Table 1 Advantages and disadvantages of common polysaccharide extraction methods
Polysaccharides extraction methods | Advantages | Disadvantages |
|---|---|---|
Hot extraction | Easy to operate, simple process and economic | High temperature, long time, low extraction rate and large energy consumption |
Acid extraction | High extraction efficiency and easy to operation | Corrode the container, low purity and polysaccharides degradation |
Alkali solution extraction | High extraction efficiency and easy to operation | Environment pollution, high reagent consumption and low purity |
Ultrasonic extraction | High extraction rate, low energy consumption, short extraction time | Ultrasonic instruments are needed and low efficiency of large-scale extraction |
enzyme extraction | Mild conditions, convenient operation, environmental protection and high extraction rate | Specific enzymes are needed and the influencing factors are complex |
Microwave-assisted extraction | Low consumption of energy and solvent, high selectivity and yield of target components | High equipment requirements and a specific extractant is required |