JP2003026947A - Method for simultaneous preparation of anthocyanin dye and dye-containing powder from anthocyanin dye- containing potato - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for the simultaneous preparation of the anthocyanin dye and dye-containing powder of an anthocyanin dye-containing potato which method is capable of preparing simultaneously and efficiently the dye and dye-containing dry powder from a colored potato. SOLUTION: The method is such that an anthocyanin dye is extracted by immersing in an acidic solution soon after cutting, such potato containing the anthocyanin in the skin/pulp part as to belong to a common cultivar such as Solanum tuberosum ssp. andigena L. or Solanum phur eja Juz. et Buk., or to a heterogenic cultivar, or to a race which is subjected to the breeding and crossing on the basis of the above cultivars and is advanced in the improvement in the practical character such as the dye concentration, disease resistance and yield, and such that at the same time a dry powder is obtained by washing with water a dye extracted residue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simultaneously producing an anthocyanin pigment-containing potato anthocyanin pigment and a pigment-containing powder, which is capable of efficiently producing a pigment and a pigment-containing dry powder from colored potato.

[0002]

2. Description of the Related Art The main process for producing anthocyanin pigments is to extract various pigment-containing plants as raw materials under acidic conditions and dispose of the residue as industrial waste or neutralize and mix it with soil. Was the way. The same applies to the production of anthocyanin pigments using colored potato as a raw material, and the residue after pigment extraction had no utility value and had to be disposed of. Also, when producing a dry powder product in colored potato, since the anthocyanin pigment easily oxidizes and browns due to the action of the oxidase (polyphenol oxidase) present in the potato tubers, the enzyme is used as a pretreatment to reach dry powder. Special treatment such as heat deactivation was required.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to propose a production method capable of extracting an anthocyanin pigment from colored potato as a raw material and simultaneously obtaining a pigment-containing powder without producing a residue. And

[0004]

The present invention provides a Solanum tuberosum ssp. And containing an anthocyanin pigment in the skin and meat.
Common cultivated species or heterogeneous cultivated species such as igena L. and Solanum phureja Juz. et Buk., or cross breeding based on them, varieties that have been improved in practical traits such as pigment concentration, disease resistance, and yieldability, Immediately after cutting, it is immersed in an acidic aqueous solution to prevent discoloration of the pigment by inhibiting the oxidase activity in potato tubers, which enables highly efficient pigment extraction, and the residue is dried quickly with hot air or infrared. It was found that the fading of the powder after drying can be prevented by shifting to the process.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Even when red cabbage, purple sweet potato and the like are cut for pigment extraction, the fading of the pigment due to oxidation is gradual and does not affect the extraction and production of the pigment. However, in the anthocyanin pigment-containing potato (hereinafter referred to as colored potato), which is the object of the present invention, discoloration and fading of the pigment due to oxidase start immediately after cutting. This is because oxidases such as polyphenol oxidase (tyrosinase) contained in colored potato tubers easily discolor and decompose anthocyanin pigments. The production method of the present invention for efficiently extracting the anthocyanin pigment contained in such colored potato and using the residue to produce a potato dry powder without impairing the color tone derived from the anthocyanin pigment will be described in detail below.

First, mud and the like on the surface of colored potato tubers is washed with running water, and then cut with a cutter. At that time, it is important that the cut potatoes are immediately put into the acidic solution water tank. This means that the cut potato slices are extremely exposed to the air for a short time and prevent discoloration due to polyphenol oxidase, thereby improving the extraction efficiency of the pigment and preventing discoloration during the drying process of the residue. .

The acidic solution used for this extraction has a pH of
An acidic solution of 2.0 to 5.0 is desirable, and a pH of around 3.0 is the best. If the pH is lower than 2.0,
When the dry powder is used for food, livestock feed, fertilizer, etc., the high acidity causes a harmful effect. Also, the pH
When it is higher than 5.0, the anthocyanin dye becomes unstable, and the wear of the dye due to self-decomposition easily occurs. Also,
The acid that can be used to make this acidic solution is 0.3-
Mineral acids such as about 5.0% sulfuric acid and hydrochloric acid, and organic acids such as citric acid and lactic acid are included. In particular, when the residue dry powder is used as food or livestock feed, it is best to use about 3% of organic acid. Further, the immersion time is about 12 to 72 hours, and the temperature of the acidic solution (liquid temperature) is about 0 to 40 ° C. Particularly preferable conditions are soaking time 24-48 hours, temperature (liquid temperature) 15-
The condition is 25 ° C.

The dye extract thus obtained may be treated according to a conventional method for producing anthocyanin dyes. That is, first, the extract is subjected to solid-liquid separation, filtration using a filter aid, etc. to remove insoluble matter to obtain a clear extract. Next, the anthocyanin dye in the obtained clear orange extract is treated with a non-polar porous polymer resin, for example, Amberlit.
After being adsorbed to a methacrylic acid ester resin such as eXAD-7 (manufactured by Organo) or a styrene-divinylbenzene resin such as HP-20 (manufactured by Mitsubishi Kasei) and washed well with water, hydrophilic organic Elute with a solvent such as ethyl alcohol. The eluate is concentrated by a known means such as vacuum concentration to obtain a colored potato pigment concentrate. At least one of sorbitol, reduced starch saccharified, dextrin, trehalose, etc. for stabilizing the formulation in a concentrated solution
A colored potato pigment preparation is prepared by adding seeds, organic acids such as citric acid, or adding ethyl alcohol for preservation.

