JP2004073051A - Iron-enriched rice or iron-enriched wheat - Google Patents

Iron-enriched rice or iron-enriched wheat Download PDF

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JP2004073051A
JP2004073051A JP2002236169A JP2002236169A JP2004073051A JP 2004073051 A JP2004073051 A JP 2004073051A JP 2002236169 A JP2002236169 A JP 2002236169A JP 2002236169 A JP2002236169 A JP 2002236169A JP 2004073051 A JP2004073051 A JP 2004073051A
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iron
rice
wheat
reinforced
enriched
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JP4077272B2 (en
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Toshihiro Ito
伊藤 俊宏
Noboru Sakaguchi
坂口 騰
Raju Juneja Reka
レカ・ラジュ・ジュネジャ
Nagahiro Yamazaki
山崎 長宏
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Taiyo Kagaku KK
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Taiyo Kagaku KK
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain iron-enriched rice or iron-enriched wheat which is industrially safe, simply produced by one coating process and controls the outflow iron and vitamins attached to the surface of rice grain and wheat grain and activity reduction of vitamins by iron in ordinary rice washing with water and is stable. <P>SOLUTION: The iron-enriched rice or iron-enriched wheat is obtained by coating rice grain or wheat grain with a mixture comprising an iron salt, a polyglycerol fatty acid ester and a hardened oil. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、鉄が強化された米又は麦に関し、水による通常の米研ぎ(水洗い)において、米や麦表面に付着させた鉄分の流出が低減された安定な鉄強化米又は鉄強化麦に関するものである。
【0002】
【従来の技術】
米飯を主食とする日本国の食生活において、近年、主食として米以外にパン等の小麦製品が食されるようになり、また、インスタント加工食品が広く利用されるようになった。その結果、栄養のバランスが偏り、人の健康に与える影響が社会的問題となってきた。このような栄養のアンバランスを補う方法として、特に、米の表面にビタミンB及びその他の不足しがちな水溶性ビタミンや脂溶性ビタミン類、その他の栄養素を添加補強した強化精米等が市販され、広く食用されるようになった。
【0003】
そのような強化は、例えば、原料精米又は原料精麦を、強化栄養素を溶解した酸性溶液に浸漬した後、短時間蒸煮して栄養素を含有させ、熱風乾燥する方法や、水に溶けない脂溶性栄養素はこれを乳化し、水溶性のビタミンやカルシウム,鉄等のミネラル栄養素は、強化したいそれぞれの適量を混合し水溶液として、又は上記乳化液中に加えて、それらの栄養素を、例えば、流動造粒機,遠心式流動コーティング造粒機等を利用して精米等の表面にコーティングし、乾燥する方法等により製造され、提供されている。しかし、このようにして付着強化された栄養素は、米等を炊く前の水洗いにおいて、かなりの量が流れ出しロスとなるという問題が避けられなかった。これを防止するためには、無洗米(米等を炊く前の水洗いが不要とした米)用として加工する以外では、水洗いで容易に付着栄養素が水相に移行しないように固定することが望ましいが、実用的に有効な被覆方法はまだ見出されていないのが現状である。また、ツエインやセラックを被覆する方法では、大がかりな製造設備が必要となるため、これまで工業的に採用されていないのが実情である。
【0004】
特公平5−30426(特開昭59−130157)に記載されている油脂類及びロウ類の乳化物を被覆する方法では、ロウ類を用いるため、風味が低下するという問題があった。
また、特開平8−56593に記載されているエタノールを用いる方法は、エタノールに可溶性のものしかコーティング剤として使用できず、コーティングする際に使用するエタノールに引火する危険性がある等の問題があった。
また、いずれの方法によっても、栄養素を安定化させるには、栄養素を被覆した上で固定化のための被覆を行うという2段階の工程で行う必要があり、非常に手間のかかるものであった。
【0005】
【発明が解決しようとする課題】
本発明の課題は、工業的に安全で、1回の被覆工程で簡単に製造可能な、水による通常の米研ぎ(水洗い)において、米粒や麦粒表面に付着させた鉄分の流出が低減された安定な鉄強化米又は鉄強化麦を提供することにある。
【0006】
【課題を解決するための手段】
本願発明者らは、鉄塩、ポリグリセリン脂肪酸エステル及び硬化油を含有する混合物を、米粒又は麦粒に被覆することにより、工業的に安全で、1回の被覆工程で簡単に製造可能な、米研ぎ時における鉄分の流出が抑制された安定な鉄強化米又は鉄強化麦を提供できることを見出し、本発明を完成させた。
【0007】
【発明の実施の形態】
本願発明における米とは、その種類については特に限定されるものではなく、粳米、餅米、陸稲、インディカ米、ジャワニカ米等のいずれでも良く、また、その搗精度合いにも限定されるものではなく、精白米、胚芽精米、七分搗き米、五分搗き米、玄米等のいずれでも良い。
