CN104818108A - Soybean oil and production technology thereof - Google Patents

Abstract

The invention provides a soybean oil and a production technology thereof. The technology sequentially comprises the following steps: 1, airing soybean kernels; 2, sending the aired soybean kernels into a cold store, refrigerating for 16-18h, taking out the soybean kernels, sending the soybean kernels into a tunnel drying room, drying, and repeating processes in step 2; 3, putting hot soybeans in a crusher, crushing for removing peels, transferring the crushed soybeans into a seed processing vehicle, and separating peels from kernels under the action of wind to obtain peeled soybean kernels; 4, pressing the soybean kernels by using a hydraulic press to obtain crude oil; and 5, precipitating the crude oil for 36-48h, and filtering to obtain finished oil. The soybean oil has thick and fragrant smell and unique flavor, and has high nutrition values and health care and health preserving effects, and the technology ensures high oxidation resistant active components, and is especially suitable for being popularized in the field of small-batch extraordinary oil production technologies.

Description

Soybean oil and production technique thereof

Technical field

The present invention relates to a kind of method of producing soybean oil, art: two, biological and new medical technology, (seven) modern agricultural technology, 4, agricultural-food intensive processing and modern accumulating: agriculture and forestry product and extraordinary enhance productivity are processed.

Background technology

Soybean oil is that in people's daily life, every day must obligato edible oil, is mainly used in cooking, fries, decocts, fried food etc., and consumption is very large, and the security of soybean oil and healthy nutritive value more and more become the focus that people pay close attention to.

Mainly there is following security hidden trouble in current soybean oil product:

1, the unsafe factor that brings of extraction technique, what current soybean oil production generally adopted is the extraction technique that mechanization degree is high, oil yield is high, the soybean oil of this explained hereafter has following potential safety hazard: 1) problem of solvent residual: in immersion oil process, use a large amount of organic solvent, organic solvent residual in finished product soya-bean oil has certain harm to HUMAN HEALTH; 2) refining process produces objectionable impurities: the soybean oil that extraction goes out is called crude oil, the impurity containing volume, can not directly eat, and needing through coming unstuck, alkali refining, decolouring, after deodorization, just can become edible soybean oil; Refining process can produce unwholesome trans fatty acid and toxic substance--the precursor of propylene chlorohydrin; 3) refining process makes natural nutrition lose seriously: containing abundant natural nutrition health-care components in soybean: Yelkin TTS, VE, sterol etc.; Refining processing makes the nutritive substance loss of these preciousnesses serious, after soybean oil refining, has become a kind of high calorie, high-energy cooking oil almost not having what nutritive value; 4) natural VE (powerful natural oxidation inhibitor) loss in the soybean oil after refining is serious, in order to ensure soybean oil not deterioration by oxidation in storage process, needs additionally to add antigen oxidation additive.

2, conventional press technique Problems existing, traditional soybean oil squeezing process, although avoid problem of solvent residual, in order to eliminate beany flavor in product and other peculiar smell, increase oil yield, first by soybean through heat denatured process.High-temperature heating treatment, not only makes the heat loss such as the unsaturated fatty acids in soybean, VE, and makes that the crude oil color of squeezing out is dark, impurity is many, also has to pass through to come unstuck, alkali refining, decolouring, after deodorization, just can become edible soybean oil.So, still bring the nutritive ingredients such as unsaturated fatty acids, VE, Yelkin TTS to destroy serious, and the healthy material of the harm such as propylene chlorohydrin precursor, trans fatty acid may be produced, and additionally add the problems such as oxidation inhibitor.

Summary of the invention

The object of the present invention is to provide the soybean oil production method of a kind of easy, nutritive value and health care, rational technology.

