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Initially developed for the food industry, the ultrasonic extraction machine is now widely used in multiple sectors, including microbiology, molecular biology, forensic science, pharmacy, botany, veterinary pharmacy, bacteriology, and cytology. Different models and types of ultrasonic extractors are available for specialized purposes.
100W-600W Bench-top machines:
A laboratory version of the ultrasonic extraction machine, ideal for low-volume production. The ultrasonic extraction principle remains the same in bench-top models. However, machines with lower or more powerful frequencies are better for specific types of material. The lower the frequency, the better the machine will be for tougher materials like roots and necks. The higher the frequency will suit more fragile and delicate materials like leaves and flowers. Power levels vary between the machines.
Small Scale/Continuous Flow:
Small-scale or continuous-flow ultrasonic extractor machines are suitable for small items like tea or fruit and citrus peels. Liquid can flow through the machine with the liquid, and to some extent, the temperature can be controlled, enabling items like tea to be extracted at high speeds. Newer small-scale machines have a feet ultrasonic probe that can fit easily into tanks and other places to do spot extraction rather than doing spot extraction.
amber1k-25k ultrasonic extraction:
These machines are suitable for a single batch. They can be made from stainless steel or glass, and the extraction occurs in a single place from a single material.
amber ultrasonic continuous flow extraction:
Machine used for large-scale extractions. In some cases, over 10,000 units can be produced per hour. However, the country of origin and supply chain must be verified, as in many cases, it is not possible to satisfy the supply chain with continuous-flow extraction in this manner. In some cases, continuous flow means that items like coffee can be extracted every 2-5 seconds so that a long and continuous line of extraction can be utilized for rapid production at a much lower cost than other methods. Machines can be made of stainless steel or glass and sometimes have a pressure of up to 60 bars within the extraction line.
Processing capacity
It describes the amount or volume of material that the ultrasonic extraction machine can process in a given time frame. This is usually represented in liters or gallons per hour.
Ultrasonic Power
This refers to the amount of power (in watts) generated by the ultrasonic extraction machine. Higher ultrasonic power can improve the efficiency of extraction.
Frequency
Ultrasonic extraction machines usually work at certain frequencies. This is often expressed in kilohertz (kHz) or megahertz (MHz). Different frequencies can affect the extraction efficiency and quality.
Extraction solvents
Ultrasonic extraction machines can use different extraction solvents, such as water, ethanol, acetone, etc. The choice of solvent affects the nature and efficiency of the extraction.
Temperature control
Some ultrasonic extraction machines offer temperature control to keep or adjust the extraction process's temperature. This may be expressed as a temperature range (e.g., 0°C to 100°C) or a specific temperature.
Equipment Size
This includes the overall dimensions (length, width, and height) and weight of the ultrasonic extraction machine. These sizes may be required to ensure that the equipment fits a specified spatial environment.
To ensure the normal operation and extraction effect of the ultrasonic extraction machine, it needs to be regularly maintained. The following are some routine maintenance tips for ultrasonic extraction machines:
Clean the extraction tank:
Regularly clean the extraction tank of the equipment to avoid residual extraction solvents or material residues that can cause pollution or flavor changes to the extract.
Check the power supply:
Regularly check the power supply for ultrasonic extraction machines to ensure stable power supply voltage and avoid damage to equipment due to power supply fluctuations.
Lubrication of the machine:
Appropriately lubricate the transmission components and bearings of the equipment to ensure its smooth operation and reduce wear.
Check the ultrasonic transducer:
Periodically check the ultrasonic transducer of the extraction machine. Ensure that the device works well and to avoid affecting the extraction efficiency and quality.
Calibrate parameters:
Regularly calibrate the parameters, such as ultrasonic power, extraction time, temperature, etc., to ensure that the equipment is in the optimal extraction state.
Dust removal and cleaning:
Keep the inside and outside of the equipment clean, regularly remove dust, and clean the air inlet and outlet to avoid overheating and ensure good heat dissipation for the equipment.
Maintain the extraction solvent system:
If the ultrasonic extraction machine is equipped with an extraction solvent circulation system, regularly check and maintain the solvent circulation pump and pipeline to ensure the stability and hygiene of the solvent circulation.
The food industry uses ultrasonic extraction machines in various ways. For instance, they use them to extract important components from plants and animals, including polyphenols, flavonoids, carotenoids, and essential oils, among others. Also, the machines can be used to extract bioactive compounds and phytochemicals from medicinal herbs and plants. These include ginseng, ginger, turmeric, green tea, and others. Manufacturers then use the extracted compounds as nutritional supplements, functional food additives, or flavoring agents.
Food and beverage companies can use ultrasonic extraction machines to extract flavors and fragrances from fruits, spices, coffee beans, and tea leaves. These flavors and fragrances are added to processed food and beverages to improve taste.
