Pub Date : 2018-11-02DOI: 10.16135/j.issn1002-0861.2018.0486
Sheng Pei-xiu, Xu Ye, Duan Liangyong, G. Yongsheng
{"title":"Research on selection of slim filter tow item based on multiple linear regression","authors":"Sheng Pei-xiu, Xu Ye, Duan Liangyong, G. Yongsheng","doi":"10.16135/j.issn1002-0861.2018.0486","DOIUrl":"https://doi.org/10.16135/j.issn1002-0861.2018.0486","url":null,"abstract":"","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79991014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-26DOI: 10.16135/j.issn1002-0861.2018.0470
Wen Jianhui, L. Jun, Du Wen, Sun Zhiwei, Wang Shi-tai, Zhong Kejun
To understand the retention mechanism of phenol in mainstream cigarette smoke by cellulose acetate(CA) filters, the phenol filtration efficiency, the phenol distribution in the gas phase and particulate phase during filtration and the retention characteristics of the filter for both the gas phase and particulate phenol species were investigated. The distribution of particulate bound phenol as a function of the particle size was examined. The ratio of phenol transferring from the particulate phase to the gas phase during smoke flowing through the CA filter were studied. Retention mechanisms for phenol in the gas phase as well as particulate phase phenol in the filter and the phase transition of phenol were proposed. Phenol filtration efficiency of the cigarette filter was calculated based on the proposed retention mechanisms and compared with available experimental data. The results showed that:1) Comparing with nicotine and the other particulate bound smoke constituents, CA filter exhibited a certain retention selectivity for phenol. 2) Although phenol was mainly bound to the particulate phase of the cigarette mainstream smoke, about 35% of gas phase phenol was found at the tobacco end of the filter, whilst this dropped to approximately 0 at the mouth end of the filter, mostly by selective chemical adsorption. 3) The weighted average smoke particle size and particulate phenol was 0.44 and 0.38 μm, respectively. The filtration efficiency of the filter to particulate phenol was near 40%. 4) About 19% of particulate bound phenol transferred to gas phase when smoke passing the filter, and was selectively adsorbed. 5) The overall filtration efficiency of the CA filter for phenol in mainstream cigarette smoke was 68.7%, with -7.7% variation compared with experimental data. The results demonstrated the phase transition of phenol during the filtration process and the selective retention with varying particle sizes. Our results showed that the application of CA filter in product designs reduces harmful constituents such as phenolic compounds in mainstream cigarette smoke.
{"title":"Retention mechanism of phenol in mainstream cigarette smoke by cellulose acetate filters","authors":"Wen Jianhui, L. Jun, Du Wen, Sun Zhiwei, Wang Shi-tai, Zhong Kejun","doi":"10.16135/j.issn1002-0861.2018.0470","DOIUrl":"https://doi.org/10.16135/j.issn1002-0861.2018.0470","url":null,"abstract":"To understand the retention mechanism of phenol in mainstream cigarette smoke by cellulose acetate(CA) filters, the phenol filtration efficiency, the phenol distribution in the gas phase and particulate phase during filtration and the retention characteristics of the filter for both the gas phase and particulate phenol species were investigated. The distribution of particulate bound phenol as a function of the particle size was examined. The ratio of phenol transferring from the particulate phase to the gas phase during smoke flowing through the CA filter were studied. Retention mechanisms for phenol in the gas phase as well as particulate phase phenol in the filter and the phase transition of phenol were proposed. Phenol filtration efficiency of the cigarette filter was calculated based on the proposed retention mechanisms and compared with available experimental data. The results showed that:1) Comparing with nicotine and the other particulate bound smoke constituents, CA filter exhibited a certain retention selectivity for phenol. 2) Although phenol was mainly bound to the particulate phase of the cigarette mainstream smoke, about 35% of gas phase phenol was found at the tobacco end of the filter, whilst this dropped to approximately 0 at the mouth end of the filter, mostly by selective chemical adsorption. 