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Effect of Physicochemical Process Variables on Natural Indigo Dye Production from Strobilanthes cusia Leaves by Response Surface Methodology Edia Rahayuningsih; Wachid Siti Fatimah; Mukmin Sapto Pamungkas; Taranipa Marfitania
Indonesian Journal of Chemistry Vol 22, No 2 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.68335

The recovery process of indigoid compounds involves enzymatic hydrolysis of indigo precursors continued by oxidation reaction to synthesize indigo pigment. The purpose of this research was to evaluate the effect of physicochemical process variables, i.e., temperature, time, and pH aeration, on indigo yield from Strobilanthes cusia leaves. Small leaf pieces were immersed in distilled water and heated at temperatures (40, 50, and 60 °C) and duration (1, 2, and 3 h). The extract was aerated at different pHs (8, 10, and 12) to form the indigo product. The indigo concentration was quantified through a visible spectrophotometer and high-performance liquid chromatography (HPLC). The optimized condition for indigo production was studied using response surface methodology (RSM). Temperature, time, and interaction between temperature and time significantly affected the indigo yield. The optimized conditions for extraction of indigo dyes were determined to be at 60 °C for 1 h and pH 8 for maximizing the indigo yield. On that condition, the indigo concentration quantified by HPLC was 1.15% (w/v) which was lower than that by the spectrophotometry. By spectrophotometric analysis, the actual indigo content of 1.68% (w/v) on that optimum condition was close to the predicted indigo content of 1.77% (w/v) using RSM.

Optimization of cotton fabrics dyeing process using various natural dye extracts Edia Rahayuningsih; Taranipa Marfitania; Mukmin Sapto Pamungkas; Mukmin Sapto Pamungkas; Wachid Siti Fatimah
Jurnal Rekayasa Proses Vol 16, No 1 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.70397

A B S T R A C TEfforts to substitute synthetic dyes on fabrics for natural dyes are currently increasing. Research and innovation are extremely needed to support those attempts so that the quality of natural dyes is more competitive than synthetic dyes. This study aims to optimize the dyeing parameters of cotton fabrics using natural dye extracts derived from the barks of Tegeran (Cudrania javanensis), Merbau (Intsia bijuga), Tingi (Ceriops tagal), and Jambal (Peltophorum pterocarpum), as well as Jolawe (Terminalia bellirica) fruit peel. Varied dyeing parameters included dye concentration, dyeing time and temperature, and material to liquor ratio (MLR). The fixative solutions used were alum, lime, and iron (II) sulfate. The optimized parameters were based on the values of color depth and evenness, measured colorimetrically. Furthermore, the obtained results of the dyeing process under optimized conditions were analyzed for color quality by measuring color coordinates as well as the values of color strength (K/S), washing fastness, and light fastness. The results showed that the optimal dyeing conditions for all natural dye extracts used were the code A extract concentrations (0.0113 g/mL of Tegeran; 0.0115 g/mL of Merbau; 0.0204 g/mL of Jambal; and 0.0582 g/mL of Jolawe), dyeing at 28°C, dyeing time of 30 minutes, and the MLR of 1:30. The resulting color variations were brown, gray, and golden yellow for the Tegeran extract with alum fixative. The highest K/S value was 5.56 for the fabric dyed in Tegeran extract with iron (II) sulfate fixative solution. The washing fastness values for Merbau, Tingi, Jambal, and Jolawe were 3-4 (fairly good) to 4-5 (excellent). Meanwhile, the light fastness values for all dyes were between 4 (good) and 5 (excellent). Overall, the standard procedure for cotton fabric dyeing that meets the minimum standards for textile products is obtained.Keywords: cotton fabric; color quality; natural dyes; optimization; standard procedure for dyeingA B S T R A KUsaha substitusi penggunaan pewarna sintetis pada kain dengan pewarna alami semakin meningkat belakangan ini. Hal ini perlu didukung dengan penelitian dan inovasi agar kualitas pewarna alami lebih kompetitif terhadap pewarna sintetis. Penelitian ini bertujuan untuk mengoptimalkan parameter pewarnaan kain katun dengan ekstrak pewarna alami dari kulit kayu Tegeran (Cudrania javanensis), Merbau (Intsia bijuga), Tingi (Ceriops tagal), Jambal (Peltophorum pterocarpum), dan kulit buah Jolawe (Terminalia bellirica). Parameter pewarnaan yang divariasikan antara lain konsentrasi pewarna, waktu dan suhu pewarnaan, serta rasio kain dengan volume larutan fiksator. Larutan fiksator yang digunakan adalah tawas, kapur, dan tunjung. Paramater terikat yang dioptimasikan didasarkan pada nilai ketuaan dan kerataan warna yang diukur secara kolorimetri. Selanjutnya hasil pewarnaan dengan kondisi yang teroptimasi dianalisis kualitas warna melalui pengukuran koordinat warna, nilai kekuatan warna(K/S), dan nilai tahan luntur terhadap pencucian dan cahaya. Hasil menunjukkan bahwa parameter pewarnaan yang optimal untuk semua ekstrak pewarna alami yang digunakan adalah pada konsentrasi ekstrak dengan kode A (0,0113 g/mL Tegeran; 0,0115 g/mL Merbau; 0,0204 g/mL Jambal; dan 0,0582 g/mL Jolawe), pewarnaan pada suhu kamar, waktu pewarnaan 30 menit, dan rasio kain dengan volume larutan fiksator 1:30. Variasi warna yang dihasilkan adalah warna cokelat, abu-abu, dan kuning emas untuk ekstrak tegeran dengan fiksator tawas. Nilai K/S tertinggi sebesar 5,56 untuk kain yang diwarnai dengan ekstrak Tegeran dengan larutan fiksator tunjung. Nilai uji kelunturan terhadap pencucian untuk Merbau, Tingi, Jambal, dan Jolawe adalah 3-4 (cukup baik) sampai dengan 4-5 (sangat baik). Nilai kelunturan terhadap cahaya untuk semua jenis pewarna adalah antara 4 (baik) sampai dengan 5 (sangat baik). Secara keseluruhan, didapatkan prosedur standar pewarnaan kain katun yang memenuhi standar minimum produk tekstil.Kata kunci: kain katun; kualitas warna; optimasi; pewarna alami; standar pewarnaan

