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烟叶中的色素大致来源于,天然存在的色素,如叶绿素,类胡萝卜素及叶黄素等。它们在烟叶中的含量随烟草的成熟阶段、施肥条件、气候土质及烟草的加工调制技术有关;各种类型的烟叶如烤烟、晾晒烟等在烘烤、晾晒等加工过程中,存在于烟叶中的糖分(或在烟叶回潮中加入糖分)和氨基酸、多肽及蛋白质等通过美拉德(Maillard)反应发生褐变产生的类黑精(Melanoidin),从而使烟叶颜色转深;烟叶中的酚、单宁一类物质在烟叶加工过程中所发生的酶促氧化褐变作用。本文报道了在碱性条件和有KI存在的条件下,采用过氧化氢氧化上述色素,使烟丝色泽由棕褐转变至棕黄,以符合消费者的习惯,同时在改善燃烧性能等方面,也有所改善。
The pigments in tobacco generally come from naturally occurring pigments such as chlorophyll, carotenoids and lutein. Their content in the tobacco leaves with the maturity stage of tobacco, fertilization conditions, climate, soil and tobacco processing and modulation of technology; various types of tobacco such as flue-cured tobacco, drying tobacco in the baking, drying and other processing in the presence of tobacco (Or sugars added during the resurgence of tobacco leaves) and Melanoidin produced by browning of amino acids, peptides and proteins through Maillard reaction, so as to make the color of tobacco leaf darker. The contents of phenol, Enzymatic oxidative browning of a class of substances like tannin during tobacco leaf processing. This paper reports the oxidation of these pigments with hydrogen peroxide under the alkaline conditions and the presence of KI to change the color of the tobacco from brown to brown in order to meet the consumer’s needs and to improve the burning properties Improved.