On the other hand, a suitable amount of water is added to the residue to wash away the organic acid to some extent, and then dried by hot air drying or infrared drying. The dried product is crushed by a crusher and sieved to prepare a colored potato dry powder.

As described above, according to the present invention, an anthocyanin dye and a dye-containing powder can be efficiently obtained from colored potato at the same time.

[0011]

EXAMPLES Examples of the present invention will be shown below.

[Process 1] Colored potato tuber washing 400
After washing 0 kg with running water, the tubers were sterilized (chlorine concentration 100
(ppm) treatment and immediately after cutting (10 mm x 10 mm or less), an acidic solution (400 liters of 3% citric acid aqueous solution, pH)
After soaking for 24 hours in the vicinity of 3 (room temperature), solid-liquid separation (1
00 mesh filter cloth). A crude extract dye solution (5000 liters) and an intermediate residue were obtained.

[Treatment step 2] The intermediate residue obtained in the above-mentioned treatment step 1 is washed with water 10 times (batch method 400 liters).
I went. A crude extract dye solution (4000 liters) and a dye extraction residue were obtained.

[Treatment Step 3] The crude extraction pigment liquid obtained in the treatment step 1 and the washed crude extraction pigment liquid obtained in the treatment step 2 are mixed (total amount: 9000 liters) and filtered with a filter press ( 9 kg of filter aid was added), and purification (non-polar porous polymer resin 50 liter column) was passed through,
It was washed with water (200 liters). The dye adsorbed on the column was eluted with 50 liters of 85% V / V ethyl alcohol aqueous solution. After that, wash with water (50 liters)
did. A dye eluate (50 liters) and a water washing solution (50 liters) were obtained.

[Processing step 4] The dye eluate obtained in the processing step 3 and the washing solution were mixed (total amount 100 liters) and concentrated under reduced pressure (60 ° C.) to obtain the dye concentrate (10 kg). Was prepared (dye concentration adjustment: dye preparation absorbance 50, reduced starch syrup 25%, ethyl alcohol 15%, citric acid (crystal) 5%). Then, sterilize (70 ℃, 3
0 minutes), foreign matter removal (1 micron cartridge filter), inspection, weighing and packing, packaging (food additive, colored potato pigment preparation, 50 kg production) and shipped.

[Treatment step 5] The pigment extraction residue (4000 kg) obtained in the above-mentioned treatment step 2 is dried (at 60 ° C,
15h), the dried product is crushed, and vibrated and sieved (70
Mesh) and a magnet trap pass (8000 gauss). Then, it was inspected, weighed and filled, and packed (food material, colored potato dry powder, 500 kg manufactured) and shipped.

[0017]

As described above, the production method of the present invention is capable of producing a pigment and a pigment-containing dry powder from anthocyanin pigment-containing potato at the same time with high efficiency. It is possible to establish the effective use of the pigment extraction residue, which is normally only handled as industrial waste, by producing the pigment using all products regardless of the standard and using the pigment extraction residue. As a result, it has a great effect on effective use of resources and reduction of manufacturing cost. That is, in the present age where the reduction of garbage and recycling of resources are being highlighted, the present situation has not been established by the idea of profit priority only that the manufacturer has built up until now, but the present invention contains the anthocyanin dye as a raw material. It can be effectively used without producing industrial waste from potatoes. Furthermore, the present invention can broaden the concept of final product design by using the dye and the dry powder product, and can easily adjust the content of the anthocyanin dye, which is considered to be good for health, and has the functionality. It is expected to play a major role in product design.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuji Oda             5-1-1 Higashi 2-jo Minami, Memuro-cho, Kasai-gun, Hokkaido (72) Inventor Hiroaki Yamauchi             9-3 West 1-jo Minami, Memuro-cho, Kasai-gun, Hokkaido             9 (72) Inventor Chie Endo             17-8 South, Nakabushiko Line 7, Memuro-cho, Kasai-gun, Hokkaido (72) Inventor Motoyuki Mori             6-3, Higashi 1-jo Minami, Memuro-cho, Kasai-gun, Hokkaido             9 (72) Inventor Akiko Takada             5-1-1 Higashi 2-jo Minami, Memuro-cho, Kasai-gun, Hokkaido (72) Inventor Yoshio Oka             7-2-2, Roppongi 28-305, Minato-ku, Tokyo (72) Inventor Kazuya Hayashi             5-5 Tabata, 5th Taba, Kita-ku, Tokyo (72) Inventor Takahisa Tezuka             1-6-6 Takasago 28-207, Soka City, Saitama Prefecture             issue (72) Inventor Ryujiro Shiina             2-17 Makuhari Hongo, Hanamigawa-ku, Chiba City, Chiba Prefecture             Ground No. 28

Claims (2)

[Claims] 1. Potato Solanum tuberosumssp. Andigena L. and Solanum phure containing anthocyanins in the skin and meat
ja Juz. et Buk. Ordinary cultivated or heterogeneous cultivated cultivars, or cultivars bred and bred based on them to improve practical traits such as pigment concentration, disease resistance and yield, are treated with an acidic solution immediately after cutting. While dipping in to extract the anthocyanin pigment,
A method for simultaneously producing an anthocyanin pigment and an anthocyanin pigment-containing powder of potato containing an anthocyanin pigment, wherein the pigment extraction residue is washed with water to obtain a dry powder. 2. The simultaneous production method of an anthocyanin dye-containing potato anthocyanin dye and a dye-containing powder according to claim 1, wherein the acidic aqueous solution is an organic acid aqueous solution having a pH of 2.0 to 5.0.