本願発明における麦とは、その種類については特に限定されるものではなく、大麦、パン小麦、クラブ小麦、デュラム小麦、はと麦、燕麦、ライ麦等のいずれでも良く、また、その搗精度合いや形状にも限定されるものではなく、押麦、白麦、米粒麦等のいずれでも良い。
【0008】
本願発明における鉄塩とは、特に限定されるものではなく、ピロリン酸第二鉄、クエン酸第二鉄、クエン酸第一鉄ナトリウム、硫酸第一鉄、グルコン酸第二鉄、乳酸鉄、水酸化第二鉄、塩化第二鉄、フマル酸第一鉄、三二酸化鉄、スレオニン鉄を、単体で、又は複数組み合わせて用いることができるが、鉄分の米研ぎ時における流出抑制の面より、ピロリン酸第二鉄、フマル酸第一鉄、スレオニン鉄等の水に不溶性の鉄塩が好ましく、色調や風味の面も鑑み、最も好ましくは、ピロリン酸第二鉄である。なお、ここでいう不溶性とは、第七版食品添加物公定書通則29の試験法において「極めて溶けにくい」又は「ほとんど溶けない」に該当するものをいい、好ましくは「ほとんど溶けない」に該当するものである。
【0009】
鉄塩の平均粒径については、特に限定するものではないが、好ましくはレーザー回折型粒度分布測定による平均粒径が2μm以下、更に好ましくは1μm以下、最も好ましくは0.5μm以下である。平均粒子径がこれよりも大きなものを利用した場合は、米粒又は麦粒に被覆する際により均一な被覆ができない場合がある。この平均粒径の鉄塩を得る方法としては、中和造塩による方法(特許第3050921号)や、ジェットミル等の乾式粉砕機や、コボールミルやダイノミル等の湿式粉砕機により粉砕する方法が挙げられ、ポリグリセリン脂肪酸エステル及び硬化油中で湿式粉砕機により粉砕する方法が、粉砕と均一混合分散が同時にできるため好ましい。
【0010】
本願発明におけるポリグリセリン脂肪酸エステルとは、ポリグリセリンと脂肪酸とのエステルをいい、これを構成するポリグリセリンの平均重合度や脂肪酸の種類、エステル化率については、特に限定されるものではない。親水基と親油基の分子量比より算定されるHLBは5以下が好ましく、4以下が更に好ましい。ポリグリセリン脂肪酸エステルを構成するポリグリセリンの平均重合度は、3以上が好ましく、3〜11が更に好ましい。ポリグリセリン脂肪酸エステルを構成する脂肪酸は、炭素数が8〜20である飽和又は不飽和の直鎖又は分枝鎖中に水酸基を有する脂肪酸又は、縮合リシノレイン酸が好ましく、縮合リシノレイン酸が更に好ましい。
具体的には、ヘキサステアリン酸ヘキサグリセリン、オクタステアリン酸ヘキサグリセリン、縮合リシノレイン酸ヘキサグリセリン、縮合リシノレイン酸ペンタグリセリンより選ばれる1種又は2種以上が好ましく、縮合リシノレイン酸ヘキサグリセリン、縮合リシノレイン酸ペンタグリセリンより選ばれる1種又は2種以上が更に好ましい。
また、本願発明において、ポリグリセリン脂肪酸エステル以外の食品用乳化剤を併用しても良い。食品用乳化剤としては、例えばショ糖脂肪酸エステル、グリセリン脂肪酸エステル、プロピレングリコール脂肪酸エステル及びソルビタン脂肪酸エステル、レシチン、酵素分解レシチン等が挙げられる。
【0011】
本願発明における硬化油とは、常温で溶融しないものであれば、特に限定するものではなく、1種類のみの使用に限らず、2種以上を併用しても良い。通常、融点が30℃以上の油脂であり、好ましくは、融点が35℃以上の油脂である。例えば、大豆硬化油、綿実硬化油、菜種硬化油、ヤシ硬化油、米硬化油、トウモロコシ硬化油等の植物性硬化油や、牛脂、豚脂等の動物油脂及びこれらに水素添加して得られる動物性硬化油等が挙げられ、食味等への影響の面より、植物性硬化油が好ましい。
【0012】
鉄塩の添加量は特に限定するものではなく、所望の強化割合に応じて、鉄塩の種類によって適宜調整できる。通常、硬化油100重量部に対して1〜100重量部配合すると良い。添加量の下限値としては、好ましくは硬化油100重量部に対して10重量部であり、更に好ましくは25重量部である。鉄塩の添加量がこの割合未満の場合は、鉄分の強化のために多量の混合物を必要とするので実用的ではなくなる。添加量の上限値としては、好ましくは、硬化油100重量部に対して90重量部であり、更に好ましくは75重量部である。鉄塩の添加量がこの割合より多い場合には鉄塩の硬化油による被覆が不十分となり、鉄塩が米研ぎの際に溶出し易くなる。
【0013】
ポリグリセリン脂肪酸エステルの添加量は特に限定するものではないが、通常、硬化油100重量部に対して0.1〜100重量部配合すると良い。添加量の下限値としては、好ましくは硬化油100重量部に対して1重量部であり、更に好ましくは5重量部である。ポリグリセリン脂肪酸エステルの添加量がこの割合未満の場合は、鉄塩を十分に分散させることが困難となり実用的ではなくなる。添加量の上限値としては、好ましくは、硬化油100重量部に対して50重量部であり、更に好ましくは20重量部である。ポリグリセリン脂肪酸エステルの添加量がこの割合より多い場合には米研ぎの際に、乳化転相により内包する成分の溶出が生じ易くなる。
【0014】
本願発明において、米又は麦に強化される素材としては、鉄のみに限定されるものではなく、他の素材も強化できる。鉄塩と共に強化できる素材としては、ビタミンA、ビタミンB、ビタミンB、ビタミンB、ビタミンB12、ビタミンC、ビタミンD、ビタミンE、ナイアシン(ニコチン酸)、パントテン酸、葉酸等のビタミン類、リジン、スレオニン、トリプトファン等の必須アミノ酸類や、カルシウム、マグネシウム等の鉄以外のミネラル類及び、例えば、α−リノレン酸、EPA、DHA、月見草油、オクタコサノール、カゼインホスホペプチド(CPP)、カゼインカルシウムペプチド(CCP)、食物繊維、オリゴ糖等の人の健康に寄与する物質類、その他食品添加物として認可されている有用物質の1種又は2種以上が使用できる。
【0015】
これら素材の添加量は、所望の強化に応じて、適宜、栄養素の種類及びそれぞれの添加量が選択的に付着強化されるが、例えば、ビタミンB1 は、米100g当たり100〜150mgを含むように以前制定されていた特殊栄養食品の基準量を参考にすることができる。また、国民栄養調査の結果の資料を参考に、不足分を補う様に強化することもできる。又は米等を元の玄米等の栄養価レベルに一致するように高めてもよい。これらは、鉄塩と同時に、ポリグリセリン脂肪酸エステル及び硬化油と混合し、米粒又は麦粒に被覆すれば良い。
【0016】
これらの内、油溶性素材に関しては、硬化油に溶かせば良い。油に不溶性の素材については、鉄塩と同様、好ましくは、レーザー回折型粒度分布測定による平均粒子径が2μm以下、更に好ましくは、平均粒子径が1μm以下、最も好ましくは、0.5μm以下になるように粉砕すると、米粒又は麦粒に被覆する際により均一な被覆が可能となるので望ましい。この粉砕は、上述の鉄塩と同様、湿式粉砕機により粉砕する方法が良く、鉄塩と同時に粉砕機にかけて、粉砕すれば良い。
