Dual modification of various starches: Synthesis, properties and applications
1Department of Chemical Sciences, AdekunleAjasin University, Akungba-Akoko, Ondo State, Nigeria.
Food Chemistry
|November 6, 2020
Summary
Dual starch modification addresses limitations of native and single-modified starches. This approach, encompassing homogeneous and heterogeneous methods, enhances starch properties for diverse applications.
Area of Science:
- Food Science
- Materials Science
Background:
- Native starches (NSs) exhibit limitations.
- Single modified starches also present challenges.
- Dual modification offers a solution to overcome these issues.
Purpose of the Study:
- To justify the necessity of dual starch modification.
- To classify and discuss dually modified starches.
- To highlight the importance of reaction parameters.
Main Methods:
- Discussed homogeneous dual modification (e.g., extrusion/annealing, succinylation/cross-linking, enzyme combinations).
- Discussed heterogeneous dual modification (e.g., acetylation/annealing, extrusion/succinylation).
- Reviewed classification, synthesis, properties, and applications.
Main Results:
- Dual modification overcomes limitations of single modifications.
- Identified homogeneous and heterogeneous dual modification strategies.
- Emphasized the critical role of reaction order, conditions, medium, and botanical source.
Conclusions:
- Dual modification of starches is advantageous over single modifications.
- Various combinations of physical, chemical, and enzymatic treatments yield dually modified starches.
- Optimizing reaction parameters is crucial for successful dual modification.
Related Concept Videos
Biosynthesis of Polysaccharides
323
Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
323
Chemistry of Carbohydrates
86.5K
Carbohydrates are an essential part of the diet in humans and animals. Grains, fruits, and vegetables are natural sources of carbohydrates that provide energy to the body, particularly through glucose, a simple sugar that is a component of starch and an ingredient in many staple foods. The stoichiometric formula (CH2O)n, where n is the number of carbons in the molecule represents carbohydrates. In other words, the ratio of carbon to hydrogen to oxygen is 1:2:1 in carbohydrate molecules. This...
86.5K
Introduction to Carbohydrates
18.8K
Carbohydrates, proteins, and fats are the primary macronutrients in the human diet. However, carbohydrates are the most favored source of energy in the body. They can be found in a wide variety of foods, including whole grains, fruit, and vegetables, in various forms, such as sugars, starch, and dietary fiber. Based on their structure, carbohydrates are classified into three main classes— monosaccharides, disaccharides, and polysaccharides. The body's cells can only utilize simple...
18.8K
Dehydration Synthesis
147.2K
Overview
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...
147.2K
Sugars as Energy Storage Molecules
9.4K
Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
9.4K
Hydrolysis
119.8K
Overview
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
119.8K


