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Evitasari, Rachma Tia
Universitas Ahmad Dahlan
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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 Teknik Industri, UPN "Veteran" Yogyakarta

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

Abstract

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
Effects oF Chitosan as Bio-Mordant on Cotton Fabric Dyeing with Various Natural Dyes Evitasari, Rachma Tia; Mufrodi, Zahrul; Mazareta, Selva; Nirmalasari, Jiran
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

Abstract

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).
Pelatihan Membatik Pewarna Alami dan Pengenalan Teknologi Mordanting Kitosan pada Balai Agung Cendana Semaki, Yogyakarta Evitasari, Rachma Tia; Mufrodi, Zahrul; Robi’in, Bambang
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 7 No 1 (2023): Volume 7 Nomor 1 Tahun 2023
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v7i1.16173

Abstract

The strategic plan for the development of the Semaki area is to develop regional-based economic, social and cultural communities with various training programs. One of which is handmade batik craftsmen who is in UKM Balai Agung Cendana Batik Tulis. The problems are high production costs and the length of production time in making batik. The purpose is to increase the knowledge and capacity of partners in producing batik with natural dyes by introducing natural dyeing technology so as to reduce the stages of the process so as to reduce production costs. Methods and approaches in implementing this activity are counseling and training. Community service activities at Balai Agung Cendana Batik Tulis were able to increase participants' knowledge in drawing motifs, wax painting, dyeing processes, and pre-mordanting with chitosan up to 100%. The batik training provided to the community was also able to improve the community's skills in drawing and painting batik up to 92% and the skills of dyeing fabrics with natural dyes and chitosan mordanting up to 98%.
Co-Authors Amelia, Shinta Arfiani Nur Khusna Bambang Robiin Bambang Robi’in Caraka Putra Bhakti Caraka Putra Bhakti Caraka Putra Bhakti Chusna, Firda Mahira Alfiata Damayanti, Putri Alfina Dhias Cahya Hakika Edia Rahayuningsih Endah Sulistiawati Firda Mahira Alfiata Chusna Firda Mahira Alfiata Chusna Firda Mahira Alfiata Chusna Firda Rizki Rhomadoni Gita Indah Budiarti Gita Indah Budiarti Hana Rofiqoh Ilham Habib Haspadilah Jiran Nirmalasari Lestari, Betty Novia Liya Yusrina Sabila Lukhi Mulia Sitophyta Martomo Setyawan Mazareta, Selva Nirmalasari, Jiran Pita Adis Hernanda Putri Alfina Damayanti Robi’in, Bambang Robi’in, Bambang Rofiqoh, Hana Rosyida, Miftahurrahma Sabila, Liya Yusrina Sabilihaq, Roby Sarah Fazlia Selva Mazareta Shandy Auliya Ma'arief Shinta Amelia Siti Nur Aini, Siti Nur Suhendra Suhendra Tresya Pantoiyo Yulianto, Dinan Zahrul Mufrodi Zahrul Mufrodi Zahrul Mufrodi, Zahrul