【0017】
本願発明の強化米又は強化麦を製造する方法は、鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物を、米粒又は麦粒に被覆すれば良い。その際、鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物をそのまま用いても良いし、水に乳化させた乳化液として用いても良いが、そのまま用いることが乾燥等の工程が不要であるため好ましい。
本願発明において、米粒又は麦粒に、鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物を、米粒又は麦粒に被覆する方法は、米粒又は麦粒を均一に被覆できる方法であれば特に限定されるものではなく、例えば、回転させたコーティングパンに米又は麦を投入し、熱風を送りながら鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物を噴霧して被覆する方法、同様の操作を流動造粒機中で行う方法等が挙げられる。中でも、より均一な被覆が可能である噴霧コーティングによる方法が好ましい。
本被覆液には、できあがりの強化米又は強化麦の着色を目的として、ビタミンB、β−カロチン、クチナシ色素等の色素を添加しても良い。
【0018】
本願発明の強化米又は強化麦は、米飯類を炊飯・調理する際に通常の米又は麦に添加混合して、又は、強化米又は強化麦単独で用いることができる。通常の米又は麦に添加混合する割合については、特に限定するものではなく、強化米又は強化麦の栄養素の強化度合いや、米飯類へ栄養素を強化しようとする量によって任意に設定可能である。添加混合で使用する場合、米又は麦100重量部に対し通常、0.01〜10重量部、好ましくは、0.1〜2重量部、本願発明の強化米又は強化麦を添加混合すれば良い。
なお、ここでいう米飯類とは、白飯、赤飯、粥、雑炊、ピラフ、炒飯、ドリア、リゾット、麦飯、オートミール等、米及び/又は麦を炊飯・調理したもののことである。
【0019】
次に実施例、比較例及び試験例を挙げ、本発明を更に詳しく説明するが、本発明はこれら実施例等に何ら制約されるものではない。
【実施例】
実施例1.鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物の調製(1)
ピロリン酸第二鉄30g、縮合リシノレイン酸ヘキサグリセリン(サンソフト818H;HLB=1:太陽化学(株)製)8g、ヤシ硬化油(融点36℃)62gを混合し、これをコボールミル(神鋼パンテック株式会社製)を用いて粉砕均一混合し、混合物A96gを得た。
鉄塩のレーザー回折型粒度分布測定による平均粒子径は、0.4μmであった。
【0020】
実施例2.鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物の調製(2)
硫酸第一鉄7水和物30g、縮合リシノレイン酸ヘキサグリセリン(サンソフト818H;HLB=1:太陽化学(株)製)8g、ヤシ硬化油(融点36℃)62gを混合し、これをコボールミル(神鋼パンテック株式会社製)を用いて粉砕均一混合し、混合物B96gを得た。
鉄塩のレーザー回折型粒度分布測定による平均粒子径は、0.4μmであった。
【0021】
実施例3.鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物の調製(3)
ピロリン酸第二鉄30g、縮合リシノレイン酸ヘキサグリセリン(サンソフト818H;HLB=1:太陽化学(株)製)8g、ヤシ硬化油(融点36℃)62gをホモミキサーで均一混合し、混合物C94gを得た。
鉄塩のレーザー回折型粒度分布測定による平均粒子径は、3.5μmであった。
【0022】
実施例4.鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物の調製(4)
ヨウ化カリウム2g、ビタミンB塩酸塩30g、ナイアシン266g、ビタミンB1228mg、葉酸3gを混合し、ビタミンプレミックスを調製した。
ピロリン酸第二鉄20g、縮合リシノレイン酸ヘキサグリセリン(サンソフト818H;HLB=1:太陽化学(株)製)7g、酵素分解レシチン(サンレシチンA:太陽化学(株)製)1g、ヤシ硬化油(融点36℃)54.2g、上記のビタミンプレミックス15g、ビタミンAパルミテート(100万単位/g)2.5g、カゼインカルシウムペプチド(CCP:太陽化学(株)製)0.3gを混合し、これをダイノーミル(株式会社シンマルエンタープライゼス製)を用いて粉砕均一混合し、混合物D96gを得た。
混合物中の鉄塩を含む固形分のレーザー回折型粒度分布測定による平均粒子径は、0.3μmであった。
【0023】
実施例5.鉄強化米の調製(1)
精白米600gをコーティングパンに入れ、コーティングパンを回転させながら、常温の風を送り、実施例1で得られた混合物A20.6gを60℃に保ちながら2.5g/分の速度で噴霧してコーティングを行い、本願発明の鉄強化米E620gを得た。
【0024】
実施例6.鉄強化米の調製(2)
被覆液として実施例2で得られた混合物B31gを噴霧する以外は実施例5と同様にして本願発明の鉄強化米F630gを得た。
【0025】
実施例7.鉄強化米の調製(3)
被覆液として実施例3で得られた混合物C20.6gを噴霧する以外は実施例5と同様にして本願発明の鉄強化米G620gを得た。
【0026】
実施例8.鉄強化米の調製(4)
被覆液として実施例4で得られた混合物D31gを噴霧する以外は実施例5と同様にして本願発明の鉄強化米H630gを得た。
【0027】
比較例1.鉄塩−油脂の2段階被覆米の調製
精白米600gをコーティングパンに入れ、コーティングパンを回転させながら、熱風を送り、ピロリン酸第二鉄6.2gを脱イオン水200mlに分散した液を5ml/分の速度で噴霧してコーティングを行った。溶液を噴霧し終わった後も熱風を送り続けて水分10%になるまで乾燥後、送風を冷風にし、30℃まで冷却した。次いで、送風を常温にし、ヤシ硬化油(融点36℃)13.8gを60℃に保ちながら2.5g/分の速度で噴霧してコーティングを行い、比較品の鉄強化米I620gを得た。
【0028】
試験例1.洗米による鉄分の流出試験
本願発明及び比較品の鉄強化米E〜I各1gを、それぞれ精白米200gに混合して試料米とした。それぞれの試料米に250mlの水道水を加え、1分間に約30回転の速さでもみほぐす様に水洗し、水切りする作業を4回繰り返した。水切りされた水を集め、その水中に含まれる鉄の量を原子吸光光度法で測定し、鉄強化米1g中の含有量に対する比を計算することにより、損失率を求めた。その結果を表1にまとめた。
