JP2531333B2 - Spinach in a packaging container and method for producing the same - Google Patents
Spinach in a packaging container and method for producing the sameInfo
- Publication number
- JP2531333B2 JP2531333B2 JP4195493A JP4195493A JP2531333B2 JP 2531333 B2 JP2531333 B2 JP 2531333B2 JP 4195493 A JP4195493 A JP 4195493A JP 4195493 A JP4195493 A JP 4195493A JP 2531333 B2 JP2531333 B2 JP 2531333B2
- Authority
- JP
- Japan
- Prior art keywords
- spinach
- concentration
- hydroponic
- green color
- packaging container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 235000009337 Spinacia oleracea Nutrition 0.000 title claims description 36
- 238000004806 packaging method and process Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 244000300264 Spinacia oleracea Species 0.000 title 1
- 241000219315 Spinacia Species 0.000 claims description 35
- 239000011701 zinc Substances 0.000 claims description 31
- 229910052700 potassium Inorganic materials 0.000 claims description 21
- 229910052725 zinc Inorganic materials 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 16
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 15
- 239000011591 potassium Substances 0.000 claims description 15
- 238000007796 conventional method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 18
- 238000011156 evaluation Methods 0.000 description 11
- 239000011777 magnesium Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000000007 visual effect Effects 0.000 description 10
- 235000013311 vegetables Nutrition 0.000 description 8
- 230000001954 sterilising effect Effects 0.000 description 7
- 238000004659 sterilization and disinfection Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000003501 hydroponics Substances 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009924 canning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LMSDCGXQALIMLM-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;iron Chemical compound [Fe].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O LMSDCGXQALIMLM-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 101100114828 Drosophila melanogaster Orai gene Proteins 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910004616 Na2MoO4.2H2 O Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- Y02P60/216—
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高温殺菌後においても
生のホウレンソウが有する緑色をそのまま維持する包装
容器入りホウレンソウおよびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinach in a packaging container which maintains the green color of raw spinach even after high temperature sterilization and a method for producing the spinach.
【０００２】[0002]
【従来の技術】ホウレンソウは缶詰にすると、高温殺菌
工程後その緑色が著るしく退色して褐色となるためその
加工利用の範囲は限られていた。缶詰野菜の緑色を保持
する一方法として、特開昭５９−１２００４６号公報に
開示された方法がある。この方法は、野菜を、亜鉛また
は銅イオンを含有する水中で約１５０〜２１２°Ｆの温
度でブランチした後常法により缶詰にするものである。2. Description of the Related Art When spinach is canned, the range of its processing and utilization has been limited, because its green color remarkably fades to brown after high temperature sterilization. As one method for maintaining the green color of canned vegetables, there is a method disclosed in Japanese Patent Laid-Open No. 59-120046. In this method, vegetables are blanched in water containing zinc or copper ions at a temperature of about 150 to 212 ° F. and then canned by a conventional method.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の方法は野菜
の缶詰工程中の加工処理によっていったん失われた緑色
を回復するものであるが、その回復の程度は生の野菜の
緑色を一部とどめる程度であって、生の野菜の緑色には
戻らず、あるいは食品衛生上問題があるなど、消費者の
野菜の色に対する要求を充分満足させるものではない。The above-mentioned conventional method recovers the green color once lost by the processing during the canning process of vegetables, but the degree of the recovery is limited to the green color of raw vegetables. However, it does not return to the green color of raw vegetables, or there is a food hygiene problem, and it does not sufficiently satisfy the consumer's demand for the color of vegetables.