Technical scheme of the present invention is achieved in that and comprises the steps:

A, airing is carried out to soybean, controls water ratio 3%-5%:

B, be sent in freezer and refrigerate 16-18 hour, temperature of ice house is-25--20 DEG C; After taking-up, be sent in tunnel type drying room and dry, baking room temperature is 50-60 DEG C, and the time is 5-6 hour; Repeated multiple times;

C, hot soybean is put into crusher fragmentation remove clothing, then proceed in seeds processing cart, under wind effect, make underwear be separated with seed benevolence, must remove the large beans of skin, membrane-removing rate is more than 85%;

D, large beans hydropress is added extrusion crude oil;

Large beans are made cake and puts into hydropress, often squeeze and throw cake 20-25 block, every block is about 4-6kg, equably pressurized hydraulic low pressure, when making pressure be pressed onto 110-120MPa, low pressure is transferred to high pressure, and uniform pressurization is to during 280-300MPa, during squeezing, can not be too fast, in order to avoid cake slag oozes out;

Filter after E, crude oil precipitation 36 ~ 48h, obtain processed oil;

After crude oil precipitation 36 ~ 48h, oil is evenly crossed through flame filter press and filters impurity, obtain processed oil.

Advantage of the present invention is:

Production technique of the present invention gets that the product colour of oil is shallow, the special odor that has soybean and remain nutritive ingredient; Oven dry in traditional technology, steaming are fried and decoloration process needs to add gac or atlapulgite, oven dry is got oil and is made the increase of benzopyrene content need to add charcoal absorption, steam fry get oil color more deeply need to add activated decoloration, although can remove unfavorable factor, complicated operation, interpolation chemical substance can remove the special odor of nutritive ingredient and beans raw meat.

The invention provides the soybean oil production method of a kind of easy, nutritive value and health care, rational technology, can produce for short run special oil and technical support is provided, be suitable for promoting in edible fat production technical field.

Embodiment

A kind of soybean oil production technique:

A, airing is carried out to large beans, control water ratio 4%;

B, be sent in freezer refrigerate 17 hours, temperature of ice house is-24 DEG C; After taking-up, be sent in tunnel type drying room and dry, baking room temperature is 55 DEG C, and the time is 5 hours; 3 times repeatedly;

C, hot soybean is put into crusher fragmentation remove clothing, then proceed in seeds processing cart, under wind effect, make underwear be separated with seed benevolence, must remove the large beans of skin, membrane-removing rate is 89%;

D, the large beans hydropress dried is added extrusion crude oil;

Large beans are made cake and puts into hydropress, often squeeze and throw cake 23 pieces, every block is about 5kg, equably pressurized hydraulic low pressure, when making pressure to 115MPa, low pressure is transferred to high pressure, uniform pressurization to during 285MPa, during squeezing, can not too soon, in order to avoid cake slag oozes out;

Filter after E, crude oil precipitation 36h, obtain processed oil;

After crude oil is precipitated 36h, oil is evenly crossed through flame filter press and filters impurity, obtain processed oil.

The present invention can be used for special oil and produces, and is applicable to nutritive value and health care's edible fat production, accomplishes pollution-free, less energy-consumption.

Claims (1)

1. produce a working method for soybean oil, it is characterized in that comprising the steps:

A, airing is carried out to soybean, control water ratio 3%-5%;

B, be sent in freezer and refrigerate 16-18 hour, temperature of ice house is-25--20 DEG C; After taking-up, be sent in tunnel type drying room and dry, baking room temperature is 50-60 DEG C, and the time is 5-6 hour; Repeated multiple times;

C, hot soybean is put into crusher fragmentation remove clothing, then proceed in seeds processing cart, under wind effect, make underwear be separated with seed benevolence, must remove the large beans of skin, membrane-removing rate is more than 85%;

D, large beans hydropress is added extrusion crude oil;

Large beans are made cake and puts into hydropress, often squeeze and throw cake 20-25 block, every block is about 4-6kg, equably pressurized hydraulic low pressure, when making pressure be pressed onto 110-120MPa, low pressure is transferred to high pressure, and uniform pressurization is to during 280-300MPa, during squeezing, can not be too fast, in order to avoid cake slag oozes out;

Filter after E, crude oil precipitation 36 ~ 48h, obtain processed oil;

After crude oil precipitation 36 ~ 48h, oil is evenly crossed through flame filter press and filters impurity, obtain processed oil.