Hongya Prickly Ash Oil

Hongya Prickly Ash Oil

Hongya Prickly Ash Oil is a protected geographical indication product.

　　The production area of Hongya Prickly Ash Oil covers the current administrative region of Hongya County, Sichuan Province.

　　I. Variety

　　Prickly Ash.

　　II. Growing Conditions

　　The production area is located at an altitude of 500 m to 1300 m, with soil depth ≥40 cm. The soil types are paddy soil and purple soil, pH value 5.5 to 6.5, organic matter content ≥1.5%.

　　III. Cultivation Management

　　1. Seedling Raising: Seeds are sown from late September to early October, with a seeding rate of 50 kg per 667 m² (mu), and transplanting density ≤30 plants.

　　2. Transplanting Time and Density: Transplanting takes place from late September to late November in autumn, with a planting density ≤1500 plants per hectare.

　　3. Fertilization: Mainly organic fertilizer is used, with each mature tree receiving ≥40 kg of organic fertilizer annually.

　　4. Harvesting: Manual harvesting takes place from June to July. Prickly ash fruits must have intact skins, a crisp green color, and full oil sacs.

　　5. Environmental and Safety Requirements: The use of pesticides, fertilizers, and other inputs must comply with national regulations, and environmental pollution must be avoided.

　　IV. Processing

　　1. Processing Workflow: Fruit → Cleaning → Oil Infusion → Separation → Filtration → Storage → Bottling → Finished Product.

　　2. Key Processing Points:

　　(1) Fruit: Fruit skins must be intact. Fruit must be processed within 24 hours of picking, and fallen fruit must not be used.

　　(2) Oil Infusion: Rapeseed oil is used for infusion, with a fruit-to-oil ratio of 1:(1.6 to 1.7), oil temperature of 210°C to 230°C, and infusion time of 10 to 15 minutes.

　　(3) Filtration: Filtration is done using a filter drum or plate-and-frame filter press, with a pore size ≤0.2 μm.

　　V. Quality Characteristics

　　1. Sensory Characteristics:

　　Item  Standard

　　Color  Light yellow with slight green

　　Aroma & Taste Distinct prickly ash flavor, smooth taste, rich numbing aroma, and long-lasting numbness.

　　Clarity  Clear and transparent

　　2. Physicochemical Indicators:

　　Item  Standard

　　Moisture and Volatile Matter/% ≤0.70

　　Insoluble impurities/% ≤0.10

　　Acid value (KOH)/(mg/g) ≤3.0

　　Peroxide value (mmol/kg) ≤6.0

　　3. Safety and other quality and technical requirements: The product's safety and other quality and technical requirements must comply with relevant national regulations.