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Li Q, He Y, Yan J, Li Y, Feng J, Wang Z. From rosin to novel bio-based silicone rubber: a review. Biomater Sci 2023; 11:7311-7326. [PMID: 37847519 DOI: 10.1039/d3bm01308a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Rosin is a characteristic natural renewable resource. In view of the unique hydrogenated phenanthrene ring skeleton structure of rosin, it can be designed and synthesized to modify silicone rubber for improving its mechanical properties, thermal stability, and other properties. In this paper, the research progress of silicone rubber modified by rosin and its derivatives is reviewed, including internal or surface modification of room temperature or high temperature vulcanized silicone rubber. The different chemical modifications and polymerization pathways to obtain bio-based silicone rubber (e.g. rosin-based silicone cross-linking agent, filler compound rosin-based silicone cross-linking agent, rosin-based polymer, and rosin quaternary ammonium salt bifunctional antibacterial coating) are discussed and its research prospect is reviewed. Overall, the present review article will provide a quantitative experimental basis for rosin to produce bio-renewable multifunctional silicone rubber to increase our level of understanding of the behavior of this important class of silicone rubber and other similar bio-based polymers.
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Affiliation(s)
- Qiaoguang Li
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510000, China
| | - Yuxin He
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510000, China
| | - Jie Yan
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510000, China
| | - Yongquan Li
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510000, China.
| | - Junfeng Feng
- College of Chemical Engineering, Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, China.
| | - Zhihong Wang
- Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou, 510520, China.
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2
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Jadhav PD, Shim YY, Paek OJ, Jeon JT, Park HJ, Park I, Park ES, Kim YJ, Reaney MJT. A Metabolomics and Big Data Approach to Cannabis Authenticity (Authentomics). Int J Mol Sci 2023; 24:ijms24098202. [PMID: 37175910 PMCID: PMC10179091 DOI: 10.3390/ijms24098202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 04/13/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
With the increasing accessibility of cannabis (Cannabis sativa L., also known as marijuana and hemp), its products are being developed as extracts for both recreational and therapeutic use. This has led to increased scrutiny by regulatory bodies, who aim to understand and regulate the complex chemistry of these products to ensure their safety and efficacy. Regulators use targeted analyses to track the concentration of key bioactive metabolites and potentially harmful contaminants, such as metals and other impurities. However, the metabolic complexity of cannabis metabolic pathways requires a more comprehensive approach. A non-targeted metabolomic analysis of cannabis products is necessary to generate data that can be used to determine their authenticity and efficacy. An authentomics approach, which involves combining the non-targeted analysis of new samples with big data comparisons to authenticated historic datasets, provides a robust method for verifying the quality of cannabis products. To meet International Organization for Standardization (ISO) standards, it is necessary to implement the authentomics platform technology and build an integrated database of cannabis analytical results. This study is the first to review the topic of the authentomics of cannabis and its potential to meet ISO standards.
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Affiliation(s)
- Pramodkumar D Jadhav
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Youn Young Shim
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
- Prairie Tide Diversified Inc., Saskatoon, SK S7J 0R1, Canada
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea
| | - Ock Jin Paek
- Herbal Medicines Research Division, Ministry of Food and Drug Safety, Cheongju 28159, Republic of Korea
| | - Jung-Tae Jeon
- Yuhan Care R&D Center, Yuhan Care Co., Ltd., Yongin 17084, Republic of Korea
| | - Hyun-Je Park
- Yuhan Care R&D Center, Yuhan Care Co., Ltd., Yongin 17084, Republic of Korea
- Yuhan Natural Product R&D Center, Yuhan Care Co., Ltd., Andong 36618, Republic of Korea
| | - Ilbum Park
- Yuhan Care R&D Center, Yuhan Care Co., Ltd., Yongin 17084, Republic of Korea
| | - Eui-Seong Park
- Yuhan Care R&D Center, Yuhan Care Co., Ltd., Yongin 17084, Republic of Korea
| | - Young Jun Kim
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea
| | - Martin J T Reaney
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
- Prairie Tide Diversified Inc., Saskatoon, SK S7J 0R1, Canada
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea
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3
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Vreeke S, Faulkner DM, Strongin RM, Rufer E. A First-Tier Framework for Assessing Toxicological Risk from Vaporized Cannabis Concentrates. TOXICS 2022; 10:771. [PMID: 36548603 PMCID: PMC9782653 DOI: 10.3390/toxics10120771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/23/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Vaporization is an increasingly prevalent means to consume cannabis, but there is little guidance for manufacturers or regulators to evaluate additive safety. This paper presents a first-tier framework for regulators and cannabis manufacturers without significant toxicological expertise to conduct risk assessments and prioritize additives in cannabis concentrates for acceptance, elimination, or further evaluation. Cannabinoids and contaminants (e.g., solvents, pesticides, etc.) are excluded from this framework because of the complexity involved in their assessment; theirs would not be a first-tier toxicological assessment. Further, several U.S. state regulators have provided guidance for major cannabinoids and contaminants. Toxicological risk assessment of cannabis concentrate additives, like other types of risk assessment, includes hazard assessment, dose-response, exposure assessment, and risk characterization steps. Scarce consumption data has made exposure assessment of cannabis concentrates difficult and variable. Previously unpublished consumption data collected from over 54,000 smart vaporization devices show that 50th and 95th percentile users consume 5 and 57 mg per day on average, respectively. Based on these and published data, we propose assuming 100 mg per day cannabis concentrate consumption for first-tier risk assessment purposes. Herein, we provide regulators, cannabis manufacturers, and consumers a preliminary methodology to evaluate the health risks of cannabis concentrate additives.
