Maize Starch Analysis Service

Precision Analysis, Quality Assurance for Maize Starch

Maize starch is a white or off-white powder, due to its biological activity, is often used as an excipient in pharmaceutical delivery systems, such as those for the nasal mucosa, the oral cavity, and the periodontium. Currently, maize starch is used in a wide range of food, textile, pharmaceutical, and industrial applications. At CD BioGlyco, we have the world's leading expertise in Pharmaceutical Excipient Analysis and offer a custom one-to-one maize starch analysis service to meet clients' research needs.

Identification
Under the microscope, the particles of maize starch are single and appear round or oval, with diameters ranging from 2 to 35 μm. Meanwhile, when the maize starch particles are observed under a polarised microscope, there is a polarised cross phenomenon, and the cross is located at the umbilical point of the particles.
The aqueous solution of maize starch appears as a whitish translucent gel-like substance after heating-cooling.
pH
Measuring the pH of maize starch using a pH meter is an efficient method. Maize starch is an acidic substance that has a pH value between 4.5 and 7.0.
Loss on drying
The maize starch samples to be tested are dried at above 100°C. The loss on drying must not exceed 14.0%.
Scorch residue
The residue of maize starch must not exceed 0.6% after burning.
Heavy metal assay
We use elemental analysis to detect the presence of heavy metals in maize starch.
Iron salt assay
Firstly, maize starch is dissolved. Next, dilute hydrochloric acid, ammonium persulfate, and other substances are added to it and the color change is observed. Finally, the color of the solution is compared with that of a standard iron solution (ammonium iron sulfate solution). If the colors are the same or similar, it is proved that the maize starch contains iron salts.
Sulfur dioxide assay
We use the acid-base titration method to detect sulfur dioxide in maize starch. In this, we use sodium hydroxide solution as titrant and methyl red ethanol solution as indicator.
Detection of oxidizing substances
After adding starch indicator to the maize starch solution, titrate using sodium thiosulfate solution. When the blue color of the solution disappears, the titration is stopped. The amount of oxidized substances is calculated from the amount of titrant used.
Microbiological limits
We offer microbiological enumeration methods and controlled bacterial examination methods to detect the amount of bacteria and fungi in maize starch. The total number of aerobic bacteria per 1 g of maize starch should not exceed 10³ cfu, and the number of molds and yeasts should not exceed 10² cfu. In addition, Escherichia coli should not be present in maize starch.

Our analysis solutions for maize starch. (CD BioGlyco)

Publication Data

Technology: Scanning electron microscope (SEM), Infrared spectrum (IR)

Journal: Frontiers in Plant Science

IF: 5.6

Published: 2022

Results: In this article, the authors investigated the effect of fermentation of Qu (FQ) on maize starch at different times and determined the physicochemical properties and structural parameters of maize starch using SEM, IR, and other techniques. The experimental results showed that in maize starch, resistant starch (RS), content of straight chain starch (AC), average particle size, and onset of pasting temperature (To) were significantly increased after 36 h of FQ treatment. On the contrary, crystallinity, peak viscosity (PV), breakdown (BD), enthalpy of pasting (ΔH), and temperature range of phase transition (ΔT) decreased significantly after 36 h. The results of the study showed that the temperature range of phase transition (ΔT) was significantly lower than that of the FQ. Notably, the maize starch particles became smaller at 36 h, with wrinkles on the surface, and the particle size distribution changed from 1-spike to bimodal. The authors suggested that the formation of smaller rearranged starch granules is the main reason for the significant increase in RS during the FQ process.

Fig.1 Particle shape of maize starch under scanning electron microscope. Fig.1 Morphology of maize starch granules after different time treatments. (Wu, et al., 2022)

Applications

Comprehensive analysis of maize starch helps to ensure the quality of food additives.
A comprehensive analysis of maize starch can be used to assess the effects of diabetic-specific sweeteners on the human body.
Maize starch is often used as an additive in the papermaking process, so analysis of maize starch helps to ensure the quality of paper production.

Advantages

We have a powerful Pharmaceutical and Biological Analysis platform, that supports the comprehensive analysis of maize starch, such as content, acidity, alkalinity, stability, and so on.
We provide our clients with professional and detailed data interpretation of maize starch analysis reports helping them better apply maize starch.
We have extensive experience and expertise in the starch industry and provide comprehensive maize starch analysis support to our clients.

CD BioGlyco has rich experience in the field of pharmaceutical excipient analysis. Relying on advanced technologies and a professional research team, we provide efficient, high-quality, and reliable maize starch analysis services to every client. Please feel free to contact us for your maize starch analysis needs.

Reference

Wu, W.; et al. The effects of fermentation of Qu on the digestibility and structure of waxy maize starch. Front. Plant Sci. 2022, 13: 984795.

This service is for Research Use Only, not intended for any clinical use.