The application of Ultrasonic assisted Extraction (UAE) technology in the extraction of gingerol has significant advantages, and its selling points are mainly reflected in the following aspects:
1. Efficient and energy-saving, reducing extraction time
Time efficiency: Compared with traditional solvent extraction or heating reflux methods, UAE can shorten the extraction time to 15-30 minutes, while conventional methods require 2-4 hours.
Energy consumption reduction: The cavitation effect of ultrasound accelerates solvent penetration and cell wall rupture, reducing energy consumption.
2. Improve extraction rate and retention of active ingredients
Improved yield of gingerol: By optimizing parameters such as ethanol concentration of 70%, solid-liquid ratio of 1:15, and ultrasound power of 120 W, the extraction rate can reach 1.46%, and the gingerol content can reach 20.14-25.36%.
Biological activity retention: Low temperature extraction reduces the degradation of thermosensitive components (such as gingerol and gingerone), while retaining antioxidant and anti-inflammatory activities.
3. Environmental Protection and Economy
Reduce solvent usage: UAE reduces the amount of organic solvents (such as ethyl acetate and ethanol) by 30-50%, reducing the cost of waste liquid treatment.
Process cost optimization: Low equipment investment and can be integrated into existing production lines, suitable for industrial scaling up

Experimental method:
Wash and slice fresh ginger, dry at 60 ℃. Weighed and crushed 10g of ginger powder with 18 mesh sieve is added to a 250mL triangular flask
Extract 100mL ethanol solution by ultrasonic oscillation and centrifuge for 15 minutes. take Determination of gingerol content and extraction rate in the supernatant.
By changing the solvent type, ethanol concentration, solid-liquid ratio, and ultrasonic waves Exploring ultrasonic technology based on extraction time, ginger pretreatment methods, etc

T he optimum extraction conditions for gingerol were identified as the follows：the particle size as60screen mesh‚60％ ethanol（V／V） as solvent‚ratio of material to liquid as1∶12．5（W／V）‚extraction time15min with only one time after drying less than60℃ of fresh ginger．T he extraction ratio of gingerol was up to

3．03％‚which was about 88．54％ that of ethanol refluence extraction for 6h．All these results indicate that ultrasonic wave extraction is a rapid method with a good selectivity and handle expediently．

Ultrasound assisted extraction has been studied for the extraction of other substances such as cyanidin-3-galactoside, proteins, paclitaxel, and polysaccharides. For example, anthocyanin galactoside was extracted from pear peel, krill protein was extracted using ultrasound assisted alkaline electrolyzed water, and paclitaxel was extracted using ionic liquids. However, the relevant applications of curcumin were not explicitly mentioned.

The application fields of ultrasound assisted extraction of curcumin usually include the food industry (such as natural seasonings, functional food additives), medicine and health (such as anti-inflammatory, antioxidant drugs or health product raw materials), cosmetics (ingredients with soothing and antioxidant effects), etc. This technology has potential application value in the industrial production of active ingredients in natural products by improving extraction efficiency, shortening extraction time, and reducing solvent usage

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