Dry ampelopsis grossedentata powder and application thereof

Abstract

The invention discloses dry ampelopsis grossedentata powder. The dry ampelopsis grossedentata powder is prepared through the following steps in sequence: freeze-drying fresh ampelopsis grossedentata leaves; pulverizing the dried fresh ampelopsis grossedentata leaves into at least 180 meshes, and dispersing with distilled water, wherein the ratio of the fine ampelopsis grossedentata powder to the distilled water is 2 g: 30 ml; putting the dispersed fine ampelopsis grossedentata powder into a pulverizer and pulverizing to obtain ampelopsis grossedentata leaf nanoparticles; adding ethyl alcohol into the ampelopsis grossedentata leaf nanoparticles to lead to the mass percent of final concentration of the ethyl alcohol to 55%, conducting flash extraction for 1.5 minutes, centrifuging an extracted solution at 4000 rpm for 15 minutes, and taking a liquid supernatant; putting 200 ml of the obtained liquid supernatant into a 500 ml round-bottom flask, decompressing and evaporating to dryness at the vacuum degree of 0.08 MPa at the revolving speed of 60 rpm at the bath temperature of 60 DEG C; dissolving out a residue with 100 ml of distilled water, spraying, and drying to obtain the dry ampelopsis grossedentata powder.

Description

technical field [0001] The invention belongs to the field of food processing, in particular to a dried snake raisin powder with high content of flavonoids, polysaccharides and polyphenol active substances and its application. Background technique [0002] Snake Grape ( Ampelopsis grossedentata ) is a wild vine belonging to the phylum Angiosperms, Dicotyledoneae, Rosaceae, Vitaceae, and Snake Grape. It is also known as vine tea, white tea, nectar tea, etc. It is a unique plant in China. Xiong Haoping analyzed the composition of the Snake Grape and found that it contains 10% of water-soluble polysaccharides, 20% of polyphenols, and 30% of flavonoids ("Journal of Chinese Food Science", Volume 4, Issue 3, No. pp. 68-71). Flavonoids, polysaccharides and polyphenols have antioxidant, antibacterial and antitumor activities, respectively. It has been reported that the snake grape has the function of blocking the peroxidation of lipid compounds and scavenging free radicals, mainta...

AI Technical Summary

Problems solved by technology

Li Zhonghai et al. studied the influence of different extraction conditions on the extraction rate of total flavonoids in Grape dentata, and obtained a higher extraction rate of flavonoids. The first extraction of total flavonoids and water extraction rates reached 75.87% and 80.56%, and the second The sum of the two extraction rates is over 90% ("Food Industry Science and Technology", 2006, Volume 27, Issue 12, Page 107-109, 111), but this extraction process does not involve the extraction of other active ingredients

So far, there is no relevant report about the extract of Eperodendron grape with high content of flavonoids, polysaccharides and polyphenol active substances