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Zorzella Fontana ME, Caiel da Silva R, Duarte Dos Santos I, Neu JP, Wouters RD, Babinski PJ, Hoffmann JF, Rossi RC, Essi L, Pizzutti IR. Comprehensive assessment of clean-up strategies for optimizing an analytical multi-method to determine pesticides and mycotoxins in Brazilian medicinal herbs using QuEChERS-LC-TQ-MS/MS. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:5082-5104. [PMID: 38990094 DOI: 10.1039/d4ay00599f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The use of medicinal herbs has increased significantly. However, the presence of pesticide residues and mycotoxins in medicinal herbs has generated constant discussion and concern among regulatory agencies. Developing and validating an analytical method for determining pesticides and mycotoxins in medicinal plants is challenging due to the naturally occurring substances in these plants. The purpose of this work was to develop and to optimize a sensitive, accurate, precise, effective QuEChERS method for simultaneous determination of over 160 pesticide and mycotoxin residues in complex medicinal plant matrices using LC-TQ-MS/MS. A comprehensive comparison of clean-up procedures and other parameters was conducted to achieve this goal. The validation procedure was performed according to SANTE 11312/2021. More polar analytes, such as acephate, methamidophos and omethoate, presented a higher negative matrix effect in both Melissa officinalis L. and Malva sylvestris L. However, other molecules, such as spirodiclofen, showed a 24% signal enhancement in M. officinalis and a 46% signal suppression in M. sylvestris, indicating that a representative matrix-matched calibration would lead to inaccurate quantification of the analyte. Accuracy and precision were satisfactory according to SANTE 11312/2021 for 157 pesticide residues and mycotoxins in M. officinalis and for 152 molecules in M. sylvestris. LOQs at 10 µg kg-1 were achieved for 117 pesticides in M. officinalis and 99 pesticides in M. sylvestris. Among the mycotoxins, all four aflatoxins (B1, B2, G1 and G2) presented LOQs of 5 µg kg-1, and ochratoxin A had an LOQ of 10 µg kg-1 in M. officinalis. The same LOQ values were shown for these mycotoxins in M. sylvestris, except for aflatoxin B2 and ochratoxin A, which had LOQs of 20 µg kg-1. Moreover, in Southern Brazil, there has been no previous study on mycotoxin and pesticide contamination in medicinal herbs. Therefore, the application of this method was assessed through the analysis of forty-two real samples. Imidacloprid was found in M. officinalis, and methyl pirimiphos was found in M. sylvestris. The proposed method not only serves as a helpful tool for routine monitoring but also offers a basis for further research on risk assessment and control in food safety.
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Affiliation(s)
- Marlos Eduardo Zorzella Fontana
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
| | - Rosselei Caiel da Silva
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
| | - Ingrid Duarte Dos Santos
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
- UFSM - Federal University of Santa Maria, Food Science and Technology Department, 97105-900, Santa Maria/RS, Brazil
| | - Júlia Paula Neu
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
| | - Robson Dias Wouters
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
| | - Paola Jennifer Babinski
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
| | - Jessica Fernanda Hoffmann
- UNISINOS - University of Vale do Rio dos Sinos, Health School - Professional Master's in Food, Nutrition and Health, 93022-000, São Leopoldo/RS, Brazil
| | - Rochele Cassanta Rossi
- UNISINOS - University of Vale do Rio dos Sinos, Health School - Professional Master's in Food, Nutrition and Health, 93022-000, São Leopoldo/RS, Brazil
| | - Liliana Essi
- UFSM - Federal University of Santa Maria, Biology Department, 97105-900, Santa Maria/RS, Brazil
| | - Ionara Regina Pizzutti
- UFSM - Federal University of Santa Maria, Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria/RS, Brazil.
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Mello DC, Caldas ED. Determination of ethylene-bis-dithiocarbamates and their degradation product ethylenethiourea in dry herbs by UHPLC-MS/MS. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4539-4550. [PMID: 38910531 DOI: 10.1039/d4ay00597j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Dithiocarbamates are a class of fungicides widely used in many countries. In this study, methods for determining the ethylene-bis-dithiocarbamate (EBDC) subclass, and their degradation product ethylenethiourea (ETU) were validated by UHPLC-MS/MS in different types of dry herbs, which can be used as food and/or medicinal purposes. Mancozeb was used in the validation of the EBDC method, where it was initially complexed with EDTA, derivatized, extracted with dimethyl sulfate in acetonitrile, magnesium sulfate (MgSO4), and sodium chloride (NaCl), and then purified using primary secondary amine (PSA). In the ETU method, L-cysteine hydrochloride monohydrate was added to the samples before extraction with acetonitrile, MgSO4, and NaCl, followed by purification with PSA. A pesticide-free blend of seven herbs (boldo, artichoke, "espinheira-santa", cat's claw, senna, chamomile, and cascara buckthorn) comprising distinct parts of the plants (leaves, bark, flowers and/or stems) was used as a control for method validation. Recoveries ranged from 79 to 113% for EBDC and 81 to 109% for ETU. Repeatability and intermediate precision were <20% for both methods. The limit of quantification was 0.03 mg kg-1 for EBDC (0.02 mg kg-1 of CS2) and ETU. The limit of detection (LOD) was set at 1/3 of the LOQ (0.01 mg kg-1 for both analytes). In total, 103 samples of 33 different dry herbs were analyzed, of which 19.4% were positive for EBDC (≥LOD), but no ETU residues were found in any of the analyzed samples. Given the absence of registered dithiocarbamates for use in the investigated herbs in Brazil, the positive results suggest potential illegal pesticide use or cross-contamination, especially considering the low concentrations detected in most samples. Although exposure to EBDC through the consumption of medicinal herbs from positive samples did not indicate a health risk to consumers, these plants must be monitored to prevent illicit pesticide usage, particularly when the herbs are intended for therapeutic purposes.
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Affiliation(s)
- Denise Carvalho Mello
- Laboratory of Toxicology, Department of Pharmacy, University of Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, Federal District, Brazil.
| | - Eloisa Dutra Caldas
- Laboratory of Toxicology, Department of Pharmacy, University of Brasília, Campus Darcy Ribeiro, 70910-900, Brasília, Federal District, Brazil.
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Oyinloye PO, Ajala AS, Asogwa NT, Galani YJH. Fortification of dough with moringa, coriander, and amaranth improves the nutritional composition, health-benefiting properties, and sensory attributes of Nigerian wheat bread. Food Sci Nutr 2024; 12:615-626. [PMID: 38268902 PMCID: PMC10804088 DOI: 10.1002/fsn3.3753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/13/2023] [Accepted: 09/27/2023] [Indexed: 01/26/2024] Open
Abstract
Consumption of bread can be associated with some health issues, which can be improved by fortifying it with plants that are good sources of nutrients and bioactive compounds. This study investigated the effects of fortifying bread with 3 leafy vegetables on the quality of Nigerian wheat bread. Leave powders of coriander, moringa, and amaranths were added to wheat dough at 0% (control), 1%, 3%, 5%, or 7%, and the blends obtained were used to bake vegetable breads, which were then analyzed for proximate, minerals, total phenolics, antioxidant activity, reducing sugars, glycemic index, and sensory evaluation. Results showed that vegetable fortification significantly increased bread ash (from 0.84% in control up to 1.93% in fortified bread), crude fiber (from 1.68% to 3.29%), and nutritionally important minerals Ca, Mg, P, Fe, and Zn (up to 5.2-fold, 5.1-fold, 18.1-fold, 4.1-fold, and 14.0-fold, respectively); it reduced carbohydrates (from 65.65% down to 43.16%), crude lipids (from 2.25% down to 0.44%), and caloric value (from 1239.65 down to 1125.19 kJ/100 g), with little or no effect on proteins and moisture content. The fortification also improved the bioactive properties of the bread, as evidenced by a considerably higher phenolic content (from 0.40 up to 13.95 mg/100 g GAE) and increased antioxidant activities. There was a significant 1.1-to 3.4-fold decrease in the reducing sugars of composite breads with 5% and 7% vegetable powder, and the selected bread formulation with Moringa 7% lowered the glycemic index of rats by 3.5-fold. Fortification did not generally affect the appearance and taste of the breads but decreased other sensory parameters and overall acceptability; the bread sample enriched with 1% amaranth received the highest general acceptance. In conclusion, fortifying wheat bread with the 3 vegetables improves its nutritional quality and can be recommended as a new pathway for the development of more nutritious and healthy bread.
