JPS588827B2 - Process for producing high-fiber foods from sugar beet pulp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing edible fine powder from sugar beet pulp, which is produced as a by-product during the production of sugar beet. The aim is to provide new food materials that replenish

Sugar beet pulp is produced by harvesting sugar beet in the field, transporting it to the factory, washing it with a washing device, then cutting it into pieces into cosettes with a cutting device, immersing it in a sugar extraction can, and making it into cossettes. This is the residue after sugar has been extracted, and is usually squeezed and dried, or discharged outside the factory without drying.

When drying, the compressed pulp is dried to a moisture content of about 5% using a rotary dryer that is installed separately from the beet sugar production process and the inlet temperature is usually 400 to 750 degrees, and then the moisture content is readjusted to about 18% and dried. Some of the compressed pulp that is not dried is discharged as raw pulp outside the factory.

These sugar beet pulps are different from dry pulp (
Sugar beet pulp is a by-product with a yield of approximately 5% (moisture content: 18%), and since the sugar beet pulp thus produced contains a large amount of high-quality fiber, it has traditionally been suitable for ruminant animals such as dairy cows and beef cattle. It is used as feed.

On the other hand, some research has been conducted to make sugar beet pulp edible, but it has not been possible to efficiently separate sugar beet's characteristic odor, off-taste components, and woody fibers, and processing methods have not yet been established for its use in food. It is not.

As a result of research into the use of sugar beet pulp as food, the inventors discovered that the off-flavor components are mixed into the sugar beet pulp together with the raw material sugar beet during sugar production, and the substance mainly consists of ash ( (hereinafter referred to as soil ash) can be separated by drying and then crushing and separating, and off-flavor components can be removed together with the ash in the above process, but they can also be completely removed by washing the dried material with water. Lignified fiber is
When the washed product is dried and crushed, it is difficult to crush.
They discovered that they can be separated based on the difference in the degree of grinding, and arrived at the present invention.

To explain the present invention in more detail, sugar beet pulp is obtained by extracting sugar in a sugar extraction step, and then turning it into compressed pulp in a pressing step, which is then dried with a dryer and adjusted to a moisture content of about 18%. be.

This dry pulp contains soil ash, and even if it is pulverized to a fine powder of 100 mesh or less, it not only has a bad taste but also contains a lot of soil substances, making it completely unsuitable for use as food.

In other words, the sugar beet delivered to the factory still has the soil attached to it when it was harvested, so during the sugar manufacturing process, soil and other impurities adhering to the sugar beet are first removed through a washing process. However, it is difficult to remove the soil, etc., and some of the attached soil remains contained in the compressed pulp that is produced as a by-product through the cutting process, extraction process, etc., and does not fall out from the pulp during the drying process.

Table 1 shows the general components of sugar beet parbu that has been pressed after completing the sugar extraction process in a sugar factory.

In addition, as a control, the components of sugar beet pulp obtained by completely washing and removing adhering impurities such as soil, cutting into cossets, extracting sugar, and pressing sugar beet collected from a field are shown for comparison.

As is clear from the table above, the pressed sugar beet pulp contains more ash than the sugar beet itself, that is, soil ash or soluble impurities derived from the soil attached to the sugar beet. As a result, it tastes very bad and emits a foul odor, making it completely unsuitable for use as food, and its use has heretofore been limited to feed.

In the present invention, when drying the sugar beet pulp, for example,
The compressed sugar beet pulp is dried to a moisture content of about 4% using a rotary dryer with an inlet temperature of 750 degrees and an outlet temperature of 120 degrees.

The sugar beet pulp, which has become easier to crush through drying, is crushed using a crusher such as a chip hammer crusher (manufactured by Yalla Machinery Co., Ltd.).

By sieving after coarse crushing, soil ash is transferred to fine powder.

An example is now shown in Table 2.

For comparison, the components of the dried pulp before crushing are shown in Table 3.

As is clear from Tables 2 and 3 above, a large amount is distributed in the pulp with a particle size of 28 mesh or less due to the ash separation, coarse crushing, and sieving processes contained in the dry pulp. After crushing and sieving, coarse particles of approximately 28 mesh or less are removed.

Sieving may be done by sieving, wind selection, or elutriation.

In order to coarsely crush the compressed pulp, it is dried to a predetermined moisture content using a drier.

If the moisture content is high, the pulp will be in a swollen and soft state, making coarse crushing impossible, and for this reason, the pulp is dried to a moisture content of around 20% or less.

In addition, the appropriate degree of crushing is such that the particle size of 6 to 14 mesh occupies a large amount, and suitable crushers include the above-mentioned chip hammer crusher, roll crusher, cone crusher, etc. ing.

The sugar beet pulp that has been coarsely crushed and fine powder has been removed still contains a small amount of off-flavor components, which can be removed by washing the dried product with water as described above.

For this washing, water at a temperature of 30° C. or lower, especially water at a temperature of 15° C. to 20° C. is preferable; if hot water higher than that is used, the dried pulp will swell, making it difficult to separate soil ash, etc., and therefore cannot be used.

The washing treatment may be carried out by placing the coarsely crushed pulp in a washing tank filled with washing water and washing with stirring, or by putting the coarsely crushed pulp into a tank in which washing water is flowing. .

By washing, impurities can be removed by sinking into the water, and floating particulate components are also removed along with the wastewater, resulting in coarsely ground pulp that does not contain impurities such as soil ash.

After washing, the coarsely pulverized pulp is dehydrated in a dehydrator and dried to a level that allows it to be pulverized in the next step.

When drying at too high a temperature, the valve body will be burnt and the odor will become stronger, so the drying temperature should be below 90 degrees, preferably between 80 and 80 degrees.
It is desirable to dry the product in hot air at about 5 degrees Celsius to a moisture content of around 1.0%, and the resulting dried product can be sufficiently pulverized to a moisture content of around 20%.