Optimization of cotton fabrics dyeing process using various natural dye extracts Edia Rahayuningsih; Taranipa Marfitania; Mukmin Sapto Pamungkas; Mukmin Sapto Pamungkas; Wachid Siti Fatimah
Jurnal Rekayasa Proses Vol 16, No 1 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.70397

A B S T R A C TEfforts to substitute synthetic dyes on fabrics for natural dyes are currently increasing. Research and innovation are extremely needed to support those attempts so that the quality of natural dyes is more competitive than synthetic dyes. This study aims to optimize the dyeing parameters of cotton fabrics using natural dye extracts derived from the barks of Tegeran (Cudrania javanensis), Merbau (Intsia bijuga), Tingi (Ceriops tagal), and Jambal (Peltophorum pterocarpum), as well as Jolawe (Terminalia bellirica) fruit peel. Varied dyeing parameters included dye concentration, dyeing time and temperature, and material to liquor ratio (MLR). The fixative solutions used were alum, lime, and iron (II) sulfate. The optimized parameters were based on the values of color depth and evenness, measured colorimetrically. Furthermore, the obtained results of the dyeing process under optimized conditions were analyzed for color quality by measuring color coordinates as well as the values of color strength (K/S), washing fastness, and light fastness. The results showed that the optimal dyeing conditions for all natural dye extracts used were the code A extract concentrations (0.0113 g/mL of Tegeran; 0.0115 g/mL of Merbau; 0.0204 g/mL of Jambal; and 0.0582 g/mL of Jolawe), dyeing at 28°C, dyeing time of 30 minutes, and the MLR of 1:30. The resulting color variations were brown, gray, and golden yellow for the Tegeran extract with alum fixative. The highest K/S value was 5.56 for the fabric dyed in Tegeran extract with iron (II) sulfate fixative solution. The washing fastness values for Merbau, Tingi, Jambal, and Jolawe were 3-4 (fairly good) to 4-5 (excellent). Meanwhile, the light fastness values for all dyes were between 4 (good) and 5 (excellent). Overall, the standard procedure for cotton fabric dyeing that meets the minimum standards for textile products is obtained.Keywords: cotton fabric; color quality; natural dyes; optimization; standard procedure for dyeingA B S T R A KUsaha substitusi penggunaan pewarna sintetis pada kain dengan pewarna alami semakin meningkat belakangan ini. Hal ini perlu didukung dengan penelitian dan inovasi agar kualitas pewarna alami lebih kompetitif terhadap pewarna sintetis. Penelitian ini bertujuan untuk mengoptimalkan parameter pewarnaan kain katun dengan ekstrak pewarna alami dari kulit kayu Tegeran (Cudrania javanensis), Merbau (Intsia bijuga), Tingi (Ceriops tagal), Jambal (Peltophorum pterocarpum), dan kulit buah Jolawe (Terminalia bellirica). Parameter pewarnaan yang divariasikan antara lain konsentrasi pewarna, waktu dan suhu pewarnaan, serta rasio kain dengan volume larutan fiksator. Larutan fiksator yang digunakan adalah tawas, kapur, dan tunjung. Paramater terikat yang dioptimasikan didasarkan pada nilai ketuaan dan kerataan warna yang diukur secara kolorimetri. Selanjutnya hasil pewarnaan dengan kondisi yang teroptimasi dianalisis kualitas warna melalui pengukuran koordinat warna, nilai kekuatan warna(K/S), dan nilai tahan luntur terhadap pencucian dan cahaya. Hasil menunjukkan bahwa parameter pewarnaan yang optimal untuk semua ekstrak pewarna alami yang digunakan adalah pada konsentrasi ekstrak dengan kode A (0,0113 g/mL Tegeran; 0,0115 g/mL Merbau; 0,0204 g/mL Jambal; dan 0,0582 g/mL Jolawe), pewarnaan pada suhu kamar, waktu pewarnaan 30 menit, dan rasio kain dengan volume larutan fiksator 1:30. Variasi warna yang dihasilkan adalah warna cokelat, abu-abu, dan kuning emas untuk ekstrak tegeran dengan fiksator tawas. Nilai K/S tertinggi sebesar 5,56 untuk kain yang diwarnai dengan ekstrak Tegeran dengan larutan fiksator tunjung. Nilai uji kelunturan terhadap pencucian untuk Merbau, Tingi, Jambal, dan Jolawe adalah 3-4 (cukup baik) sampai dengan 4-5 (sangat baik). Nilai kelunturan terhadap cahaya untuk semua jenis pewarna adalah antara 4 (baik) sampai dengan 5 (sangat baik). Secara keseluruhan, didapatkan prosedur standar pewarnaan kain katun yang memenuhi standar minimum produk tekstil.Kata kunci: kain katun; kualitas warna; optimasi; pewarna alami; standar pewarnaan

