Pyrrolizidine-producing weeds in tea gardens as an indicator of alkaloids in tea.

IF 2.5 3区农林科学 Q2 CHEMISTRY, APPLIED

Food additives & contaminants. Part B, Surveillance Pub Date : 2023-03-01 DOI:10.1080/19393210.2022.2145507

Weiting Jiao, Luyao Wang, Lei Zhu, Tingting Shen, Taozhong Shi, Ping Zhang, Chen Wang, Hongping Chen, Xiangwei Wu, Tianyuan Yang, Qing X Li, Rimao Hua

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引用次数: 3

Abstract

Pyrrolizidine alkaloids (PAs) can be transferred between plants via soil. Indicators of PAs in tea products are useful for tea garden management. In the present work a total of 37 weed species, 37 weed rhizospheric soils and 24 fresh tea leaf samples were collected from tea gardens, in which PAs were detected in 35 weeds species, 21 soil samples and 10 fresh tea leaves samples. In Shexian tea garden, 12.9 μg/kg of intermedine (Im) in one bud plus three leaves, 1.40 and 14.6 μg/kg of intermedine-N-oxide (ImNO) in one bud plus two leaves and one bud plus three leaves were detected, which were transferred from the PA-producing weeds via soil. However, no PAs were detected in fresh tea leaves collected from Langxi tea garden. The results indicated that synthesis of PAs in weeds and their transfer through the weed-soil-fresh tea leaf route varied with soil environments in different tea gardens.

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茶园产吡咯利西啶杂草对茶叶生物碱的指示作用。

吡咯lizidine生物碱(PAs)可以通过土壤在植物间转移。茶叶产品PAs指标对茶园管理有一定的参考价值。本研究共采集了茶园37种杂草、37种杂草根际土壤和24种新鲜茶叶样品，其中在35种杂草、21种土壤和10种新鲜茶叶样品中检测到PAs。在歙县茶园，一芽加三叶中中间体(Im)含量为12.9 μg/kg，一芽加两片叶和一芽加三叶中中间体- n -氧化物(ImNO)含量分别为1.40和14.6 μg/kg，这些中间体是由产pa杂草经土壤转移而来。然而，从朗溪茶园采集的新鲜茶叶中未检测到PAs。结果表明，不同茶园土壤环境不同，杂草中PAs的合成及其通过杂草-土壤-鲜茶叶途径的转移也不同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Food additives & contaminants. Part B, Surveillance 农林科学-毒理学

CiteScore

5.30

自引率

10.30%

发文量

审稿时长

2.7 months

期刊介绍： Food Additives & Contaminants: Part B publishes surveillance data indicating the presence and levels of occurrence of designated food additives, residues and contaminants in foods, food supplements and animal feed. Data using validated methods must meet stipulated quality standards to be acceptable and must be presented in a prescribed format for subsequent data-handling. Food Additives & Contaminants: Part B restricts its scope to include certain classes of food additives, residues and contaminants. This is based on a goal of covering those areas where there is a need to record surveillance data for the purposes of exposure and risk assessment. The scope is initially restricted to: Additives - food colours, artificial sweeteners, and preservatives; Residues – veterinary drug and pesticide residues; Contaminants – metals, mycotoxins, phycotoxins, plant toxins, nitrate/nitrite, PCDDs/PCFDs, PCBs, PAHs, acrylamide, 3-MPCD and contaminants derived from food packaging. Readership: The readership includes scientists involved in all aspects of food safety and quality and particularly those involved in monitoring human exposure to chemicals from the diet. Papers reporting surveillance data in areas other than the above should be submitted to Part A . The scope of Part B will be expanded from time-to-time to ensure inclusion of new areas of concern.