Traditional Chinese Medicine (TCM) herbal slices, also known as Chinese Herbal Slices (CHS), are essential components of TCM. The preparation of these slices involves several meticulous steps to ensure their efficacy and quality. The general process includes:
Cleaning: Raw herbs are thoroughly cleaned to remove dirt and impurities.
Water Preparation: Herbs are soaked or moistened to soften them, making slicing easier.
Cutting: Herbs are sliced into thin pieces using specialized slicing devices.
Processing: Additional treatments such as steaming, roasting, or frying may be applied to enhance the herbs' medicinal properties.
Drying: Slices are dried to reduce moisture content, preventing mold and ensuring longevity.
Burdening and Sterilization: The final steps involve mixing the slices per specific formulations and sterilizing them to eliminate microbial contamination.
 

Technological Innovations in Processing and Preparation

The processing and preparation of TCM herbal slices have evolved significantly with technological advancements, ensuring higher potency and efficacy. Some key innovations include:
 

Advanced Slicing Devices

Modern slicing devices have been developed to enhance the efficiency and quality of herbal slices. For instance, the slicing device described in patent CN110171026A features a biopsy chamber, motor, transmission shaft, cutter, cylinder, piston rod, screen tray, and exhaust fan. This device allows for precise slicing, reducing labor intensity and improving the consistency and quality of the slices.
 

Flattening Mechanisms

Innovations like the traditional Chinese medicine slicing system with a flattening mechanism (patent CN112066646A) have been introduced to streamline the slicing process. This system includes a slicing machine, a flattening mechanism, and a feeding belt. It ensures uniform thickness and improved drying efficiency by evenly distributing the slices, thus enhancing the overall quality of the herbal slices.
 

Enhanced Drying Techniques

Drying is a critical step in the preparation of TCM herbal slices. Modern drying techniques, such as vacuum drying and freeze drying, have been adopted to preserve the active ingredients and prevent degradation. These methods maintain the medicinal properties of the herbs while extending their shelf life.
 

Automated Processing Systems

Automation has been integrated into the processing of TCM herbal slices to increase efficiency and reduce human error. Automated systems manage various stages, from cleaning and slicing to drying and packaging, ensuring consistent quality and reducing labor costs.