【0029】
【表1】

Figure 2004073051
【0030】
この結果より明らかな様に、本願発明品は比較品よりも洗米による鉄分の損失が少なかった。また、水溶性の硫酸第一鉄よりも不溶性のピロリン酸第二鉄の方が鉄分の損失が少なく、同じピロリン酸第二鉄であっても未粉砕よりも粉砕した方が鉄分の損失が少なかった。
【0031】
実施例9.強化麦の調製
実施例5において、精白米の代わりに米粒麦600gを使用する以外は同様にして、本願発明の鉄強化麦620gを得た。
【0032】
試験例2.炊飯時の風味の確認
実施例5で得られた本願発明の強化米及び実施例9で得られた強化麦各1gをそれぞれ精白米200gに混合して試料米とした。それぞれを試験例1と同様な方法で洗米した後、電気炊飯器を使用して、鉄分及びビタミン類の強化されたご飯を調製した。鉄分の強化されていない米又は麦を同量添加したものを比較品として調製し、官能検査を行ったところ、両者に差は感じられなかった。
【0033】
本発明の実施態様ならびに目的生成物を挙げれば以下のとおりである。
(1) 鉄塩及びポリグリセリン脂肪酸エステル及び硬化油を含有する混合物を、米粒又は麦粒に被覆してなることを特徴とする鉄強化米又は鉄強化麦。
(2) 鉄塩が、水に不溶性の鉄塩であることを特徴とする(1)記載の鉄強化米又は鉄強化麦。
(3) 鉄塩が、ピロリン酸第二鉄であることを特徴とする(1)又は(2)いずれか記載の鉄強化米又は鉄強化麦。
(4) ポリグリセリン脂肪酸エステルのHLBが5以下であることを特徴とする(1)〜(3)いずれか記載の鉄強化米又は鉄強化麦。
(5) ポリグリセリン脂肪酸エステルのHLBが4以下であることを特徴とする(1)〜(4)いずれか記載の鉄強化米又は鉄強化麦。
(6) ポリグリセリン脂肪酸エステルを構成するポリグリセリンの平均重合度が3以上であることを特徴とする(1)〜(5)いずれか記載の鉄強化米又は鉄強化麦。
(7) ポリグリセリン脂肪酸エステルを構成するポリグリセリンの平均重合度が3〜11であることを特徴とする(1)〜(5)いずれか記載の鉄強化米又は鉄強化麦。
(8) ポリグリセリン脂肪酸エステルが炭素数8〜20の脂肪酸からなるポリグリセリン脂肪酸エステルを含む1種又は2種以上であることを特徴とする(1)〜(7)いずれか記載の鉄強化米又は鉄強化麦。
(9) ポリグリセリン脂肪酸エステルを構成する脂肪酸が縮合リシノレイン酸からなるポリグリセリン脂肪酸エステルを含む1種又は2種以上であることを特徴とする(1)〜(8)いずれか記載の鉄強化米又は鉄強化麦。
(10) ポリグリセリン脂肪酸エステルが、ヘキサステアリン酸ヘキサグリセリン、オクタステアリン酸ヘキサグリセリン、縮合リシノレイン酸ヘキサグリセリン、縮合リシノレイン酸ペンタグリセリンより選ばれる1種又は2種以上であることを特徴とする(1)〜(9)いずれか記載の鉄強化米又は鉄強化麦。
【0034】
(11) 鉄塩のレーザー回折型粒度分布測定による平均粒子径が2μm以下であることを特徴とする(1)〜(10)いずれか記載の鉄強化米又は鉄強化麦。
(12) 鉄塩のレーザー回折型粒度分布測定による平均粒子径が1μm以下であることを特徴とする(1)〜(10)いずれか記載の鉄強化米又は鉄強化麦。
(13) 鉄塩のレーザー回折型粒度分布測定による平均粒子径が0.5μm以下であることを特徴とする(1)〜(10)いずれか記載の鉄強化米又は鉄強化麦。
(14) 硬化油が、植物性硬化油であることを特徴とする(1)〜(13)いずれか記載の鉄強化米又は鉄強化麦。
【0035】
(15) 鉄塩の添加量が、硬化油100重量部に対して1〜100重量部であることを特徴とする(1)〜(14)いずれか記載の鉄強化米又は鉄強化麦。
(16) 鉄塩の添加量が、硬化油100重量部に対して10重量部以上であることを特徴とする(15)記載の鉄強化米又は鉄強化麦。
(17) 鉄塩の添加量が、硬化油100重量部に対して25重量部以上であることを特徴とする(15)記載の鉄強化米又は鉄強化麦。
(18) 鉄塩の添加量が、硬化油100重量部に対して90重量部以下であることを特徴とする(15)〜(17)いずれか記載の鉄強化米又は鉄強化麦。
(19) 鉄塩の添加量が、硬化油100重量部に対して75重量部以下であることを特徴とする(15)〜(17)いずれか記載の鉄強化米又は鉄強化麦。
【0036】
(20) ポリグリセリン脂肪酸エステルの添加量が、硬化油100重量部に対して0.1〜100重量部であることを特徴とする(1)〜(19)いずれか記載の鉄強化米又は鉄強化麦。
(21) ポリグリセリン脂肪酸エステルの添加量が、硬化油100重量部に対して1重量部以上であることを特徴とする(20)記載の鉄強化米又は鉄強化麦。
(22) ポリグリセリン脂肪酸エステルの添加量が、硬化油100重量部に対して5重量部以上であることを特徴とする(20)記載の鉄強化米又は鉄強化麦。
(23) ポリグリセリン脂肪酸エステルの添加量が、硬化油100重量部に対して50重量部以下であることを特徴とする(20)〜(22)いずれか記載の鉄強化米又は鉄強化麦。
(24) ポリグリセリン脂肪酸エステルの添加量が、硬化油100重量部に対して20重量部以下であることを特徴とする(20)〜(22)いずれか記載の鉄強化米又は鉄強化麦。
(25) 米又は麦への栄養素の被覆工程が1回であることを特徴とする(1)〜(24)いずれか記載の鉄強化米又は鉄強化麦
(26) (1)〜(25)いずれか記載の鉄強化米又は鉄強化麦の製造方法。
(27) (1)〜(26)いずれか記載の鉄強化米又は鉄強化麦を含有することを特徴とする米飯類。
【0037】
【発明の効果】
本発明によれば、従来の強化米や強化麦に比べて水洗いの際に強化栄養素の流出ロスが極めて少ない強化米等が容易に且つ効率良く提供され、これを混和して炊いたごはんの風味も実質的に低下しないので、米等を主食とする人々には極めて有用であり、その産業上の利用価値は大である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to rice or barley with iron fortification, and relates to a stable iron-reinforced rice or barley with a reduced amount of iron attached to the rice or barley surface during normal rice sharpening (washing with water). Things.
