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Pembuatan Pulp dari Kulit Jagung dan Ampas Tebu dengan Metode Acetosolv Pelarut Asam Cuka Apel dengan Variasi Kulit Jagung dan Ampas Tebu Rachma Tia Evitasari; Ilham Habib Haspadilah; Firda Rizki Rhomadoni
Jurnal Teknologi Kimia Unimal Vol 11, No 2 (2022): Jurnal Teknologi Kimia Unimal - Nopember 2022
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v11i2.8776

Kulit jagung dan ampas tebu menjadi bahan baku alternatif yang dapat dimanfaatkan untuk mengurangi ketergantungan pada kayu sebagai bahan baku pembuatan pulp dan kertas. Penelitian ini menggunakan metode acetosolv yaitu penggunaan asam asetat sebagai pelarut organik untuk mengetahui kekuatan tarik dari lembaran pulp yang dihasilkan. Variabel yang dilakukan pada penelitian ini adalah waktu pemasakan yaitu selama 1 jam dan 2 jam, jumlah perekat tepung tapioka sebanyak 7 gram dan 14 gram, rasio kulit jagung terhadap ampas tebu 1:1, 1:3 3:1 dengan melakukakan uji kuat tarik kertas. , kondisi terbaik didapatkan pada penambahan perekat sebesar 14 gram, proses pemasakan selama 2 jam dan rasio kulit jagung terhadap ampas tebu yaitu 1:3, diperoleh kuat tarik sebesar 1136 N/m2.

Microwave assisted extraction of anthocyanin from purple sweet potato (Ipomoea batatas L.) using deep eutectic solvent (DES) based on citric acid Rachma Tia Evitasari; Hana Rofiqoh; Putri Alfina Damayanti; Firda Mahira Alfiata Chusna
Jurnal Rekayasa Proses Vol 16, No 2 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.72046

Purple sweet potato (Ipomoea batatas L.) is one of the tubers or roots that is widely grown in Indonesia that contain high antioxidants. One type of flavonoid that functions as an antioxidant is a natural dye called anthocyanin. In the process of extraction of anthocyanin, the solvent has an important role. In this research, the deep eutectic solvent was used because it is more economical and environmentally friendly. This research will optimize the microwave assisted extraction of anthocyanin content in purple sweet potato (Ipomoea batatas L.) using a deep eutectic solvent with the variation of material to solvent ratio, microwave power, and extraction time. Optimization is done by using the statistical method Response Surface Method (RSM) with Total Anthocyanin content as a response. The optimum operating conditions for the extraction of anthocyanins from purple sweet potato using the deep eutectic solvent were obtained at a solid to solvent ratio of 1:29 at a microwave power of 270 watts for 193 s, with an optimum TAC value of 311.64 mg/L and an antioxidant value of 44.85%. The use of DES can increase the extraction yield and is environmentally friendly.

Microwave assisted extraction of anthocyanin from purple sweet potato (Ipomoea batatas L.) using deep eutectic solvent (DES) based on citric acid Rachma Tia Evitasari; Hana Rofiqoh; Putri Alfina Damayanti; Firda Mahira Alfiata Chusna
Jurnal Rekayasa Proses Vol 16, No 2 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.72046

Purple sweet potato (Ipomoea batatas L.) is one of the tubers or roots that is widely grown in Indonesia that contain high antioxidants. One type of flavonoid that functions as an antioxidant is a natural dye called anthocyanin. In the process of extraction of anthocyanin, the solvent has an important role. In this research, the deep eutectic solvent was used because it is more economical and environmentally friendly. This research will optimize the microwave assisted extraction of anthocyanin content in purple sweet potato (Ipomoea batatas L.) using a deep eutectic solvent with the variation of material to solvent ratio, microwave power, and extraction time. Optimization is done by using the statistical method Response Surface Method (RSM) with Total Anthocyanin content as a response. The optimum operating conditions for the extraction of anthocyanins from purple sweet potato using the deep eutectic solvent were obtained at a solid to solvent ratio of 1:29 at a microwave power of 270 watts for 193 s, with an optimum TAC value of 311.64 mg/L and an antioxidant value of 44.85%. The use of DES can increase the extraction yield and is environmentally friendly.