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Affiliation(s)
| | | | - Robert M. Strongin
- Department of Chemistry, Portland State University, Portland, OR 97207, USA
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4
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Kovach AL, Carter RR, Thornburg JW, Wiethe R, Fennell TR, Wiley JL. Thermal Degradants Identified from the Vaping of Vitamin E Acetate. J Anal Toxicol 2022; 46:750-756. [PMID: 34666345 PMCID: PMC9375236 DOI: 10.1093/jat/bkab109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/04/2021] [Accepted: 10/19/2021] [Indexed: 12/22/2022] Open
Abstract
Studies have suggested that vitamin E acetate (VEA), when used in an electronic vaping device, undergoes thermal degradation and is considered one of the main contributors in e-cigarette or vaping product use-associated lung injury (EVALI). Using a Borgwaldt 5.1 linear smoker, a SVS250 Electronic Vaporizer and two types of tank systems, VEA was analyzed for degradation products produced via the Cooperation Centre for Scientific Research Relative to Tobacco method 81 when the filter containing vaporized VEA was extracted using acetonitrile. Two of the major products identified were 2,3,5,6-tetramethyl-1,4-benzoquinone and 2,6,10,14-tetramethyl-1-pentadecene, which were confirmed using analytical standards and gas chromatography-high-resolution mass spectrometry (GC-HRMS). Additional synthesis of 4-acetoxy-2,3,5,6-tetramethyl-2,4-cyclohexadienone and subsequent characterization using nuclear magnetic resonance and GC-HRMS suggested that this is not one of the products produced. Identification of these degradants will allow future studies to quantify and examine the degradants in vivo and in vitro as biomarkers for exposure and toxicity assessment.
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Affiliation(s)
- Alexander L Kovach
- Discovery Sciences, RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Randi R Carter
- Discovery Sciences, RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Jonathan W Thornburg
- Discovery Sciences, RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Robert Wiethe
- Discovery Sciences, RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Timothy R Fennell
- Discovery Sciences, RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - Jenny L Wiley
- Discovery Sciences, RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA
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Pattnaik F, Nanda S, Mohanty S, Dalai AK, Kumar V, Ponnusamy SK, Naik S. Cannabis: Chemistry, extraction and therapeutic applications. CHEMOSPHERE 2022; 289:133012. [PMID: 34838836 DOI: 10.1016/j.chemosphere.2021.133012] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 11/01/2021] [Accepted: 11/18/2021] [Indexed: 05/27/2023]
Abstract
Cannabis, a genus of perennial indigenous plants is well known for its recreational and medicinal activities. Cannabis and its derivatives have potential therapeutic activities to treat epilepsy, anxiety, depression, tumors, cancer, Alzheimer's disease, Parkinson's disease, to name a few. This article reviews some recent literature on the bioactive constituents of Cannabis, commonly known as phytocannabinoids, their interactions with the different cannabinoids and non-cannabinoid receptors as well as the significances of these interactions in treating various diseases and syndromes. The biochemistry of some notable cannabinoids such as tetrahydrocannabinol, cannabidiol, cannabinol, cannabigerol, cannabichromene and their carboxylic acid derivatives is explained in the context of therapeutic activities. The medicinal features of Cannabis-derived terpenes are elucidated for treating several neuro and non-neuro disorders. Different extraction techniques to recover cannabinoids are systematically discussed. Besides the medicinal activities, the traditional and recreational utilities of Cannabis and its derivatives are presented. A brief note on the legalization of Cannabis-derived products is provided. This review provides comprehensive knowledge about the medicinal properties, recreational usage, extraction techniques, legalization and some prospects of cannabinoids and terpenes extracted from Cannabis.