【０００４】本発明の目的は、高温による加熱殺菌後に
おいても生のホウレンソウが有する緑色をほぼそのまゝ
維持する包装容器入りホウレンソウおよびその製造方法
を提供しようとするものである。It is an object of the present invention to provide a spinach in a packaging container and a method for producing the spinach which substantially maintains the green color of raw spinach even after heat sterilization at high temperature.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記目的
を達成するために、種々実験と研究を重ねた結果、水耕
液中のカリウムと亜鉛の濃度を標準組成よりも高い一定
範囲の濃度で組合せてホウレンソウを水耕栽培すると、
加熱殺菌処理後のホウレンソウの緑色が極めて良好であ
ることを発見し、本発明に到達した。The inventors of the present invention have conducted various experiments and researches in order to achieve the above-mentioned object, and as a result, have found that the concentrations of potassium and zinc in a hydroponic solution are higher than a standard composition within a certain range. Hydroponics of spinach in combination with
The present invention was discovered by discovering that the green color of spinach after heat sterilization treatment was extremely good.
【０００６】上記目的を達成する本発明の包装容器入り
ホウレンソウは、水耕液中のカリウムの濃度を標準培養
液組成の２．５〜１０倍とし、亜鉛の濃度を標準培養液
組成の１〜７０倍とした水耕液中において水耕栽培した
ホウレンソウを包装容器に充填密封した後常法により加
熱殺菌してなるものである。In the spinach in the packaging container of the present invention which achieves the above object, the concentration of potassium in the hydroponic liquid is 2.5 to 10 times the composition of the standard culture solution, and the concentration of zinc is 1 to 10 times the composition of the standard culture solution. It is obtained by filling and sealing spinach hydroponically cultivated in a 70-fold hydroponic solution into a packaging container, followed by heat sterilization by a conventional method.
【０００７】また上記目的を達成する本発明の包装容器
入りホウレンソウの製造方法は、水耕液中のカリウム濃
度を標準培養液組成の２．５〜１０倍とし、亜鉛の濃度
を標準培養液組成の１〜７０倍とした水耕液中において
ホウレンソウを水耕栽培し、得られたホウレンソウを包
装容器に充填密封した後常法により加熱殺菌することを
特徴とするものである。In the method for producing spinach in a packaging container of the present invention which achieves the above object, the potassium concentration in the hydroponic solution is 2.5 to 10 times the standard culture solution composition, and the zinc concentration is the standard culture solution composition. The spinach is hydroponically cultivated in a hydroponic solution at a ratio of 1 to 70 times, the obtained spinach is filled and sealed in a packaging container, and then heat sterilized by a conventional method.
【０００８】本発明は、従来の方法のように通常の方法
により育成栽培した野菜を缶詰にする処理工程において
緑色保持のための特殊処理を施すものと異り、ホウレン
ソウの育成栽培の過程において緑色保持のための処理を
施すものであって、収穫されたホウレンソウそのものが
高温殺菌処理によっても緑色を失わない性質を備えてい
ることを特徴とするものである。The present invention is different from the conventional method in which a special treatment for keeping a green color is carried out in a process of canning vegetables grown and cultivated by an ordinary method, unlike a conventional method. It is a treatment for holding and is characterized in that the harvested spinach itself has the property of not losing its green color even when subjected to high temperature sterilization treatment.
【０００９】本発明において、水耕栽培は野菜の種類に
応じた公知の水耕栽培法にしたがい常法により行われる
が、本明細書において、標準培養液組成とはホーグラン
ド溶液を若干修正した次の組成を意味する。なお、カッ
コ内は要素源とその濃度である。In the present invention, hydroponics is carried out by a conventional method according to a known hydroponics method depending on the type of vegetables. In the present specification, Hoagland solution is slightly modified from the standard culture solution composition. It has the following composition: The element sources and their concentrations are shown in parentheses.
