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茶の潜在的に有毒な要素の包括的な評価:多式統計を用いた生物利用可能性,生物利用可能性,および健康リスク分析

Riddhi Basu¹, Saibal Ghosh^1,2, Gourav Mondal¹

¹Agricultural and Ecological Research Unit, Indian Statistical Institute, 815301, Giridih, Jharkhand, India.

Biological trace element research

|August 23, 2025

まとめ

茶葉に含まれる潜在的に有毒な元素 (PTE) は世界的な健康問題ですこの研究では,いくつかの北ベンガル茶の鉛 (Pb) が限界値を超えていることが判明し,注入液中のPTEによる消費者の潜在的なリスクを示しています.

科学分野:

環境科学
食品の安全性
毒理学について

背景:

紅茶は,健康に有益であると認められた,世界中で消費される飲み物です.
茶葉に含まれる潜在的に有毒な元素 (PTE) は,世界的に大きな懸念事項です.
PTEの生物学的利用可能性と土壌から茶の注入物への移転を理解することは,公衆衛生にとって極めて重要です.

研究の目的:

茶の土壌におけるPTEの生物学的利用性と,茶葉や注入液へのその移転を評価する.
インドの北ベンガル州から採取したお茶のサンプルで,PTEの汚染に伴う健康上のリスクを評価する.
PTEの生物利用可能性に影響を与える要因を特定し,リスク軽減戦略を策定する.

主な方法:

北ベンガルの4つの異なる茶栽培地域から 100個の茶のサンプルを分析した.
土壌,葉,注入液におけるPTE (Cr,Ni,Cu,Zn,Pb) の定量化
セルフオーガナイズマップ,ソボルの感受性分析,ランダムフォレストアルゴリズムのデータ解釈の適用
FIAMモデルによるHazard Quotient (HQ) 及びSAMOEモデルによる発がん性リスクの計算

主要な成果:

ゾーン1 (North Dinajpur) は,PTEが葉から注入液に伝染する割合が最も高く,Pbは許容限度を超えました.
茶葉のPTE汚染レベルはゾーン1からゾーン4に減少した.
土壌のpHと有機炭素含有量は,生物利用可能なPTEと逆関係を示した.
Cr,Ni,PbのHazard Quotient (HQ) が0. 5を超えると,消費者の潜在的なリスクが示され,発がん性のリスクは軽微であった.

結論:

特定の地域での茶の消費は,特に鉛によるPTE汚染による健康上のリスクをもたらす可能性があります.
土壌の性質は,PTEの生物学的利用可能性と茶への転移に大きな影響を与えます.
この発見は,茶の安全性を確保するために,PTEの許容限界の確立に役立つ.

キーワード:

FIAM PTE についてランダム・フォレストソボルの感受性テイラー

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