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Shen K, Xia L, Gao X, Li C, Sun P, Liu Y, Fan H, Li X, Han L, Lu C, Jiao K, Xia C, Wang Z, Deng B, Pan F, Sun T. Tobacco as bioenergy and medical plant for biofuels and bioproduction. Heliyon 2024; 10:e33920. [PMID: 39055830 PMCID: PMC11269859 DOI: 10.1016/j.heliyon.2024.e33920] [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: 01/31/2024] [Revised: 06/05/2024] [Accepted: 06/30/2024] [Indexed: 07/28/2024] Open
Abstract
Tobacco, a widely cultivated crop, has been extensively utilized by humans for an extended period. However, the tobacco industry generates a significant amount of organic waste, and the effective utilization of this tobacco waste has been limited. Currently, most tobacco waste is either recycled as reconstituted tobacco sheets or disposed of in landfills. However, tobacco possesses far more potential value than just these applications. This article provides an overview of the diverse uses of tobacco waste in agriculture, medicine, chemical engineering, and energy sectors. In the realm of agriculture, tobacco waste finds primary application as fertilizers and pesticides. In medical applications, the bioactive compounds present in tobacco are fully harnessed, resulting in the production of phenols, solanesol, polysaccharides, proteins, and even alkaloids. These bioactive compounds exhibit beneficial effects on human health. Additionally, the applications of tobacco waste in chemical engineering and energy sectors are centered around the utilization of lignocellulosic compounds and certain fuels. Chemical platform compounds derived from tobacco waste, as well as selected fuel sources, play a significant role in these areas. The rational utilization of tobacco waste represents a promising prospect, particularly in the present era when sustainable development is widely advocated. Moreover, this approach holds significant importance for enhancing energy utilization.
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Affiliation(s)
- Kai Shen
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Liwei Xia
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Xiaoyuan Gao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Cuiyu Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Ping Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Yikuan Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Hu Fan
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Xu Li
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Leyuan Han
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Chengfei Lu
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Kaixuan Jiao
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Chen Xia
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Zhi Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Bin Deng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
| | - Fanda Pan
- Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou, 310024, Zhejiang, China
| | - Tulai Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China
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Ashley DL, Zhu W, Watson CH, Bravo R, Ngac PK, Valentin-Blasini L, Pickworth WB, Kurti AN, Cunningham C, Blount BC. Mouth Level Intake of Nicotine from Three Brands of Little Filtered Cigars with Widely Differing Product Characteristics Among Adult Consumers. Chem Res Toxicol 2023; 36:43-52. [PMID: 36598842 DOI: 10.1021/acs.chemrestox.2c00261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Little filtered cigars are tobacco products with many cigarette-like characteristics. However, despite cigars falling under the U.S. Food and Drug Administration regulatory authority, characterizing flavors, which are still allowed in little filtered cigars, and filter design may influence how people use the products and the resulting exposure to harmful and potentially harmful constituents. We estimated nicotine mouth level intake (MLI) from analyses of little cigar filter butt solanesol levels, brand characteristics, carbon monoxide boost, and puff volume in 48 dual cigarette/cigar users during two repeat bouts of ad lib smoking of three little filtered cigar brands. Mean nicotine MLI for the three brands was significantly different with Swisher Sweets (0.1% ventilation) Cherry at 1.20 mg nicotine, Cheyenne Menthol (1.5%) at 0.63 mg, and Santa Fe unflavored (49%) at 0.94 mg. The association between nicotine MLI and puff volume was the same between Cheyenne Menthol and Santa Fe unflavored. However, these were different from Swisher Sweets Cherry. At least five main factors─flavor, ventilation, filter design, nicotine delivery related to tar, and user puff volume─may directly or indirectly impact MLI and its association with other measures. We found that users of little filtered cigars that have different filter ventilation and flavor draw dissimilar amounts of nicotine from the product, which may be accompanied by differences in exposure to other harmful smoke constituents.
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Affiliation(s)
- David L Ashley
- Department of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, Georgia 30303, United States
| | - Wanzhe Zhu
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, United States Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Clifford H Watson
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, United States Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Roberto Bravo
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, United States Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Phuong K Ngac
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, United States Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Liza Valentin-Blasini
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, United States Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
| | - Wallace B Pickworth
- Battelle Public Health Research Center, Baltimore, Maryland 21209, United States
| | - Allison N Kurti
- Center for Tobacco Products, United States Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Colin Cunningham
- Center for Tobacco Products, United States Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Benjamin C Blount
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, United States Centers for Disease Control and Prevention, Atlanta, Georgia 30341, United States
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White CM, Watson C, Bravo Cardenas R, Ngac P, Valentin-Blasini L, Blount BC, Koopmeiners JS, Denlinger-Apte RL, Pacek LR, Benowitz NL, Hatsukami DK, Donny EC, Carpenter MJ, Smith TT. Early Changes in Puffing Intensity When Exclusively Using Open-Label Very Low Nicotine Content Cigarettes. Nicotine Tob Res 2022; 24:1798-1802. [PMID: 35524988 PMCID: PMC9597006 DOI: 10.1093/ntr/ntac118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 11/14/2022]
Abstract
INTRODUCTION In response to reducing cigarette nicotine content, people who smoke could attempt to compensate by using more cigarettes or by puffing on individual cigarettes with greater intensity. Such behaviors may be especially likely under conditions where normal nicotine content (NNC) cigarettes are not readily accessible. The current within-subject, residential study investigated whether puffing intensity increased with very low nicotine content (VLNC) cigarette use, relative to NNC cigarette use, when no other nicotine products were available. METHODS Sixteen adults who smoke daily completed two 4-night hotel stays in Charleston, South Carolina (U.S.) in 2018 during which only NNC or only VLNC cigarettes were accessible. We collected the filters from all smoked cigarettes and measured the deposited solanesol to estimate mouth-level nicotine delivery per cigarette. These estimates were averaged within and across participants, per each 24-hour period. We then compared the ratio of participant-smoked VLNC and NNC cigarette mouth-level nicotine to the ratio yielded by cigarette smoking machines (when puffing intensity is constant). RESULTS Average mouth-level nicotine estimates from cigarettes smoked during the hotel stays indicate participants puffed VLNC cigarettes with greater intensity than NNC cigarettes in each respective 24-hour period. However, this effect diminished over time (p<0.001). Specifically, VLNC puffing intensity was 40.0% (95% CI: 29.9, 53.0) greater than NNC puffing intensity in the first period, and 16.1% (95% CI: 6.9, 26.0) greater in the fourth period. CONCLUSION Average puffing intensity per cigarette was elevated with exclusive VLNC cigarette use, but the extent of this effect declined across four days. IMPLICATIONS In an environment where no other sources of nicotine are available, people who smoke daily may initially attempt to compensate for cigarette nicotine reduction by puffing on individual cigarettes with greater intensity. Ultimately, the compensatory behavior changes required to achieve usual nicotine intake from VLNC cigarettes are drastic and unrealistic. Accordingly, people are unlikely to sustain attempts to compensate for very low cigarette nicotine content.