The machines help improve the extraction of valuable components from animal tissues, such as fish, meat, and dairy products. The extracted compounds are then used in the production of food additives, protein hydrolysates, and flavor enhancers.
Cosmetic companies can also use ultrasonic extraction machines to extract active ingredients such as vitamins, antioxidants, and essential oils from plant extracts. The extracts are used in skin care products, serums, moisturizers, and hair care products, among others.
Pharmaceutical manufacturers can use ultrasonic extraction machines to extract active compounds from herbs and medicinal plants. The extracted compounds become herbal medicines or pharmaceutical ingredients.
Another application of ultrasonic extraction machines is the extraction of polyphenols from fruits, vegetables, and grains. Polyphenols have antioxidant properties and are valued for their health benefits.
Ultrasonic extraction machines can be used to extract essences and essential oils from aromatic plants and herbs. The aromatic oils are then used in aromatherapy, perfumery, and personal care products.
Moreover, manufacturers of natural products can use ultrasonic extraction machines to extract bioactive compounds from sources like marine algae, fungi, and microbial cultures. Such compounds may have antibiotic properties or antimicrobial activity.
Additionally, ultrasonic extraction machines can be used to extract nutraceuticals, such as omega-3 fatty acids from fish oil or plant oils. The machines can also be used in the extraction of polyunsaturated fatty acids and carotenoids from algae and seed oils, respectively.
Finally, ultrasonic extraction machines are useful in testing laboratories. The machines are used to extract targeted compounds from environmental samples, food matrices, or biological samples for analysis and testing. Some of the targeted compounds include pesticides, heavy metals, and contaminants.
When choosing an ultrasonic extraction machine for sale, buyers should look at various models and check their key specifications to ensure the machines will be well received by customers. They should pay attention to the following key features and parameters of the machines:
Frequency range
Typically, ultrasonic extraction machines operate within a certain frequency range. The frequency generates cavitation effects in the solvent, which facilitates the extraction of target compounds from materials. Different extraction applications may require specific frequency ranges. For example, a frequency range of 20-25 kHz may be suitable for extracting essential oils from plant materials, while a frequency of 40 kHz may be used for extracting bioactive compounds from botanical extracts.
Power output
Power output refers to the ultrasonic extraction machine's energy output level. It is usually measured in watts (W). Higher power output improves extraction efficiency and yields but can also increase the risk of damaging sensitive materials. For example, a power output of 250 watts is suitable for small-scale extraction processes in laboratories. On the other hand, power outputs of 500 watts, 1000 watts, or more are suitable for commercial-scale extraction.
Extraction temperature
The extraction temperature affects the stability of the compounds to be extracted and the extraction efficiency. The ultrasound extraction machine should have adjustable extraction temperatures to optimize the extraction process for different materials and target compounds. For example, a machine with temperature control from ambient temperature to 70 °C allows users to extract polyphenols from plants and flavonoid compounds at non-degradable temperatures.
Size and capacity
When choosing the size and capacity of the ultrasonic extraction equipment, buyers should consider their business model and target market. For example, small benchtop machines with a processing capacity of 1-5 liters per batch are suitable for small-scale, frequent extraction. In contrast, large industrial-scale configurations with a capacity of up to 500 liters are ideal for large-scale continuous production.
Ultrasonic extraction vessel
The extraction vessel's material, size, and design affect the extraction process's efficiency, yield, and quality. When choosing extraction vessels, buyers should consider the type of material and the extraction method to meet customer needs. For example, a stainless steel vessel with a capacity of 10 liters and a closure system designed for solid-liquid extraction is suitable for extracting active compounds from herbs to produce dietary supplements.
Q1: Which plants can be used with an ultrasonic extractor?
A1: Almost all plant materials can be used for extraction with ultrasonic machines. Flowers, roots, leaves, seeds, and fruits all have valuable compounds that can be extracted using ultrasound. Some common plants include ginseng, ginger, garlic, bilberry, and green tea.
Q2: How secure is an ultrasonic extraction machine?
A2: Ultrasonic extraction machines are very safe and user-friendly. They have a security lock to start with, which prevents accidental startup. Moreover, the machines have pressure gauges and sensors to monitor the pressure levels closely. Ultrasonic extraction machines are made of materials that resist corrosion.
Q3: What are the different types of ultrasonic extraction machines?
A3: There are two main categories of ultrasound extraction machines: the batch processing and continuous flow model. The batch processing model extracts a specific amount and then shuts down. It is suitable for materials with less volume but high extraction rates. The continuous flow model is great for large volumes of material but with a lower extraction rate.
Q4: Can an ultrasonic extractor be used for any solvent?
A4: An advantage of ultrasonic extraction is that many solvents can be used. However, the extraction efficiency will differ depending on the solvent used. Commonly used solvents are water, ethanol, methanol, acetone, and hexane.
