石楠花提取物挥发性成分分析及在卷烟中的应用

为研究石楠花香味成分,并寻找一种新的天然烟用香料的制备方法,采用同时蒸馏萃取法从石楠花中提取烟用香料,并对提取得到的香料进行了挥发性成分析和卷烟加香试验。结果表明,石楠花中提取物中共鉴定出34种成分,主要为醛、酮、醇和杂环类等重要的烟草香味物质;石楠花提取物可赋予卷烟优雅的香韵,提高烟气温润感,降低刺激性,提高抽吸舒适度。石楠花提取物可作为一种新型的天然香料用于卷烟加香。     

酯类与酮类烟用香料的化学合成及加香应用探究

烟用香料是生产烟草产品的“灵魂”，是形成烟香风格特色的奥秘之处。酯类和酮类烟用香料在烟草中的加香试验，结果表明这些香料在提高烟草香气质和烟气浓度、降低刺激以及改善口感等方面具有一定的效果，而且混合使用后效果会更佳。这为烟用香料的化学合成及卷烟加香提供了一定的指导作用。     

生姜杆叶提取物香味成分分析及在卷烟中的应用

为寻找一种新的生姜杆叶利用和烟草香料制备途径,采用超临界CO2萃取法提取生姜杆叶精油,用气相色谱-质谱法分析了精油中的挥发性成分,并将提取物精油进行了卷烟加香应用实验。结果表明,生姜杆叶精油中共鉴定出38种成分,主要为萜烯类、醇类等重要的烟草香味物质;生姜杆叶精油应用于卷烟加香,具有改善卷烟香气、丰富烟香、去除杂气、改善口感的作用。生姜杆叶精油可作为一种新型天然香料应用于卷烟加香。     

蚕沙叶绿素废液中卷烟香料的提取及应用

为充分利用蚕沙叶绿素废液,并寻找一种新的天然卷烟香料的制备方法,采用同时蒸馏萃取法从提取叶绿素后的蚕沙废液中提取卷烟香料,并对提取得到的香料进行了挥发性成分分析和卷烟加香试验。结果表明,蚕沙叶绿素废液提取物中共鉴定出22种成分,主要为酮类和萜烯类等重要的烟草香味物质;蚕沙叶绿素废液提取物对提高卷烟香气质、增加烟气甜润度和回甜生津感、柔和烟气、减少杂气、改善余味有明显效果。蚕沙叶绿素废液提取物可作为一种新型天然香料用于卷烟加香。     

香精香料技术在中式低焦油卷烟香味补偿中的研究进展

降低烟气焦油量是烟草工业的发展趋势,但降焦必然会对卷烟制品的抽吸品质尤其是香吃味造成很大的影响。从加香加料配方设计、烟用香料开发、特殊加香补偿技术三个方面,综述香精香料技术在中式低焦油卷烟制品香味补偿中的研究进展。     

2-甲基-3-乙基马来酰亚胺合成及应用研究

采用新颖的合成方法以马来酸酐为原料通过四步反应合成2-甲基-3-乙基马来酰亚胺,所有化合物经过元素分析得到确认。将目标产物应用于卷烟加香评吸试验,结果表明其可以协调香气,丰富及饱满烟草本香,提升烤烟香韵及烟气浓度,改善烤烟品质。合成的该新型香料经审核批准后可作为香原料应用于卷烟加香中。     

超临界CO2萃取烟草源香料的夹带剂比较

为烟草高附加值成分提取和烟草源香料制备选择优良夹带剂,分别用5种不同极性夹带剂超临界CO₂萃取废弃烟末,将萃取物进行GC-MS分析,比较不同夹带剂对萃取得率和各类香味物质萃取得率的影响,并进行卷烟加香感官评价试验。使用5种夹带剂后萃取得率和各类香味物质萃取得率均高于无夹带剂模式。这5种夹带剂萃取物以相同加香量添加于卷烟,加香后卷烟主体香韵不变。不同夹带剂对各类化学成分的萃取影响较大,选择相应的夹带剂可对烟草香味成分进行有效萃取;无水乙醇是较优的夹带剂,正己烷更利于烷烃化合物的萃取,二丙二醇和二丙二醇甲醚对烟碱的萃取效果较好。     

新植二烯的合成研究

以生物技术转化的天然植醇为原料一步法合成新植二烯,所得化合物经过核磁、气质联用、元素分析确认。将目标产物应用于卷烟加香评吸试验,结果表明具有增加、丰富及饱满烟草本香,提升烤烟香韵及烟气浓度,改善烤烟品质的效果。该新型合成香料可作为香原料应用于香精中。     