[0002]
[Prior art]
In recent years, in the Japanese dietary habits of rice as a staple food, wheat products such as bread have been eaten as staple foods in addition to rice, and instant processed foods have been widely used in recent years. As a result, the nutritional balance has been biased, and its impact on human health has become a social problem. As a method of compensating for such nutritional imbalance, in particular, fortified rice and the like, which are supplemented with vitamin B 1 and other deficient water-soluble vitamins and fat-soluble vitamins, and other nutrients on the surface of rice, are commercially available. , Has become widely edible.
[0003]
Such fortification, for example, after immersing the raw rice or raw barley in an acidic solution in which the enriched nutrients are dissolved, steamed for a short time to contain the nutrients, a method of hot-air drying, or a fat-soluble nutrient insoluble in water Is emulsified, and mineral nutrients such as water-soluble vitamins, calcium, and iron are mixed in appropriate amounts to be fortified and added as an aqueous solution or added to the above-mentioned emulsion, and the nutrients are subjected to, for example, fluid granulation. It is manufactured and provided by a method of coating the surface of polished rice or the like using a centrifugal machine, a centrifugal fluidized-flow granulator, and the like, followed by drying. However, in the case of washing the nutrients before cooking rice or the like, a considerable amount of the nutrients thus adhered and strengthened has been inevitably flowed out, resulting in a problem of loss. In order to prevent this, it is desirable to fix it so that the attached nutrients do not easily migrate to the aqueous phase by washing with water, except for processing for non-washed rice (rice that does not require washing before cooking rice etc.). However, at present, a practically effective coating method has not been found yet. Further, the method of coating with twein or shellac requires large-scale manufacturing equipment, and thus has not been used industrially until now.
[0004]
In the method of coating an emulsion of fats and oils and waxes described in Japanese Patent Publication No. 5-30426 (JP-A-59-130157), there is a problem that the flavor is reduced because waxes are used.
In addition, the method using ethanol described in Japanese Patent Application Laid-Open No. 8-56593 has a problem in that only a solvent soluble in ethanol can be used as a coating agent, and there is a risk that the ethanol used in coating may ignite. Was.
In addition, in any method, in order to stabilize nutrients, it is necessary to perform the two-step process of coating nutrients and then performing coating for immobilization, which is very troublesome. .
[0005]
[Problems to be solved by the invention]
An object of the present invention is to reduce the outflow of iron adhered to the surface of rice grains and wheat grains in ordinary rice sharpening (washing) with water, which is industrially safe and can be easily produced in one coating step. Another object of the present invention is to provide stable iron-enriched rice or barley.
[0006]
[Means for Solving the Problems]
By coating a mixture containing an iron salt, a polyglycerin fatty acid ester and a hardened oil on rice grains or barley grains, the present inventors are industrially safe and can be easily produced in a single coating step. The present inventors have found that it is possible to provide a stable iron-enriched rice or an iron-enriched wheat in which outflow of iron during rice polishing is suppressed, and completed the present invention.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The rice in the present invention is not particularly limited in its kind, and may be any of non-glutinous rice, rice cake, upland rice, indica rice, Javanica rice, and the like, and is not limited to its grinding accuracy. Polished rice, germ polished rice, seven-minute polished rice, five-minute polished rice, brown rice and the like.
Barley in the present invention, the type is not particularly limited, barley, bread wheat, crab wheat, durum wheat, barley, oats, rye, etc., may be any, and its grinding accuracy and shape However, the present invention is not limited thereto, and any of pressed wheat, white wheat, rice grain wheat, and the like may be used.
[0008]
The iron salt in the present invention is not particularly limited, ferric pyrophosphate, ferric citrate, ferrous sodium citrate, ferrous sulfate, ferric gluconate, iron lactate, water Ferric oxide, ferric chloride, ferrous fumarate, ferric sesquioxide, and threonine iron can be used alone or in combination of two or more. Iron salts insoluble in water such as ferric acid, ferrous fumarate and iron threonine are preferable, and in view of color tone and flavor, ferric pyrophosphate is most preferable. The term "insoluble" as used herein refers to a substance that falls under "extremely insoluble" or "almost insoluble" in the test method of the seventh edition of the Food Additives General Regulations 29, and preferably falls under "substantially insoluble" Is what you do.
[0009]
The average particle size of the iron salt is not particularly limited, but is preferably 2 μm or less, more preferably 1 μm or less, and most preferably 0.5 μm or less, as measured by laser diffraction type particle size distribution measurement. When a particle having a larger average particle diameter is used, it may not be possible to form a more uniform coating on rice grains or wheat grains. Examples of a method for obtaining an iron salt having this average particle size include a method using neutral salt formation (Japanese Patent No. 3050921), a method using a dry pulverizer such as a jet mill, and a method using a wet pulverizer such as a coball mill or a dyno mill. Pulverization in a polyglycerin fatty acid ester and a hardened oil by a wet pulverizer is preferable because pulverization and uniform mixing and dispersion can be performed simultaneously.
[0010]
The polyglycerin fatty acid ester in the present invention refers to an ester of polyglycerin and a fatty acid, and the average degree of polymerization of the polyglycerin, the type of the fatty acid, and the esterification rate are not particularly limited. The HLB calculated from the molecular weight ratio of the hydrophilic group to the lipophilic group is preferably 5 or less, more preferably 4 or less. The average degree of polymerization of polyglycerin constituting the polyglycerin fatty acid ester is preferably 3 or more, more preferably 3 to 11. The fatty acid constituting the polyglycerin fatty acid ester is preferably a fatty acid having a hydroxyl group in a saturated or unsaturated linear or branched chain having 8 to 20 carbon atoms, or condensed ricinoleic acid, and more preferably condensed ricinoleic acid.
Specifically, one or two or more selected from hexaglycerin hexastearate, hexaglycerin octastearate, hexaglycerin condensed ricinoleate, and pentaglycerin condensed ricinoleate are preferred. One or more selected from glycerin is more preferred.