3) The weighted average smoke particle size and particulate phenol was 0.44 and 0.38 μm, respectively. The filtration efficiency of the filter to particulate phenol was near 40%. 4) About 19% of particulate bound phenol transferred to gas phase when smoke passing the filter, and was selectively adsorbed. 5) The overall filtration efficiency of the CA filter for phenol in mainstream cigarette smoke was 68.7%, with -7.7% variation compared with experimental data. The results demonstrated the phase transition of phenol during the filtration process and the selective retention with varying particle sizes. Our results showed that the application of CA filter in product designs reduces harmful constituents such as phenolic compounds in mainstream cigarette smoke.","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84826967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-26DOI: 10.16135/j.issn1002-0861.2018.0467
Li Lanbo, Han Yanjun, Chen Bo, Liao Huaming, Liu Jingxin
{"title":"Improvement of chain drive system at turning section in HCF-M tray loader","authors":"Li Lanbo, Han Yanjun, Chen Bo, Liao Huaming, Liu Jingxin","doi":"10.16135/j.issn1002-0861.2018.0467","DOIUrl":"https://doi.org/10.16135/j.issn1002-0861.2018.0467","url":null,"abstract":"","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84407331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-19DOI: 10.16135/J.ISSN1002-0861.2018.0462
Zhanguo Wei, D. Chaoqiang, Li Bin, Bao Zichao, Zhang Jiatao, Lin Bei-sen, C. Dexin
{"title":"Effects of combinatory antagonistic bacteria FP246 on tobacco black shank and functional diversity of rhizosphere soil microbial communities","authors":"Zhanguo Wei, D. Chaoqiang, Li Bin, Bao Zichao, Zhang Jiatao, Lin Bei-sen, C. Dexin","doi":"10.16135/J.ISSN1002-0861.2018.0462","DOIUrl":"https://doi.org/10.16135/J.ISSN1002-0861.2018.0462","url":null,"abstract":"","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83294326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-15DOI: 10.16135/J.ISSN1002-0861.2018.0463
Y. Bin, Xiong Kaisheng, Chang Weidong, Tang Jiawei, Xu Helei, Liu Ze, Fu Liang, L. Yongxiang, Li Wenqi, Fang Junjun, Fan Yi, Nie Rong, W. Hong, Ma Ning, Lin Wenqiang
{"title":"Application of tobacco stems processed with different methods for moisture retention","authors":"Y. Bin, Xiong Kaisheng, Chang Weidong, Tang Jiawei, Xu Helei, Liu Ze, Fu Liang, L. Yongxiang, Li Wenqi, Fang Junjun, Fan Yi, Nie Rong, W. Hong, Ma Ning, Lin Wenqiang","doi":"10.16135/J.ISSN1002-0861.2018.0463","DOIUrl":"https://doi.org/10.16135/J.ISSN1002-0861.2018.0463","url":null,"abstract":"","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"s3-46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90838393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-12DOI: 10.16135/J.ISSN1002-0861.2018.0449
Mu Wenjun, L. Qi, Chen Xiuhua, Liao Haijiang, Dong Kun-le, Wang Jianwei, Zhang Youwu, Feng Xiaohu, Zhang Zhigao, W. Libing, Song Jizhen
Tobacco black shank caused by Phytophthora parasitica var. nicotianae (Breda de Hean) is one of the most serious diseases in tobacco growing, and few effective fungicides are available currently. The purpose of this study was to assess the feasibility of using fluazinam to treat tobacco black shank disease. In vitro toxicities of fluazinam to 62 isolates of P. nicotianae were determined by mycelial growth rate method. The EC50 values ranged from 0.294 6 to 2.389 9 μg/mL with a mean of 1.084 0 μg/mL. The sensitivity distribution was unimodal, and there was no resistant isolate in P. nicotianae population. The carboxylic acid amide (CAA) fungicides were single-site in action and activity to oomycetes. The synergistic interactions were tested by Wadley method between fluazinam and dimethomorph, flumorph, mandipropamid, respectively. The mixture containing dimethomoph:fluazinam at 1:2 ratio showed additive actions, with the synergy ratio of 1.2. The mixture containing flumorph and fluazinam at 1:5 ratio had the highest synergy ratio (SR 2.07). Mandipropamid and fluazinam had an additive interaction and the proportion of 2:1 had the lowest EC50 value (0.020 7 μg/mL). This study demonstrated the sensitivity of P. nicotianae to fluazinam, and provided the experimental foundation to use fluazinam for tobacco black shank management.