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Affiliation(s)
- P. O. Oyinloye
- Department of Food Science and EngineeringLadoke Akintola University of TechnologyOgbomosoNigeria
| | - A. S. Ajala
- Department of Food Science and EngineeringLadoke Akintola University of TechnologyOgbomosoNigeria
- School of Allied and Public Health Professions, Faculty of Medicine, Health and Social CareCanterbury Christ Church UniversityCanterburyUK
| | | | - Y. J. H. Galani
- Section of Natural and Applied Sciences, School of Psychology and Life SciencesCanterbury Christ Church UniversityCanterburyUK
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Alam MNE, Hosen MM, Ullah AKMA, Maksud MA, Khan SR, Lutfa LN, Choudhury TR, Quraishi SB. Lead Exposure of Four Biologically Important Common Branded and Non-branded Spices: Relative Analysis and Health Implication. Biol Trace Elem Res 2023; 201:4972-4984. [PMID: 36627477 PMCID: PMC9838428 DOI: 10.1007/s12011-022-03553-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/30/2022] [Indexed: 01/12/2023]
Abstract
Technological advances and socioeconomic development of Bangladesh are leading to the best choice between branded and non-branded powdered spices. But toxic metal issues can be another factor to elect them. So lead (Pb) exposure and its consequence on the human body for these two categories of four common spices have been ascertained here. A validated laboratory method using hot plate digestion and flame atomic absorption spectrometry (FAAS) has been used for that. The obtained mean concentration of Pb in branded and non-branded spice powders followed the decreasing order of turmeric > coriander > red chili > cumin powder and turmeric > red chili > cumin > coriander powder, respectively, where, in any analysis mode, the non-branded items are potentially ahead of Pb exposure. The market-based mean concentration between these two categories was not a significant difference (t-test). Approximately 90% of the spice samples have shown within the maximum allowable limit by Bangladesh Standard. The sum of estimated daily intake indicated that most of the city market (67%) for non-branded items and some branded (33%) samples have crossed the maximum tolerable daily intake (> 0.21 mg/kg). So, the human health risk assumption for the inhabitant of studied areas suggests there is no significant level of risk for them due to the consumption of spices regarding non-carcinogenic risk factor (THQ and total THQ) and carcinogenic risk factor (CR). But the development of a quality control process for loose spice powders as well as toxic metal screening from raw materials to finish products urgently needed and continuous monitoring with identifying the source of toxic metal is highly recommended.
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Affiliation(s)
- M. Nur E. Alam
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - M. Mozammal Hosen
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - A. K. M. Atique Ullah
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - M. A. Maksud
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - S. R. Khan
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - L. N. Lutfa
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - Tasrina Rabia Choudhury
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
| | - Shamshad B. Quraishi
- Analytical Chemistry Laboratory, Atomic Energy Center, Bangladesh, Atomic Energy Commission, Dhaka, 1000 Bangladesh
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Opuni KF, Kretchy JP, Agyabeng K, Boadu JA, Adanu T, Ankamah S, Appiah A, Amoah GB, Baidoo M, Kretchy IA. Contamination of herbal medicinal products in low-and-middle-income countries: A systematic review. Heliyon 2023; 9:e19370. [PMID: 37674839 PMCID: PMC10477504 DOI: 10.1016/j.heliyon.2023.e19370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 09/08/2023] Open
Abstract
The use of herbal medicinal products (HMPs) has grown significantly across low-and-middle-income countries (LMICs). Consequently, the safety of these products due to contamination is a significant public health concern. This systematic review aimed to determine the prevalence, types, and levels of contaminants in HMPs from LMICs. A search was performed in seven online databases, i.e., Africa journal online (AJOL), Cumulative Index to Nursing and Allied Health Literature (CINAHL), Directory of Open Access Journals (DOAJ), Health Inter-Network Access to Research Initiative (HINARI), World Health Organization Global Index Medicus (WHO GIM), Scopus, and PubMed using appropriate search queries and reported as per the "Preferred Reporting Items for Systematic Reviews and Meta-Analyses" (PRISMA) guidelines. Ninety-one peer-reviewed articles published from 1982 to 2021 from 28 different countries across four continents were included in the study. Although metals, microbial, mycotoxins, pesticides, and residual solvents were the reported contaminants in the 91 articles, metals (56.0%, 51/91), microbial (27.5%, 25/91), and mycotoxins (18.7%, 17/91) were the most predominant. About 16.4% (1236/7518) of the samples had their contaminant levels above the regulatory limits. Samples tested for microbial contaminants had the highest proportion (46.4%, 482/1039) of contaminants exceeding the regulatory limit, followed by mycotoxins (25.8%, 109/423) and metals (14.3%, 591/4128). The proportion of samples that had their average non-essential metal contaminant levels above the regulatory limit was (57.6%, 377/655), 18.3% (88/480), 10.7% (24/225), and 11.3% (29/257) for Pb, Cd, Hg, and As, respectively. The commonest bacteria species found were Escherichia coli (52.3%, 10/19) and Salmonella species (42.1%, 8/19). This review reported that almost 90% of Candida albicans and more than 80% of moulds exceeded the required regulatory limits. HMP consumption poses profound health implications to consumers and patients. Therefore, designing and/or implementing policies that effectively regulate HMPs to minimize the health hazards related to their consumption while improving the quality of life of persons living in LMICs are urgently needed.
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Affiliation(s)
- Kwabena F.M. Opuni
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, P.O. Box LG43, Legon, Accra, Ghana
| | - James-Paul Kretchy
- Department of Public Health, School of Medicine and Health Sciences, Central University, P. O. Box 2305, Miotso, Accra, Ghana
| | - Kofi Agyabeng
- Department of Biostatistics, School of Public Health, University of Ghana, P. O. Box LG13, Legon, Accra, Ghana
| | - Joseph A. Boadu
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, P.O. Box LG43, Legon, Accra, Ghana
| | - Theodosia Adanu
- Balme Library, University of Ghana, P.O. Box LG24, Legon, Accra, Ghana
| | - Samuel Ankamah
- Balme Library, University of Ghana, P.O. Box LG24, Legon, Accra, Ghana
| | - Alexander Appiah
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, P.O. Box LG43, Legon, Accra, Ghana
| | - Geralda B. Amoah
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, P.O. Box LG43, Legon, Accra, Ghana
| | - Mariam Baidoo
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, P.O. Box LG43, Legon, Accra, Ghana
| | - Irene A. Kretchy
- Department of Pharmacy Practice and Clinical Pharmacy, School of Pharmacy, University of Ghana, P.O. Box LG43, Legon, Accra, Ghana
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Liu Y, Bei K, Zheng W, Yu G, Sun C. Assessment of health risks associated with pesticide and heavy metal contents in Fritillaria thunbergii Miq. (Zhe Beimu). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:26807-26818. [PMID: 36369441 DOI: 10.1007/s11356-022-23995-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Fritillaria thunbergii Miq. (Zhe Beimu, F. thunbergii) is widely cultivated in China's Zhejiang province, and pesticides and heavy metals are two major factors affecting its quality and safety. A total of 106 F. thunbergii samples from six main production areas were analyzed for 76 pesticides and four heavy metal content (As, Cd, Hg, and Pb). The pesticide detection rate of the samples was 66.98%; overall, the pesticide residues were very low, and residue levels ranged from 0.010 to 0.231 mg kg-1. The detection rates of As, Cd, Hg, and Pb were 95.3%, 100%, 76.4%, and 100%, respectively. A risk assessment of human exposure to pesticides and heavy metals via intake of F. thunbergii was performed, and the results revealed that the pesticide residues and heavy metal content detected in F. thunbergii does not pose a potential risk to human health, either in the long or short term. The exposure assessment showed that the levels of pesticides and heavy metals in F. thunbergii were safe for human consumption. These results provide useful information on F. thunbergii consumption.