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Affiliation(s)
- Cassidy M White
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Clifford Watson
- Centers for Disease Control and Prevention, Division of Laboratory Sciences, Tobacco and Volatiles Branch, Atlanta, GA, USA
| | - Roberto Bravo Cardenas
- Centers for Disease Control and Prevention, Division of Laboratory Sciences, Tobacco and Volatiles Branch, Atlanta, GA, USA
| | - Phuong Ngac
- Centers for Disease Control and Prevention, Division of Laboratory Sciences, Tobacco and Volatiles Branch, Atlanta, GA, USA
| | - Liza Valentin-Blasini
- Centers for Disease Control and Prevention, Division of Laboratory Sciences, Tobacco and Volatiles Branch, Atlanta, GA, USA
| | - Benjamin C Blount
- Centers for Disease Control and Prevention, Division of Laboratory Sciences, Tobacco and Volatiles Branch, Atlanta, GA, USA
| | | | - Rachel L Denlinger-Apte
- Department of Social Sciences and Health Policy, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Lauren R Pacek
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC, USA
| | - Neal L Benowitz
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Dorothy K Hatsukami
- Department of Psychiatry and Behavioral Sciences and Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Eric C Donny
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Matthew J Carpenter
- Department of Psychiatry and Behavioral Sciences, and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
| | - Tracy T Smith
- Department of Psychiatry and Behavioral Sciences, and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
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Watson CH, Yan J, Stanfill S, Valentin-Blasini L, Bravo Cardenas R, Blount BC. A Low-Cost, High-Throughput Digital Image Analysis of Stain Patterns on Smoked Cigarette Filter Butts to Estimate Mainstream Smoke Exposure. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:10546. [PMID: 34639846 PMCID: PMC8508382 DOI: 10.3390/ijerph181910546] [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: 07/28/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 11/28/2022]
Abstract
Standard machine smoking protocols provide useful information for examining the impact of design parameters, such as filter ventilation, on mainstream smoke delivery. Unfortunately, their results do not accurately reflect human smoke exposure. Clinical research and topography devices in human studies yield insights into how products are used, but a clinical setting or smoking a cigarette attached to such a device may alter smoking behavior. To better understand smokers' use of filtered cigarette products in a more natural environment, we developed a low-cost, high-throughput approach to estimate mainstream cigarette smoke exposure on a per-cigarette basis. This approach uses an inexpensive flatbed scanner to scan smoked cigarette filter butts and custom software to analyze tar-staining patterns. Total luminosity, or optical staining density, of the scanned images provides quantitative information proportional to mainstream smoke-constituent deliveries on a cigarette-by-cigarette basis. Duplicate sample analysis using this new approach and our laboratory's gold-standard liquid chromatography/tandem mass spectrometry (LC/MS/MS) solanesol method yielded comparable results (+7% bias) from the analysis of 20 commercial cigarettes brands (menthol and nonmentholated). The brands varied in design parameters such as length, filter ventilation, and diameter. Plots correlating the luminosity to mainstream smoked-nicotine deliveries on a per-cigarette basis for these cigarette brands were linear (average R2 > 0.91 for nicotine and R2 > 0.83 for the tobacco-specific nitrosamine NNK), on a per-brand basis, with linearity ranging from 0.15 to 3.00 mg nicotine/cigarette. Analysis of spent cigarette filters allows exposures to be characterized on a per-cigarette basis or a "daily dose" via summing across results from all filter butts collected over a 24 h period. This scanner method has a 100-fold lower initial capital cost for equipment than the LC/MS/MS solanesol method and provides high-throughput results (~200 samples per day). Thus, this new method is useful for characterizing exposure related to filtered tobacco-product use.
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Affiliation(s)
- Clifford H. Watson
- U.S. Division of Laboratory Sciences, Centers for Disease Control and Prevention, 4770 Buford Highway, NE MS F-55, Atlanta, GA 30341, USA; (J.Y.); (S.S.); (L.V.-B.); (R.B.C.); (B.C.B.)
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