桑枝化学成分提取及其在卷烟中的应用

采用同时蒸馏萃取法制备桑枝挥发油,然后应用于卷烟中。研究了同时蒸馏萃取桑枝挥发油的工艺,并以气相色谱-质谱法(GC-MS)对其化学成分进行分离和鉴定。结果表明,桑枝挥发油主要成分为α-蒎烯、β-蒎烯、月桂烯、β-罗勒烯、罗汉柏烯、β-金合欢烯、8-愈创木烯、α-古芸烯、β-花柏烯、柏木脑等物质;将该香料用于卷烟加香,桑枝挥发油加香浓度为0.5‰~1.0‰,烟草香味成分具有改善香气质和香气量、丰富烟香、减轻刺激,甜润烟气,改善卷烟余味,且与烟香较协调的作用。     

相关中国专利

本发明涉及含有下列成分的加香漂白组合物：a．选自下列的漂白体系：（i）含量为0．1％～60％（质量）的过水合物，与之结合有含量为0．1％～60％（质量）的漂白活性剂，（ii）含量为0．1％～60％（质量）的预制过酸，和它们的任何混合物，其中所述的过水合物和／或所述的预制过酸被涂覆；和b．含量为0．05％～2％（质量）的香精，该香精含有选自下列的合成香料：伯醇和仲醇、脂肪醛、氢化肉桂醛、除了水杨酸酯之外的酯、不饱和酮以及它们的混合物，其中所述的合成香料在香精中的总质量至少是香精质量的30％。加香漂白组合物还优选含有螯合剂，其进一步增强了香精储藏的稳定性。     

Maillard反应及其产物在烟草加香中的作用

制备了甘氨酸等18种单一氨基酸与葡萄糖进行的美拉德反应产物以及复合氨基酸粉．动物水解蛋白与葡萄糖进行的美拉德反应产物,筛选出了两组适合于烤烟加香的混合氨基酸(混合氨基酸A,混合氨基酸B),并以混合氨基酸A为例．初步研究了反应条件(pH、反应温度等)对反应产物性质(如香味特征)的影响。     

Effect of two-stage dehydration on retention of characteristic flavor components of flue-cured tobacco in rotary dryer

Two-stage dehydration method of flue-cured tobacco in rotary dryer was experimentally evaluated and compared to the single-stage dehydration process. The characteristic flavor components in dried cut tobacco, including major Maillard reaction compounds and carotenoid degradation products, as well as drying rate were analyzed for different two-stage dehydration operations. The results showed that both the pre-drying temperature and intermediate moisture content had a significant effect on the overall drying rate of cut tobacco during two-stage drying. On the other hand, the retention of characteristic flavor components in tobacco, especially Maillard reaction compounds retention, was influenced significantly by the final drying temperature as well as intermediate moisture content. The 10°C increase in the final drying temperature from 100 to 110°C reduced the retentions of Maillard reaction compounds and carotenoid degradation products by 14.5 and 9.4%, respectively. Change of intermediate moisture contents from 19 to 15% reduced the Maillard reaction compounds retention by 14.7%. Given the consideration of characteristic flavor components’ retention and drying process efficiency, two-stage dehydration of cut tobacco in rotary dryer could reach a better performance as compared with the single-stage dehydration. The cylinder-wall temperature combination of 140/100°C with the 17% intermediate moisture content could be used as the optimal two-stage condition for the investigated flue-cured tobacco.     

1－异丁氧基－1－乙醇乙酸酯的合成

以三聚乙醛、异丁醇与无水乙酸钠为反应物，［Ｎ（Ｂｕ）＿４］Ｂｒ为相转移催化剂，合成了１－异丁氧基－１－乙醇乙酸酯，产率达５０％。该化合物具有清新愉快的果香气，富有浓郁自然特色。     

3-异烷氧基噻吩的合成

以CuB r为催化剂,NMP为溶剂,在110℃下,3-溴噻吩与过量的甲醇钠反应2.5 h生成3-甲氧基噻吩,产率为82%。再以无水NaHSO4为催化剂,在108~115℃下,3-甲氧基噻吩分别与异丁醇、异戊醇、异辛醇发生取代反应合成了3-(2-甲基丙氧基)噻吩、3-(3-甲基丁氧基)噻吩、3-(2-乙基己氧基)噻吩,反应时间分别为:3、3.5、4h,收率分别为72%、67%、63%。这些化合物结构都通过IR、1HNMR和MS进行了表征,并对其进行了初步香味评价,结果表明,它们都具有基本肉香味的特征。     

香料苹果酯-B的合成研究

苹果酯-B广泛应用于花香型和果香型香精的调配，国内市场前景广泛。利用乙酰乙酸乙酯和丙二醇在对甲基苯磺酸催化下缩合，用甲苯作溶剂，制得苹果酯-B，产率为55％-57％，纯度为82．01％。     