【００１０】 Ｎ ８４ｐｐｍ （ＮＨ4 ＮＯ3 ３ｍＭ） Ｐ ３１ｐｐｍ （ＮａＨ2 ＰＯ4 ・２Ｈ2 Ｏ １ｍ
Ｍ） Ｋ １５６ｐｐｍ（Ｋ2 ＳＯ4 ２ｍＭ） Ｃａ １６０ｐｐｍ（ＣａＣｌ2 ・２Ｈ2 Ｏ ４ｍＭ） Ｍｇ ４８ｐｐｍ（ＭｇＳＯ4 ・７Ｈ2 Ｏ ２ｍＭ） Ｆｅ ３ｐｐｍ（Ｆｅ−ＥＤＴＡ） Ｂ ０．５ｐｐｍ（Ｈ3 ＢＯ3 ） Ｍｎ ０．５ｐｐｍ（ＭｎＣｌ2 ・４Ｈ2 Ｏ） Ｚｎ ０．０５ｐｐｍ（ＺｎＳＯ4 ・７Ｈ2 Ｏ） Ｃｕ ０．０２ｐｐｍ（ＣｕＳＯ4 ・５Ｈ2 Ｏ） Ｍｏ ０．０１ｐｐｍ（Ｎａ2 ＭｏＯ4 ・２Ｈ2 Ｏ） ｐＨ ５．８[0010] N 84ppm (NH 4 NO 3 3mM ) P 31ppm (NaH 2 PO 4 · 2H 2 O 1m
M) K 156 ppm (K 2 SO 4 2 mM) Ca 160 ppm (CaCl 2 · 2H 2 O 4 mM) Mg 48 ppm (MgSO 4 · 7H 2 O 2 mM) Fe 3 ppm (Fe-EDTA) B 0.5 ppm (H 3 BO 3 ). Mn 0.5 ppm (MnCl 2 .4H 2 O) Zn 0.05 ppm (ZnSO 4 .7H 2 O) Cu 0.02 ppm (CuSO 4 .5H 2 O) Mo 0.01 ppm (Na 2 MoO 4 .2H 2 O) pH 5.8
【００１１】本発明は、上記標準培養液組成中のカリウ
ムの濃度を上記濃度の２．５〜１０倍とし、亜鉛の濃度
を上記濃度の１〜７０倍とした水耕液中でホウレンソウ
を育成栽培するものである。水耕液のカリウムおよび亜
鉛以外の成分の種類および濃度は原則として上記標準培
養液組成のものを使用するが、これに厳密に限定される
ものではなく、カリウムおよび亜鉛以外の成分の種類お
よび濃度を１／３倍から３倍程度変更して使用しても加
熱後のホウレンソウの緑色保持の目的は阻害されないこ
とが実験の結果判明している。したがってカリウムおよ
び亜鉛以外の成分の種類および濃度が上記標準培養液組
成と多少異る水耕液であっても、その変更が緑色保持を
阻害しない程度のものであり、かつカリウムおよび亜鉛
の濃度が本明細書の特許請求の範囲に記載された範囲に
含まれるものは本発明の範囲に含まれるものである。According to the present invention, spinach is grown in a hydroponic solution in which the concentration of potassium in the standard culture solution composition is 2.5 to 10 times the above concentration and the concentration of zinc is 1 to 70 times the above concentration. It is cultivated. In principle, the type and concentration of components other than potassium and zinc in the hydroponic medium are those of the above standard culture solution composition, but are not strictly limited to these, and the types and concentrations of components other than potassium and zinc are used. It has been found as a result of experiments that the purpose of keeping the green color of the spinach after heating is not impaired even if the value is changed from 1/3 to 3 times. Therefore, even if the type and concentration of components other than potassium and zinc are slightly different from the above standard culture solution composition, the change does not hinder the green retention, and the concentration of potassium and zinc is What is included in the scope of the claims of the present specification is included in the scope of the present invention.
【００１２】カリウムと亜鉛の濃度は重要であり、これ
らの濃度が上記範囲未満であるか上記範囲を超えると、
いずれの場合も加熱後のホウレンソウの葉色は暗緑色と
なり、良好な緑色を得ることができない。The concentrations of potassium and zinc are important, and if these concentrations are below or above the above range,
In either case, the leaf color of the spinach after heating becomes dark green and a good green color cannot be obtained.
【００１３】本発明はホウレンソウの缶詰のほかレトル
トパウチ等の包装容器入りホウレンソウにも適用するこ
とができる。The present invention can be applied not only to canned spinach but also to spinach in a packaging container such as a retort pouch.
