A kind of efficient peeling method of bitter almond

Abstract

The invention relates to an efficient method for peeling bitter apricot kernels. According to the method, bitter apricot kernels are peeled by using a superheated steam technology, rapid drip washingis carried out on the pre-frozen bitter apricot kernels with water after the pre-freezing treatment on the bitter apricot kernels, dust and impurities on the surfaces of the bitter apricot kernels areremoved, then superheated steam treatment is performed, the treated bitter apricot kernels are taken out, and the bitter apricot kernels are rolled and ground into halves with a peeling machine so asto achieve the purpose of rapid low-emission peeling. The method adopts superheated steam, and the epidermis of the bitter apricot kernels swell and crack during heating in a high-humidity and high-temperature environment, so that the realization of peel-kernel separation is facilitated in the later rolling and grinding. Besides, the temperature of the superheated steam is in a one-to-one corresponding relation with pressure, and the temperature of the superheated steam can be changed by reducing the pressure, in other words, the saturation temperature of the steam can be reduced by reducingthe pressure, so that the better peeling effect is achieved, and the loss of the effective components in the peel in conventional peeling processes is reduced due to high-temperature water, and the nutritional value of the apricot kernel peel is greatly reserved, and later development and utilization on peel are facilitated.

Description

technical field [0001] The invention belongs to the technical field of processing bitter almonds, and in particular relates to a high-efficiency peeling method for bitter almonds. Background technique [0002] Almonds are the dry seeds of apricot fruit, flat heart-shaped, reddish brown or dark yellow seed coat. Almonds are rich in nutrients. Each hectogram of almonds contains 23-27g of protein, 50-60g of crude fat, and about 10g of sugar. It also contains calcium, phosphorus, iron, potassium, selenium and other inorganic salts, as well as riboflavin, niacin, and ascorbic acid. And other multivitamins, it is a good nourishing product. [0003] At the same time, because bitter almond contains about 3% amygdalin, it can be decomposed (hydrolyzed) to produce benzaldehyde and hydrocyanic acid under the action of β-glucosidase coexisting with it. Benzaldehyde has a special fragrance and is a flavor substance in almond products; while hydrocyanic acid is a highly toxic substance ...

AI Technical Summary

Problems solved by technology

The disadvantages of this peeling method: on the one hand, the water consumption is large (the ratio of solid to liquid is 1:8 to 1:20), the discharge of waste water is large, and the environmental pollution is serious; changes and losses

However, there are relatively few cases of domestic development and utilization

The traditional boiling water and lye peeling results in a low preservation rate of nutrients in the skin, serious pollution of the peeling water, and serious browning of almonds after peeling

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