Biological fermentation production line

Release Date:

2025-11-11 14:34

Source:

Algal polysaccharides are natural high-molecular-weight polymers, primarily derived from seaweeds such as kelp, hijiki (Sargassum fusiforme), laminaria, fucus, and bladderwrack.

Application areas:

Algal polysaccharides contain abundant hydroxyl groups, are highly soluble in water, and have broad applications in feed additives, functional foods, functional cosmetics, biomaterials, and the chemical industry. In the feed additive sector, algal polysaccharides can effectively enhance the survival rate and disease resistance of South American white shrimp. In the biopharmaceutical field, they exhibit antibacterial, antitumor, antiviral, and immune-modulating activities, making them suitable as active pharmaceutical ingredients for antiviral drugs.
In recent years, both domestic and international experts have devoted themselves to investigating the pharmacological and bioactive properties of algal polysaccharides, achieving substantial progress. China boasts abundant marine algal resources and a diverse array of bioactive compounds, which remain largely untapped for further development. Algal resources hold great potential across multiple sectors, including medicine, food, animal feed, chemical engineering, and cosmetics; leveraging algal polysaccharides as a foundational material, it is possible to produce large‑scale products of significant economic and practical value. Research on algal polysaccharides is poised to become one of the emerging focal points in scientific fields going forward.

Extraction Technology of Algal Polysaccharides

The primary technical challenges in the application development of algal polysaccharides are concentrated in the extraction processes. Currently, both domestically and internationally, the predominant extraction methods include hot-water extraction, mild-acid extraction, and mild-alkali extraction. These approaches feature straightforward procedures and relatively low equipment requirements; however, they suffer from low yields, long extraction times, and significant loss of bioactivity, thereby limiting the large-scale production of algal polysaccharides. In contrast, emerging techniques such as microwave-assisted extraction, ultrasonic-assisted extraction, and enzymatic hydrolysis offer advantages including higher extraction efficiency, lower energy consumption, and shorter processing cycles.
Regardless of the extraction method employed, it is essential to preserve the natural higher-order structure of algal polysaccharides. This is because the bioactivity of these polysaccharides is critically dependent on their unique native conformation, with sulfate groups playing a pivotal role. The core technical challenge in algal polysaccharide extraction lies in effectively safeguarding their inherent chemical architecture while minimizing or preventing the loss of sulfate groups. Only by addressing these key technical considerations can the high bioactivity and superior quality of algal polysaccharides be ensured.

Main process description of the polysaccharide extraction production line:

Polysaccharide products vary depending on the raw materials and production processes. Taking brown algae or kelp as an example, after preliminary processing—sorting, washing, and crushing—the material is fed into an extraction tank. The primary purpose of the extraction tank is to recover bioactive components such as proteins, polysaccharides, and other functional ingredients. Following extraction, a solid–liquid separator is used to separate the solids from the liquid extract. The resulting extract is then transferred to a storage tank, where it undergoes ultrafiltration to further isolate proteins and polysaccharides. Depending on the specific process requirements, additional purification steps may include alcohol precipitation in a precipitation tank or adsorption-based separation using resin columns. These steps are repeated multiple times to achieve the desired product purity. Once purified to meet quality specifications, the material proceeds to the concentration unit. Based on the intended packaging format, the concentrated product is either subjected to UHT sterilization before being sent to a spray‑drying tower or a liquid‑filling line, ultimately yielding either powdered or liquid polysaccharide products.

Description of the main process sections of the Guangzhou Maikeda polysaccharide extraction production line:

The raw-material preprocessing section, the polysaccharide extraction and dissolution section, the separation and purification section, the concentration, sterilization, and drying section, and the testing, filling, and packaging section—Guangzhou Maiko Bio’s fermentation production line is capable of producing finished products such as polysaccharides, oligosaccharides, and protein peptides.

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