【００１４】[0014]
【発明の効果】本発明によれば、水耕液中のカリウムお
よび亜鉛の濃度を標準培養液組成よりも高い一定範囲の
濃度とした水耕液中においてホウレンソウを水耕栽培す
ることにより、得られたホウレンソウは１２０℃、４分
の加熱殺菌直後の緑色が極めて良好であり、かつその良
好な緑色は冷蔵庫内貯蔵で実用上充分な期間保持するこ
とができる。INDUSTRIAL APPLICABILITY According to the present invention, spinach is hydroponically cultivated in a hydroponic solution in which the concentration of potassium and zinc in the hydroponic solution is set to a concentration higher than the standard culture solution composition. The resulting spinach has a very good green color immediately after heat sterilization at 120 ° C. for 4 minutes, and the good green color can be stored for a practically sufficient period in storage in a refrigerator.
【００１５】[0015]
【実施例】ホウレンソウの葉についてカリウムおよび亜
鉛を数レベルの濃度で組合せた試験区を設けて水耕栽培
し、加熱後の葉の緑色を観察した。[Examples] Spinach leaves were hydroponically cultivated in a test plot in which potassium and zinc were combined at several levels of concentration, and the green color of the leaves after heating was observed.
【００１６】１．実験材料および方法 （１）供試材料 品種「オーライ」を供試した。種子をパーライトを詰め
た小型ポリポット（直径６ｃｍ、深さ５．５ｃｍ）に１
粒づつ播き、発芽後は標準の１／３倍濃度の水耕液で育
苗した。本葉４枚程度になった時に、水耕ポット（１／
２，０００ａワグナーポット、１２Ｌ入り）に２株づつ
移植し、２０日間程度標準の１／３倍濃度の水耕液で馴
化栽培した後、１か月間下記の水耕液で栽培し、収穫し
て、加熱処理した。1. Experimental Materials and Methods (1) Test Material A variety "Orai" was tested. 1 small seed pot filled with perlite (diameter 6 cm, depth 5.5 cm)
The seeds were sown one by one, and after germination, the seedlings were raised with a hydroponic solution having a concentration 1/3 of the standard. When there are about 4 true leaves, hydroponic pot (1 /
2,000a Wagner pot, containing 12L), 2 strains each were transplanted, cultivated for 20 days in a standard hydroponic solution at a concentration 1/3 the standard, and then cultivated in the following hydroponic solution for 1 month and then harvested. And heat treated.
【００１７】（２）水耕液 上記標準培養液組成のうち、カリウム（以下Ｋと表示）
を標準の１／５倍、１倍（標準）、５倍、１０倍濃度と
し、それぞれに亜鉛（以下Ｚｎと表示）の１倍（標
準）、２５倍、５０倍濃度を組み合わせて水耕栽培し
た。例えば、Ｋ濃度を標準の５倍とＺｎ濃度を標準の５
０倍に組み合わせた場合、以下にＫ５＋Ｚｎ５０で表
す。この際、他の要素は標準濃度のままである。また、
Ｍｇ、Ｋ、Ｚｎ濃度を組み合わせた処理区も設けた。(2) Hydroponic solution Of the above standard culture solution composition, potassium (hereinafter referred to as K)
Is 1/5 times, 1 times (standard), 5 times and 10 times the concentration of standard, and each is combined with 1 times (standard), 25 times and 50 times concentration of zinc (hereinafter referred to as Zn) and hydroponics. did. For example, the K concentration is 5 times the standard and the Zn concentration is 5 times the standard.
When combined 0 times, it is represented by K5 + Zn50 below. At this time, the other elements remain at the standard concentrations. Also,
A treatment section combining the Mg, K, and Zn concentrations was also provided.
【００１８】（３）加熱方法 成葉１葉を皺ができないように広げて透明レトルトパウ
チに詰め、バキュームパックした後、レトルト中で１２
０℃、４分間蒸気加熱した。(3) Heating method One adult leaf is spread out so as not to wrinkle, packed in a transparent retort pouch, vacuum packed, and then 12 in the retort.
Steam heating was performed at 0 ° C. for 4 minutes.