动态皂化萃取法提取茄尼醇的研究

建立了以废次烟叶粗提物为原料,采用乙醇和溶剂油动态皂化方法萃取茄尼醇的工艺。讨论了影响动态皂化反应的主要因素,确定了优化的工艺参数:氢氧化钠为皂化试剂,6号溶剂油为烟叶粗提物的溶剂,体积分数为80%乙醇为氢氧化钠的溶剂,氢氧化钠与烟叶粗提物浸膏的质量比为1∶4,皂化反应时间为2.5 h。结果表明,在优化的条件下,经过动态皂化处理,茄尼醇收率119.4%,比经常规的先皂化后萃取处理收率增加9.3%;烟叶粗提物中的茄尼醇质量分数达到19.6%,比常规皂化处理增加2.94%。此外,采用动态皂化减少了工序,节省了萃取溶剂消耗量,因此该法是一种高效快速萃取茄尼醇的方法。     

Synergistic effect and quantification of 5'-ribonucleotides in a chicken soup

The international and national regulation permits the addition of flavour enhancers such as monosodium glutamate (MSG) and inosinic and guanilic acids and their fosfated salts (IMP or GMP, respectively) alone or combined to dehydrated mixtures of broths and soups in order to obtain a synergistic. The objectives of this study were: (1) to determine, through a sensorial panel, the synergistic effect on the flavour of a dehydrated chicken soup to which flavour enhancers were added and (2) quantify the 5'-ribonucleotides in such matrix. The intensity of the chicken flavour was determined using a previously trained 6-member panel. The 5'-ribonucleotidos were determined using the HPLC technique. The results using the panel demonstrated that the combination of GMS, IMF and GMF used potentiates significantly (p < 0.05) the flavour of the dehydrated chicken soup, which allows the use of less quantity of them to obtain the same effect on the flavour. The chemical analysis of the 5'-ribonucleotidos in the dehydrated chicken soup reflected a percentage of recovery of 93.6% for MSG and 90.5% for IMF.     

Drying kinetics study of irregular fibril materials in a “differential” laboratory rotary dryer: Case study for cut tobacco

Rotary dryers are commonly used in the modern large-scale tobacco drying industry that consumes huge amounts of energy. In fact, rotary dryers are commonly used in chemical industry in general. It is difficult to investigate the drying behavior at industrial scale. A “differential” laboratory rotary dryer was therefore designed and tested. The large diameter of the industrial dryer was preserved, but the width was a section of the industrial dryer. The drying characteristics of cut tobacco from top leaves and bottom leaves with initial moisture contents (22.5?±?1.0% on the wet basis) were studied in the “differential” dryer at air temperatures of 65, 85, 105, 125, and 145°C, respectively. The results show that increasing drying temperature accelerated the drying process, whereas the surface temperatures of the cut tobacco samples stayed in the temperature range of 48–71°C when their moisture contents were reduced to 12.0?±?1.0% (wb). This 12.0% (wb) was required by commercial operations. Uniquely, the drying kinetics was captured using the reaction engineering approach (REA). Although different settings were applied, the model can be used to describe all the data well. The unique relationship between the normalized activation energy and the moisture content is approximated which is independent of the drying air temperature and the tobacco origin. The different drying behaviors for the cut tobacco from top leaves and bottom leaves can be attributed to their different equilibrium isotherms. Through controlling the drying time as predicted by REA model, the outlet moisture contents of cut tobacco from top leaves dried at 95°C/RH0.034/320?s and 115°C/RH0.017/250?s were shown to be 12.3 and 11.8% (wb), with the relative deviations of 2.5 and 1.7%, respectively, and these were within the industrial permissible range.     

连续化微反应技术在香料、香精和化妆品合成中的应用

作为一项全新的过程强化技术,连续化微反应技术在香料、香精和化妆品合成中的应用与日俱增。综述了近年来微反应技术在香料合成研发和生产方面的进展。与传统的间歇式反应器不同,连续化微通道反应器的主要特点是连续进料、传质换热能力大大加强以及可以精确控制反应参数等。该技术在许多香料合成常用的反应中都体现出了常规反应器无法比拟的优势,同时在合成香料工业应用的成功范例也展示了微反应技术可以预见的广阔前景。     

贵州地衣香料的开发研究

地衣植物的扁枝衣属,树花属的扁枝梅衣,拟树花,杯,树花日本变种、扁条梅及经溶剂提了后,制得地衣浸膏,开发一条产品质量好,成本低的工艺路线,使制得的产品具有诱人的苔青香气,浸膏香,气并可应用于烟用香精等产品。