of foods as dextrose and corn syrups.
What is maltodextrin?
A maltodextrin is a short chain of molecularly linked dextrose (glucose) molecules, and is manufactured by regulating the hydrolysis of starch. Typical commercial maltodextrins contain as few as three and as many as nineteen linked dextrose units.
While the singular term "maltodextrin" is permitted in an ingredient statement, the term "maltodextrin" can be applied to any starch hydrolysis product that contains fewer than 20 dextrose (glucose) units linked together. This means that the term "maltodextrin" stands for a family of products, not a single distinct ingredient.
Additionally, today's commercially important maltodextrin products are produced from corn, potato or rice. Unlike the other starch sweeteners, the undefined term "maltodextrin" can be used in an ingredient list no matter the original source of starch.
Maltodextrins are used in a wide array of foods, from canned fruits to snacks. Maltodextrins may also be an ingredient in the single-serve, table-top packet of some artificial sweeteners.