Zanthoxylum oil is a medicinal diet made of Sichuan zanthoxylum and edible oil. Zanthoxylum oil is a product from zanthoxylum extract scented substance in edible vegetable oil. The hemp taste is heavier, the pepper is rich, and the hemp degree is qualitative. Han Yuan pepper has a long history, and it is listed as a tribute in the Tang Dynasty, so it is named "tribute pepper". With its color red, heavy grain oil, rich aroma, alcohol hemp refreshing, authentic Han Yuan pepper, named Qingxi pepper.

Chinese name: Sichuan pepper oil

Foreign name :Pepper oil

Alias: Xanthoxylin, 2-hydroxy-4, 6-dimethoxyacetophenone, 2' -hydroxy-4 ',6' -dimethoxyacetophenone

Molecular formula: C10H12O4

Molecular weight: 196.20

CAS login number :90-24-4

EINECS entry number: 201-978-3

Density: 1.172± 0.06g /cm3(Predicted)

Melting point: 80-84°C(lit.)

Boiling point: 185°C/20mm

Flash point: 185°C/20mm

Vapor pressure: 1.57E-05mmHg at 25°C.

Refractive index: 1.527

Acidity coefficient: 9.41±0.15(Predicted)

Categories: Cooking Oil, Blended Oil

Taste: Fragrant, hemp

Refractive index (20℃) : 1.4710~1.4890

Relative density (20℃) : 0.9200~0.9400

Acid value :KOH/g≤ 4.0(Food Hygiene Standard for Fried Vegetable Oil)

Arsenic (As) :≤ 2ppm

Heavy metals (as Pb)≤ 1ppm

Instructions for use: Eat directly, add according to the flavor requirements of the product.

Storage: Store at room temperature away from light, the shelf life is generally 12 months, refrigerated storage is better.

Preparation process: Usually said Zanthoxylum oil and Zanthoxylum seed oil, zanthoxylum essential oil are completely different things. The oil extracted from Zanthoxum seed by pressing method or solvent extraction is called Zanthoxum seed oil, and then refined as edible zanthoxum seed oil. Zanthoxylum oil is extracted by organic solvent or supercritical extraction of zanthoxylum oil, generally can not be eaten directly, need to be diluted with edible vegetable oil in accordance with the appropriate proportion of zanthoxylum oil can be used as seasoning oil. Zanthoxylum oil is mainly prepared by the following methods:

1. Oil dissolution method, oil immersion method, oil leaching method: oil dissolution method, oil immersion method, oil leaching method is the traditional method of producing Zanthoxylum oil, which is used by the vast majority of domestic zanthoxylum oil plants. The practice is: pepper directly into the hot edible vegetable oil sealed, or pepper into the aperture less than the diameter of the container, the hot edible vegetable oil slowly drizzle into the container, fry out its fragrance, so that the effective ingredients dissolve into the oil, that is, pepper oil. The limitations of the above method are large, mainly because the oil temperature is not easy to grasp. If the temperature is too high, the fragrance and numbing ingredients in Sichuan pepper are volatile, decomposed and lost. If the oil temperature is too low, water is not easy to separate, easy to lead to oil rancidity, and the effective ingredients can not be fully dissolved, only part of the oil, resulting in waste and high product cost, lack of market competitiveness. Secondly, there are shortcomings such as low production efficiency, high labor intensity and poor health conditions.

2. Solvent extraction method: use petroleum ether with boiling point of 60-70℃ as solvent, repeatedly extract Zanthoxylum, obtain Zanthoxylum essential oil, and then heat and mix with edible vegetable oil as Zanthoxylum oil. This method also has defects, one is that the solvent residue problem leads to the product aroma is not pure. Second, the volatilization of the solvent in the heating process increases the cost of the product virtually, and causes a certain degree of pollution to the atmospheric environment.

3. Supercritical CO2 extraction method: Use liquid CO2 to extract the active ingredients in Zanthoxylum, that is, Zanthoxylum essential oil, and then with edible vegetable oil. This method is more advanced, and the quality of Zanthoxylum oil produced is better, but there are the following defects: First, in the picking season of Zanthoxylum, the daily amount of fresh Zanthoxylum treated by this method is limited. The temperature of the method is 35-40℃, the extraction time is long, and the daily processing capacity is not large, so the method is not suitable for the large-scale production of zanthoxylum flower harvest season. Second, when the method is used to extract fresh prickly ash, it is necessary to crush or press the prickly ash peel together with the prickly ash seed. Because the prickly ash seed contains high acid value and bitter taste, it is easy to increase the acid value of the product and change the flavor. Third, its production conditions and corresponding labor protection measures are strict, requiring expensive and specialized equipment, so the application of the method is limited.

4. Pressing method: divided into hot pressing method and improved cold pressing method. Hot pressing method can easily lead to the loss of a large number of aromatic and flavorful substances in Zanthoxanthus. At present, domestic manufacturers have used a patent technology similar to the physical cold pressing method to produce zanthoxylum oil.

The acid value, volatile matter and color of Zanthoxylum oil are different due to different origin, picking time and production technology.

Nutritional value: Prickly pepper taste, hot, spleen, stomach channel; It has the effect of aromatic stomach strengthening, warm middle dispelling cold, dehumidifying pain relief, insecticidal detoxification, relieving itch and solving fishy smell; It mainly treats vomiting, wind-cold dampness arthralgia, toothache and so on. According to Li Shizhen "Compendium of Materia Medica" recorded :" prickly ash teeth, dark hair, bright eyes, long service, good color, aging, increasing years, healthy god." "The Herbal classics" warned :" lung gastritis has fire, or cough sputum, or cough hemoptysis,... The law is forbidden." People with tuberculosis should also avoid food.

[Performance] Spicy, hot. It appetizes, warms, relieves pain and repels insects.

[Purpose] For spleen and stomach deficiency cold, loss of appetite, or abdominal cold pain, vomiting, diarrhea; Abdominal pain caused by roundworms.

[Usage] For flavoring, decocting, grinding, etc.

[Attention] Eating too much fire, consumption of gas, damage eyes.