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Affiliation(s)
- Yuhong Liu
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, 198# Shiqiao Road, Hangzhou, 310021, Zhejiang, People's Republic of China
- State Key Laboratory for Quality and Safety of Agro-Products, Key Lab for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Hangzhou, 310021, China
| | - Ke Bei
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Weiran Zheng
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, 198# Shiqiao Road, Hangzhou, 310021, Zhejiang, People's Republic of China
- State Key Laboratory for Quality and Safety of Agro-Products, Key Lab for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Hangzhou, 310021, China
| | - Guoguang Yu
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, 198# Shiqiao Road, Hangzhou, 310021, Zhejiang, People's Republic of China
- State Key Laboratory for Quality and Safety of Agro-Products, Key Lab for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Hangzhou, 310021, China
| | - Caixia Sun
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, 198# Shiqiao Road, Hangzhou, 310021, Zhejiang, People's Republic of China.
- State Key Laboratory for Quality and Safety of Agro-Products, Key Lab for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Hangzhou, 310021, China.
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Senosy IA, Lu ZH, Zhou DD, Abdelrahman TM, Chen M, Zhuang LY, Liu X, Cao YW, Li JH, Hua Yang Z. Construction of a magnetic solid-phase extraction method for the analysis of azole pesticides residue in medicinal plants. Food Chem 2022; 386:132743. [PMID: 35364494 DOI: 10.1016/j.foodchem.2022.132743] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 11/26/2022]
Abstract
In this work, a sensitive and cost-effective method for the quantitative analysis of azole pesticides residues in six medicinal plants was established based on magnetic cyclodextrin crosslinked with tetrafluoroterephthalonitrile (Fe3O4@TFN-CDPs) coupled with high-performance liquid chromatography (HPLC). Through characterization analysis, the outer shell of Fe3O4@TFN-CDPs has observed coating with a network of the polymer and forming a core-shell structure. Under the optimum conditions, the limits of detection (LODs) and limits of qualification (LOQs) of target pesticides were ranged from 0.011 to 0.106 µg Kg-1 and from 0.036 to 0.354 µg Kg-1, respectively. Finally, the achieved recoveries of pesticides in six medicinal samples fluctuated from 60.1% to 102.3%. Altogether, this method based on Fe3O4@TFN-CDPs composites provided a new idea for the analysis of trace pesticides in complicated matrices.
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Affiliation(s)
- Ibrahim A Senosy
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China; Faculty of Agriculture, Department of Plant Protection, Fayoum University, Fayoum 63514, Egypt
| | - Zhi-Heng Lu
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Dong-Dong Zhou
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Talat M Abdelrahman
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China; Faculty of Agriculture, Department of Plant Protection, Al-Azhar University, Assiut 71524, Egypt
| | - Min Chen
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Lv-Yun Zhuang
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiao Liu
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Yi-Wen Cao
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Jian-Hong Li
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhong- Hua Yang
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China.
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Hlihor RM, Roșca M, Hagiu-Zaleschi L, Simion IM, Daraban GM, Stoleru V. Medicinal Plant Growth in Heavy Metals Contaminated Soils: Responses to Metal Stress and Induced Risks to Human Health. TOXICS 2022; 10:toxics10090499. [PMID: 36136464 PMCID: PMC9504071 DOI: 10.3390/toxics10090499] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 05/31/2023]
Abstract
Accelerating heavy metal pollution is a hot issue due to a continuous growth in consumerism and increased activities in various global industries. Soil contamination with heavy metals has resulted in their incorporation into the human food web via plant components. Accumulation and amplification of heavy metals in human tissues through the consumption of medicinal plants can have hazardous health outcomes. Therefore, in this critical review we aim to bring together published information on this subject, with a special highlight on the knowledge gaps related to heavy metal stress in medicinal plants, their responses, and human health related risks. In this respect, this review outlines the key contamination sources of heavy metals in plants, as well as the absorption, mobilization and translocation of metal ions in plant compartments, while considering their respective mechanisms of detoxification. In addition, this literature review attempts to highlight how stress and defensive strategies operate in plants, pointing out the main stressors, either biotic or abiotic (e.g., heavy metals), and the role of reactive oxygen species (ROS) in stress answers. Finally, in our research, we further aim to capture the risks caused by heavy metals in medicinal plants to human health through the assessment of both a hazard quotient (HQ) and hazard index (HI).
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Affiliation(s)
- Raluca Maria Hlihor
- Department of Horticultural Technologies, Faculty of Horticulture, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania
| | - Mihaela Roșca
- Department of Horticultural Technologies, Faculty of Horticulture, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania
| | - Laura Hagiu-Zaleschi
- Department of Horticultural Technologies, Faculty of Horticulture, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania
| | - Isabela Maria Simion
- Department of Horticultural Technologies, Faculty of Horticulture, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania
| | - Gabriel Mihăiță Daraban
- Department of Organic, Biochemical and Food Engineering, “Cristofor Simionescu” Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73 Prof. D. Mangeron Blvd., 700050 Iasi, Romania
| | - Vasile Stoleru
- Department of Horticultural Technologies, Faculty of Horticulture, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 3 Mihail Sadoveanu Alley, 700490 Iasi, Romania
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Safety Evaluation of Heavy Metal Contamination and Pesticide Residues in Coix Seeds in Guizhou Province, China. Foods 2022; 11:foods11152286. [PMID: 35954054 PMCID: PMC9367953 DOI: 10.3390/foods11152286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/26/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
The coix seed is a medicinal and edible plant with rich nutritional and medicinal values. With the expansion of the coix seed consumption market, the problem of coix seed safety has attracted attention worldwide. The aims of this work were to evaluate the contamination of mercury (Hg), lead (Pb), cadmium (Cd), arsenic (As), chromium (Cr) and 116 pesticides in coix seeds collected from 12 main producing regions of coix seeds in the Guizhou Province of China and to analyze the major contributors of heavy metal and pesticide contamination in coix seed. The results show that the average contents of Pb, Cd, As and Cr in the 123 coix seed samples were 0.0069, 0.0021, 0.0138 and 0.1107 mg/kg, respectively, while Hg was not detected in all coix seed samples. Among the five heavy metals detected, only the Cr contents of three samples were found to be higher than the contaminant limit of Chinese standard GB2762-2017 (CSGB). A total of 13 pesticides were detected in 29 samples from seven main production regions of coix seeds, accounting for 23.6% of all the samples. The detection rates of chlorpyrifos were the highest (8.13%), followed by fenpropathrin (4.06%), bifenthrin (2.43%) and phoxim (1.62%), while the detection rates of the remaining pesticides were below 1%. Moreover, the residual risk score of dichlorvos was the highest of all the pesticides detected. The pollution index and risk assessment of heavy metals and pesticide residues indicates that coix seeds were at safe levels for consumption. In the production process of coix seeds, the local government should control the soil in areas heavily polluted by heavy metals and strengthen the monitoring and guidance on the scientific and rational use of pesticides.
