Lavandula angustifolia Mill. é uma importante planta produtora de óleos essenciais, que apresenta dificuldade de propagação pelo enraizamento de estacas, sendo a produção de mudas realizada nesse trabalho pela técnica de micropropagação, em que foram avaliadas algumas condições do cultivo in vitro. As mudas produzidas pela micropropagação foram cultivadas em São Joaquim (SC). O óleo essencial das inflorescências foi extraído por hidrodestilação, e analisado quanto a sua composição por GC/MS, em dois anos de colheita. O meio de cultura LS apresentou melhor resposta no desenvolvimento das brotações, não sendo observadas brotações com necrose apical. Meios de cultura mais diluídos como o ½ MS e o WPM, apresentaram altas taxas de hiperidricidade e necrose apical das brotações. A citocinina BAP influenciou a multiplicação das brotações, sendo a qualidade mantida com 1,0µM ao longo de quatro subcultivos. A sobrevivência das plantas na aclimatização foi de 80%. Os teores de óleo essencial foram de 4,0% e 5,25%, na primeira e segunda colheita, respectivamente. Os compostos majoritários foram o linalol (46,88% e 37,25%) e acetato de linalila (10,09% e 12,24%).

Lavandula angustifolia Mill. is an important producer of essential oil, which presents the difficulty of propagation stem cuttings. In this work the propagation of plant was carried out by micropropagation technique, in which certain conditions were evaluated in vitro. The micropropagated plants were grown in São Joaquim (SC). The essential oil of the inflorescences was extracted by hydrodistillation and analyzed for their composition by GC/MS in two years of harvest. The culture medium LS showed a better response in the development of shoots. Culture media more diluted as the 1/2 MS and WPM showed high rates of hyperhrydricity and apical necrosis. The BAP influenced the shoot multiplication and the quality being maintained with 1.0 mM over four subcultures. The survival in the acclimatization of plants was 80%. The content of essential oil were 4.0% and 5,25% in the first and second harvest, respectively. The major compounds were linalool (46.88% and 37.25%) and linalyl acetate (10.09% and 12.24%).

Catalyst based on Kegging-type heteropolyacids (H3PW12O40 - HPA), supported on SiO2 (H3PW), were prepared by the impregnation method under different thermal treatment conditions. The materials were characterized by different instrumental techniques and used as catalysts in the methyl esterification reactions of stearic acid. Using the catalyst with 15% of HPA, conversions higher than 60% were obtained after 2 h of reaction at 65 ºC. Recovery studies using hot-filtration with ethanol at 75 ºC showed satisfactory activity for two additional reaction cycles.