Granules Size Distribution Analysis

Granules Size Distribution Analysis

CD BioGlyco can provide a variety of time-saving and highly repeatable starch granules size distribution analysis services according to customers' scientific research needs. We have confidence to be your essential research assistant in the field of glycobiology.


Starch is composed of two glucose polymers, namely amylose and amylopectin. Amylopectin with its multiple branched chains of (1-4)-R-glucans interlinked by (1-6)-R-linkages is usually the major component of starch, with the essentially unbranched amylose making up the minor fraction. Starch molecules (called starch granules) are usually deposited in plants in the form of discrete semi-crystalline aggregates, which are the most important energy reserve in plants.

During grain development, starch granules of different sizes and shapes accumulate in the endosperm. They are large, disc-shaped A particles, and small spherical B particles. The average diameter of A-type granules is 10 to 35 μm, and the diameter of B-type granules is less than 10 μm, accounting for more than 90% of the total number of starch granules. Large A-type and small B-type starch granules have different physical, chemical and functional properties. The size of starch granules directly affects the crystallization properties, digestion properties, modification results and thermodynamic properties of starch. Analysis of starch granules size is hence very important.

Fig 1. Granules from a sago starch. (Microscope 20×)Fig 1. Granules from a sago starch. (Microscope 20×)


CD BioGlyco mainly provides the following methods to detect the particle size distribution of starch. Different methods can be used alone or combined according to the sample's characteristics.

  • Digital image analysis (IA) coupled with light microscopy can be used to determine starch size distributions and record the physical parameters of a single particle.
  • Laser diffraction sizing (LDS) can greatly shorten the analysis time of each sample. The instrument is usually used to quickly analyze the particle size distribution of both wet and dry dispersions.
  • Focus beam reflectance measurement (FBRM) can be used as a real-time (on-line) monitoring tool for the determination of size and shape of the starch particles in a fast and efficient way.


  • Starch characteristics research
  • Flour product quality evaluation
  • Molecular structure and function research
  • Comparative study of different materials 

Advantages of Us

  • Numerous technology platforms to choose from
  • Short experiment period and accurate results
  • Customized service

CD BioGlyco provides a variety of different technology platforms for measuring starch granules size distribution, customers can choose one or more of these services according to their research needs. We have always been praised by customers for our high-quality services and accurate experimental results.

Customers can contact our employees directly and we will respond promptly. If you are interested in our services, please contact us for more detailed information.


  1. Tao, H.; et al. Particle size distribution of wheat starch granules in relation to baking properties of frozen dough. Carbohydrate Polymers. 2016, 137: 147-153.
This service is for Research Use Only, not intended for any clinical use.

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