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M Pauzi NA, Cheema MS, Ismail A, Ghazali AR, Abdullah R. Safety assessment of natural products in Malaysia: current practices, challenges, and new strategies. REVIEWS ON ENVIRONMENTAL HEALTH 2022; 37:169-179. [PMID: 34582637 DOI: 10.1515/reveh-2021-0072] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
The belief that natural products are inherently safe is a primary reason for consumers to choose traditional medicines and herbal supplements for health maintenance and disease prevention. Unfortunately, some natural products on the market have been found to contain toxic compounds, such as heavy metals and microbes, as well as banned ingredients such as aristolochic acids. It shows that the existing regulatory system is inadequate and highlights the importance of thorough safety evaluations. In Malaysia, the National Pharmaceutical Regulatory Agency is responsible for the regulatory control of medicinal products and cosmetics, including natural products. For registration purpose, the safety of natural products is primarily determined through the review of documents, including monographs, research articles and scientific reports. One of the main factors hampering safety evaluations of natural products is the lack of toxicological data from animal studies. However, international regulatory agencies such as the European Food Safety Authority and the United States Food and Drug Administration are beginning to accept data obtained using alternative strategies such as non-animal predictive toxicological tools. Our paper discusses the use of state-of-the-art techniques, including chemometrics, in silico modelling and omics technologies and their applications to the safety assessments of natural products.
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Affiliation(s)
- Nur Azra M Pauzi
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
- Ministry of Health, Kompleks E, Pusat Pentadbiran Kerajaan Persekutuan, Putrajaya, Malaysia
| | - Manraj S Cheema
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Amin Ismail
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Ahmad Rohi Ghazali
- Biomedical Sciences Programmes, Faculty of Health Sciences, Universiti Kebangsaan Malaysia Kuala Lumpur, Malaysia
| | - Rozaini Abdullah
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Selangor, Malaysia
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11
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Cadmium in herbal weight loss products as a health risk factor for consumers. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2022-0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Introduction
Herbal weight loss remedies are produced from various plant species which could accumulate heavy metals from the environment. The consumption of contaminated herbal preparations could be a source of consumer exposure to toxic metals. The aim of the study was to evaluate the content of cadmium in selected herbal weight loss products available on the Polish market, to determine exposure of consumers to the heavy metal included in herbal infusions prepared from the studied products and the related health risk.
Materials and Methods
The study included 29 herbal weight loss products available on the Polish market. The content of cadmium in the analyzed dried herbs and herbal infusions was analyzed. Based on the obtained results, the exposure of consumers to cadmium and the related health risks were estimated.
Results
Cadmium concentration in dried herbs did not exceed the maximum allowable concentration.
Conclusions
The exposure of consumers of the most contaminated herbal infusions to cadmium could be equal to half of the reference dose, which is an acceptable exposure threshold.
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12
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Gu YX, Yan TC, Yue ZX, Liu FM, Cao J, Ye LH. Recent developments and applications in the microextraction and separation technology of harmful substances in a complex matrix. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Hussain S, Hoque RR. Biomonitoring of metallic air pollutants in unique habitations of the Brahmaputra Valley using moss species-Atrichum angustatum: spatiotemporal deposition patterns and sources. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:10617-10634. [PMID: 34524675 DOI: 10.1007/s11356-021-16153-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
In this paper, we have evaluated the bioaccumulation of metals by Atrichum angustatum, which is a readily available moss species in the Brahmaputra valley, India. A systematic investigation of metallic pollutants in the atmosphere was carried out using A. angustatum as a biomonitor collected from representative locations during three seasons viz. winter, pre-monsoon, and monsoon (n = 99) during the year 2018. The study was done in four unique habitations of the Brahmaputra Valley, which were further divided into three landuse areas: residential, roadside, and industrial. The highest accumulations were seen against Ca, Mg, Zn, and Fe. The calculated contaminant factors and ecological risk indices suggest that the Brahmaputra Valley is mostly contaminated by Cr, Zn, Cu, Ni, and Pb, and these metals pose a maximum ecological risk. The accumulation trend of metallic pollutants was site-specific, but most metals showed positive seasonal accumulation. A significant difference in spatial and seasonal accumulation patterns was specific to metal species. Principal component analysis (PCA) and inter-species correlations revealed that the air quality of Brahmaputra valley was greatly affected by coal burning, vehicular emission, biomass burning, road dust, and crustal dust. Finally, the study led us to the conclusion that A. angustatum can serve as a potential biomonitor for metallic pollutants.
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Affiliation(s)
- Sharfaa Hussain
- Department of Environmental Science, Tezpur University, Tezpur, 784028, India
| | - Raza R Hoque
- Department of Environmental Science, Tezpur University, Tezpur, 784028, India.
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Hillebrands L, Lamshoeft M, Lagojda A, Stork A, Kayser O. In vitro metabolism of tebuconazole, flurtamone, fenhexamid, metalaxyl-M and spirodiclofen in Cannabis sativa L. (hemp) callus cultures. PEST MANAGEMENT SCIENCE 2021; 77:5356-5366. [PMID: 34309997 PMCID: PMC9292707 DOI: 10.1002/ps.6575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Cannabis sativa L. (hemp) is a medicinal plant producing various cannabinoids. Its consumption is legalized for medical use due to the alleged positive health effects of these cannabinoids. To satisfy the demand, C. sativa plants are propagated in contained growth chambers. During indoor propagation, pesticides usually are used to ensure efficient production. However, pesticide registration and safe application in C. sativa has not been investigated in detail. RESULTS With this study the metabolic degradation of pesticides in recently established C. sativa callus cultures was examined. Tebuconazole, metalaxyl-M fenhexamid, flurtamone and spirodiclofen were applied at 10 μm for 21 days. Results were compared with metabolism data obtained from Brassica napus L., Glycine max (L.) Merr., Zea mays L. and Tritium aestivum L. callus cultures as well as in metabolism guideline studies. The successfully established C. sativa callus cultures were able to degrade pesticides by oxidation, demethylation, and cleavage of ester bonds in phase I, as well as glycosylation and conjugation with malonic acid in phase II and III. Initial metabolites were detected after Day (D)7 and were traced at D21. CONCLUSION The resulting pathways demonstrate the same main degradation strategies as crop plants. Because metabolites could be the main residue, the exposure of consumers to these residues will be of high importance. We present here an in vitro assay for a first estimation of pesticide metabolism in C. sativa. © 2021 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Leonie Hillebrands
- Faculty of Biochemical and Chemical Engineering, Chair of Technical BiochemistryTU Dortmund UniversityDortmundGermany
- Bayer AG Division Crop ScienceMonheimGermany
| | | | | | | | - Oliver Kayser
- Faculty of Biochemical and Chemical Engineering, Chair of Technical BiochemistryTU Dortmund UniversityDortmundGermany
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15
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Mukherjee R, Pandya P, Baxi D, Ramachandran AV. Endocrine Disruptors-'Food' for Thought. PROCEEDINGS OF THE ZOOLOGICAL SOCIETY 2021; 74:432-442. [PMID: 34866764 PMCID: PMC8632730 DOI: 10.1007/s12595-021-00414-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 11/15/2022]
Abstract
Green vegetables, fruits, cereals, and pulses are all rich sources of antioxidants. Retinoic acid, ascorbate, proanthocyanidins, tannins, saponins, melatonin, curcumin, allicin, and alpha-lipoic acid stand documented in plants as bioactive compounds. The international dietary committee advocates a specific quantum of these natural antioxidants through diet. Interestingly, environmental pollution has indeed affected most of these farm products. The use of chemical fertilizers, pesticides and heavy metals in soil has a cumulative effect on human health. Enough evidence is available for the presence of phytoestrogen, xenoestrogen, and a host of other endocrine disruptors in the food. These plant-based nutrients can mimic or enhance the natural hormone's health effects. While endocrine disruptors are found in many everyday products, this review aims to address endocrine disruptors from food in the Asian subcontinent. 'Food for thought' justifies the paradigm shift towards good endocrine health by swaying away from the conventional daily dietary recommendations.
