The history and culture of walnut oil can be traced back to ancient times. According to historical records, as early as the 3rd century BC, when Zhang Qian went to the Western Regions, he brought back walnut seeds and tried to plant them in Chang'an. However, because the climate in Guanzhong is not suitable for the growth and development of walnuts, walnuts were "distributed" to Shangluo Mountain. In Shangluo Mountain, walnuts have been able to take root and multiply, and they will continue to grow. Shangluo is located at the southern foot of the eastern section of the Qinling Mountains, which belongs to the transition zone from the first zone to the warm temperate zone, and has unique natural and geographical advantages for the development of walnuts. In the Tang Dynasty, the popularity of Shangluo walnuts was already very high, and it was recorded in the Northern Song Dynasty's "Materia Medica": "Walnuts are windy, and there are many between Shaanxi and Luo." Li Shizhen of the Ming Dynasty also wrote in the "Compendium of Materia Medica", saying that walnuts have "black hair, solid essence, dry treatment, and blood regulation". Wang Shixiong of the Qing Dynasty recorded in his book "Diet Recipe for Living with Rest" that walnuts have the effects of strengthening the brain, prolonging life, and moisturizing the skin.
In modern times, the extraction process of walnut oil has been continuously improved, and the essence of walnuts has been retained. In the international market, walnut oil is known as the "olive oil of the East" and is favored by consumers. In the domestic market, with the improvement of the quality of life and consumers' pursuit of healthy diet, walnut oil has gradually become a popular product in the high-end edible oil market.
The extraction process of walnut oil is also a cultural inheritance. Traditionally, walnut oil is extracted by soil pressing, which not only retains the original nutrients of walnut oil, but also makes walnut oil have a unique flavor and aroma. Under the modern production process, although there are more advanced extraction methods, some traditional soil pressing methods are still retained and inherited, becoming a cultural symbol.
In addition, walnut oil has a wide range of applications in edible, health care, and beauty. In terms of edibles, walnut oil can be used for cooking, cold dressing, etc.;In terms of health care, walnut oil has the effects of strengthening the brain, lowering cholesterol, and preventing cardiovascular and cerebrovascular diseasesIn terms of beauty, walnut oil has moisturizing skin, anti-aging and other effects. Therefore, walnut oil has gradually integrated into people's lives and has become a healthy and delicious edible oil.
In general, walnut oil has a long history and culture, and is closely related to people's lives and health. With the continuous progress of modern science and technology and people's continuous pursuit of healthy diet, the application and development prospects of walnut oil will be broader.