【００１９】（４）緑色の測定 加熱後、葉がレトルトパウチにパックされたままの状態
で、色差計によるａ値の測定および視覚評価を行った。
視覚評価は５点法で評価し、５点：生葉の緑色、４点：
鮮やかな緑色、３点：比較的良好な緑色で、商品として
の限界の緑色、２点：褐緑色（不良）、１点：褐色（不
良）で表した。(4) Measurement of green color After heating, leaves were packed in a retort pouch, and a value was measured by a color difference meter and visually evaluated.
The visual evaluation was made by a 5-point method, 5 points: green of green leaves, 4 points:
Bright green, 3 points: comparatively good green, green as the limit as a product, 2 points: brown green (poor), 1 point: brown (poor).
【００２０】（５）貯蔵方法 加熱後、冷蔵庫で貯蔵し、４日毎に緑色を測定した。(5) Storage method After heating, the sample was stored in a refrigerator and the green color was measured every four days.
【００２１】２．実験結果 ＫとＺｎを組み合わせた水耕液で栽培したホウレンソウ
の加熱直後と冷蔵貯蔵中の緑色について、視覚評価を表
１に、色差計ａ値を表２に示す。2. Experimental Results Visual evaluation is shown in Table 1 and a color difference meter a value is shown in Table 2 immediately after heating spinach cultivated in a hydroponic solution in which K and Zn are combined and green color during refrigerated storage.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【表２】 [Table 2]
【００２４】全般的にみると、Ｋが低濃度の場合（Ｋ１
／５、Ｋ１）、Ｚｎが高濃度であっても、加熱直後の葉
は暗緑色を呈し、視覚評価は低かった。一方、Ｋ５倍ま
たはＫ１０倍にＺｎ２５倍またはＺｎ５０倍を組合せた
区の緑色は良好で、加熱直後の視覚評価は３となった。
特に、Ｋ５＋Ｚｎ５０区は加熱直後の良好な緑色が冷蔵
８日間保持された。その他に、Ｋ５＋Ｚｎ２５区、Ｋ１
０＋Ｚｎ１区、Ｋ１０＋Ｚｎ２５区、Ｋ１０＋Ｚｎ５０
区も加熱直後の緑色は良好で、その良好さは冷蔵４日間
保持された。ただし、ホウレンソウは冷蔵保存期間は短
く、Ｋ５＋Ｚｎ５０区の葉でも冷蔵１６日後にはオリー
ブ色に変わった。Ｋ２．５＋Ｚｎ５０区は加熱直後は良
好であった。Overall, when K is at a low concentration (K1
/ 5, K1), Zn had a dark green color immediately after heating even with a high concentration, and the visual evaluation was low. On the other hand, the green color of the section in which K5 times or K10 times was combined with Zn25 times or Zn50 times was good, and the visual evaluation immediately after heating was 3.
Particularly, in the area of K5 + Zn50, a good green color immediately after heating was maintained for 8 days in refrigeration. Besides, K5 + Zn25 ward, K1
0 + Zn1 section, K10 + Zn25 section, K10 + Zn50
In the plot as well, the green color immediately after heating was good, and the goodness was maintained for 4 days in refrigeration. However, spinach had a short refrigeration storage period, and even leaves of the K5 + Zn50 group turned olive-colored after 16 days of refrigeration. The area of K2.5 + Zn50 was good immediately after heating.
【００２５】なお、以前の実験から、Ｋ５倍とＺｎ１０
０倍の組合せ、Ｋ１０倍とＺｎ１００倍の組合せでは加
熱後の葉は暗緑色となり、良好な緑色を得ることができ
なかった。全般的にみて、Ｚｎが７０倍を越えるとホウ
レンソウは本来の生育をせず、収量が半減する。From the previous experiment, K5 times and Zn10
In the case of the combination of 0 times and the combination of K10 times and Zn100 times, the leaves after heating became dark green and a good green color could not be obtained. In general, when Zn exceeds 70 times, spinach does not grow as expected and the yield is reduced by half.
