Application Of Several Agricultural Waste Fibers In Reconstituted Tobacco Leaves

This paper mainly studies on the application of several kinds of agricultural waste fibers as additional plant fibers and the application of hemp stalk core particles as tobacco flavors and fragrances carrier in the reconstituted tobacco leaves.By means of analyses and observation of the physical and chemical properties of reconstituted tobacco raw materials,the microstructure also fiber quality of the pulp obtained from different pulping,effects of the addition of agricultural waste fibers on reconstituted tobacco,and the evaluation of hemp stalk core particles as a tobacco flavor and fragrance carrier for improving the aroma quality,the aim of this study is to provide a theoretical basis for solving the problem of shortage of raw materials,expanding the source of additional fibers,adjusting the aroma components and regulating the aroma release of reconstituted tobacco,so as to achieve the goal of reconstituted tobacco with good quality performance,and of lower cost as well as improvement efficiency.The main results were presented as follows:1.The fiber content of tobacco raw materials was lower than non-fiber's.The tobacco fibers were short and thick,and the content of fine fiber was high.The cellulose content and fiber length of hemp stalk core,rice straw,bagasse and softwood were much higher than those of tobacco's.2.The thickness,the basis weight and the bulk of the paper base were not changed with the increase of the proportion of plant fiber,but the tensile strength and coating rate increased obviously correspondingly.That is,the addition of plant fibers was beneficial to improve the tensile strength and the liquid absorption performance.Coating resulted in the increase of the thickness and the quantitative of the reconstituted tobacco,but the obvious decrease of the bulk and tensile strength,especially the tensile strength with a decrement about 0.2 kN/m.The paper base with an addition of 5%hemp core APMP or NaOH-AQ pulp,also 7.5%rice straw or wheat straw alkali-oxygen pulp and bagasse pulp as well could be close to and even reached the tensile strength of reconstituted tobacco with 10%bleached softwood pulp in production line.3.Through the observation of the surface structure of the reconstituted tobacco leaves,APMP pulp and NaOH-AQ pulp existed mostly in the single fiber form which were long and thick,and are closely intertwined with the tobacco pulp.The tobacco pulp and fine fibers are filled with the surface voids.The surface pores of the reconstituted tobacco leaves showed a progressive reduction from rice straw pulp,bagasse pulp to wheat straw pulp.The leaves with softwood pulp displayed fibers interwinded with one another,and the smooth surface with gaps.4.In the conventional chemical aspects of the reconstituted tobacco sequence of total sugar and reducing sugar,potassium,chlorine,total alkaloid and total nitrogen were decreased successively in accordance with the hemp core mechanical pulp,APMP pulp and NaOH-AQ pulp,straw pulp,bagasse pulp,softwood pulp,in which the changes of chloride,total nitrogen and total plant alkaloids were fluctuating,in comparison with the big fluctant total sugar and reducing sugar.5.Hemp core is loose and porousin structure,being beneficial to the absorption of the coating powder.The suitable absorption ratio(mass ratio)was 1:7.After absorbing the coating liquid on the core particles,the content of the aroma components of the crustacean core particles is higher than that before the liquid,mainly on the phenols,aldehydes and alcohols,while the contents of the esters and the acid compounds are decreased.The content of aroma components in reconstituted tobacco leaves was increased by adding the core particles.