High bioactivity bitter almond oil and extraction method thereof

Abstract

The invention discloses a high bioactivity bitter almond oil and an extraction method thereof. Bitter almond is adopted as the raw materials, and the whole process employs low temperature and bio-processing technology, thus effectively avoiding loss of protein, higher fatty acid, vitamins and other thermal-sensitive nutrients in bitter almond. Microwave irradiation enzyme deactivation, frozen-breaking, enzymolysis and vacuum centrifugation are carried out to obtain free oil, an emulsion and almond residue, the emulsion is subjected to biological demulsification, then vacuum centrifugation is carried out to obtain free oil, the free oil is combined to obtain the bitter almond oil with the advantages of high oil extraction rate (93-97%), high nutrition and active substance content, strong food safety (a cyanide residue amount to less than 0.08mg/kg), and a long shelf life (5-6 years). While enhancing the product quality and yield, the extraction method also increases the variety, yield and additional value of oil extraction by-products, further lowers the oil extraction cost, puts an end to discharge of the ''three wastes'', and protects the environment.

Description

technical field [0001] The invention relates to the technical field of vegetable oil extraction, in particular to bitter almond oil with high biological activity and an extraction method thereof. Background technique [0002] Almond is the seed of apricot, a plant of the genus Prunus in the Rosaceae family. It is also called apricot kernel, apricot, muluozi, bitter almond, apricot plum kernel, sweet plum, etc. It is flat heart-shaped, with a yellowish-brown to dark brown surface, thin seed coat, and a Creamy white, oily. In China, it is mainly distributed in Hebei, Liaoning, Northeast China, North China and Gansu. Almonds are divided into two categories, sweet almonds and bitter almonds. Sweet almonds are sweet, do not contain or only contain 0.1% amygdalin, and have a fat content of 45% to 67%. Bitter almonds are bitter and contain 2% to 4% amygdalin. Almond oil is the essence of almonds. The content of oleic acid and linoleic acid in bitter almond oil reaches more than...

AI Technical Summary

Problems solved by technology

However, the dry crushing has a large shear force and high temperature, resulting in a large loss of nutrients and biologically active substances in almond oil.

[0009] Chinese patent CN102796613B discloses a method of hydroenzymatically extracting soybean oil and microbial demulsification, which belongs to vegetable oil extraction technology. The method includes the following steps: (1) Extrusion and puffing are used to obtain puffed material after soybean crushing, and the puffed material is mixed with Mix with water to obtain a mixed solution, add alkaline protease to the mixed solution for enzymolysis, and centrifuge after enzymolysis to obtain free oil, emulsion, hydrolyzate and residue;