Further, in the present invention, a food emulsifier other than the polyglycerin fatty acid ester may be used in combination. Examples of the food emulsifier include sucrose fatty acid ester, glycerin fatty acid ester, propylene glycol fatty acid ester and sorbitan fatty acid ester, lecithin, enzyme-decomposed lecithin and the like.
[0011]
The hardened oil in the present invention is not particularly limited as long as it does not melt at room temperature. The hardened oil is not limited to one type, and two or more types may be used in combination. Usually, it is fats and oils whose melting point is 30 ° C. or more, and preferably fats and oils whose melting point is 35 ° C. or more. For example, hardened vegetable oils such as hardened soybean oil, hardened cottonseed oil, hardened rapeseed oil, hardened coconut oil, hardened rice oil, hardened corn oil, and animal fats and oils such as beef tallow and lard, and hydrogenated hydrogenated oils. Hardened animal oils and the like, and vegetable-hardened oils are preferable from the viewpoint of affecting taste and the like.
[0012]
The addition amount of the iron salt is not particularly limited, and can be appropriately adjusted depending on the type of the iron salt in accordance with a desired reinforcement ratio. Usually, it is good to mix 1 to 100 parts by weight with respect to 100 parts by weight of hardened oil. The lower limit of the addition amount is preferably 10 parts by weight, more preferably 25 parts by weight, per 100 parts by weight of the hardened oil. If the amount of the iron salt added is less than this ratio, a large amount of the mixture is required for strengthening the iron content, which is not practical. The upper limit of the amount added is preferably 90 parts by weight, more preferably 75 parts by weight, per 100 parts by weight of the hardened oil. When the amount of the iron salt added is larger than this ratio, the iron salt is insufficiently covered with the hardened oil, and the iron salt is easily eluted during rice polishing.
[0013]
The amount of the polyglycerin fatty acid ester to be added is not particularly limited, but usually 0.1 to 100 parts by weight per 100 parts by weight of the hardened oil is preferably added. The lower limit of the amount added is preferably 1 part by weight, more preferably 5 parts by weight, per 100 parts by weight of the hardened oil. If the amount of the polyglycerin fatty acid ester is less than this ratio, it is difficult to sufficiently disperse the iron salt, and it is not practical. The upper limit of the addition amount is preferably 50 parts by weight, more preferably 20 parts by weight, based on 100 parts by weight of the hardened oil. When the amount of the polyglycerin fatty acid ester added is larger than this ratio, the contained components are liable to be eluted by emulsification inversion during rice polishing.
[0014]
In the present invention, the material to be strengthened to rice or wheat is not limited to iron alone, and other materials can also be strengthened. As materials which can be enriched with iron, vitamin A, vitamin B 1, vitamin B 2, vitamin B 6, vitamin B 12, vitamin C, vitamin D, vitamin E, niacin (nicotinic acid), pantothenic acid, vitamin folic acid, etc. , Lysine, threonine, tryptophan, and other essential amino acids, and minerals other than iron, such as calcium and magnesium, and, for example, α-linolenic acid, EPA, DHA, evening primrose oil, octacosanol, casein phosphopeptide (CPP), casein One or two or more substances that contribute to human health, such as calcium peptide (CCP), dietary fiber, and oligosaccharides, and other useful substances approved as food additives can be used.
[0015]
The addition amount of these materials, depending on the desired strengthening, as appropriate, but the type and the respective amount of nutrients is enhanced selectively deposited, for example, vitamin B 1 represents, to include 100~150mg per rice 100g The reference amount of special nutritional food that was previously established can be referred to. It is also possible to make up for the shortfall by referring to the data on the results of the National Nutrition Survey. Alternatively, rice or the like may be increased to match the nutritional level of the original brown rice or the like. These may be mixed with the polyglycerol fatty acid ester and the hardened oil simultaneously with the iron salt, and coated on rice grains or wheat grains.
[0016]
Of these, oil-soluble materials may be dissolved in hardened oil. About the material insoluble in oil, similarly to an iron salt, preferably, the average particle diameter by laser diffraction type particle size distribution measurement is 2 μm or less, more preferably, the average particle diameter is 1 μm or less, most preferably, 0.5 μm or less. Pulverization so that it is possible to coat rice grains or wheat grains more uniformly is desirable. This pulverization is preferably performed by a pulverization method using a wet pulverizer, as in the case of the above-described iron salt.
[0017]
In the method for producing the enriched rice or barley of the present invention, a mixture containing an iron salt, a polyglycerin fatty acid ester, and a hardened oil may be coated on rice grains or wheat grains. At that time, a mixture containing the iron salt, the polyglycerin fatty acid ester, and the hardened oil may be used as it is, or may be used as an emulsified solution emulsified in water, but it is unnecessary to use a step such as drying without using a step. It is preferable because there is.
In the present invention, the method of coating a mixture containing an iron salt and a polyglycerin fatty acid ester and a hardened oil on rice grains or barley grains, the method for coating the rice grains or barley grains may be any method that can uniformly coat the rice grains or barley grains. Without being limited, for example, a method in which rice or wheat is charged into a rotated coating pan, and a mixture containing an iron salt and a polyglycerin fatty acid ester and a hardened oil is sprayed while hot air is blown to coat the same, Examples of the method include a method in which the operation is performed in a fluidized granulator. Among them, a spray coating method capable of more uniform coating is preferable.
For the purpose of coloring the finished reinforced rice or barley, pigments such as vitamin B 2 , β-carotene, and gardenia pigments may be added to the coating liquid.
[0018]
The enriched rice or barley of the present invention can be used by adding and mixing ordinary rice or barley when cooked rice is cooked or cooked, or using enriched rice or barley alone. The ratio of addition and mixing to ordinary rice or barley is not particularly limited, and can be arbitrarily set depending on the degree of fortification of the nutrients of the enriched rice or barley and the amount of the nutrients to be added to cooked rice. When used in addition and mixing, usually 0.01 to 10 parts by weight, preferably 0.1 to 2 parts by weight, based on 100 parts by weight of rice or wheat, the enriched rice or barley of the present invention may be added and mixed. .
In addition, the cooked rice mentioned here is cooked and cooked rice and / or wheat, such as white rice, red rice, porridge, porridge, pilaf, fried rice, doria, risotto, barley rice, oatmeal, and the like.