Pengelolaan dan Pengolahan Sampah Organik di Dukuh Sanan, Kabupaten Bantul Rachma Tia Evitasari; Dinan Yulianto; Firda Mahira Alfiata Chusna
I-Com: Indonesian Community Journal Vol 3 No 2 (2023): I-Com: Indonesian Community Journal (Juni 2023)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Dukuh Sanan terletak di Provinsi Daerah Istimewa Yogyakarta, Kabupaten Bantul, Kecamatan Pleret, dan Kelurahan Bawuran. Mayoritas pemuda di Dukuh Sanan tergabung ke dalam karang taruna yang berperan aktif memilah sampah botol plastik dan plastik bening untuk dijual dengan nilai ekonomis yang rendah. Hal ini suatu rintisan yang baik tetapi belum mengakomodasi ketegori sampah lain. Program pengabdian ini berupaya meningkatkan ilmu pengetahuan pemuda karang taruna Dukuh Sanan selaku mitra dalam mengelola dan mengolah sampah organik menjadi pupuk kompos. Metode pelaksanaan pengabdian masyarakat ini terdiri dari tahap pra-pelaksanaan, pelaksanaan, dan pasca-pelaksanaan. Tahap pra-pelaksanaan berupa persiapan dan sosialisasi kegiatan. Tahap pelaksanaan meliputi penyuluhan pemisahan jenis sampah organik dan anorganik, pelatihan pengelolaan sampah dengan prinsip 3R (reduce, reuse, dan recycle), dan pelatihan pembuatan pupuk kompos dari sampah organik. Para peserta mengikuti kegiatan dengan sangat antusias dan berhasil membuat produk berupa pupuk kompos. Tahap pasca-pelaksanaan dilakukan evaluasi peningkatan pengetahuan mengenai pembuatan pupuk kompos sebesar 93%.

Effects oF Chitosan as Bio-Mordant on Cotton Fabric Dyeing with Various Natural Dyes Rachma Tia Evitasari; Zahrul Mufrodi; Selva Mazareta; Jiran Nirmalasari
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol 40, No 1 (2023): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v40i1.7991

Natural dyes are alternatives to synthetic dyes as batik dyes. However, color results produced by natural dyes were not as good as synthetic dyes, hence mordant compounds were required. As a substitute for metal mordant, it was essential to have another alternative mordant, such as chitosan. This research was intended to analyze the color produced by various sources of natural dyes, betel nut; spurred mangrove (tingi) bark; baheda (jolawe) peel; mangrove bark; mahogany bark; and copperpod (jambal) bark, quantitatively by testing the value of color differences (ΔE) on variations of the chitosan concentration and fabric dyeing. In conclusion, the use of chitosan could enhance the absorption of dye into the fabric. In a chitosan concentration of 10 g/L, betel nut reached an ΔE value of 15.40; spurred mangrove 16.26; baheda peel 18.97; mangrove 10.87; mahogany 14.01; and copperpod 19.33. Furthermore, the test of fastness to sunlight with greyscale showed the value in range of 4-5 (good).

Application of the Internet of Things in Waste Processing Equipment for Batik Craftsmen in Iroyudan Village, Guwosari Village, Pajangan District, Bantul Regency Liya Yusrina Sabila; Shinta Amelia; Rachma Tia Evitasari; Shandy Auliya Ma'arief; Pita Adis Hernanda
Indonesia Berdaya Vol 5, No 1 (2024)
Publisher : UKInstitute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.2024644