Increasing Productivity in Planting Indigofera Tinctoria Plant Seeds as Producers of Natural Dyes in Pacarejo Village, Semanu, Gunung Kidul, D.I. Yogyakarta Supriadianto, Supriadianto; Rahayuningsih, Edia; Dewi, Kumala; Pamungkas, Mukmin Sapto
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 9, No 4 (2023): Desember
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.80805

This investigation was conducted in Pacarejo Village with the participation of thirty people. This activity was a follow-up to the second year of research, with the objectives of: 1) Increasing participation and strengthening the commitment of Gapoktan of Sembada, Pacarejo Village by planting Indigofera tinctoria as an alternative plant with a fixed price that can improve people's income, 2) Realizing additional land, provision of seeds, and matrices for planting Indigofera tinctoria plants to meet the availability of sustainable raw materials, and 3) Providing assistance in care. The expected outputs to achieve an independent village are as follows: 1) Realization of a Cooperation Agreement for planting Indigofera tinctoria on at least 2 hectares, 2) Development of a planting system, plant care, and harvesting methods with optimal and sustainable quality, and 3) Availability of natural dye raw materials extracted from Indigofera tinctoria leaves that meet raw material quality standards and are sustainable. This research effectively improved the well-being of the residents of Calonejo Village, particularly the Gapoktan Sembada, Pacarejo Village by increasing the Indigofera plant nursery productivity of farmers. This research was successful due to the conclusion of a cooperation agreement to plant Indigofera tinctoria on an area of 3 hectares, the establishment of a planting system, plant care, and harvesting methods with optimal and sustainable quality, and the availability of raw materials for natural dyes extracted from Indigofera tinctoria leaves with optimal and sustainable quality. Information session, Group Discussion Forums (FGD), Training, and Direct Assistance methods are used.

Optimization of cotton fabrics dyeing process using various natural dye extracts Rahayuningsih, Edia; Marfitania, Taranipa; Pamungkas, Mukmin Sapto; Fatimah, Wachid Siti
Jurnal Rekayasa Proses Vol 16 No 1 (2022): Volume 16, Number 1, 2022
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.70397

Efforts to substitute synthetic dyes on fabrics for natural dyes are currently increasing. Research and innovation are extremely needed to support those attempts so that the quality of natural dyes is more competitive than synthetic dyes. This study aims to optimize the dyeing parameters of cotton fabrics using natural dye extracts derived from the barks of Tegeran (Cudrania javanensis), Merbau (Intsia bijuga), Tingi (Ceriops tagal), and Jambal (Peltophorum pterocarpum), as well as Jolawe (Terminalia bellirica) fruit peel. Varied dyeing parameters included dye concentration, dyeing time and temperature, and material to liquor ratio (MLR). The fixative solutions used were alum, lime, and iron (II) sulfate. The optimized parameters were based on the values of color depth and evenness, measured colorimetrically. Furthermore, the obtained results of the dyeing process under optimized conditions were analyzed for color quality by measuring color coordinates as well as the values of color strength (K/S), washing fastness, and light fastness. The results showed that the optimal dyeing conditions for all natural dye extracts used were the code A extract concentrations (0.0113 g/mL of Tegeran; 0.0115 g/mL of Merbau; 0.0204 g/mL of Jambal; and 0.0582 g/mL of Jolawe), dyeing at 28°C, dyeing time of 30 minutes, and the MLR of 1:30. The resulting color variations were brown, gray, and golden yellow for the Tegeran extract with alum fixative. The highest K/S value was 5.56 for the fabric dyed in Tegeran extract with iron (II) sulfate fixative solution. The washing fastness values for Merbau, Tingi, Jambal, and Jolawe were 3-4 (fairly good) to 4-5 (excellent). Meanwhile, the light fastness values for all dyes were between 4 (good) and 5 (excellent). Overall, the standard procedure for cotton fabric dyeing that meets the minimum standards for textile products is obtained.

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