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All Journal Jurnal Inovasi Teknik Kimia Chimica Didactica Acta, Journal of Chemistry and Chemistry Education
Adelia Natasya Regita Nugroho
Universitas Singaperbangsa Karawang
Chemical Engineering, Chemistry & Bioengineering

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PRODUKSI MINYAK ATSIRI MELALUI RAGAM METODE EKSTRAKSI DENGAN BERBAHAN BAKU JAHE Firgi Siswantito; Adelia Natasya Regita Nugroho; Riska Listiarini Iskandar; Christin Octaviani Sitanggang; Zulaikha Al-Qordhiyah; Cicih Rosidah; Siti Nurhayati; Dessy Agustina Sari
Jurnal Inovasi Teknik Kimia Vol 8, No 3 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i3.8072

Abstract

Minyak atsiri adalah ekstrak cairan yang didapatkan dari tanaman aromatik. Berbagai industri saat ini membutuhkan minyak atsiri untuk ragam produk kebutuhan manusia yang ditujukan bagi farmasi, parfum, kosmetik, minuman serta makanan. Sejumlah peneliti melanjutkan pencarian kebaharuan dalam memodifikasi metode ekstraksi sebelumnya yang tentunya menghemat waktu dan biaya proses. Selain itu, tuntutan lainnya terhadap temuan produk minyak atsiri meminta adanya implementasi aspek ramah lingkungan. Penggunaan bahan baku yang telah diketahui sebagai produk minyak atsiri adalah jahe, serai wangi, tanaman bawang, daun salam, dan tanaman aromatik lainnya. Beberapa metode ekstraksi (seperti: hidrodistilasi, ekstraksi solvent-free microwave, distilasi uap, gelombang mikro hidrodifusi dan gravitasi, serta hidrodistilasi dengan bantuan enzim) digunakan untuk mengoptimalkan yield minyak atsiri. Pihak industri dan farmasi menjadi jembatan bagi masyarakat untuk merasakan manfaat produk minyak atsiri. Kajian ini memberikan beberapa gambaran dari temuan penelitian mengenai pemanfaatan jahe melalui metode ekstraksi minyak atsiri dan penerapannya dalam industri komestik serta farmasi.
COBALT - MODIFIED NATURAL ZEOLITE AS A HETEROGENEOUS CATALYST FOR ETHYL ACETATE SYNTHESIS Retno Utami; Alfieta Rohmaful Aeni; Teguh Pambudi; Adelia Natasya Regita Nugroho
Chimica Didactica Acta Vol. 13 No. 2: December 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v13i2.44

Abstract

The esterification of acetic acid with ethanol to produce ethyl acetate is an important reaction widely applied in the chemical, pharmaceutical, and food industries. However, this process often results in low conversion when performed without an efficient catalyst, as the reaction is reversible and limited by equilibrium. Therefore, developing a stable and active heterogeneous catalyst is essential to enhance the reaction rate and product yield. This study aims to improve the catalytic performance of natural zeolite through modification with cobalt chloride (CoCl₂) using the wet impregnation method to introduce additional active sites and strengthen surface acidity. The modified cobalt-zeolite catalyst was evaluated in the esterification of acetic acid and ethanol at a temperature of 70 °C under various catalyst loadings ranging from 0,25 to 2 grams and reaction times from 15 to 120 minutes. The catalytic performance was analyzed based on acetic acid conversion obtained from titration analysis. The results showed that cobalt impregnation significantly increased catalytic activity compared to both pure and acid-activated zeolites. The optimum condition was achieved using 1 gram of catalyst with a reaction time of 30 minutes, yielding a maximum acetic acid conversion of 92.24 percent. The enhancement in activity is attributed to the formation of new Lewis acid sites and the increased surface acidity caused by cobalt incorporation into the zeolite framework, which facilitates stronger interactions between the catalyst and reactant molecules. The cobalt-modified zeolite exhibited higher structural stability and superior catalytic efficiency, demonstrating that cobalt acts not only as an active site but also as a structural and acidity modifier. In conclusion, cobalt-modified natural zeolite shows great potential as an effective heterogeneous catalyst for ethyl acetate synthesis. Future work is recommended to investigate the reusability, regeneration capability, and long-term stability of the catalyst for continuous and industrial-scale esterification applications.
Co-Authors Alfieta Rohmaful Aeni Christin Octaviani Sitanggang Cicih Rosidah Dessy Agustina Sari Firgi Siswantito Retno Utami Riska Listiarini Iskandar Siti Nurhayati Teguh Pambudi Zulaikha Al-Qordhiyah