[0019]
Next, the present invention will be described in more detail with reference to Examples, Comparative Examples and Test Examples, but the present invention is not limited to these Examples and the like.
【Example】
Embodiment 1 FIG. Preparation of mixture containing iron salt, polyglycerin fatty acid ester and hydrogenated oil (1)
30 g of ferric pyrophosphate, 8 g of condensed hexaglycerin ricinoleate (Sunsoft 818H; HLB = 1: manufactured by Taiyo Kagaku Co., Ltd.) and 62 g of hardened coconut oil (melting point: 36 ° C.) were mixed, and the mixture was mixed with Koball Mill (Shinko Pantech). (Manufactured by K.K.) to obtain 96 g of mixture A.
The average particle size of the iron salt measured by laser diffraction type particle size distribution was 0.4 μm.
[0020]
Embodiment 2. FIG. Preparation of mixture containing iron salt and polyglycerin fatty acid ester and hydrogenated oil (2)
30 g of ferrous sulfate heptahydrate, 8 g of hexaglycerin condensed ricinoleate (Sunsoft 818H; HLB = 1, manufactured by Taiyo Kagaku Co., Ltd.) and 62 g of hardened coconut oil (melting point: 36 ° C.) were mixed and mixed with a coball mill ( Using Shinko Pantech Co., Ltd.), the mixture was pulverized and uniformly mixed to obtain 96 g of a mixture B.
The average particle size of the iron salt measured by laser diffraction type particle size distribution was 0.4 μm.
[0021]
Embodiment 3 FIG. Preparation of mixture containing iron salt, polyglycerin fatty acid ester and hydrogenated oil (3)
30 g of ferric pyrophosphate, 8 g of hexaglycerin condensed ricinoleate (Sunsoft 818H; HLB = 1: manufactured by Taiyo Kagaku Co., Ltd.) and 62 g of hardened coconut oil (melting point: 36 ° C.) are uniformly mixed with a homomixer, and 94 g of the mixture C is mixed. Obtained.
The average particle size of the iron salt measured by laser diffraction type particle size distribution was 3.5 μm.
[0022]
Embodiment 4. FIG. Preparation of mixture containing iron salt and polyglycerin fatty acid ester and hydrogenated oil (4)
Potassium iodide 2g, vitamin B 1 hydrochloride 30g, niacin 266 g, vitamin B 12 28 mg, mixing folic acid 3g, was prepared vitamin premix.
20 g of ferric pyrophosphate, hexaglycerin condensed ricinoleate (Sunsoft 818H; HLB = 1, manufactured by Taiyo Kagaku Co., Ltd.), 1 g of enzyme-decomposed lecithin (San lecithin A: manufactured by Taiyo Kagaku Co., Ltd.), coconut oil (Melting point 36 ° C.) 54.2 g, the above-mentioned vitamin premix 15 g, vitamin A palmitate (1 million units / g) 2.5 g, and casein calcium peptide (CCP: manufactured by Taiyo Chemical Co., Ltd.) 0.3 g were mixed, This was pulverized and uniformly mixed using a Dyno mill (manufactured by Shinmaru Enterprises Co., Ltd.) to obtain 96 g of a mixture D.
The average particle size of the solids containing the iron salt in the mixture as measured by laser diffraction particle size distribution measurement was 0.3 μm.
[0023]
Embodiment 5 FIG. Preparation of iron-fortified rice (1)
600 g of polished rice is put into a coating pan, and while rotating the coating pan, air at normal temperature is sent, and 20.6 g of the mixture A obtained in Example 1 is sprayed at a rate of 2.5 g / min while maintaining at 60 ° C. Coating was performed to obtain 620 g of iron-reinforced rice E of the present invention.
[0024]
Embodiment 6 FIG. Preparation of iron-fortified rice (2)
Iron-reinforced rice F630 g of the present invention was obtained in the same manner as in Example 5, except that 31 g of the mixture B obtained in Example 2 was sprayed as a coating liquid.
[0025]
Embodiment 7 FIG. Preparation of iron-fortified rice (3)
620 g of the iron-reinforced rice G of the present invention was obtained in the same manner as in Example 5, except that 20.6 g of the mixture C obtained in Example 3 was sprayed as a coating solution.
[0026]
Embodiment 8 FIG. Preparation of iron-fortified rice (4)
630 g of iron-reinforced rice H of the present invention was obtained in the same manner as in Example 5, except that 31 g of the mixture D obtained in Example 4 was sprayed as a coating solution.
[0027]
Comparative Example 1 Preparation of Iron Salt-Fat Two-Step Coated Rice 600 g of polished rice is put into a coating pan, and hot air is sent while rotating the coating pan to disperse 6.2 g of ferric pyrophosphate in 200 ml of deionized water. The coating was performed by spraying at a rate of / min. After the spraying of the solution was completed, hot air was continued to be sent and dried until the water content became 10%, and then the air was cooled and cooled to 30 ° C. Then, the air was blown at room temperature, and coating was performed by spraying 13.8 g of hardened coconut oil (melting point 36 ° C.) at a rate of 2.5 g / min while maintaining the temperature at 60 ° C., to obtain 620 g of iron-reinforced rice I as a comparative product.
[0028]
Test Example 1 Iron Outflow Test by Washing Rice 1 g each of the iron-enriched rice EI of the present invention and a comparative product was mixed with 200 g of polished rice to prepare sample rice. 250 ml of tap water was added to each sampled rice, and the rice was washed with water at a speed of about 30 revolutions per minute so as to be washed and drained four times. The drained water was collected, the amount of iron contained in the water was measured by atomic absorption spectrometry, and the ratio to the content in 1 g of iron-enriched rice was calculated to determine the loss rate. Table 1 summarizes the results.
[0029]
[Table 1]
Figure 2004073051
[0030]
As is evident from the results, the product of the present invention lost less iron due to rice washing than the comparative product. Insoluble ferric pyrophosphate has less loss of iron than water-soluble ferrous sulfate. Was.
[0031]
Embodiment 9 FIG. Preparation of Fortified Barley In Example 5, 620 g of the iron-fortified wheat of the present invention was obtained in the same manner except that 600 g of rice grain barley was used instead of milled rice.