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Affiliation(s)
- Falguni Pattnaik
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India; Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Sonil Nanda
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | | | - Ajay K Dalai
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
| | - Vivek Kumar
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Senthil Kumar Ponnusamy
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Tamil Nadu, India
| | - Satyanarayan Naik
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
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Meehan-Atrash J, Rahman I. Novel Δ 8-Tetrahydrocannabinol Vaporizers Contain Unlabeled Adulterants, Unintended Byproducts of Chemical Synthesis, and Heavy Metals. Chem Res Toxicol 2021; 35:73-76. [PMID: 34889611 DOI: 10.1021/acs.chemrestox.1c00388] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cannabis e-cigarettes containing Δ8-tetrahydrocannabinol (Δ8-THC) produced synthetically from hemp-derived cannabidiol (CBD) have recently risen in popularity as a legal means of cannabis consumption, but questions surrounding purity and unlabeled additives have created doubts of their safety. Herein, NMR, GC-MS, and ICP-MS were used to analyze major components of 27 products from 10 brands, and it was determined none of these had accurate Δ8-THC labeling, 11 had unlabeled cutting agents, and all contained reaction side-products including olivetol, Δ4(8)-iso-tetrahydrocannabinol, 9-ethoxyhexahydrocannabinol, Δ9-tetrahydrocannabinol (Δ9-THC), heavy metals, and a novel previously undescribed cannabinoid, iso-tetrahydrocannabifuran.
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Affiliation(s)
- Jiries Meehan-Atrash
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Irfan Rahman
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States
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Ciolino LA, Falconer TM, Ranieri TL, Brueggemeyer JL, Taylor AM, Mohrhaus AS. EVALI Vaping Liquids Part 2: Mass Spectrometric Identification of Diluents and Additives. Front Chem 2021; 9:746480. [PMID: 34760870 PMCID: PMC8573289 DOI: 10.3389/fchem.2021.746480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/23/2021] [Indexed: 11/13/2022] Open
Abstract
The vaping liquid additive vitamin E acetate (VEA) was strongly linked to the 2019 United States nationwide outbreak of pulmonary lung illness (EVALI) associated with e-cigarettes or vaping liquids. Our laboratory received over 1,000 vaping liquid products for identification of the vaping liquid additives, including hundreds of vaping products from EVALI patients. In this work, we present results obtained for the GC-MS identification of numerous vaping liquid additives in a large subset of ca. 300 Cannabis vaping liquids, including vitamin E acetate, medium chain triglycerides oil (MCT oil), polyethylene glycols, squalane, triethyl citrate, dipropylene glycol dibenzoate (DPG dibenzoate), pine rosin acids, pine rosin methyl esters, and sucrose acetate isobutyrate (SAIB). Confirmation of DPG dibenzoate and SAIB using LC-HRMS is also presented. GC-MS analysis for additives identified as the parent compounds was conducted after separation on a commercial 5% phenyl phase. GC-MS analysis for additives identified as the trimethylsilyl derivatives was conducted after separation on a commercial 35% silphenylene phase. LC-HRMS analysis was conducted using gradient elution with either C18 or phenyl-hexyl phases and determination of exact masses for the target compounds. In addition to providing rapid methods for the identification of vaping liquid additives, this work highlights the variety of Cannabis vaping liquid additives in current use.
