Spirulina cultivation method

Spirulina is one of the oldest photosynthetic and autotrophic microalgae, named for its spiral shape when viewed under a microscope. This ancient marine organism thrives in high-temperature (25°C to 30°C) and high-alkaline (pH 8 to 11) environments. Not only is it considered one of the most nutrient-dense, comprehensive, and balanced foods on Earth, but it's also known as a true nutritional champion. With high light efficiency, strong adaptability, a short growth cycle, rapid reproduction, and high yield, Spirulina is ideal for artificial cultivation. To successfully breed Spirulina, several key conditions must be met: adequate light, suitable temperature, a well-balanced culture medium, and proper ventilation. Factors such as pH, water depth, flow rate, oxygen levels, and the availability of essential nutrients all play critical roles in production. Therefore, the culture tank should be located in an area with clean water, sufficient sunlight, and ample space. The ideal pH range is between 7 and 11, preferably 8 to 9, while the water depth should be around 0.2 to 0.3 meters. The optimal temperature is between 18°C and 38°C, with 26°C to 32°C being the most favorable range. Currently, the primary species cultivated both domestically and internationally are *Spirulina platensis*, originally from Lake Chad in Africa, and *Spirulina maxima*, native to Mexico. Chinese researchers discovered a naturally occurring variant strain, *Spirulina platensis* strain 6 (S6), which adapts well to temperate climates along the coast of Huangpi County in Hebei Province. Another strain, *Spirulina platensis* strain 1 (S1), was introduced from Chad into China. Additionally, strains like ST-6 and Spirulina salt have been developed locally. These varieties can be selected based on regional conditions. Among them, *Spirulina sinensis* is particularly suited for high-temperature, saline, and seawater environments. There are several methods for cultivating Spirulina: 1. **Home farming**: Individuals can purchase specialized spirulina culture kits or use white enamel basins or cylindrical bowls—aluminum containers should be avoided. The scale of cultivation depends on annual usage. 2. **Easy breeding**: This method involves simple setups, such as constructing a small pool that doesn't leak. The pool should be about 30 cm deep, and the larger the area, the better. 3. **Natural lake farming**: Since Spirulina naturally occurs in salty lakes, using natural bodies of water is one of the most cost-effective methods. However, not all lakes are suitable due to specific requirements for light, temperature, and pH. Careful selection through experiments is necessary. 4. **Factory culture**: This involves advanced equipment and strict protocols. Raceway-shaped cement pools are commonly used, with each unit covering approximately 15,000 square meters. Open or closed systems can be employed. Open systems mimic natural conditions, while closed bioreactors use either natural or artificial light. The nutrient requirements for Spirulina include nitrogen, phosphorus, potassium, and a significant amount of carbon dioxide (CO₂). A typical nutrient mix includes baking soda, salt, potassium sulfate, magnesium sulfate, sodium nitrate, calcium chloride, and iron sulfite. The production process typically follows these steps: algae cultivation pond (original strain) → first-level culture → second-level culture → production pond → harvesting → rinsing → dehydration → spray drying → sterilization → inspection → packaging → storage. Depending on the intended use, the final product can be classified as pharmaceutical grade, food grade, or feed grade. Controlling predators is crucial in Spirulina farming. Contaminating organisms, such as large rotifers, can rapidly multiply and harm the algae by consuming cells or releasing toxic substances. Preventive measures are essential to maintain the dominance of Spirulina. Filtration can help remove larger predators, while chemical treatments and environmental adjustments can suppress harmful organisms. Regular monitoring and prompt action are vital to ensure a healthy culture.

Diacetate

Food Grade Diacetate,Food Grade Sodium Diacetate,Sodium Diacetate,Sodium Diacetate C4H7Nao4

Wuxi Yangshan Biochemical Co.,Ltd. , https://www.yangshanchem.com