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        道真縣初烤煙葉總揮發(fā)酸和揮發(fā)堿及石油醚提取物含量分析

        發(fā)布時間:2019-08-24 來源: 感悟愛情 點擊:


          摘 要: 分析了貴州省道真縣烤煙總揮發(fā)酸、總揮發(fā)堿和石油醚提取物總量特征及在不同等級的差異。結(jié)果表明,道真縣烤煙總揮發(fā)酸含量較低,變幅為0.06%~0.10%,平均值為0.08%,變異系數(shù)為14.41%;總揮發(fā)堿含量較高,變幅為0.26%~0.66%,平均值為0.40%,變異系數(shù)為29.82%;烤煙石油醚提取物含量較高,變幅為5.28%~7.56%,平均值為6.38%,變異系數(shù)為12.43%?倱]發(fā)酸含量以中部煙葉相對較高,總揮發(fā)堿和石油醚提取物含量以上部煙葉相對較高。
          關(guān)鍵詞:烤煙;總揮發(fā)酸;總揮發(fā)堿;石油醚提取物;道真縣
          中圖分類號:S572 文獻標識碼:A DOI編碼:10.3969/j.issn.1006-6500.2013.09.022
          Analysis on the Contents of Total Volatile Acids and Volatile Bases and Petroleum Ether Extract of Flue-cured Tobacco Leaves Grown in Daozhen County
          XIA Ji-ya1,2, DENG Xiao-hua1, DENG Dai-hong2, ZHU Dao-kang2, LEI Jin-xue2, YANG Li-li1
         。1. Hunan Agricultural University, Changsha ,Hunan 410128, China;2. Daozhen County Branch of Guizhou Province Tobacco Companies, Daozhen Guizhou 563500, China)
          Abstract: The total volatile acids, total volatile bases and petroleum ether extract of flue-cured tobacco leaves in Daozhen county of Guizhou province and their differences at different grades were analyzed. The results showed that the contents of total volatile acids of flue-cured tobacco leaves in Daozhen county was lower , ranged from 0.06% to 0.10%, averaged of 0.08% and variation coefficient of 14.41%. The contents of total volatile bases was relatively high, ranged from 0.26% to 0.66%,averaged of 0.40%,raviation coefficient of 29.82%. The contents of petroleum ether extract of flue-cured tobacco leaves was higher, ranged from 5.28%~7.56%,averaged of 6.38%,raviation coefficient of 12.43%. The contents of total volatile acids of central leaves is relatively higher, the contents of total volatile bases and petroleum ether extract of upper leaves was relatively higher.
          Key words: flue-cured tobacco;total volatile acids; total volatile bases;petroleum ether extract;Daozhen county
          煙草中揮發(fā)酸和揮發(fā)堿含量與煙草的內(nèi)在質(zhì)量密切相關(guān),對調(diào)節(jié)煙氣酸堿平衡具有重要的作用[1-3];石油醚提取物被認為是形成煙草香味的重要來源,常作為衡量煙葉中致香物質(zhì)的一項重要指標[4]?緹熆倱]發(fā)酸、總揮發(fā)堿和石油醚提取物的研究一直倍受關(guān)注[5-12],但對貴州省道真縣初烤煙葉的研究報道較少。鑒此,筆者對道真縣初烤煙葉總揮發(fā)酸、總揮發(fā)堿和石油醚提取物含量進行分析,旨在為合理使用道真縣煙葉原料提供參考。
          1 材料和方法
          1.1 材 料
          試驗材料為道真縣2003—2011年初烤煙葉樣品24個?緹煹燃壏謩e為B2F(上橘二)、C2F(中橘二)、C3F(中橘三)、X2F(下橘二),品種為K326、云煙87。
          1.2 方 法
          揮發(fā)酸和揮發(fā)堿采用連續(xù)流動法測定[13],石油醚提取物總量采用索氏提取-稱重法測定[14]。試驗數(shù)據(jù)處理采用Excel2007和SPSS17.0統(tǒng)計分析軟件完成。多重比較采用Duncan’ multiple rang test法。圖1~3中英文大寫字母表示1%差異顯著性,英文小寫字母表示5%差異顯著性。
          2 結(jié)果與分析
          2.1 基本統(tǒng)計特征及變異分析
          對道真縣烤煙的總揮發(fā)酸、總揮發(fā)堿和石油醚提取物總量的基本統(tǒng)計特征值見表1?緹煋]發(fā)酸含量適宜時煙氣吸味醇和、香氣量大,道真縣烤煙總揮發(fā)酸含量平均值為0.08%,低于全國平均值[6]。煙草中揮發(fā)堿含量過高,會使煙氣產(chǎn)生較大的刺激性,而其含量過低,則煙氣平淡,道真縣烤煙總揮發(fā)堿含量為0.40%,是比較高的[7]?緹熓兔烟崛∥锍W鳛樵u價煙草香味的重要指標之一,一般要求含量不低于5.00 %,以高于7.00%為最佳[10],道真縣烤煙石油醚提取物總量為6.38%,高于全國平均值[11]。

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