Lanzhou people have a long history of cultivating roses. Qing Ganlong's Gansu Tongzhi says, "Roses come out of Lanzhou", and the bitter water town in Yongdeng County has the best quality and is famous all over the world. Bitter rose, also known as "Rosa roxburghii", is the city flower of Lanzhou. Rose is a deciduous shrub of Rosaceae, with prickly stems, large purplish red flowers, lush foliage, numerous flowers, plump petals, bright colors and strong fragrance. During Qianlong, Qin Weiyue, an academician of Lanzhou, wrote a poem praising: "The brocade covered with moss in the glow of the sun adorns the fragrant garden. "The flowers in Xilong are late and leap at the same time, and the flowers in Duanyang are full of fragrance. Points out the characteristics of good rose color and fragrance. Bitter rose is not only attractive, but also can be planted in the backyard of vestibule and alley beside the street, setting off the charming scenery of "as thick as orangutan's primary dye, with deep red as light red"; Moreover, the fragrant rose flowers can be used for sugar pickling, honey making, wine making, making sauce, drinking tea or preparing various sweets and cakes; Rose oil is a valuable perfume for cigarettes, soaps, perfumes and high-grade cosmetics. Rose can regulate qi and promote blood circulation, soothe the liver and relieve depression. It has obvious curative effect on liver and stomach gas pain, traumatic injury, menorrhagia, swelling and pain, dyspepsia and so on. Lanzhou bitter water rose and essential oil production rank first in the country, becoming the best-selling flower in the country. (Lanzhou)

Geographical scope

Yongdeng County is located in the central part of Gansu, a suburb in the northwest of Lanzhou, at 12 36' to 13 45' east longitude and 36 12' to 37 7' north latitude. The registered production areas of geographical indications of "Bitter Water Rose" are 96 administrative villages in 12 towns, including Bitter Water Town, Hongcheng Town, Longquansi Town, Datong Town, Liushu Town, Zhongbao Town, Shangchuan Town, Chengguan Town, Shuping Town, heqiao town, Liancheng Town and Vu Thang Yi Town, with an area of 2,96 square kilometers, a planting area of 6,7 hectares and an annual output of 5,25 tons of Bitter Water Rose.

product quality characteristics

1. External sensory characteristics: Bitter rose belongs to Rosaceae, which is a natural hybrid of blunt-toothed rose and China traditional rose. It is a semi-double-petal small flower rose, which belongs to Asian fragrance type and grows at an altitude of 16-24 meters. It is a rare natural rose variety in the plateau in the world. Bitter water rose is a kind of edible and medicinal variety, which is a typical representative of oriental fragrance type. Bitter rose buds are compact, the single weight of fresh buds is .85-.95g, the receptacle is small and pot-shaped, the petals are tender and dark pink, the fragrance is unique and rich, with silky texture, and the taste is sweet and slightly astringent, with 18-24 petals per single flower; The dry buds are full, the sepals are yellow-green, the buds are purple and fragrant. Bitter rose has a high oil yield and is rich in selenium, which is the top grade of food, medicine and beauty beauty. It is a good raw material for "Lanzhou Sanpaotai" and all kinds of flower drinks and tea drinks. 2. Intrinsic quality characteristics: The content of volatile oil in Bitter Rose is between .2 ml/g and .5 ml/g, which is much higher than the highest content of .3ml/g in other rose varieties; Total flavonoids (calculated as rutin) ranged from .33 g/1 g to .58 g/1 g, which was also much higher than the highest content of other roses (.4g/1g). It has pharmacological effects on cardiovascular and cerebrovascular diseases, digestive system, metabolism, immune function, anti-oxidation, anti-aging and anti-tumor. 3. Safety requirements: The origin environment of Bitter Water Rose strictly complies with NY536-21 Environmental Conditions of Edible Flowers for Pollution-free Food; The products of Bitter Water Rose are strictly in accordance with NY/T214-212 Green Food Substitute Tea.