【００２６】色差計ａ値は、Ｋが低濃度の場合、Ｚｎ濃
度が高くなると−ａ値が大きくなったが（緑色が多いこ
とを示す）、Ｋが標準濃度以上の場合は−ａ値は高くな
るものの、Ｚｎ濃度の影響は見られなくなった。このこ
とから、一般的には、ＫもＺｎも加熱後の葉の−ａ値を
高め、緑色を保持する作用があると推察された。ところ
で、視覚評価の低いＫ１／５＋Ｚｎ５０区やＫ１＋Ｚｎ
２５区、Ｋ１＋Ｚｎ５０区の−ａ値は、視覚評価の高い
Ｋ５＋Ｚｎ５０区に比べて、大きく、より緑色を呈する
はずであり、視覚評価とａ値の間に矛盾が生じている。
この要因として、測定上の問題もあり得るが、視覚評価
の低い区の葉が呈する暗緑色が影響したと考えられる。
緑色は残存するものの暗緑色のため視覚評価の評価点が
下がったものと考えられる。As for the a value of the color difference meter, when the concentration of K was low, the value of -a increased with increasing Zn concentration (indicating that the amount of green color was large), but when K was above the standard concentration, the value of -a was reduced. Although it increased, the effect of Zn concentration disappeared. From this, it was generally inferred that both K and Zn have the action of increasing the -a value of the leaf after heating and maintaining the green color. By the way, K1 / 5 + Zn50 and K1 + Zn, which have low visual evaluation,
The -a values of the 25th section and the K1 + Zn50 section should be larger and more green than the K5 + Zn50 section with high visual evaluation, and a contradiction occurs between the visual evaluation and the a value.
As a cause of this, there may be a problem in measurement, but it is considered that the dark green color exhibited by the leaves with low visual evaluation had an effect.
Although the green color remains, it is considered that the evaluation point of visual evaluation is lowered because of the dark green color.
【００２７】また、マグネシウム（以下Ｍｇと表示）は
クロロフィルの構成成分であることから、Ｍｇを多量施
把すれば緑色保持に効果があるのではないかと考えられ
た。そこでＭｇとＫ、Ｚｎを組み合わせた水耕液でホウ
レンソウを栽培し、加熱後の緑色を調べた。その結果を
参考例として表３（視覚評価）と表４（色差計ａ値）に
示す。Further, since magnesium (hereinafter referred to as Mg) is a constituent component of chlorophyll, it was thought that a large amount of Mg may be effective in maintaining the green color. Therefore, spinach was cultivated with a hydroponic solution in which Mg, K, and Zn were combined, and the green color after heating was examined. The results are shown in Table 3 (visual evaluation) and Table 4 (color difference meter a value) as reference examples.
【００２８】[0028]
【表３】 [Table 3]
【００２９】[0029]
【表４】 [Table 4]
【００３０】上記ＭｇとＫ、Ｚｎを組合せた実験では、
Ｍｇ高濃度の有効性は認められなかった。むしろ逆に、
Ｍｇ高濃度によりホウレンソウのｐＨは若干低下し、−
ａ値も小さくなった。これは、おそらく、ＭｇとＫとの
拮抗作用によるもので、高濃度のＭｇが根によるＫの吸
収を抑制し、その結果、Ｋの緑色保持作用が抑制された
と思われる。In the experiment combining Mg, K and Zn,
The effectiveness of high Mg concentration was not observed. On the contrary,
Due to the high concentration of Mg, the pH of spinach was slightly lowered,
The a value also became smaller. This is probably due to the antagonism between Mg and K, and it is considered that high concentration of Mg suppressed the absorption of K by roots, and as a result, the green-retaining effect of K was suppressed.
