Kata Kunci: coldprocess, hotprocess, sabun suvenir ABSTRAK Kegiatan Pengabdian kepada Masyarakat Program Penerapan IPTEKS (Ilmu Pengetahuan, Teknologi, dan Sains) telah dilaksanakan di Unit Kewirausahaan dan Prakarya, Madrasah Aliyah Negeri (MAN) Purbalingga. Tujuan kegiatan ini adalah (1) transfer teknologi pembuatan soap-base berbasis minyak untuk membuat sabun dasar alami (natural soap-base); (2) transfer teknologi metode cold-process dan hot-process untuk kreasi sabun suvenir varian bentuk dan warna; serta (3) transfer pengetahuan tentang ragam kemasan produk sabun suvenir. Metode yang diterapkan meliputi pendidikan siswa, pelatihan, serta difusi iptek untuk memproduksi sabun suvenir. Hasil post-test menunjukkan bahwa terjadi peningkatan pengetahuan mitra tentang reaksi penyabunan (0% menjadi 50%), prinsip pembuatan sabun (0% menjadi 54,2%), serta pengetahuan tentang bahan baku, bahan tambahan, dan peralatan untuk membuat sabun. Tiga faktor utama yang dapat mendorong anggota mitra agar mau membuat sabun adalah rasa ingin tahu tentang proses pembuatan sabun secara lebih dalam (70,8%); peluang usaha (62,5%), dan keinginan untuk membuat sabun sesuai dengan yang diinginkan/kreasi sabun (29,1%). Kegiatan pengabdian kepada masyarakat ini diharapkan dapat bermanfaat bagi mitra, yakni memberi keterampilan untuk memproduksi sabun suvenir berbahan baku alami dengan beragam bentuk dan warna. ABSTRACT IPTEKS-based community service has been done with the Entrepreneurship and Workshop unit of MAN Purbalingga. The objectives of the activities were (1) Transferring of soap making technology to produce natural soap-base; (2) Transferring of cold-process and hot-process methods for the creation of soap-souvenirs with various shapes and colors; and (3)Transferring the packaging knowledge for souvenir soap products. The methods applied include student education, training, and the diffusion of science and technology to produce souvenir soap. The post-test results showed that there was an increased knowledge of the partners on saponification reactions (0% to 50%), soap making principles (0% to 54.2%), as well as the understanding of raw materials, additives, and soap-making equipment. The three main factors that could encourage the partners to make soap were an eagerness on how to make soap (70.8%); business opportunity (62.5%), and wanted to make soap creations (29.1%). This community service activity was expected to provide benefits in the form of partnership ability to produce souvenir soap made from natural ingredients with various shapes and colors.
ABSTRAKAnalisis hubungan kuantitatif struktur dan nilai Konsentrasi Misel Kritik (KMK) surfaktan anionik telah dilakukan. Penelitian ini dilakukan dengan tujuan menyusun persamaan matematika untuk menghitung konsentrasi misel kritik teoritis surfaktan anionik. Dalam penelitian dilakukan penggambaran setiap struktur molekul surfaktan anionik ke model senyawa tiga dimensi, dilanjutkan dengan mengoptimasi setiap model struktur surfaktan anionik dengan metode perhitungan Austin Model 1(AM1), serta perhitungan deskriptor untuk dianalisis statistik dengan Multiple linear Regression (MLR). Hasil perhitungan statistik menunjukkan bahwa untuk menghitung nilai konsentrasi misel kritik teoritis surfaktan anionik dapat menggunakan persamaan sebagai berikut: log KMK = 4,157+0,118qC1+7,698qC2+0,425α-0,010µ-0,129RD-0,138 log P+0,021BM-0,034Avdw, dengan n = 100 ; r = 0,927 ; r 2 = 0,860 ; SE = 0,352 ; F = 30,888 ; PRESS = 23,506. Kata kunci : KMK, semiempiris AM1, surfaktan anionik ABSTRACTThis research determines the mathematical equation which calculate the Concentration Micelle Critic theoretical anionic surfactant. The research was conducted the depiction of each surfactant anionic threedimensional compound models, followed by optimizing the model structure anionic surfactant by using AM1 calculation method. Furthermore the calculation of descriptors (QSPR method), then it was analyzed statistically using Multiple Linear Regression (MLR). The results of statistical calculations showed that to calculate the theoretical CMC anionic surfactant can use the QSPR equation: log CMC = 4.157+0.118qC1+7.698qC2+0.425α-0.010µ-0.129RD-0.138 log P+0.021BM-0.034Avdw, n = 100 ; r = 0.927 ; r 2 = 0.860 ; SE = 0.352 ; F= 30.888 ; PRESS = 23.506
Development of anionic surfactant compound isvery important because the anionic surfactant class iswidely used in people's lives. For instance,anionic surfactantsare used as food additives and detergents. The novelcompound of sulfonate-basedsurfactantor proposed compound has predictedthe CriticalMicelle Concentration(CMC) value of experiment. Quantitative Structure-Property Relationship (QSPR)analysisbased on semiempiricalZINDO/1 calculationwas conducted to obtain QSPR equation. Theoretical predictorsor independent variable which have an influence on the value of CMC are used to construct QSPR equation. The theoretical predictors areclassified intopredictor of electronic properties, solubility and steric. A total of 108experimentalCMCbelongs to sulfonate-basedsurfactant are calculated their theoretical predictors and analyzed by multiple linear regression. The QSPR equationwhich is obtainedfromthis study contains theimportant theoretical predictors.They are solubility properties, molecular weight, molecular size and net charge of carbon atomin thepolar partof sulfonate-based surfactant. This QSPR equation couldbe used to predict the CMC value of the novelsulfonate-based surfactant.
Sirih duduk or Piper sarmentosum Roxb. ex Hunter have been long used the people in Indonesia for traditional medicine to cure various diseases. This research was aimed to isolate and identify antioxidant compounds from P. sarmentosum leaves. The isolation bioactive compounds of P. sarmentosum leaves was performed by extraction the powder of P. sarmentosum leaves using methanol. The methanol extract was fractionated using n-hexane and ethylacetate in their various composition. The fractions respectively was examined their antioxidant activity. The most active extract was fractionated again performed by coloumn chromatography Identification of the bioactive compounds was carried out using ultraviolet-visible (UV-Vis) spectrometry, infra red (IR) spectrometry and gas chromatography-mass spectrometry (GCMS). The result showed that the methanol extract of P. sarmentosum leaves have antioxidant activity. The fractionation was performed by coloumn chromatography using n-hexane-ethylacetate (4:6) eluent, a bioactive compound of sinamic acid derivative was 4-ethoxy-2-hidroxy-3,5-dimethoxy sinamic acid could be purely isolated.
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