Wiyono Bambang, Tachibana Sanro, Tinambunan Djaban
Forest Products Research and Development Center-FORDA, Jl. Gunung Batu 5, Bogor, Indonesia
Pak J Biol Sci. 2007 Sep 15;10(18):3057-64. doi: 10.3923/pjbs.2007.3057.3064.
This study was directed to look at the chemical composition of maleo-pimaric and fumaro-pimaric rosins made of unmodified rosin with maleic anhydride (MA) or fumaric acid (FA). The results showed that one peak of a maleopimaric acid (MPA) adduct on the chromatogram was obtained when a sample of this reaction product was injected into a Gas liquid chromatography (GLC) or Gas chromatograph-Mass spectrometer (GC-MS) system. Identification of this adduct using a GC-MS showed that a reaction product of rosin and MA produced endo-maleopimaric acid methyl ester. This peak of the adduct had a similar profile as in a previous study with a base peak at m/z =146 and prominent ions at m/z = 386, m/z = 187 and at m/z = 121. In the making of MPA and fumaropimaric acid (FPA) adducts, the increase in molar ratio for both reaction temperatures of 125 and 2000C and all rosin samples used in the reaction process gave a higher yield of endo maleopimaric acid. The largest amount of this product was obtained at a molar ratio of 1:10 with the reaction at 200 degrees C. Among the origin of the rosin used in this experiment, rosin from Central Java produced the highest MPA, while the highest FPA was achieved by using rosin from North Sumatra. The relationship between the molar ratio and the concentration of MPA or FPA could be expressed as a quadratic equation. From the equation, one could predict the best molar ratio to produce the highest MPA or FPA adducts at a suitable molar ratio. Using the equation Y = -0.8475 X2 + 10.448X - 9.7125, at the reaction temperature 200 degrees C, the highest MPA (around 22.50%) could be achieved by using a molar ratio of rosin and MA of 1:6.2.
本研究旨在考察由未改性松香与马来酸酐（MA）或富马酸（FA）制成的马来海松酸型和富马海松酸型松香的化学成分。结果表明，将该反应产物的样品注入气液色谱（GLC）或气相色谱 - 质谱联用仪（GC - MS）系统时，在色谱图上获得了一个马来海松酸（MPA）加合物的峰。使用GC - MS对该加合物进行鉴定表明，松香与MA的反应产物生成了内型马来海松酸甲酯。该加合物的峰与先前研究中的峰形相似，基峰为m/z = 146，突出离子为m/z = 386、m/z = 187和m/z = 121。在制备MPA和富马海松酸（FPA）加合物时，对于125℃和200℃这两个反应温度以及反应过程中使用的所有松香样品，摩尔比的增加均使内型马来海松酸的产率更高。在200℃反应且摩尔比为1:10时获得该产物的量最大。在本实验使用的松香来源中，中爪哇的松香产生的MPA最高，而使用北苏门答腊的松香获得的FPA最高。摩尔比与MPA或FPA浓度之间的关系可用二次方程表示。根据该方程，可以预测在合适的摩尔比下产生最高MPA或FPA加合物的最佳摩尔比。使用方程Y = -0.8475X² + 10.448X - 9.7125，在200℃反应温度下，松香与MA的摩尔比为1:6.2时可获得最高的MPA（约22.50%）。