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Affiliation(s)
- Raktim Mukherjee
- Shree P.M. Patel Institute of PG Studies and Research in Science, Affiliated to Sardar Patel University, Anand, Gujarat India
| | - Parth Pandya
- Department of Biomedical and Life Sciences, School of Science, Navrachana University, Vadodara, 391410 Gujarat India
| | - Darshee Baxi
- Department of Biomedical and Life Sciences, School of Science, Navrachana University, Vadodara, 391410 Gujarat India
| | - A. V. Ramachandran
- School of Science, Navrachana University, Vadodara, 391410 Gujarat India
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Xu Z, Mi W, Mi N, Fan X, Tian Y, Zhou Y, Zhao YN. Heavy metal pollution characteristics and health risk assessment of dust fall related to industrial activities in desert steppes. PeerJ 2021; 9:e12430. [PMID: 34760398 PMCID: PMC8571961 DOI: 10.7717/peerj.12430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/12/2021] [Indexed: 11/20/2022] Open
Abstract
China’s desert steppe is the transition zone between the grasslands in central China and the arid desert. Ecological security in this region has long been a subject of debate, both in the local and academic communities. Heavy metals and other pollutants are readily released during industrial production, combustion, and transportation, aggravating the vulnerability of the desert steppes. To understand the impact of industrial activiteis on the heavy metal content of dust fall in the desert steppe, a total of 37 dust fall samples were collected over 90 days. An inductively-coupled plasma mass spectrometer (NexION 350X) was used to measure the concentration of heavy metals Cu, Cd, Cr, Pb, Mn, Co, and Zn in the dust. Using comprehensive pollution index and multivariate statistical analysis methods, we explored the characteristics and sources of heavy metal pollution. We also quantitatively assessed the carcinogenic risks of heavy metals resulting from dust reduction with the help of health risk assessment models. The heavy metals’ comprehensive pollution index values in the study area’s dust fall were ranked as follows: Zn > Cd > Pb > Mn > Cu > Co > Cr. Among these, Zn, Cd, and Pb were significant pollution factors in the study area, and were affected by industrial production and transportation. The high pollution index was concentrated in the north of the research industrial park and on both sides of a highway. The seven heavy metals’ total non-carcinogenic risk index (HI) values were ranked as follows: Mn > Co > Pb > Zn > Cr > Cu > Cd (only the HI of Mn was greater than one). Excluding Mn, the non-carcinogenic and carcinogenic risk index values of the other six heavy metals were within acceptable ranges. Previous studies have also shown that industrial transportation and production have had a significant impact on the heavy metal content of dust fall in the desert steppe.
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Affiliation(s)
- Zhe Xu
- College of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Wenbao Mi
- College of Agriculture, Ningxia University, Yinchuan, Ningxia, China.,School of Geography and Planning, Ningxia University, Yinchuan, Ningxia, China
| | - Nan Mi
- College of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Xingang Fan
- West Development Research Center, Ningxia University, Yinchuan, Ningxia, China
| | - Ying Tian
- College of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Yao Zhou
- College of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Ya-Nan Zhao
- College of Agriculture, Ningxia University, Yinchuan, Ningxia, China
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17
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Geronimo ACR, Melo ESP, Silva KRN, Pereira HS, Nascimento VA, Machate DJ, do Nascimento VA. Human Health Risk Assessment of Heavy Metals and Metalloids in Herbal Medicines Used to Treat Anxiety: Monitoring of Safety. Front Pharmacol 2021; 12:772928. [PMID: 34858191 PMCID: PMC8631468 DOI: 10.3389/fphar.2021.772928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/18/2021] [Indexed: 11/25/2022] Open
Abstract
The present study estimated the human health risk assessment and daily intake of heavy metals and metalloids in herbal medicines used to treat anxiety in Brazil. Six different brands of herbal medicines were purchased in the city of Campo Grande/MS, Brazil: Pasalix®, Calman®, Serenus®, Maracugina®, Prakalmar® and Calmasyn®. In total, eight elements including As, Ba, Cd, Co, Cr, Cu, Fe, and Pb were analyzed using optical emission spectrometry with inductively coupled plasma (ICP OES). Only the concentration of As in the herbal medicine Prakalmar® is above the values established by United States Pharmacopoeia Convention (USP) and Brazilian Pharmacopoeia (BF) for permitted concentration of elemental impurities in drugs substances. The concentration of Ba, Cd, Co, Cr and Cu in all herbal medicines are lower than the values set by USP and FB. The concentration of Pb in Calman® is lower than the limits established by BF, but higher than those established by USP. Pasalix, Serenus®, Calmasyn®, Prakalmar® and Marcacugina® have a higher Pb concentration than the values allowed by USP and BF. All herbal medications have concentrations within safe ranges for human consumption, with the exception of Calmasyn®, which has Pb over the value defined by USP for oral permissible daily exposure (PDE) for elemental impurities. The values of estimated daily intake (EDI) of metal (loid)s in adults and children obtained from the consumption of the herbal medicines are below the values stipulated by the minimal risk levels (MRLs). All the hazard index (HI) values recorded in this study were below 1. However, monitoring by regulatory agency is necessary, large doses of heavy metal may cause acute or chronic toxicities.
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Affiliation(s)
- Ana C. R. Geronimo
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Elaine S. P. Melo
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Kassia R. N. Silva
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Hugo S. Pereira
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Valdir A. Nascimento
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - David J. Machate
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
- Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Valter A. do Nascimento
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
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A Health Risk Assessment of Lead and Other Metals in Pharmaceutical Herbal Products and Dietary Supplements Containing Ginkgo biloba in the Mexico City Metropolitan Area. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18168285. [PMID: 34444035 PMCID: PMC8391129 DOI: 10.3390/ijerph18168285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 11/17/2022]
Abstract
The use of the medicinal plant Ginkgo biloba has increased worldwide. However, G. biloba is capable of assimilating both essential and toxic metals, and the ingestion of contaminated products can cause damage to health. The aim of this study was to investigate the safety of manganese (Mn), copper (Cu), lead (Pb), arsenic (As), and cadmium (Cd) in 26 items containing Ginkgo biloba (pharmaceutical herbal products, dietary supplements, and traditional herbal remedies) purchased in the metropolitan area of Mexico City. Metal analysis was performed using a graphite furnace atomic absorption spectrometer. All of the products were contaminated with Pb, 54% of them with As, and 81% with Cd. The lowest values of Pb, As, and Cd were detected in pharmaceutical herbal products > dietary supplements > traditional herbal remedies. The daily intake dose (DID) of pharmaceutical herbal products was within the established limits for the five metals. Dietary supplements and traditional herbal remedies exceeded the DID limits for Pb. The hazard quotients estimation and non-carcinogenic cumulative hazard estimation index for Mn, As, and Cd indicated no human health risk. Our results suggest that products containing G. biloba for sale in Mexico are not a health risk.
