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Investigation of the Extraction Parameters on Acquisition of Natural Colorants from Coleus atropurpureus L. Benth Leaves Using Microwave- and Ultrasonic-Assisted Extraction

Indonesian Food Science and Technology Journal · Vol. 8 No. 2 (2025) · hlm. 253–263

DOI
10.22437/ifstj.v8i2.42509
ISSN
2615-367X
Terbit
2025-07-28
Penerbit
Department of Technology of Agricultural product (THP) Jambi University
Bahasa
en
Lisensi
creativecommons.org/licenses/by/4.0

Abstrak

Abstract— This study systematically investigates the application of Microwave-Assisted Extraction (MAE) and Ultrasonic-Assisted Extraction (UAE) to extract natural pigments from Coleus atropurpureus L. Benth leaves, using water as a green solvent. These advanced techniques were selected over conventional methods due to their well-documented advantages, including shorter extraction times, higher extraction efficiencies, and reduced environmental impact through lower solvent consumption. Importantly, MAE and UAE are particularly suitable for isolating thermolabile compounds such as plant pigments, as they minimize thermal degradation while enhancing yield. Key extraction parameters (feed-to-solvent ratio (F/S), particle size, extraction time, temperature, microwave power, and ultrasonic frequency) were systematically varied to evaluate their influence on extraction performance. Additionally, an air flow system was integrated into both setups to study the effect of controlled airflow (1 to 4 L/min) on pigment yield. For MAE, optimal conditions included 400 W microwave power, an F/S ratio of 0.01 g/mL, particle size greater than 40 mesh, 40 minutes extraction time, and an airflow rate of 1 L/min. In the case of UAE, maximum yield was achieved at a frequency of 40 kHz, extraction temperature of 60°C, F/S ratio of 0.01 g/mL, 25 minutes extraction time, and an airflow rate of 1 L/min. The resulting extracts were characterized using phytochemical screening, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and gas chromatography (GC). Kinetic modeling, employing first- and second-order equations, demonstrated that the second-order kinetic model provided a better fit for both MAE and UAE processes, indicating complex interactions between solute and solvent. Overall, this study highlights the potential of MAE and UAE as efficient, eco-friendly alternatives for pigment extraction from Coleus leaves.

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  • Institut Teknologi Sepuluh Nopember
  • Universitas Muslim Indonesia
  • Universitas Gadjah Mada
  • Sebelas Maret University
  • Universitas Dr. Soetomo
  • Universitas Fajar
  • Islamic University of Indonesia
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Rekan penulisOrganisasiArtikel bersama
Achmad RoesyadiInstitut Teknologi Sepuluh Nopember3
Lailatul QadariyahInstitut Teknologi Sepuluh Nopember3
Heri Septya KusumaInstitut Teknologi Sepuluh Nopember3
Viqhi AswieInstitut Teknologi Sepuluh Nopember2
Rismawati RasyidUniversitas Muslim Indonesia2
Sri Rachmania JuliastutiInstitut Teknologi Sepuluh Nopember2
Suprapto SupraptoInstitut Teknologi Sepuluh Nopember2
Ruslan KallaInstitut Teknologi Sepuluh Nopember2
Rudi Hari MurtiUniversitas Gadjah Mada1
Jaka WidadaUniversitas Gadjah Mada1
Sudadi SudadiSebelas Maret University1
Izza Aliyatul MunaInstitut Teknologi Sepuluh Nopember1
Firman KurniawansyahInstitut Teknologi Sepuluh Nopember1
Adrianto PrihartantyoInstitut Teknologi Sepuluh Nopember1
Rahmaniah MalikUniversitas Muslim Indonesia1
Prilia Dwi AmeliaInstitut Teknologi Sepuluh Nopember1
Cininta AdmiraliaInstitut Teknologi Sepuluh Nopember1
Achmad ChafidzIslamic University of Indonesia1
Thonthowy JauharyInstitut Teknologi Sepuluh Nopember1
Mujtahid KaavessinaSebelas Maret University1
Fahamsyah Hamdan LatiefImam Mohammad ibn Saud Islamic University1
Lailan Ni’mahInstitut Teknologi Sepuluh Nopember1
Indah PurnamasariInstitut Teknologi Sepuluh Nopember1
Rheinanda RachmaditasariInstitut Teknologi Sepuluh Nopember1
Muhamad Irfaid DarojatInstitut Teknologi Sepuluh Nopember1
Ummu KalsumUniversitas Muslim Indonesia1
Viqhi AshwieAfiliasi tidak diketahui1
Ali AltwayInstitut Teknologi Sepuluh Nopember1
Nur Ihda Farikhatin NisaInstitut Teknologi Sepuluh Nopember1
Nabila Farras BalqisInstitut Teknologi Sepuluh Nopember1
Muhammad Anshorulloh MukhlishInstitut Teknologi Sepuluh Nopember1
Sinar Perbawani Abrina AnggrainiInstitut Teknologi Sepuluh Nopember1
Setiyo GunawanInstitut Teknologi Sepuluh Nopember1
Gede WibawaInstitut Teknologi Sepuluh Nopember1
Asalil MustainInstitut Teknologi Sepuluh Nopember1
Ansori AnsoriAfiliasi tidak diketahui1

