Low temperature pressing extraction technology for peony seed oil production

Abstract

The invention discloses a low temperature pressing extraction technology for peony seed oil production. A main solvent adopted in the low temperature pressing extraction technology for the peony seedoil production is butane. Main equipment of the low temperature pressing extraction technology for the peony seed oil production is a huller, a winnowing machine, a seed dryer, a screening machine, ahusking machine, a crusher, an extraction tank, an evaporation tank, a solvent storage tank and a compressor. A novel treatment method is adopted in the low temperature pressing extraction technologyfor peony seed oil production to cause the particle diameter of peony seed kernels to be appropriate and ensure that a butane solvent can fully extract the peony seed kernels at a low temperature; andthe technological process has high degree of automation. The pressure in an extraction vessel and a separation vessel is only 0.1MPa. The manufacturing cost of vacuuming equipment with the pressure reaching 0.1MPa, an extraction tank and a separation vessel which can be sealed at the pressure of 0.1MPa is relatively low. The procurement, operation and maintenance cost of overall equipment is relatively low. The low temperature pressing extraction technology is suitable for large-scale production.

Description

technical field

[0001] The invention relates to the technical field of peony seed oil production, in particular to a low-temperature pressing extraction process for peony seed oil production. Background technique

[0002] Peony seeds are the seeds of peony for oil. At present, there are two types of peony for oil with a large planting area, namely Danfeng peony and purple spot peony. The oil content of the peony seeds produced by both of them is more than 20%. Seed kernels have high oil content, are rich in a-linolenic acid and unsaturated fatty acids, and are resistant to drought, cold and disease. They can be cultivated in ridges and slopes, and do not need to grow in plains for grain planting, so they have a relatively high High economic benefits, and because peony has a certain ornamental value, the industry of peony planting for oil and production of peony seed oil is developing very rapidly.

[0003] Before the oil extraction operation of peony seeds, it is necessary ...