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Long shelf life bitter almond oil and extraction method thereof

A technology of bitter almond oil and extraction method, which is applied in the direction of using additives to preserve fatty substances, edible oil/fat, fat oil/fat production, etc., can solve the problem of large loss of almond oil nutrition and bioactive substances, affecting the safety and stability of oily food It can improve the utilization rate of raw materials, improve food safety, and have strong antioxidant capacity and stability.

Inactive Publication Date: 2016-03-23
天津天绿健科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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; Inorganic salt liquid medium is fermented to obtain mixed demulsifying bacteria full culture solution; (3) the emulsion obtained in step 1) is adjusted to neutral pH, fully mixed with mixed demulsifying bacteria full culture solution, and left to stand for constant temperature demulsification, Soybean oil is obtained by centrifugation after demulsification; although the demulsification rate is high, the oil after demulsification is centrifuged and mixed with demulsifiers and water, and the emulsion oil, demulsifiers and water cannot be completely separated, affecting Food Safety and Stability of Oils and Fats
The bitter almond oil extraction rate that above-mentioned method makes is lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1 raw material preparation

[0059] 1. Preparation of Chinese herbal medicine extract:

[0060] The preparation method of the Chinese herbal medicine extract comprises the following steps: in parts by weight, weigh 16 parts of licorice, 15 parts of astragalus, 14 parts of epimedium, 13 parts of dried ginger, 10 parts of angelica dahurica, and 6 parts of codonopsis; Clean 12min at 200W, 30KHz in an ultrasonic cleaning machine with 0.2% sodium bicarbonate solution, drain, grind the above-mentioned Chinese herbal medicine to a particle size below 2mm, put it in a container for uniform mixing and add 5 times the weight of water to obtain a mixed material, Control the temperature at 80°C for 3 hours, then lower the temperature to 45°C, adjust the pH value to 4.0 with lactic acid, carry out microwave extraction for 12 minutes under the condition of power 200W, and carry out ultrasonic-assisted extraction under the condition of power 250W and frequency 35KHz; 1.0% ...

Embodiment 2

[0064] A method for extracting bitter almond oil with a long shelf life, comprising the steps of:

[0065] 1) Enzyme inactivation by microwave irradiation: immerse the bitter almonds in a sodium bicarbonate solution with a concentration of 0.1% by mass, rinse at room temperature, drain, put in a container, seal and let stand for moistening for 3 hours, then peel the peeled bitter almonds, put the peeled bitter almonds into the microwave In the drying machine, the frequency is 2450MHz, the power is 2000W, the temperature is 85°C, and the thickness of the material layer is 4cm. The enzyme is irradiated for 3 minutes, and the microwave irradiation is 10s, and the interval is 20s;

[0066] 2) Freezing and crushing: soak bitter almonds after microwave irradiation to inactivate enzymes in 0.2% citric acid solution at room temperature for 3 hours, rinse with clean water twice, drain, and freeze at -23°C with a material layer thickness of 9 cm for 4 hours , crushed to a particle size ...

Embodiment 3

[0078] A method for extracting bitter almond oil with a long shelf life, comprising the steps of:

[0079] 1) Enzyme inactivation by microwave irradiation: immerse bitter almonds in a sodium bicarbonate solution with a concentration of 0.05% by mass, rinse at room temperature, drain, put in a container, seal and let stand for moistening for 2 hours, then peel the peeled bitter almonds, put the peeled bitter almonds into the microwave In the drying machine, the frequency is 2450MHz, the power is 1000W, the temperature is 80°C, and the thickness of the material layer is 3cm, microwave irradiation is used to inactivate the enzyme for 2 minutes, and the microwave irradiation is 10s, and the interval is 20s;

[0080] 2) Freezing and crushing: soak bitter almonds after microwave irradiation to inactivate enzymes in a citric acid solution with a mass percentage concentration of 0.1% at room temperature for 2 hours, rinse with water once, drain, and freeze at -20°C with a layer thickne...

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Abstract

The invention discloses a long shelf life bitter almond oil and an extraction method thereof. In the method, bitter almond is used as a raw material, the whole course uses low temperature and bio-processing technology, the loss of heat-sensitive nutrients such as proteins, high-level fatty acids and vitamins in the bitter almond is effectively avoided, a free oil, an emulsion, a hydrolysate and almond residue are obtained by microwave irradiation deactivation of enzymes, freeze-breaking, enzymatic hydrolysis and vacuum centrifugation, the emulsion is subjected to biological demulsification and then to secondary vacuum centrifugation to obtain a free oil, and the free oils are combined to prepare the bitter almond oil that is high in oil extraction rate (93-97 %), high in nutrient and active matter contents, high in food safety (cyanide remaining less than 0.08 mg / kg) and long in shelf life (5-6 years). The extraction method has the advantages that product quality and yield are increased while post-oil extraction side products come in more types, higher yield and higher added value, oil extraction cost is further reduced, emission of 'three wastes' is avoided and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of vegetable oil extraction, in particular to bitter almond oil with a long shelf life 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 90%, o...

Claims

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Application Information

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IPC IPC(8): C11B1/00C11B1/04C11B5/00A23D9/02A23D9/06
CPCC11B1/00A23D9/02A23D9/06C11B1/025C11B1/04C11B5/0021C11B5/0092
Inventor 李建树
Owner 天津天绿健科技有限公司
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