To illustrate this with an experimental example, coarse pulp is poured into a tank filled with washing water (15°C), washed with agitation, the floating coarse pulp with a mesh size of 28 mesh or less is removed by sieving, and the rest is placed in a centrifuge. The results of component analysis of the coarsely ground pulp obtained by dehydration and air drying were as shown in Table 4.

As shown in the table above, when the coarse pulp larger than 28 mesh is washed with water, dehydrated, and dried, the ash content is reduced to below the ash content of the sugar beet itself, and the soil property increases due to adhesion to the sugar beet from the field. All ash has been removed, soluble impurities and other food-unsuitable ingredients have been reduced, and the resulting pulp has no odor at all.

The above re-dried sugar beet pulp is milled using a normal grinder.
Grind so that the particle size is mainly 0 mesh or less.

At this time, the lignified fibers are difficult to be crushed, and the edible fibers are easily crushed, so that a difference in particle size occurs in the crushed products themselves, and they can be easily separated by sieving.

The impact mill (
Hammer mill, etc.) is suitable, and the screen opening is 1.
Pulverization becomes possible by pulverizing the particles to a size of mm or less.

The micronized sugar beet pulp thus obtained has a low ash content, high cellulose content, and high pectin content, and its components are shown in Table 5.

As shown in Table 5 above, while regular sugar beet pulp has a mouse-colored to pale black color, it is almost white in color and has no odor such as sugar beet odor. For example, if you mix 90 parts of wheat flour with 10 parts of finely ground sugar beet parbu to make udon, it will have almost the same color, odor, and taste as udon made with only wheat flour. The resulting product remained unchanged, and there was no change in texture or taste due to the crude fiber, pectin, etc. contained in the sugar beet pipe.

Furthermore, similar results were obtained for bread, and even when buckwheat was made by mixing about 5 parts of finely ground sugar beet pulp with buckwheat flour, it could be used satisfactorily without any noticeable contamination of sugar beet pulp. Furthermore, it can be used not only for flours such as paste products but also for mixing with fish surimi.

As described above, the finely powdered sugar beet pulp according to the present invention not only makes sugar beet pulp into a fine powder of 100 mesh or less, but also removes components unsuitable for food such as smelly soil ash and soluble impurities by coarsely crushing, sieving, and washing. It is removed through various steps of fine pulverization, and can be mixed with high-fiber foods and peanut flour without any sugar beet odor or taste. It's not necessary.

In recent years, as food refining and processing has progressed, the amount of fiber in the foods we consume on a daily basis has decreased, and the overall amount of fiber intake has tended to decrease. This makes it possible to supplement the lack of fiber intake, which is said to be the cause of the disease outbreak, in an extremely easy way.

This invention is an example of using sugar beet pulp as a fine powder directly as a food material, and its applications are endless.

Examples will be described below.

Example 1 Compressed beet pulp with a moisture content of 69.5% was made into a pulp with a diameter of 3 m and a length of 1
7.9 m, continuously fed into a rotary dryer with an inlet temperature of 700°C and an outlet temperature of 120°C, and 1 ton of pressed beet pulp
320 kg of dried beet pulp with a moisture content of 8 parts was obtained.

Then, after coarsely crushing with a chip hammer crusher (no swing hammer grating),
The beet pulp was sieved using a sieve to remove 28 mesh or less to obtain 270 kg of crushed beet pulp (yield: 84.40%).

Next, this crushed beet pulp was stirred and washed with water at 20°C for 10 minutes in a washing can with a diameter of 3 m and a height of 5 m, after which suspended matter of 28 mesh or less was removed, and the crushed beet pulp was washed with a centrifugal dehydrator (automatic batch type). After dehydration, dry in a rotary dryer to produce 242 kg of dried bead pulp with a moisture content of 5.82%.
(yield 75.63%).

Furthermore, this dried beet pulp was pulverized using a fine pulverizer (hammer mill type; screen opening 05th interval), and then sieved through a 100 mesh sieve to obtain 186 kg of heat pipe fine powder (yield 58.13%) of 100 mesh or less. Obtained.

Honmachi's edible finely refined beet pulp was good as a food material in terms of taste and texture.

Example 2 50 g of finely ground beet pulp obtained in Example 1, 75 g of buckwheat flour
0g of wheat flour and 200g of wheat flour were kneaded with a small amount of hot water to make and eat soba noodles.

The taste, flavor, and texture were all good and delicious.

Example 3 50g of fine beet pulp obtained in Example 1 was mixed with 65g of soft flour
0 g, mixed with 300 g of strong flour, 25 g of Nitsuten Yeast (trade name), 10 g of salt, 40 g of sugar, and 40 g of shortening oil were added, kneaded by hand, fermented in a conventional manner, molded, and baked in a bread oven.

After baking, the volume of the bread was measured and found that there was no difference from the bread without the addition of finely ground beet pulp, and the taste was unchanged.

Claims (1)

[Scope of Claims] 1. A dried sugar beet pulp obtained by extracting sugar from sugar beets and drying is pulverized, the fine part is removed and washed with water, and this is re-dried and pulverized to obtain a fine powder under the sieve after being sieved. A method for producing a high-fiber food from sugar beet pulp, characterized by collecting. 2. A first step of extracting sugar from sugar beets and then pulverizing dried sugar beet pulp with a moisture content of 20% or less, and a second step of removing fine particles of 28 mesh or less from the pulverized material obtained in the first step by sieving. Claim 1, which consists of a third step of washing and dehydrating the sieved material of the second step, and a fourth step of pulverizing the dried material of the third step and collecting the fine powder under the sieve. A method for producing high-fiber foods from sugar beet pulp.