Yogyakarta is one of the largest batik-producing cities in Indonesia. It has a positive impact on the artisans's economy. It adds new jobs, but this has yet to be matched by the skills and knowledge of the artisans in managing liquid waste generated from batik activities. So far, liquid batik waste has been stored in holding tanks and allowed to seep into the ground or even directly thrown into the water without further processing. So, it harms the environment, such as pollution of the waters and the surrounding environment and even the death of aquatic biota. Therefore, a renewable technological innovation was created, combined with the Heterogeneous Fenton method as a medium for processing batik waste. The methods used include pre-test, lecture, question and answer and post-test. Based on service activities that have been carried out, including providing information on equipment technology of batik waste processing to batik artisans in Desai Iroyudan, Guwosari Village, Pajangan District, Bantul Regency, Yogyakarta, it is known that the level of community understanding has become 98% or increased by 23%.

Pembuatan Serbuk Fikobiliprotein dari Spirulina platensis melalui Proses Freezing-Thawing dan Freeze-Drying Mazareta, Selva; Sulistiawati, Endah; Evitasari, Rachma Tia; Setyawan, Martomo; Hakika, Dhias Cahya
Eksergi Vol 21, No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12453

Mikroalga golongan Cyanophyta seperti Spirulina Platensis (SP) merupakan salah satu sumber makanan fungsional yang bergizi. SP mengandung senyawa fikobiliprotein (PBP) yang merupakan komponen terbesar dari protein dan berfungsi sebagai antioksidan dan antikanker. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan solven-biomassa (S/B), waktu pengeringan beku, dan luas permukaan wadah sampel pada pengeringan beku terhadap serbuk PBP yang dihasilkan. Eksperimen diawali dengan proses perendaman SP kering (1,5 dan 3 g) selama 1 jam, pembekuan selama 24 jam, thawing, penyaringan vakum (30-90 menit) dan pengeringan beku (freeze-drying) pada filtrat yang diperoleh. Analisis konsentrasi PBP dalam filtrat dilakukan dengan mengukur absorbansinya menggunakan UV-Vis Spektrofotometer diuji pada panjang gelombang 562, 615, dan 652 nm. Kadar air pada serbuk PBP setelah dilakukan proses freeze-drying diukur secara gravimeteri. Variasi yang dilakukan meliputi perbandingan S/B (6,67-133,33) mL air suling/g SP kering. Variasi waktu freeze drying selama 24 dan 32 jam. Waktu optimum untuk penyaringan vakum 30,55 menit dan menghasilkan konsentrasi PBP tertinggi (7,639 g/L). Nilai S/B optimum didapatkan sebesar 20 mL/g dengan rendemen 112,32 mg/g (SP kering). Luas permukaan wadah sampel pada pengeringan beku yang terbaik adalah 427,5 cm2 dan banyaknya air yang teruapkan sebesar 99,71% dari berat filtrat

Training on the Use of Batik Waste Processing Equipment to Enhance Productivity for the Wijirejo Pandak Bantul Batik Group Amelia, Shinta; Evitasari, Rachma Tia; Rosyida, Miftahurrahma; Sabila, Liya Yusrina; Sabilihaq, Roby; Lestari, Betty Novia; Aini, Siti Nur
Indonesia Berdaya Vol 5, No 4 (2024)
Publisher : UKInstitute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.2024906

The batik industry is one that continues to develop over time. One of the ongoing concerns is the waste generated by the batik industry, particularly the dye content in batik dyes. Reactive dyes, if not processed properly, can have a very negative impact on the environment. They can pollute water sources, harm the surrounding environment, and even kill aquatic biota. Currently, liquid batik waste is stored in holding tanks and allowed to seep into the ground without further processing. Given the environmental impact of batik dyes, efforts must be made to minimize these effects before the waste is discharged into water bodies. A batik waste processing method currently under development is the Heterogeneous Fenton method. This method can degrade batik waste into compounds that are less harmful to the environment. The implementation of this service involves socialization and introduction of the program to the service partners, as well as training. This includes technology introduction, tool usage, and the transfer of scientific and technological knowledge to the service partners.

