Rice Freshness Tester: A Scientific Tool for Grain Quality Control

In the field of grain storage and processing, the freshness of rice is a key indicator that determines its edible quality, processing suitability, and market value. Aging rice not only deteriorates in taste, but also may breed harmful substances, directly threatening food safety. Traditional sensory evaluation methods have strong subjectivity and large errors, making it difficult to meet the urgent needs of modern grain industry for precision and standardized management. Therefore, the rice freshness tester has emerged as an important technological tool to safeguard the quality of grain.

Principles of Science: Insight into Freshness from the Essence of Chemistry

The aging process of rice is accompanied by an increase in lipase activity, which promotes the breakdown of fat to produce free fatty acids, which are further oxidized to produce volatile substances such as aldehydes and ketones. The accumulation of these substances is significantly negatively correlated with the freshness of rice. The rice freshness tester is designed strictly according to the standard LS/T 6118-2017 "Determination and Discrimination of Rice Freshness in Grain and Oil Inspection". Its core technology lies in:

Sample preparation: Grind the tested rice grains into third grade rice that meets the standard.

Specific reaction: The rice sample is added with a specialized freshness testing agent and undergoes a color reaction with aldehydes and ketones produced during the aging process.

Accurate detection: Using a precision optical system to analyze the degree of color change in the mixed solution after the reaction (usually reflected as absorbance values).

Quantitative output: The built-in algorithm of the instrument converts optical signals into intuitive "freshness values" (FD values), ranging from 0-100 points, with higher scores indicating fresherness.

Core technological advantages: integration of efficiency, accuracy, and intelligence

The modern rice freshness tester (such as the product of Shandong Hengmei Electronic Technology Co., Ltd.) integrates multiple innovative technologies:

High throughput detection: equipped with 12 independent detection channels, capable of processing 12 samples simultaneously, with a detection time of ≥ 1 minute/batch, significantly improving efficiency.

Precision optical system: Using a precision rotation detection device to ensure the consistency and stability of the light source, the FD value repeatability error is ≤± 2 points, and the results are objective and reliable.

Intelligent operating system: equipped with Android intelligent system (version 7.1), 10 inch touch screen LCD display, intuitive and convenient operation, and excellent interactive experience.

Efficient data management: supports Wi Fi, Bluetooth wireless transmission, and USB copying; Configure a data platform to achieve long-term storage, traceability, and analysis of detection results, and assist in quality management decision-making.

Convenient output: Equipped with a new thermal printer, the results are automatically printed; The data can also be automatically saved and uploaded to the computer.

Environmentally friendly design: After testing, the waste liquid meets environmental requirements and can be directly discharged into the sewer.

Application scenarios and solutions

Grain Reserve Warehouse (Pain Point: Rotation Decision and Quality Monitoring): Accurately measure the freshness of incoming, in storage, and outgoing rice grains, scientifically guide rotation plans, avoid the accumulation and depreciation of aged grains, and ensure the quality of reserve grains. Case: After the introduction of this instrument in a large grain depot in East China, it achieved regular freshness screening of 100000 tons of rice, timely detection and processing of critical aged grain batches, and recovered potential economic losses of over one million yuan.

Rice processing enterprises (pain points: raw material grading and product pricing): quickly screen high-tech fresh rice for the production of high-end rice and preserved rice; Classify and process raw materials, optimize product structure, and enhance brand premium ability.

Grain quality supervision and inspection institutions (pain points: arbitration inspection and market supervision): provide objective and authoritative freshness testing basis for rice trade disputes, regulate market order, and ensure fair trade.

Breeding and research institutions (pain point: evaluation of variety storage tolerance): Objectively quantify the rate of freshness change of different rice varieties during storage, and screen for varieties with excellent storage tolerance.

Conclusion

The rice freshness tester transforms complex biochemical processes into objective, accurate, and efficient digital detection, and is an essential tool for achieving scientific and refined management of the grain industry chain. It solves the pain points of subjectivity and low efficiency in traditional methods, providing strong technical support for grain storage, processing, trade, quality inspection and other links.

Shandong Hengmei Electronic Technology Co., Ltd. is deeply involved in the field of intelligent detection instruments. Its research and development of rice freshness measuring instruments strictly follow the LS/T 6118-2017 standard, integrating high flux, high precision, intelligence, and convenience. With its reliable performance and efficient workflow, this instrument has become the trusted choice of many grain depots, processing enterprises, and quality inspection centers, continuously contributing to the guarantee of national food quality and safety and the enhancement of industrial value. Choosing a professional rice freshness tester means choosing to use technology to safeguard the freshness and value of every grain of rice.