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Luo L, Wang B, Jiang J, Fitzgerald M, Huang Q, Yu Z, Li H, Zhang J, Wei J, Yang C, Zhang H, Dong L, Chen S. Heavy Metal Contaminations in Herbal Medicines: Determination, Comprehensive Risk Assessments, and Solutions. Front Pharmacol 2021; 11:595335. [PMID: 33597875 PMCID: PMC7883644 DOI: 10.3389/fphar.2020.595335] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 11/05/2020] [Indexed: 02/05/2023] Open
Abstract
Heavy metal contamination in herbal medicines is a global threat to human beings especially at levels above known threshold concentrations. The concentrations of five heavy metals cadmium (Cd), lead (Pb), arsenic (As), mercury (Hg) and copper (Cu) were investigated using Inductively Coupled Plasma Optical Mass Spectrometry (ICP-MS) with 1773 samples around the world. According to Chinese Pharmacopoeia, 30.51% (541) samples were detected with at least one over-limit metal. The over-limit ratio for Pb was 5.75% (102), Cd at 4.96% (88), As at 4.17% (74), Hg at 3.78% (67), and of Cu, 1.75% (31). For exposure assessment, Pb, Cd, As, and Hg have resulted in higher than acceptable risks in 25 kinds of herbs. The maximal Estimated Daily Intake of Pb in seven herbs, of Cd in five, of Hg in four, and As in three exceeded their corresponding Provisional Tolerable Daily Intakes. In total 25 kinds of herbs present an unacceptable risk as assessed with the Hazard Quotient or Hazard Index. Additionally, the carcinogenic risks were all under acceptable limits. Notably, As posed the highest risk in all indicators including Estimated Daily Intake, Hazard Index, and carcinogenic risks. Therefore further study on enrichment effect of different states of As and special attention to monitoring shall be placed on As related contamination.
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Affiliation(s)
- Lu Luo
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Bo Wang
- Hubei Institute for Drug Control, Wuhan, China
| | - Jingwen Jiang
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
| | - Martin Fitzgerald
- Department of Life Sciences, University of Westminster, London, United Kingdom
| | - Qin Huang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zheng Yu
- College of Medical Information and Engineering, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hui Li
- Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Jiqing Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jianhe Wei
- Hainan Provincial Key Laboratory of Resources Conservation and Development of Southern Medicine, Hainan Branch of the Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Haikou, China
| | - Chenyuyan Yang
- Institute of Medical Information, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hui Zhang
- Akupunktur Akademiet, Hovedgaard, Denmark
| | - Linlin Dong
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shilin Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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Validation of an ICP-MS Method for the Determination of Mercury, Lead, Cadmium, and Arsenic in Medicinal Plants and Related Drug Preparations. Pharm Chem J 2020. [DOI: 10.1007/s11094-020-02306-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Health risk assessment and bioaccessibility of toxic elements in edible and medicinal plants under different consumption methods. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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22
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Li RX, Li MM, Wang T, Wang TL, Chen JY, Francis F, Fan B, Kong ZQ, Dai XF. Screening of pesticide residues in Traditional Chinese Medicines using modified QuEChERS sample preparation procedure and LC-MS/MS analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1152:122224. [DOI: 10.1016/j.jchromb.2020.122224] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 05/03/2020] [Accepted: 06/04/2020] [Indexed: 11/17/2022]
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Kanda A, Ncube F, Goronga TK. Trace Elements in Leaf Extracts of Eucalyptus grandis Traditionally Used to Treat Common Cold and Flu. J Health Pollut 2019; 9:191214. [PMID: 31893175 PMCID: PMC6905133 DOI: 10.5696/2156-9614-9.24.191214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Eucalyptus species have been used for the remediation of mine tailings dams in Zimbabwe. However, a traditional medicinal remedy (TMR) for the treatment of mild acute respiratory infections, such as common cold and flu includes the use of Eucalyptus leaves. OBJECTIVES The aim of the present study was to determine total concentrations of selected potentially toxic trace elements (PTEs) in gold mine tailings and leaves of Eucalyptus grandis and to identify extractable fractions of PTEs in leaves via boiling for 10 minutes in water, which is the process used to create TMRs to treat common cold and flu. METHODS Mine tailings and leaves of E. grandis were randomly collected at a gold mine tailings dam between April and June 2019. They were digested for laboratory analysis using standard analytical methods. Leaves were boiled in water for 10 minutes to prepare the TMR as practiced by the local community. The concentrations of PTEs were determined spectrometrically. Significant differences between PTEs in young and mature leaves were determined by analysis of variance. RESULTS Mine tailings were acidic (pH 4.52±0.62) with very low content of organic matter (0.02%) and contained PTEs in increasing concentrations of cadmium (Cd) < nickel (Ni) < lead (Pb) < chromium (Cr) < copper (Cu) < zinc (Zn) (n = 27). Mature leaves of E. grandis had higher concentrations than young leaves for Cr, Pb and Zn (p <0.05) which were lower than permissible limits in medicinal plants. Overall, boiling leaves in water for 10 minutes resulted in low extraction of PTEs (< 20%). PARTICIPANT CONSENT Obtained. CONCLUSIONS Concentrations of PTEs in leaves and leaf extracts of E. grandis were very low. However, TMRs should not be prepared from medicinal plants growing on metalliferous environments, such as mine tailings dams, due to the presence of cumulative toxins such as Cd and Pb. Further studies are needed to investigate the effect of various boiling times and should include arsenic in the studied PTEs. COMPETING INTERESTS The authors declare no competing interests for this study.
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Affiliation(s)
- Artwell Kanda
- Department of Environmental Science, Bindura University of Science Education, Bindura, Zimbabwe
| | - France Ncube
- Department of Environmental Science, Bindura University of Science Education, Bindura, Zimbabwe
| | - Takudzwa K. Goronga
- Department of Environmental Science, Bindura University of Science Education, Bindura, Zimbabwe
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Adusei-Mensah F, Essumang DK, Agjei RO, Kauhanen J, Tikkanen-Kaukanen C, Ekor M. Heavy metal content and health risk assessment of commonly patronized herbal medicinal preparations from the Kumasi metropolis of Ghana. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:609-618. [PMID: 32030137 PMCID: PMC6985339 DOI: 10.1007/s40201-019-00373-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 03/28/2019] [Indexed: 06/10/2023]
Abstract
PURPOSE To address the question of whether users of herbal products (HPs) are exposed to harmful contaminants, we evaluated six HPs mostly patronized in Kumasi for heavy metal contamination and assessed the health risk associated with their use. This study is one of the first safety evaluation studies on finished multiherbal products in the region. METHOD Three antimalarial, two antidiabetic and one antihypertensive HPs were selected after a mini-survey and coded randomly as HP A-F. The HPs were acid digested for quantitative analysis of heavy metals using Inductively Coupled Plasma Mass Spectrometer. Hg quantification was carried out using cold vapour atomic absorption spectroscopy. RESULTS The cancer risk estimation values for the carcinogenic metals ranged between 1.54 × 10-9 to 3.73 × 10-4 and were all within acceptable limits. The non-cancer health risk evaluation revealed that, some of the products pose health risk to consumers. The estimated daily intake (EDI) for As in HPF was 2.48 × 10-4 mg/kg/day compared to the reference limit of 1.67 × 10-4 mg/kg/day. HPF also had high hazard index (HI) of 5.70 (HI >1) in children as compared to 1.68 (HI >1) in adults showing a 3.4 folds increase in the health risk among the former. CONCLUSION The six polyherbal products exhibited carcinogenic risk within acceptable limits. Although, the non-carcinogenic risk assessment of products HPA to HPE suggests safety, this can only be ascertained after further characterization of their health risks in detailed chronic toxicity studies. The high HI for product HPF suggests health risk for consumers of this product.
