摘要 [目的]探討造紙法再造煙葉提取率的檢測方法，以尋求適合實(shí)驗(yàn)室研究和生產(chǎn)線在線檢測的操作方法。[方法]對比研究殘?jiān)�稱重法、極限提取法和提取液固含量計(jì)算法3種造紙法再造煙葉提取率的測定方法，在實(shí)驗(yàn)室條件下以及實(shí)際生產(chǎn)過程中的應(yīng)用。[結(jié)果]提取液固含量計(jì)算法測定的提取率與殘?jiān)�稱重法和極限提取法測定的提取率之間差異不顯著。殘?jiān)�稱重法不適用于生產(chǎn)線在線檢測，極限提取法和提取液固含量計(jì)算法都適用于生產(chǎn)線在線檢測，極限稱重法檢測過程較繁瑣，提取液固含量計(jì)算法操作簡單快捷。[結(jié)論]將提取液固含量計(jì)算法應(yīng)用于造紙法再造煙葉實(shí)驗(yàn)室研究以及生產(chǎn)線在線檢測中提取率的測定是可行的。
　　關(guān)鍵詞 造紙法再造煙葉；煙梗；煙末；碎片；提取率
　　中圖分類號 S572 文獻(xiàn)標(biāo)識碼 A 文章編號 0517-6611（2016）32-0102-04
　　Determination Methods for Extraction Rate in Reconstituted Tobacco Made by Papermaking Process
　　XUE Dong， YUAN Yi-lai， YUAN Guang-xiang et al （Reconstituted Tobacco Research Instituted of China Tobacco Jiangsu Industrial Co.Ltd.，Huaian， Jiangsu 223002）
　　Abstract [Objective]To discuss the determination methods for extraction rate in reconstituted tobacco made by papermaking process， and to find suitable determination methods for laboratory research and online inspection.[Method] Three determination methods for extraction rate such as classic method of residue weighting， limit extraction method and algorithm for solid content of extracts were chosen， their application in laboratory and productive process was studied contrastively.[Result] The difference among the results of the three methods was small.Classic method of residue weighting was not suitable to be applied in online inspection.The other two methods were applicable to be used in online inspection.However， limit extraction method had accurate results but complicated inspection process， algorithm for solid content of extracts had less accurate results compared to limit extraction method but simple and effective inspection process.[Conclusion] It is practicable to apply algorithm for solid content of extracts in laboratory research and online inspection for extraction rate determination of reconstituted tobacco by papermaking process.
　　Key words Reconstituted tobacco by papermaking process； Tobacco stem； Tobacco scrap； Tobacco dust； Extraction rate
　　提取又稱萃取、浸取、浸提，是造紙法再造煙葉生產(chǎn)工藝中的關(guān)鍵環(huán)節(jié)，它決定了煙草原料中的不溶固形物和可溶物是否能夠充分分離，對后續(xù)工藝會產(chǎn)生一系列的影響[1-3]。提取率高則得到的涂布液充足，有利于生產(chǎn)過程以及產(chǎn)品品質(zhì)的調(diào)控；提取率高同時(shí)也提高了漿料的潔凈程度，有利于基片的抄造以及基片物理性能的改善。造紙法再造煙葉的提取率測定普遍采用的經(jīng)典計(jì)算方法，即殘?jiān)�稱重法[1-提取后殘?jiān)�干物質(zhì)重量/提取原料干物質(zhì)重量）×100%]，該方法需要將原料按批次進(jìn)行處理，因此僅適用于實(shí)驗(yàn)室操作。造紙法再造煙葉生產(chǎn)線為連續(xù)生產(chǎn)，通常還采用了逆流提取的形式，上述經(jīng)典計(jì)算方法并不適用，因此，尋找一種適用于生產(chǎn)線在線檢測的提取率測定方法具有重大的意義。
　　施建在[4]、黃申元[5]設(shè)計(jì)了再造煙葉提取率檢測的極限提取法，并對殘?jiān)�稱重法與極限提取法在實(shí)驗(yàn)室的應(yīng)用效果進(jìn)行了對比，但是對于實(shí)際生產(chǎn)中提取率檢測方法的應(yīng)用少有相關(guān)研究報(bào)道。
　　筆者根據(jù)造紙法再造煙葉提取工藝的特點(diǎn)，設(shè)計(jì)了一種全新的提取率測定方法——提取液固含量計(jì)算法。該方法操作簡單快捷，檢測結(jié)果重現(xiàn)性好，適用于造紙法再造煙葉實(shí)驗(yàn)室研究以及生產(chǎn)線在線檢測中提取率的測定。
　　1 材料與方法
　　1.1 材料

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