JP5758758B2 - 微量元素を利用した国内産小麦の産地判別方法 - Google Patents
微量元素を利用した国内産小麦の産地判別方法 Download PDFInfo
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- 229910052712 strontium Inorganic materials 0.000 claims description 26
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- 229910052759 nickel Inorganic materials 0.000 claims description 21
- 238000004458 analytical method Methods 0.000 claims description 18
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 16
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 12
- 239000010941 cobalt Substances 0.000 claims description 12
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 12
- 239000011733 molybdenum Substances 0.000 claims description 12
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims description 12
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 11
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 13
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- 230000035945 sensitivity Effects 0.000 description 6
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 238000011002 quantification Methods 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
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- 238000004876 x-ray fluorescence Methods 0.000 description 3
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
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- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
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- 241000272875 Ardeidae Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
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- 238000003306 harvesting Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
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- 235000020985 whole grains Nutrition 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Description
(1)小麦試料に含まれるルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルの量を分析し、それらの分析情報を用いて小麦の産地を判別する方法。
(2)日本産小麦の産地を判別するための前記(1)に記載の方法。
(3)北海道産小麦と、関東産小麦と、九州産小麦とを判別するための前記(1)に記載の方法。
(4)次の工程:
(i)小麦試料を酸分解して無機成分を主に含む溶液を調製する工程、
(ii)工程(i)で調製した溶液中のルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルのそれぞれの量を測定する工程、及び
(iii)工程(ii)で得られたルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルのそれぞれの量と、判別したい産地由来の小麦試料の前記各元素の量とを比較する工程
を含む前記(1)〜(3)のいずれかに記載の方法。
本発明において対象となる小麦は、外皮を含む全粒及び外皮を除去した穀粒、加工時に汚染されていないものであれば、押し麦、粉などの粉砕物も含まれる。
本工程は、小麦試料を酸分解して無機成分を主に含む溶液を調製する工程である。小麦に含まれるルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルの量はごく僅かであることから、使用する器具などからサンプルへのコンタミネーションを抑制するため、清浄な樹脂製使い捨てチューブ、例えばデジチューブ(ジーエルサイエンス)を分解容器として試料を採取し、更に硝酸を主とした酸を添加して、例えばデジプレップ酸分解用ヒートブロックシステム(ジーエルサイエンス)により加温して酸分解し、有機物を揮散させて無機成分を主に含む溶液を調製する。
本工程は、〔酸分解〕工程で調製した溶液中のルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルのそれぞれの量を、例えば誘導結合プラズマ質量分析法(ICP−MS)、誘導結合プラズマ発光分光分析法(ICP−AES)又は原子吸光分析法(AAS)により測定する工程である。
前記の工程に従って、判別したい産地内の様々な地域由来の小麦のルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルの量を決定してデータベースとし、試料のデータと比較することで産地を判別することができる。信頼性の高い産地判別法にするには、対象となる産地から偏りなくできるだけ産地を代表するように試料を多数収集し、データを得る必要がある。各産地由来の小麦についてこれらのデータベースを構築する。
構築しておいたデータベースと比較してどの産地に近いか確認することで産地を判別する。
〔試料〕
小麦試料は粒状態未加工のものであり、詳細は以下に示す。
小麦を2.5gずつデジチューブに2本量り取った。各チューブに69%硝酸を10mL添加し、デジプレップ酸分解用ヒートブロックシステムにより加熱して酸分解した。この途中で30%過酸化水素2mLを添加して分解を促進させた。残渣に69%硝酸3mLを加え加温して溶解し、分解液2本分を15mL容遠沈チューブに超純水で洗い込み、12mLの目盛りまでメスアップし約8M硝酸水溶液になるように調製した。
酸分解溶液に内標としてインジウムを添加し、40倍希釈して、溶液中のRb、Sr、Mo、Mn、Co及びNiを誘導結合プラズマ質量分析法(ICP−MS)により測定した。
判別したい試料のRb、Sr、Mo、Mn、Co及びNiの濃度を測定し、データベースと比較することで産地を判別した。
Claims (4)
- 小麦試料に含まれるルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルの量を分析し、それらの分析情報を用いて小麦の産地を判別する方法。
- 日本産小麦の産地を判別するための請求項1記載の方法。
- 北海道産小麦と、関東産小麦と、九州産小麦とを判別するための請求項1記載の方法。
- 次の工程:
(i)小麦試料を酸分解して無機成分を主に含む溶液を調製する工程、
(ii)工程(i)で調製した溶液中のルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルのそれぞれの量を測定する工程、及び
(iii)工程(ii)で得られたルビジウム、ストロンチウム、モリブデン、マンガン、コバルト及びニッケルのそれぞれの量と、判別したい産地由来の小麦試料の前記各元素の量とを比較する工程
を含む請求項1〜3のいずれか1項に記載の方法。
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JP6148101B2 (ja) * | 2013-07-26 | 2017-06-14 | 京セラ株式会社 | 切削工具 |
JP2015206706A (ja) * | 2014-04-22 | 2015-11-19 | 日清オイリオグループ株式会社 | 微量元素を利用した南米産大豆の産地判別方法 |
JP6619323B2 (ja) * | 2016-12-19 | 2019-12-11 | 日本電信電話株式会社 | コメ産地推定方法 |
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