[0032]
Test Example 2. Confirmation of Flavor at the Time of Cooking Rice 1 g of the enriched rice of the present invention obtained in Example 5 and 1 g of the enriched wheat obtained in Example 9 were mixed with 200 g of milled rice to prepare sample rice. After each of them was washed in the same manner as in Test Example 1, rice was fortified with iron and vitamins using an electric rice cooker. As a comparative product prepared by adding the same amount of rice or wheat without iron fortification, and performing a sensory test, no difference was found between the two.
[0033]
Embodiments of the present invention and the desired products are as follows.
(1) An iron-reinforced rice or an iron-reinforced wheat, wherein a mixture containing an iron salt, a polyglycerin fatty acid ester, and a hardened oil is coated on rice grains or wheat grains.
(2) The iron-reinforced rice or the iron-reinforced wheat according to (1), wherein the iron salt is a water-insoluble iron salt.
(3) The iron-fortified rice or the iron-enriched wheat according to any one of (1) and (2), wherein the iron salt is ferric pyrophosphate.
(4) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (3), wherein the polyglycerol fatty acid ester has an HLB of 5 or less.
(5) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (4), wherein the polyglycerol fatty acid ester has an HLB of 4 or less.
(6) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (5), wherein the average degree of polymerization of polyglycerin constituting the polyglycerin fatty acid ester is 3 or more.
(7) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (5), wherein the average degree of polymerization of polyglycerin constituting the polyglycerin fatty acid ester is 3 to 11.
(8) The iron-reinforced rice according to any one of (1) to (7), wherein the polyglycerin fatty acid ester is one or more kinds including a polyglycerin fatty acid ester composed of a fatty acid having 8 to 20 carbon atoms. Or iron-fortified wheat.
(9) The iron-enriched rice according to any one of (1) to (8), wherein the fatty acid constituting the polyglycerin fatty acid ester is one or more kinds including a polyglycerin fatty acid ester composed of condensed ricinoleic acid. Or iron-fortified wheat.
(10) The polyglycerin fatty acid ester is one or more selected from hexaglycerin hexastearate, hexaglycerin octastearate, hexaglycerin condensed ricinoleate, and pentaglycerin condensed ricinoleate (1). The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (9).
[0034]
(11) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (10), wherein the average particle diameter of the iron salt measured by laser diffraction type particle size distribution is 2 μm or less.
(12) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (10), wherein the iron salt has an average particle size of 1 μm or less as measured by laser diffraction type particle size distribution measurement.
(13) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (10), wherein the average particle diameter of the iron salt measured by a laser diffraction type particle size distribution is 0.5 μm or less.
(14) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (13), wherein the hardened oil is a vegetable hardened oil.
[0035]
(15) The iron-reinforced rice or the iron-reinforced wheat according to any one of (1) to (14), wherein the addition amount of the iron salt is 1 to 100 parts by weight based on 100 parts by weight of the hardened oil.
(16) The iron-reinforced rice or the iron-reinforced wheat according to (15), wherein the addition amount of the iron salt is 10 parts by weight or more based on 100 parts by weight of the hardened oil.
(17) The iron-reinforced rice or the iron-reinforced wheat according to (15), wherein the addition amount of the iron salt is 25 parts by weight or more based on 100 parts by weight of the hardened oil.
(18) The iron-reinforced rice or the iron-reinforced wheat according to any one of (15) to (17), wherein an addition amount of the iron salt is 90 parts by weight or less based on 100 parts by weight of the hardened oil.
(19) The iron-reinforced rice or the iron-reinforced wheat according to any one of (15) to (17), wherein the addition amount of the iron salt is 75 parts by weight or less based on 100 parts by weight of the hardened oil.
[0036]
(20) The iron-reinforced rice or iron according to any one of (1) to (19), wherein the addition amount of the polyglycerin fatty acid ester is 0.1 to 100 parts by weight based on 100 parts by weight of the hardened oil. Enhanced wheat.
(21) The iron-reinforced rice or the iron-reinforced wheat according to (20), wherein the addition amount of the polyglycerin fatty acid ester is 1 part by weight or more based on 100 parts by weight of the hardened oil.
(22) The iron-reinforced rice or the iron-reinforced wheat according to (20), wherein an addition amount of the polyglycerin fatty acid ester is 5 parts by weight or more based on 100 parts by weight of the hardened oil.
(23) The iron-reinforced rice or the iron-reinforced wheat according to any one of (20) to (22), wherein an addition amount of the polyglycerin fatty acid ester is 50 parts by weight or less based on 100 parts by weight of the hardened oil.
(24) The iron-reinforced rice or the iron-reinforced wheat according to any one of (20) to (22), wherein an addition amount of the polyglycerin fatty acid ester is 20 parts by weight or less based on 100 parts by weight of the hardened oil.
(25) The step of coating rice or wheat with nutrients is performed once, and the iron-reinforced rice or iron-reinforced wheat according to any one of (1) to (24) (26) (1) to (25) A method for producing iron-reinforced rice or iron-reinforced wheat according to any of the above.
(27) A cooked rice characterized by containing the iron-enriched rice or the iron-enriched wheat according to any one of (1) to (26).
[0037]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the outflow loss of the fortified nutrient at the time of washing with water compared with the conventional fortified rice and fortified wheat is provided easily and efficiently, and the fortified rice etc. are easily and efficiently provided, and the flavor of the rice cooked by mixing this is provided. Since it does not substantially decrease, it is extremely useful for people who eat rice or the like as a staple food, and its industrial utility value is great.

Claims (2)

鉄塩、ポリグリセリン脂肪酸エステル及び硬化油を含有する混合物を、米粒又は麦粒に被覆してなることを特徴とした鉄強化米又は鉄強化麦。Iron-enriched rice or barley comprising a mixture comprising an iron salt, a polyglycerin fatty acid ester and a hardened oil coated on rice grains or barley grains. 鉄塩の平均粒径が2μm以下であることを特徴とする請求項1記載の鉄強化米又は鉄強化麦。The iron-reinforced rice or the iron-reinforced wheat according to claim 1, wherein the average particle size of the iron salt is 2 µm or less.
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Publication number Priority date Publication date Assignee Title
JP2016041058A (en) * 2014-08-14 2016-03-31 森永製菓株式会社 Method for producing coated food

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016041058A (en) * 2014-08-14 2016-03-31 森永製菓株式会社 Method for producing coated food

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