Microwave assisted extraction of anthocyanin from purple sweet potato (Ipomoea batatas L.) using deep eutectic solvent (DES) based on citric acid Evitasari, Rachma Tia; Rofiqoh, Hana; Damayanti, Putri Alfina; Chusna, Firda Mahira Alfiata
Jurnal Rekayasa Proses Vol 16 No 2 (2022): Volume 16, Number 2, 2022
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.72046

Purple sweet potato (Ipomoea batatas L.) is one of the tubers or roots that is widely grown in Indonesia that contain high antioxidants. One type of flavonoid that functions as an antioxidant is a natural dye called anthocyanin. In the process of extraction of anthocyanin, the solvent has an important role. In this research, the deep eutectic solvent was used because it is more economical and environmentally friendly. This research will optimize the microwave assisted extraction of anthocyanin content in purple sweet potato (Ipomoea batatas L.) using a deep eutectic solvent with the variation of material to solvent ratio, microwave power, and extraction time. Optimization is done by using the statistical method Response Surface Method (RSM) with Total Anthocyanin content as a response. The optimum operating conditions for the extraction of anthocyanins from purple sweet potato using the deep eutectic solvent were obtained at a solid to solvent ratio of 1:29 at a microwave power of 270 watts for 193 s, with an optimum TAC value of 311.64 mg/L and an antioxidant value of 44.85%. The use of DES can increase the extraction yield and is environmentally friendly.

Peningkatan Kompetensi Guru di SMA Negeri 2 Playen, Gunungkidul, Daerah Istimewa Yogyakarta melalui Pelatihan Membuat Komik Digital sebagai Media Pembelajaran Berbasis Kecerdasan Artifisial Yulianto, Dinan; Khusna, Arfiani Nur; Evitasari, Rachma Tia
Jurnal Pengabdian Masyarakat Terapan Vol 2 No 2 (2025): JUPITER Agustus 2025
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jupiter.2.2.59

Sekolah Menengah Atas Negeri 2 Playen memiliki program reguler untuk meningkatkan kompetensi pihak kepala sekolah dan guru yang memuat nilai-nilai lifelong learning. Hasil diskusi kepada pihak guru mengidentifikasi media pembelajaran yang telah diterapkan oleh guru meliputi buku paket, modul pembelajaran, lembar kerja siswa, poster, media power-point, dan media audio-visual. Namun, guru memiliki kesadaran terkait kendala dalam pengembangan media pembelajaran digital yang lebih inovatif. Faktor keterbatasan pengalaman guru dalam menggunakan teknologi dapat memperlambat pengembangan media pembelajaran digital yang kreatif dan inovatif. Faktor keterbatasan waktu dan beban kerja yang tinggi juga menyebabkan guru kesulitan dalam pengembangan media pembelajaran digital secara komprehensif. Upaya mengatasi masalah pengembangan media pembelajaran digital yang kreatif dan inovatif secara komprehensif dilakukan pelatihan berbasis kecerdasan artifisial. Program pelatihan dilakukan secara terstruktur melalui metode pre-test, presentasi, praktik, diskusi, serta post-test. Program edukasi kepada guru meliputi materi terminologi dan peran media pembelajaran, klasifikasi media pembelajaran kovensional dan digital, metode produksi media pembelajaran digital Multimedia Development Life Cycle, serta sistem lisensi digital dari aset digital. Program pelatihan teknis kepada guru meliputi praktik akses sumber daya aset digital serta praktik membuat komik digital secara semi-autonomus dan autonomus. Hasil pre-test dan post-test kepada 40 guru mengidentifikasi peningkatan rerata nilai guru dari 62% menjadi 87% sebagai representasi nilai ketercapaian pemahaman dan penguasaan materi pelatihan yang meningkat secara signifikan. Implikasi positif dari program pelatihan ini meliputi peningkatan nilai pemahaman dan keterampilan teknis guru dalam menciptakan media pembelajaran berupa komik digital berbasis teknologi kecerdasan artifisial.

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