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

Sumber metadata: OAI-PMH (metadata jurnal) https://online-journal.unja.ac.id/index.php/ifstj/oai, pertama di-harvest 6 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en">Investigation of the Extraction Parameters on Acquisition of Natural Colorants from Coleus atropurpureus L. Benth Leaves Using Microwave- and Ultrasonic-Assisted Extraction</dc:title>
	<dc:creator xml:lang="en">Yuniati, Yuyun</dc:creator>
	<dc:creator xml:lang="en">Gala, Selfina</dc:creator>
	<dc:creator xml:lang="en">Sumarno, Sumarno</dc:creator>
	<dc:creator xml:lang="en">Mahfud, Mahfud</dc:creator>
	<dc:subject xml:lang="en">Coleus atropurpureus</dc:subject>
	<dc:subject xml:lang="en">Microwave Assisted Extraction</dc:subject>
	<dc:subject xml:lang="en">Ultrasonic Assisted Extraction</dc:subject>
	<dc:subject xml:lang="en">Natural Colorants</dc:subject>
	<dc:subject xml:lang="en">Extraction</dc:subject>
	<dc:description xml:lang="en">Abstract— This study systematically investigates the application of Microwave-Assisted Extraction (MAE) and Ultrasonic-Assisted Extraction (UAE) to extract natural pigments from Coleus atropurpureus L. Benth leaves, using water as a green solvent. These advanced techniques were selected over conventional methods due to their well-documented advantages, including shorter extraction times, higher extraction efficiencies, and reduced environmental impact through lower solvent consumption. Importantly, MAE and UAE are particularly suitable for isolating thermolabile compounds such as plant pigments, as they minimize thermal degradation while enhancing yield. Key extraction parameters (feed-to-solvent ratio (F/S), particle size, extraction time, temperature, microwave power, and ultrasonic frequency) were systematically varied to evaluate their influence on extraction performance. Additionally, an air flow system was integrated into both setups to study the effect of controlled airflow (1 to 4 L/min) on pigment yield. For MAE, optimal conditions included 400 W microwave power, an F/S ratio of 0.01 g/mL, particle size greater than 40 mesh, 40 minutes extraction time, and an airflow rate of 1 L/min. In the case of UAE, maximum yield was achieved at a frequency of 40 kHz, extraction temperature of 60°C, F/S ratio of 0.01 g/mL, 25 minutes extraction time, and an airflow rate of 1 L/min. The resulting extracts were characterized using phytochemical screening, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and gas chromatography (GC). Kinetic modeling, employing first- and second-order equations, demonstrated that the second-order kinetic model provided a better fit for both MAE and UAE processes, indicating complex interactions between solute and solvent. Overall, this study highlights the potential of MAE and UAE as efficient, eco-friendly alternatives for pigment extraction from Coleus leaves.</dc:description>
	<dc:publisher xml:lang="en">Department of Technology of Agricultural product (THP) Jambi University</dc:publisher>
	<dc:date>2025-07-28</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://online-journal.unja.ac.id/ifstj/article/view/42509</dc:identifier>
	<dc:identifier>10.22437/ifstj.v8i2.42509</dc:identifier>
	<dc:source xml:lang="en">Indonesian Food Science and Technology Journal; Vol. 8 No. 2 (2025): Volume 8 Number 2, July 2025 |IFSTJ| ; 253-263</dc:source>
	<dc:source>2615-367X</dc:source>
	<dc:language>en</dc:language>
	<dc:relation>https://online-journal.unja.ac.id/ifstj/article/view/42509/21765</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2025 Indonesian Food Science and Technology Journal</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by/4.0</dc:rights>
</oai_dc:dc>