JPH0319630A - Calcium-enriched vegetable and enriching process - Google Patents

Abstract

PURPOSE:To obtain enriched vegetable having high Ca content by carrying out hydroponic culture of a plant of family Cruciferae or family Compositae in a culture liquid containing CaCl2. CONSTITUTION:A plant of family Cruciferae or family Compositae [e.g. KOMATSUNA (Suaeda ghuca, a kind of Chinese cabbage] is cultured in a nutrient liquid containing 0.05-0.35wt.% of CaCl2 for 3-1 weeks to obtain a Ca-enriched vegetable having a Ca content higher than that of a field-cultured vegetable by 50-150%.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to calcium-fortified vegetables and a method for fortifying the same.

BACKGROUND OF THE INVENTION Vegetables are generally cultivated in soil, and the mineral content in vegetables is largely influenced by the components of the soil in which they are cultivated. Vegetables are considered to be a food that maintains and improves health, and are being eaten more frequently because of their vitamins, minerals, and fiber. This is because it contains a lot of minerals such as calcium and iron.

In particular, calcium is one of the nutrients for which the average intake of Japanese people does not reach the nutritional requirements, and it is important to further increase the calcium content in vegetables, which play a major role as a source of calcium.

In recent years, hydroponic technology has advanced, and various leafy vegetables and fruit vegetables have come to be produced by hydroponic cultivation. However, attempts to increase the content of minerals such as calcium in vegetables have been made using methods for producing culture water using minerals eluted from maifan stone (Japanese Patent Application Laid-Open No. 179026/1982), and mixing water-soluble urinary salts with water. system to
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In cases where research is being conducted on minerals such as magi, sium, iron 2, etc., research is being conducted on the proportion of minerals mixed in order to allow vegetables to grow normally and increase yields, as well as research on mineral deficiencies. In most cases, [e.g. Doi Shi 48]
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In addition to calcium chloride, the main nutrient solution is usually
(Multiple ht elements as {ε required for cultivation)
Element JX lfJ Q 4! /J ToL,'(: For Irunoka, L'z culture - [,, (1 useful 5,, L'yang liquid composition is powder, granules, 7g}7 i night) Prepared as When using it for hydroponic cultivation, it is suitable for use in hydroponic cultivation.

This amount of C = zl4, then T (v element), P (phosphorus), K (Jri), S ({ou), La (power IL7um). Mg (mage f./”) lb) or
Trace elements Fe (ffi'!), Zn (zinc) 4゛5yohi [3 (boron), Mn (mankan), Cu (copper) M
O (molybdenum/) etc. can be drilled. The end of that
t is based on the required proportions.

Calcium as a fluorine source is generally considered to be present in the nutrient solution at a concentration of about 0.02% by weight, and as a source of calcium. , usually nitric acid).

Cultivation i1'i of the present invention: In, sprayed Kasuri 2 water 1 [
．． Oyohi[”] fl Culture 1fl! iJ} ”N [
(NIll
'i) Reference] Any cultivation method dξ may be used.
In Honbo 11 Hiki 1) 1, it is advantageous to cultivate in a nutrient solution containing 9 J chloride/Hinomu for 3 to 1 week before harvesting, and this allows for efficient calcium enrichment. Moreover, it does not inhibit the beef nT of Muina. For other cultivation methods, it is not necessarily necessary to increase the calcium/umium chloride content in the culture, but rather it is sufficient to cultivate it in a nutrient solution with a normal calcium content.

Thus, the object of the present invention is to obtain 50% of Tf-na, which contains a high content of Zurkarun-ul.
Green vegetables containing ~150% more Cal/Um are obtained.

[-b] The present invention will be explained in more detail with reference to Examples below. In the following description, 4-fresh weight percentage (%) and dry weight percent 1.(%) are respectively fresh weight,
Weight percent 1. based on dry weight is not shown.

Determination of Minerals in Mullet Vegetables Approximately 100g of vegetables are dried at 105°C for 5 fat intervals, and the dry matter is approx.
get g. This dry matter was crushed into a homogeneous sample, about 1 g of this was taken and heated at 600°C for 5 hours.
After dry ashing, a lanthanum chloride solution for atomic absorption spectrometry was added, and the amount of calcium was measured by atomic absorption spectrometry.