烟草黑胫病(Phytophthora parasitica var. nicotianae, Breda de Hean)是烟草种植业最严重的病害之一，目前有效的杀菌剂很少。本研究的目的是评价氟西南治疗烟草黑胫病的可行性。采用菌丝生长速率法测定了氟西南对62株烟草假单胞菌的体外毒力。EC50值范围为0.294 6 ~ 2.389 9 μg/mL，平均值为1.084 0 μg/mL。该菌株的敏感性呈单峰型分布，种群中未发现耐药菌株。羧酸酰胺(CAA)杀菌剂对卵菌具有单位点作用和活性。采用Wadley法检测氟西南与吡虫啉、氟虫啉、下颌丙胺的协同作用。以1:2的比例与氟唑西南混合后，具有加性作用，协同比为1.2。氟虫啉与氟西南以1:5的比例混合，协同率最高(SR为2.07)。丙咪酰胺与氟西南呈加性相互作用，比例为2:1时EC50值最低(0.020 7 μg/mL)。本研究证实了烟草假单胞菌对氟唑西南的敏感性，为氟唑西南在烟草黑胫病防治中的应用提供了实验依据。
{"title":"Sensitivity assessment of Phytophthora nicotianae to fungicides of fluazinam and its mixture with carboxylic acid amide","authors":"Mu Wenjun, L. Qi, Chen Xiuhua, Liao Haijiang, Dong Kun-le, Wang Jianwei, Zhang Youwu, Feng Xiaohu, Zhang Zhigao, W. Libing, Song Jizhen","doi":"10.16135/J.ISSN1002-0861.2018.0449","DOIUrl":"https://doi.org/10.16135/J.ISSN1002-0861.2018.0449","url":null,"abstract":"Tobacco black shank caused by Phytophthora parasitica var. nicotianae (Breda de Hean) is one of the most serious diseases in tobacco growing, and few effective fungicides are available currently. The purpose of this study was to assess the feasibility of using fluazinam to treat tobacco black shank disease. In vitro toxicities of fluazinam to 62 isolates of P. nicotianae were determined by mycelial growth rate method. The EC50 values ranged from 0.294 6 to 2.389 9 μg/mL with a mean of 1.084 0 μg/mL. The sensitivity distribution was unimodal, and there was no resistant isolate in P. nicotianae population. The carboxylic acid amide (CAA) fungicides were single-site in action and activity to oomycetes. The synergistic interactions were tested by Wadley method between fluazinam and dimethomorph, flumorph, mandipropamid, respectively. The mixture containing dimethomoph:fluazinam at 1:2 ratio showed additive actions, with the synergy ratio of 1.2. The mixture containing flumorph and fluazinam at 1:5 ratio had the highest synergy ratio (SR 2.07). Mandipropamid and fluazinam had an additive interaction and the proportion of 2:1 had the lowest EC50 value (0.020 7 μg/mL). This study demonstrated the sensitivity of P. nicotianae to fluazinam, and provided the experimental foundation to use fluazinam for tobacco black shank management.","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85629292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-12DOI: 10.16135/j.issn1002-0861.2018.0461
Zang Fukun, Lin Xinsheng, Y. Xinlong, Z. Donghui, L. Xiaoli
{"title":"Potassium citrate induced precipitate formation in tobacco concentrate for reconstituted tobacco","authors":"Zang Fukun, Lin Xinsheng, Y. Xinlong, Z. Donghui, L. Xiaoli","doi":"10.16135/j.issn1002-0861.2018.0461","DOIUrl":"https://doi.org/10.16135/j.issn1002-0861.2018.0461","url":null,"abstract":"","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80067172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-12DOI: 10.16135/J.ISSN1002-0861.2018.0453
Zheng Qing-xia, L. Pingping, Chen Xia, Wang Bing, Z. Niu, Chen Qiansi, Jin Lifeng, Liang Xin, Xu Guoyun, Zhang Hui, Xu Guowang, Zhou Hui-na
{"title":"Metabolomic workflow and analysis of fresh tobacco leaves based on GC-MS and LC-MS","authors":"Zheng Qing-xia, L. Pingping, Chen Xia, Wang Bing, Z. Niu, Chen Qiansi, Jin Lifeng, Liang Xin, Xu Guoyun, Zhang Hui, Xu Guowang, Zhou Hui-na","doi":"10.16135/J.ISSN1002-0861.2018.0453","DOIUrl":"https://doi.org/10.16135/J.ISSN1002-0861.2018.0453","url":null,"abstract":"","PeriodicalId":23146,"journal":{"name":"Tobacco Science & Technology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78709285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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