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Affiliation(s)
- Frank Adusei-Mensah
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
- School of Public Health, Texila American University, Georgetown, Guyana
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - David Kofi Essumang
- Department of Chemistry, School of Physical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Richard Osei Agjei
- Department of Chemistry, The University of Eastern Finland, Joensuu Campus, Finland
| | - Jussi Kauhanen
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - Carina Tikkanen-Kaukanen
- Helsinki Institute of Sustainability Science and Ruralia Institute, University of Helsinki, Helsinki, Finland
| | - Martins Ekor
- Department of Pharmacology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
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Ávila-Pérez P, Ortiz-Oliveros HB, Zarazúa-Ortega G, Tejeda-Vega S, Villalva A, Sánchez-Muñoz R. Determining of risk areas due to exposure to heavy metals in the Toluca Valley using epiphytic mosses as a biomonitor. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 241:138-148. [PMID: 30999263 DOI: 10.1016/j.jenvman.2019.04.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/02/2019] [Accepted: 04/07/2019] [Indexed: 06/09/2023]
Abstract
The work aim is to identify the risk areas by exposure to Cr, Cu, Pb and Zn in the Metropolitan Zone of Toluca Valley (MZTV) using the mosses Fabriona cilaris and Leskea angustata as a biomonitors, geostatistical interpolation and multi-criteria evaluation by analytical hierarchy process. The results from the estimation of the enrichment factors (EF) showed that Pb is the heavy metal with the highest values, followed by the Zn, Cu and Cr. The EF obtained for all heavy metals show that there is a moderate to high anthropogenic enrichment. The above indicates that in the MZTV there are emission sources that contribute (significantly) in the amount of Cr, Cu, Pb and Zn accumulated in the biomonitor. Combustion processes, vehicle emissions, biomass burning, brick kiln emissions, agricultural and livestock activities, manufacturing industry and re-deposition by the action of the wind, were identified as the main heavy metals sources in the MZTV. Risk maps showed the high and medium risk areas are located in sites with poor urban vegetation coverage and close to highways and industrial parks. Low risk areas are located in sites with high urban vegetation coverage. The method used for identifying risk areas is a rapid and low-cost evaluation tool can allow local government environmental agencies to define public policies on air pollution control.
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Affiliation(s)
- P Ávila-Pérez
- Departamento de Posgrado, Instituto Tecnológico de Toluca, Ex rancho la Virgen S/N, C.P. 50120, Metepec, Mexico
| | - H B Ortiz-Oliveros
- Dirección de Investigación Tecnológica, Instituto Nacional de Investigaciones Nucleares, A. P. 18-1027, Col. Escandón, Delegación Miguel Hidalgo, C. P. 11801, México, D. F., Mexico; Universidad Autónoma del Estado de México, Toluca, México, Instituto Literario 100, CP 50000, Toluca, Estado de México, Mexico.
| | - G Zarazúa-Ortega
- Dirección de Investigación Tecnológica, Instituto Nacional de Investigaciones Nucleares, A. P. 18-1027, Col. Escandón, Delegación Miguel Hidalgo, C. P. 11801, México, D. F., Mexico
| | - S Tejeda-Vega
- Dirección de Investigación Científica, Instituto Nacional de Investigaciones Nucleares, A. P. 18-1027, Col. Escandón, Delegación Miguel Hidalgo, C. P. 11801, México, D. F., Mexico
| | - A Villalva
- Universidad Autónoma del Estado de México, Toluca, México, Instituto Literario 100, CP 50000, Toluca, Estado de México, Mexico
| | - R Sánchez-Muñoz
- Dirección de Investigación Científica, Instituto Nacional de Investigaciones Nucleares, A. P. 18-1027, Col. Escandón, Delegación Miguel Hidalgo, C. P. 11801, México, D. F., Mexico
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Lv H, Zhang Y, Sun Y, Duan Y. Elemental characteristics of Sanqi (Panax notoginseng) in Yunnan province of China: Multielement determination by ICP-AES and ICP-MS and statistical analysis. Microchem J 2019. [DOI: 10.1016/j.microc.2019.02.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kumar N, Kulsoom M, Shukla V, Kumar D, Kumar S, Tiwari J, Dwivedi N. Profiling of heavy metal and pesticide residues in medicinal plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:29505-29510. [PMID: 30136183 DOI: 10.1007/s11356-018-2993-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 08/16/2018] [Indexed: 06/08/2023]
Abstract
Application of medicinal plant to cure ailments has been practiced by several civilizations. Nowadays, contamination of heavy metals and pesticide residues in medicinal plant is a serious concern, due to toxic effects on human health. The present study was designed with an aim to quantify the heavy metals and pesticide residues in the 20 medicinal herbs, frequently sold in the local market as raw material without any quality assurance. The concentrations of the elements are as follows: copper (2.42-19.14 μgg-1), cadmium (0.01-2.10 μgg-1), chromium (17.63-58.63 μgg-1), iron (7.61-322.6 μgg-1), and lead (13.00-54.47 μgg-1), whereas total metal concentration ranged between 44.73 and 385.15 μgg-1. Among the organic pesticides, HCH (1.63-6.44 μgg-1) and DDT (0.63-7.14 μgg-1) isomers were found to be present in medicinal plant material. Result showed that lead and chromium concentrations in the herbs were above the permissible limits set by WHO. These herbs should be regularly checked for quality assurance before using raw or as a herbal formulation to avoid chronic exposure of metal and pesticides to human being.
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Affiliation(s)
- Narendra Kumar
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India.
| | - Mahiya Kulsoom
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India
| | - Vertika Shukla
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India
| | - Dhananjay Kumar
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India
| | - Sanjeev Kumar
- Center for Environmental Sciences, School of Earth Sciences, Central University of Jharkhand, Brambe, Ranchi, Jharkhand, 8352 05, India
| | - Jaya Tiwari
- Department of Environmental Science, Asian Institute of Public Health, Bhubaneswar, Odisha, India
| | - Neetu Dwivedi
- Department of Environmental Science, Sri Aurobindo College, University of Delhi, New Delhi, 110017, India
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Goyal PK, Verma SK, Sharma AK. Optimization of extraction protocol of Parmelia perlata and its validation for protective effects against oxalate-induced renal injury in NRK-52E cells. J Herb Med 2018. [DOI: 10.1016/j.hermed.2017.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Uwizeyimana H, Wang M, Chen W, Khan K. Ecotoxicological effects of binary mixtures of siduron and Cd on mRNA expression in the earthworm Eisenia fetida. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 610-611:657-665. [PMID: 28822934 DOI: 10.1016/j.scitotenv.2017.07.265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/03/2017] [Accepted: 07/30/2017] [Indexed: 06/07/2023]
Abstract
This study aimed to investigate the eco-toxicological responses of earthworm (Eisenia fetida) exposed to combined siduron (herbicide) and cadmium (Cd). Eisenia fetida gene expressions including metallothionein (MT) and heat shock protein70 (Hsp70) were analyzed using real-time Polymerase Chain Reaction after individual and combined siduron (0.90, 1.80, 3.60 and 7.20μgcm-2) and Cd (0.225, 0.45, 0.90 and 1.80μgcm-2) sublethal exposures. Where, the nature of the toxicological interactions between siduron and Cd in inducing or suppressing MT and Hsp70 expression was determined by applying the Combination index (CI)-isobologram model. The results revealed significant variations in MT and weak changes in Hsp70 expression when the earthworms were exposed to individual Cd. The individual siduron exposure exhibited a significant down-regulation (p<0.01) in MT during all treatments and in Hsp70 expression only at 7.20μgcm-2 concentration; while the mixtures of siduron and Cd exposures resulted a significant down regulation (p<0.05) in both MT and Hsp70 expressions. Moreover, the combined siduron and Cd exposure revealed nearly additive effect (CI=1) at the lower effect levels and significant synergistic effect (CI<1) at the higher effect levels for both MT and Hsp70 expression. The synergistic effects of combined siduron and Cd suggest that there might be a potential risk connected to the co-occurrence of these chemicals in the environment.