【００３１】以上の実験の結果、水耕液のＫを標準培養
液組成の２．５〜１０倍濃度とし、Ｚｎを標準培養液組
成の１〜７０倍濃度でホウレンソウを栽培すれば、ホウ
レンソウの加熱後の緑色を保持することが可能であるこ
とが判った。また加熱後の緑色を特に良好に保つために
は、Ｋを標準の５〜１０倍濃度、Ｚｎを標準の２５〜５
０倍濃度に栽培することが望ましいことも判った。As a result of the above experiment, if K of the hydroponic solution is 2.5 to 10 times the concentration of the standard culture solution and Zn is cultivated at the concentration of 1 to 70 times the standard culture solution composition, spinach It has been found possible to retain the green color after heating. To keep the green color particularly good after heating, K is 5 to 10 times more concentrated than standard, and Zn is 25 to 5 standard.
It was also found that it is desirable to cultivate at 0 times the concentration.
Claims (3)
組成の２．５〜１０倍とし、亜鉛の濃度を標準培養液組
成の１〜７０倍とした水耕液中において水耕栽培したホ
ウレンソウを包装容器に充填密封した後常法により加熱
殺菌してなる包装容器入りホウレンソウ。1. Hydroponic culture in a hydroponic solution in which the concentration of potassium in the hydroponic solution is 2.5 to 10 times that of the standard culture solution and the concentration of zinc is 1 to 70 times that of the standard culture solution composition. Spinach in a packaging container, which is obtained by filling and sealing the above spinach into a packaging container and then heat-sterilizing by a conventional method.
成の２．５〜１０倍とし、亜鉛の濃度を標準培養液組成
の１〜７０倍とした水耕液中においてホウレンソウを水
耕栽培し、得られたホウレンソウを包装容器に充填密封
した後常法により加熱殺菌する包装容器入りホウレンソ
ウの製造方法。2. Spinach is hydroponic in a hydroponic solution in which the potassium concentration in the hydroponic solution is 2.5 to 10 times that of the standard culture solution and the concentration of zinc is 1 to 70 times that of the standard culture solution composition. A method for producing spinach in a packaging container, which comprises cultivating, filling and sealing the obtained spinach in a packaging container, and then heat-sterilizing by a conventional method.
成の２．５〜１０倍とし、亜鉛の濃度を標準培養液組成
の１〜７０倍とした水耕液中において水耕栽培したホウ
レンソウ。3. Hydroponic culture was carried out in a hydroponic solution in which the potassium concentration in the hydroponic solution was 2.5 to 10 times the standard culture solution composition and the zinc concentration was 1 to 70 times the standard culture solution composition. Spinach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195493A JP2531333B2 (en) | 1993-02-05 | 1993-02-05 | Spinach in a packaging container and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195493A JP2531333B2 (en) | 1993-02-05 | 1993-02-05 | Spinach in a packaging container and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06225691A JPH06225691A (en) | 1994-08-16 |
| JP2531333B2 true JP2531333B2 (en) | 1996-09-04 |
Family
ID=12622597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4195493A Expired - Lifetime JP2531333B2 (en) | 1993-02-05 | 1993-02-05 | Spinach in a packaging container and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531333B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6764735B2 (en) | 1998-06-22 | 2004-07-20 | Target Technology Company, Llc | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| US6852384B2 (en) | 1998-06-22 | 2005-02-08 | Han H. Nee | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| US7045187B2 (en) | 1998-06-22 | 2006-05-16 | Nee Han H | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| US6007889A (en) | 1998-06-22 | 1999-12-28 | Target Technology, Llc | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| US6544616B2 (en) | 2000-07-21 | 2003-04-08 | Target Technology Company, Llc | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| US6790503B2 (en) | 1998-06-22 | 2004-09-14 | Target Technology Company, Llc | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| JP4792587B2 (en) * | 2006-09-08 | 2011-10-12 | 公立大学法人秋田県立大学 | Low potassium spinach and its cultivation method |
| JP6422188B2 (en) * | 2015-09-28 | 2018-11-14 | 公立大学法人秋田県立大学 | Hydroponic cultivation method, leaf vegetable production method, culture solution, and culture solution production method. |
-
1993
- 1993-02-05 JP JP4195493A patent/JP2531333B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06225691A (en) | 1994-08-16 |
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