Amylose tester for high-throughput detection:Breed research instruments and equipment

In the field of grain processing and food manufacturing, amylose content is a key indicator determining the quality of cereals, directly affecting:

Rice palatability: high-quality round-grained rice with an amylose content of 18-22%

Food processing characteristics: High-amylose starch (>25%) is suitable for making products such as rice noodles

Storage stability: The proportion of amylose affects the rate of grain aging

The traditional iodometric colorimetric method faces three major challenges:

Cumbersome operation: Iodine reagent needs to be prepared, and a single test takes 2 hours

Human error: Visual color comparison is highly subjective (error ±3%)

Data lag: unable to guide real-time production adjustments

The amylose tester, utilizing automatic sampling technology and photoelectric detection technology, achieves rapid detection in 20 seconds with a detection accuracy of ±1%, providing a new means of quality control for the grain industry.

I. Operating Principle and System Design of Amylose Tester

1.1 Detection principle

Based on the color development difference between amylose/amylopectin and iodine:

Amylose: forms a deep blue complex with iodine

Amylopectin: forms a reddish-brown complex

The instrument synchronously measures through a four-wavelength optical system:

470nm: reference wavelength (to eliminate background interference)

620nm: characteristic absorption of amylose

540nm: characteristic absorption of amylopectin

680nm: Total starch correction

1.2 Instrument architecture

Sample injection system: peristaltic pump flow detection throughput of 30 samples/hour

Optical system: LED cold light source + silicon photodiode, with a transmittance repeatability of ≤0.3%

Electronic system: ARM Cortex-A53 processor completes data analysis in 20 seconds

Data management: Android 7.1 system supports wireless/USB flash drive export

II. Technical Advantages of Amylose Tester 

1. Performance testing

Detection range: 0-50%

Detection accuracy: ±1%

Detection time: 20 seconds per sample

Four-wavelength synchronous detection

2. Degree of automation

Continuous flow injection (no limit on sample quantity)

Automatic optical alignment

Automatic data storage and analysis

One-click operation

3. Intelligent functions

7-inch touch screen (Android system)

WiFi data upload

Cloud data management

Export data from USB flash drive

4. Stability performance

Automatic light intensity adjustment (no temperature drift)

Long-term drift <1%FS (24h)

Transmittance repeatability ≤ 0.3%T

III. Industry Application Scenarios and Solutions

1. Main application areas

Grain processing: raw material quality control

Food production: Recipe optimization

Breeding research: variety quality evaluation

Quality inspection: third-party inspection agency

Warehouse management: storage quality monitoring

2. Typical problems and solutions

Low detection efficiency: 20-second quick detection

Complex operation: one-click automated operation

Data management is challenging: cloud-based data management platform

Unstable results: Four-wavelength calibration technique

Multiple sample restrictions: continuous flow sample feeding design

As an innovative achievement in grain testing technology, the amylose tester plays a significant role in starch quality testing due to its speed, accuracy, and automation. Choosing a reliable amylose tester can not only significantly enhance testing efficiency and reduce labor costs, but also provide accurate data support for product development and quality control.