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Affiliation(s)
- Herman Uwizeyimana
- University of Chinese Academy of Sciences, Beijing 100049, PR China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Meie Wang
- University of Chinese Academy of Sciences, Beijing 100049, PR China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Weiping Chen
- University of Chinese Academy of Sciences, Beijing 100049, PR China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
| | - Kifayatullah Khan
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; Department of Environmental and Conservation Sciences, University of Swat, Swat 19130, Pakistan
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Titanium Pyrophosphate for Removal of Trivalent Heavy Metals and Actinides Simulated by Retention of Europium. ScientificWorldJournal 2017; 2017:2675897. [PMID: 28785720 PMCID: PMC5529645 DOI: 10.1155/2017/2675897] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 04/24/2017] [Accepted: 05/09/2017] [Indexed: 11/18/2022] Open
Abstract
This work addresses the synthesis of titanium pyrophosphate, as well as the characterization and evaluation of the sorption process of europium, for removal of trivalent heavy metals and actinides simulate. The evaluation of the surface properties of titanium pyrophosphate was carried out determining the surface roughness and surface acidity constants. The values obtained from the determination of the surface roughness of the synthesized solid indicate that the surface of the material presents itself as slightly smooth. The FITEQL program was used to fit the experimental titration curves to obtain the surface acidity constants: logK+ = 3.59 ± 0.06 and logK- = -3.90 ± 0.05. The results of sorption kinetics evidenced that the pseudo-order model explains the retention process of europium, in which the initial sorption velocity was 8.3 × 10-4 mg g-1 min-1 and kinetic constant was 1.8 × 10-3 g mg min-1. The maximum sorption capacity was 0.6 mg g-1. The results obtained from sorption edge showed the existence of two bidentate complexes on the surface.
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Mathur S, Hoskins C. Drug development: Lessons from nature. Biomed Rep 2017; 6:612-614. [PMID: 28584631 DOI: 10.3892/br.2017.909] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 12/14/2016] [Indexed: 12/25/2022] Open
Abstract
Natural products have been acknowledged for numerous years as a vital source of active ingredients in therapeutic agents. In particular, the use of active ingredients derived from plants for use in microbial natural products have long been used before the dawn of modern medicine. From ancient times, the efficacy of natural products has been associated with the chemistry, biochemistry and synthetic activities of natural products. Thus, with scientific advancement in modern molecular and cellular biology, analytical chemistry and pharmacology, the unique properties of these natural products are being harnessed in order to exploit the chemical and structural diversity and biodiversity of these types of products in relation to their therapeutic effect. Often, new molecules of interest in drug design units focus on the rearrangement of chemical entities or structural isomers of naturally occurring products in order to generate new molecules; these may be formulated into clinically useful therapies.
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Affiliation(s)
- Sunil Mathur
- Molecular Drug Research Laboratory, Edinburgh Napier University, Edinburgh EH11 4BN, UK
| | - Clare Hoskins
- Institute of Science and Technology in Medicine, Keele University, Hartshill, Stoke-on-Trent ST4 7QB, UK
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Khan A, Begum S, Ali N, Khan S, Hussain S, Sotomayor MDPT. Preparation of crosslinked chitosan magnetic membrane for cations sorption from aqueous solution. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:2034-2046. [PMID: 28498116 DOI: 10.2166/wst.2017.078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A chitosan magnetic membrane was prepared in order to confer magnetic properties to the membrane, which could be used for the removal of cations from aqueous solution. The crosslinked magnetic membrane was compared with pristine chitosan membrane in term of stability, morphology and cation adsorption capacity. The fabricated magnetic materials are thermally stable as shown by thermogravimetric curves. The membrane containing nickel magnetic particles (CHNiF-G) shows high thermal stability compared to the other membranes. The Fourier transform infrared spectroscopy showed successful preparation of chitosan magnetic membrane. Scanning electron microscopy micrographs showed the rough surface of the membrane with increased porosity. The prepared chitosan membranes were applied to cations of copper, nickel and lead in dilute aqueous solution. The chitosan membrane showed the following adsorption order for metallic cations: Cu2+ > Ni2+ > Pb2+, while CHNiF-G showed higher capacity, 3.51 mmol g-1 for copper, reflecting the improvement in adsorption capacity, since the amount of copper on pristine chitosan gave 1.40 mmol g-1. The time required for adsorption to reach to the equilibrium was 6 h for the selected cations using different chitosan membranes. The kinetic study showed that adsorption followed pseudo-second order kinetics. The most commonly used isotherm models, Freundlich, Langmuir and Temkin, were applied to experimental data using linear regression technique. However, The Temkin model fits better to experimental data.
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Affiliation(s)
- Adnan Khan
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan
| | - Samina Begum
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan
| | - Nauman Ali
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan
| | - Sabir Khan
- Department of Analytical Chemistry, Institute of Chemistry, State University of São Paulo (UNESP), 14801-970 Araraquara, SP, Brazil E-mail:
| | - Sajjad Hussain
- Faculty of Materials & Chemical Engineering GIK Institute of Engineering Sciences & Technology, 23460 Topi, KPK, Pakistan
| | - Maria Del Pilar Taboada Sotomayor
- Department of Analytical Chemistry, Institute of Chemistry, State University of São Paulo (UNESP), 14801-970 Araraquara, SP, Brazil E-mail:
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Uwizeyimana H, Wang M, Chen W. Evaluation of combined noxious effects of siduron and cadmium on the earthworm Eisenia fetida. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:5349-5359. [PMID: 28013463 DOI: 10.1007/s11356-016-8220-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/07/2016] [Indexed: 06/06/2023]
Abstract
Environmental contaminants do not often occur as individual chemicals but rather in complex mixtures whose joint effects can create a strong toxicity to surrounding organisms. To determine the combined harmful effects of siduron (herbicide) and cadmium (heavy metal) toward Eisenia fetida earthworms, samples of worm's coelomocytes were subjected to siduron and cadmium (Cd) at sublethal concentrations (lower than LC50)-siduron 0, 0.8, 2.4, and 7.2 μg cm-2 Cd 0, 0.4, 0.8, and 1.6 μg cm-2 in filter paper contact assay, both as individual compounds and combinations. The CI-isobologram model was utilized to reveal the types of toxicological interactions between siduron and cadmium in inducing DNA damage toward earthworms. The results indicated that tail DNA percentage (TDNA %) at individual siduron and cadmium concentrations (with the exception of the lowest concentration of Cd 0.04 μgcm -2) were highly significant compared to those of the control (p < 0.01). Tail moments (TM) at individual Cd concentrations (0.8 and 1.6 μg cm -2) were highly significant compared to those of the control (p < 0.05), while the increase of TM for individual siduron was only significant (p < 0.05) at 7.2 μg cm -2 which is the highest dose/concentration of siduron used in this study. The combinations of siduron and Cd indicated a significant synergism (CI < 1) at the lower effect levels and a significant antagonism (CI > 1) at the higher effect levels. The synergistic effect for a particular combination of chemicals suggests that there might be a possible risk connected to the coincidence of these chemicals.
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Affiliation(s)
- Herman Uwizeyimana
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
| | - Meie Wang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
| | - Weiping Chen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China.
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Bellanger RA, Seeger CM, Smith HE. Safety of Complementary and Alternative Medicine (CAM) Treatments and Practices. SIDE EFFECTS OF DRUGS ANNUAL 2017. [DOI: 10.1016/bs.seda.2017.06.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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