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Affiliation(s)
- Laura A Ciolino
- Forensic Chemistry Center, United States Food and Drug Administration, Cincinnati, OH, United States
| | - Travis M Falconer
- Forensic Chemistry Center, United States Food and Drug Administration, Cincinnati, OH, United States
| | - Tracy L Ranieri
- Forensic Chemistry Center, United States Food and Drug Administration, Cincinnati, OH, United States
| | - Jana L Brueggemeyer
- Forensic Chemistry Center, United States Food and Drug Administration, Cincinnati, OH, United States
| | - Allison M Taylor
- Forensic Chemistry Center, United States Food and Drug Administration, Cincinnati, OH, United States
| | - Angela S Mohrhaus
- Forensic Chemistry Center, United States Food and Drug Administration, Cincinnati, OH, United States
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8
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Mallampati S, McDaniel C, Wise AR. Strategies for Nonpolar Aerosol Collection and Heavy Metals Analysis of Inhaled Cannabis Products. ACS OMEGA 2021; 6:17126-17135. [PMID: 34250369 PMCID: PMC8264932 DOI: 10.1021/acsomega.1c02740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 06/09/2021] [Indexed: 05/10/2023]
Abstract
The rapid growth of inhalable cannabis concentrates raises questions about the safety of acute and chronic exposure to these aerosol mixtures. Due to the nonpolar nature of the aerosol mixture created from cannabis vapor cartridges, traditional aqueous-based capture methods used in e-cigarette or tobacco cigarette studies for analysis of metals are insufficient. Moreover, hydrophobic cannabis concentrates are not miscible with dilute aqueous acids and therefore not ideal for metal spiking unlike electronic nicotine delivery systems. This study describes a method of spiking nonaqueous matrices with aqueous metals standards to investigate aerosolization and recovery of the metals. It also compares various methods for nonpolar aerosol capture and subsequent analysis of 10 metals (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, and Sn) in two model cannabis matrices, flower and concentrate. Spiked cannabis concentrates were vaped in commercially available cartridges, and their aerosol mixtures were investigated for recovery of heavy metals via ICP-MS. Spiked flower samples were also combusted to compare collection rates of the 10 metals. Results show that not all metals that are present in the concentrate or flower can be fully recovered in the aerosol capture processes at standard voltage settings or combustion temperatures. These studies also demonstrate the importance of a nonpolar solvent as part of the aerosol collection to increase the recovery of some metals. The high concentration of some metals seen in the concentrate suggests that the devices themselves are potential routes of exposure. The ICP-MS analysis method was further validated by evaluating different parameters including linearity, matrix effect, limit of detection, limit of quantitation, and repeatability.
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Affiliation(s)
| | - Charles McDaniel
- Medicine
Creek Analytics, 3700
Pacific Highway East, Fife, Washington 98424, United States
- The
Evergreen State College, 2700 Evergreen Parkway NW, Olympia, Washington 98505, United States
| | - Amber R. Wise
- Medicine
Creek Analytics, 3700
Pacific Highway East, Fife, Washington 98424, United States
- . Tel.: +1-253-382-6900
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Meehan-Atrash J, Luo W, McWhirter KJ, Dennis DG, Sarlah D, Jensen RP, Afreh I, Jiang J, Barsanti KC, Ortiz A, Strongin RM. The influence of terpenes on the release of volatile organic compounds and active ingredients to cannabis vaping aerosols. RSC Adv 2021; 11:11714-11723. [PMID: 35423635 PMCID: PMC8695911 DOI: 10.1039/d1ra00934f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/04/2021] [Indexed: 12/11/2022] Open
Abstract
Cannabinoid and VOC emissions from vaping cannabis concentrates vary depending on terpene content, power level and consumption method.
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Affiliation(s)
| | - Wentai Luo
- Department of Chemistry
- Portland State University
- Portland
- USA
- Department of Civil and Environmental Engineering
| | - Kevin J. McWhirter
- Department of Civil and Environmental Engineering
- Portland State University
- Portland
- USA
| | - David G. Dennis
- Roger Adams Laboratory
- Department of Chemistry
- University of Illinois
- Urbana
- USA
| | - David Sarlah
- Roger Adams Laboratory
- Department of Chemistry
- University of Illinois
- Urbana
- USA
| | | | - Isaac Afreh
- Chemical and Environmental Engineering
- Center for Environmental Research and Technology
- University of California-Riverside
- Riverside
- USA
| | - Jia Jiang
- Chemical and Environmental Engineering
- Center for Environmental Research and Technology
- University of California-Riverside
- Riverside
- USA
| | - Kelley C. Barsanti
- Chemical and Environmental Engineering
- Center for Environmental Research and Technology
- University of California-Riverside
- Riverside
- USA
| | - Alisha Ortiz
- Department of Chemistry
- Portland State University
- Portland
- USA
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