離散サンプル導入による炎原子吸収スペクトロメトリーによる牛乳サンプルにおける亜鉛の測定のための新しい糖抜き補助抽出法 (SoAE) の開発
Eduardo da Silva G de Castro1, Ricardo J Cassella2
1Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, NIteró/RJ, 24020-141, Brazil; Instituto Federal do Rio de Janeiro, Campus Nilópolis, Rua Cel. Delio Menezes Porto, 1045, Centro, Nilópolis, RJ 26530-060, Brazil.
Food chemistry
|August 28, 2025
まとめ
新しい糖分除去補助抽出法 (SoAE) は,炎原子吸収スペクトロメトリー (FAAS) を使用して,牛乳中の亜鉛を効率的に測定します. この技術は,様々な種類の牛乳の亜鉛含有量を分析するのに高い精度と感度を提供します.
科学分野:
- 分析化学
- 食品化学
- 環境科学
背景:
- 精密な亜鉛の測定は,牛乳の栄養と安全性の評価に不可欠です.
- 牛乳のような複雑なマトリックスにおける伝統的な亜鉛分析方法は,時間がかかり,干渉が起こりやすい.
研究 の 目的:
- 乳中の亜鉛を定量化するための新しい効率的な方法を開発し,検証する.
- 炎原子吸収スペクトロメトリー (FAAS) と組み合わせた砂糖除去補助抽出技術 (SoAE) を利用する.
主な方法:
- 亜鉛 ((II) は,ダイエチルジチオカルバマート (DDTC) 複合体としてアセトニトリルに抽出されました.
- 段階分離は,SoAE技術の重要な構成要素であるサクロースを加えることで誘導された.
- 抽出パラメータ (pH,DDTC濃度,砂糖質量) とFAASシステムの最適化が行われました.
主要な成果:
- 開発された方法は,重大な干渉を示さなかった.
- 検出限界 (0. 003 mg kg−1) と定量化限界 (0. 011 mg kg−1) を達成した.
- 100.5 ± 4.3%の回収率で認証された基準材料を用いて検証された精度.
結論:
- SoAE-FAAS方法は,様々なミルクサンプルにおける亜鉛の測定に敏感で正確で信頼性の高いアプローチを提供します.
- この技術は,様々な乳製品における亜鉛の常時分析に適しています.
- この方法は,牛,ヤギ,脱脂,全身,乳糖のないミルクにおける亜鉛の量化に成功しました.
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