[Zhongning, Ningxia, May 20, 2025] In Zhongning, Ningxia, known as the "Hometown of Chinese Wolfberries," Mr. Li from Mingrun Wolfberry Cooperative finally stopped worrying about the "second-rate goods" with uneven colors and mixed with oil particles in his warehouse this year.
"In the past, we relied on manual screening, which was inefficient, costly, and the standards were not uniform. For poor-quality goji berries, we had to sell them at least 5-8 yuan cheaper per jin, and we often faced price reductions," recalled Mr. Li. At the beginning of this year, after evaluating several equipment options, he introduced the "Zhen Cai" series of goji berry color sorters from Zhongde Photoelectric.
Challenges and Solutions:
The difficulty of wolfberry sorting lies in subtle color differences and complex flaws: oil particles (blackened) caused by improper drying, mold, and different-colored fruits such as green and yellow fruits, which are mixed with high-quality bright red wolfberries, seriously affecting the grade and medicinal value. Based on the characteristics of wolfberries, the Sino-German technical team has customized multiple sets of optical parameters:
High-definition backlight detection: Accurately identify oil particles and moldy fruits with different light transmittance, even if the defects are on the back side, it can be "seen through at a glance".
Double-sided imaging technology: Scanning the goji berries from both front and back to ensure no dead zones.
AI intelligent learning: The machine can learn autonomously and memorize the subtle color difference characteristics of different batches of goji berries. The more it is used, the "smarter" it becomes, and the more precise the sorting becomes.
Results and Data:
"Now, our premium-grade goji berry yield has increased by over 30%," said Mr. Li, pointing to the sorted finished products. "You see, there are almost no black or moldy fruits. With the improved quality, customers are eager to buy, and our wholesale price has increased by 15% overall. This Sino-German equipment can pay for itself in just one production season."
This is just a microcosm of the application of Sino-German color sorters in the field of intensive processing of specialty agricultural products. Currently, Sino-German equipment has been widely applied in various industries such as tea, nuts, chili peppers, and rice, earning a reputation as "experts in quality improvement and efficiency enhancement" with its stable performance and visible benefits.