Example 1 Seeds of tsubaki ratana (Tagyui seedlings, Okayama Saratana) were sown on a well-watered urethane mat, germinated, and grown using a hydroponic cultivation device using a nutrient solution (EC, 20) of the garden trial formulation. Using 4
Seedlings were grown for 0 days, and each seedling weighed IOg. Using this bacterium, a nutrient solution (κC, 2.0) of 200. 1st to
Cultivate for 14 days without aeration in a cultivation bed containing a culture solution with chloride added to the concentration (wt%) shown in the table and adjusted to p1 of 55 to 6.5. Approximately 50 to 100 g of Saratana per plant was obtained. The weight of the above-ground part was weighed, dried at 105°C for 5 hours, crushed, and quantitatively analyzed for calcium. The results are shown in Table 1.

”N: 12, P: 4, K: 8, Ca: 4, Mg: 4S
: 4 (in the ratio of me/(!), Fe, B, Zn,
Culture solution containing trace elements of MnCu and Mo.

As shown in the results in Table 1, calcium chloride was added to O.
I. ．． By cultivating in a nutrient solution supplemented with 0.2 and 0.3%, saladana with a high calcium content and good growth condition can be obtained. If a nutrient solution containing 0.4% or more of calcium chloride is used, the calcium content in Saratana can be increased, but the growth condition will be poor.

Example 2 Using saladana seedlings, a nutrient solution (EC2.0) of a garden trial formulation was prepared.
2 (Cultivate while aerating in a cultivation bed containing H!
As shown in Table 2, each plant was cultivated in #liquid containing 0.3% chloride for a certain period of time before harvesting, yielding 80 to 100 g of Saratana per plant. Table 2 shows the results of weighing the above-ground parts and measuring the calcium content in the vegetables.

The seedlings were sown on a urethane mat, germinated, and grown for 40 days using a nutrient solution (EC, 2.0) according to the garden trial recipe using a hydroponic cultivation device, yielding about 12 g of seedlings per plant.

Using this seedling, the nutrient solution (EC, 2.0) 2
00. Add calcium chloride to the concentration shown in Table 1 and add a pH adjuster for hydroponic cultivation (Otsuka Chemical) to adjust the pH to 55 to 6.5. The plant was cultivated for 14 days with aeration, and each plant grew approximately 10
0 to 150 g of Chinese choy were obtained. Two parts of the powder were weighed, dried at 105°C for 5 hours, ground, and quantitatively analyzed for calcium/umium. The results are shown in Table 3.

As shown in the results in Table 2, the chloride power was reduced to 0.
By cultivating vegetables containing 3% calcium for 1 to 2 weeks before harvesting, salatana with high calcium content and good growth conditions can be obtained.

Example 3 Seeds of bok choy (Takii seedlings) were soaked in water.
As the result of
．． By culturing in a nutrient solution containing 1.0.2% and 0.3% concentration, nanokenosa f with good growth condition and high amount of cal/ul/chicken can be obtained. When the concentration of chloride / chloride is 0.4%, the chlorine containing 1 in bok gen → ni is 7N.
However, growth +++t :p; can be seen.

Example 4 NoF. loOi! 95 g of nonoluntum nitrate, 81 g of potassium chloride, sulfuric acid, / 50 g. No. - Phosphoric acid and aluminum 6g, Kirei-1・Iron 3y
,,T6 Yohi A nutrient solution of Shosei Noki in which the microorganisms described in Example 1 was dissolved was obtained (Nutritional solution A).Next, 33 ()g of chloride was added to the nutrient solution A. was added to obtain a nutrient solution (nutrient solution B) for the cultivation of the present invention.

Using a recirculating hydroponic system and using nutrient solution A, lettuce was grown at 50 FI I! ! I XQ culture 1, then nutrient solution I
3 was used for cultivation for two weeks. Thus, each plant weighs approximately 280g.
Kinukyu Lettuce Woi6 % Part 1) Ren Ichinom: fR
C3 It was 8 mg%. -Power, 1. One head of lettuce grown using only nutrient solution A weighed about 300 g during the period described above, and its calcium/um content was less than 17 mg%.

Effects of investigation According to the present invention, green vegetables belonging to specific field floods, that is, oily F-1 or Hiku H, have a calcium/umum content that is 50 to 150% higher than conventional vegetables, and are considered to be vegetables that grow well. ,these! l! F Sakae's nutritional fdIi value can be constantly increased.

Claims (2)

[Claims] (1) Vegetables that belong to the Cruciferae or Asteraceae family and whose calcium content is about 50 to 150% higher than that of field-grown vegetables. (2) A method for enriching vegetables with calcium, which comprises cultivating vegetables of the Arunaceae family or the Asteraceae family hydrostatically with a nutrient solution containing calcium chloride.