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Produksi Pigmen Klorofil Terenkapsulasi dari Daun Kangkung (Ipomea reptans Poir.) Dengan Teknik Mikroenkapsulasi Desy Nurliasari Suparno; Damar Wiraputra wiraputra
Majalah TEGI Vol 10, No 1 (2018): Majalah TEGI Vol 10 No 1 Juni 2018
Publisher : Kementerian Perindustrian

Daun kangkung mengandung pigmen klorofil yang dapat dimanfaatkan sebagai pewarna alami untuk makanan. Ekstrak pekat pigmen klorofil dari daun kangkung merupakan bahan yang sangat kental sehingga agak sulit dan kurang praktis dalam penggunaannya. Hal ini dapat diatasi dengan manggunakan teknik mikroenkapsulasi sehingga mempermudah penggunaan dan meningkatkan umur simpannya. Bahan penyalut yang digunakan untuk mikroenkapsulasi ekstrak pigmen klorofil ini adalah dekstrin dan gum arab. Metode yang digunakan pada penelitian ini adalah deskriptif dengan 6 perlakuan dan 2 kali ulangan. Perlakuan yang digunakan adalah penggunaan bahan penyalut dekstrin dengan konsentrasi 5%, 7,5%, dan 10% (b/v) dan gum arab dengan konsentrasi 5%, 7,5%, dan 10% (b/v) dari total volume bahan. Hasil penelitian menunjukan penggunaan bahan penyalut dekstrin dengan konsentrasi 10% (b/v) menghasilkan bubuk pigmen klorofil dari daun kangkung dengan karakteristik terbaik, yaitu memiliki nilai intensitas warna hijua (nilai a) yaitu – 19.97, nilai HUE 127.42 (melefleksikan warna kuning kehijauan), rendemen 2.99%, kadar air 1,80%, kelarutan 97.48%, waktu rehidrasi 36.4 detik, dan nilai pH 8,1

Produksi Pigmen Klorofil Terenkapsulasi dari Daun Kangkung (Ipomea reptans Poir.) Dengan Teknik Mikroenkapsulasi Desy Nurliasari Suparno; Damar Wiraputra wiraputra
Majalah TEGI Vol 10, No 1 (2018): Majalah TEGI Vol 10 No 1 Juni 2018
Publisher : Kementerian Perindustrian

Daun kangkung mengandung pigmen klorofil yang dapat dimanfaatkan sebagai pewarna alami untuk makanan. Ekstrak pekat pigmen klorofil dari daun kangkung merupakan bahan yang sangat kental sehingga agak sulit dan kurang praktis dalam penggunaannya. Hal ini dapat diatasi dengan manggunakan teknik mikroenkapsulasi sehingga mempermudah penggunaan dan meningkatkan umur simpannya. Bahan penyalut yang digunakan untuk mikroenkapsulasi ekstrak pigmen klorofil ini adalah dekstrin dan gum arab. Metode yang digunakan pada penelitian ini adalah deskriptif dengan 6 perlakuan dan 2 kali ulangan. Perlakuan yang digunakan adalah penggunaan bahan penyalut dekstrin dengan konsentrasi 5%, 7,5%, dan 10% (b/v) dan gum arab dengan konsentrasi 5%, 7,5%, dan 10% (b/v) dari total volume bahan. Hasil penelitian menunjukan penggunaan bahan penyalut dekstrin dengan konsentrasi 10% (b/v) menghasilkan bubuk pigmen klorofil dari daun kangkung dengan karakteristik terbaik, yaitu memiliki nilai intensitas warna hijua (nilai a) yaitu – 19.97, nilai HUE 127.42 (melefleksikan warna kuning kehijauan), rendemen 2.99%, kadar air 1,80%, kelarutan 97.48%, waktu rehidrasi 36.4 detik, dan nilai pH 8,1

Analysis of Cellulose and Cellulose Acetate Production Stages from Oil Palm Empty Fruit Bunch (OPEFB) and Its Application to Bioplastics Aisyah Hanifah; Efri Mardawati; S Rosalinda; Desy Nurliasari; Roni Kastaman
Journal of Chemical Process Engineering Vol 7, No 1 (2022)
Publisher : Universitas Muslim Indonesia

AbstractOil Palm Empty Fruit Bunch (OPEFB) is a type of solid waste from the palm oil processing industry. The components of OPEFB include cellulose, hemicellulose, and lignin. OPEFB has a large cellulose content, so it possesses the potential to be used as a bioplastic material. The purpose of this research was to examine the stages of the bioplastics' production process and its characterization. The cellulose content of OPEFB as raw material and during the isolation process which includes hydrolysis, delignification, pulping, and bleaching are 39.59%, 56.00%, 59.85%, 61.48%, and 68.20%, respectively. Cellulose isolation produces α-cellulose content of 97.87%. The resulting cellulose acetate has an acetyl content of 25.93%. The bioplastics were then characterized to determine the effect of cellulose acetate, starch, chitosan, and glycerol on the physical and mechanical properties of the plastics. The results of the physical properties characterization include biodegradability, water absorption, and density with values of 78.73%, 38.26%, and 1.2% respectively. The results of the mechanical properties characterization include tensile strength, elongation, and modulus of elasticity with values of 0.729 MPa, 4.13%, and 17.5 MPa, respectively. The functional groups in the bioplastics, which are O-H, C-H, C-O, C=O, and N-H, are produced from the mixing process between cellulose acetate, starch, chitosan, and glycerol.

Pengaruh Temperatur Pengeringan serta Dimensi Biobriket Tempurung Kelapa terhadap Kualitas dan Kelayakan Ekonominya Indah Mayangsari Putri Setiawan; Efri Mardawati; Desy Nurliasari
Jurnal Teknologi Pertanian Andalas Vol 26, No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jtpa.26.2.175-182.2022

Biobriket tempurung kelapa perlu dijamin kualitasnya serta ditentukan kelayakan ekonominya sesuai dengan standar agar dapat dipasarkan. Kualitas biobriket dapat ditentukan berdasarkan kadar air dan keretakan produk yang nilainya dipengaruhi oleh proses pengeringan. Adapun proses pengeringan dipengaruhi oleh beberapa faktor kondisi (proses) yang meliputi temperatur pengeringan dan dimensi biobriket yang dikeringkan. Penelitian ini bertujuan untuk mengetahui pengaruh temperatur pengeringan dan dimensi biobriket tempurung kelapa terhadap karakteristik mekanik berupa keretakan dan kadar airnya serta untuk menentukan kelayakan ekonomi produk biobriket. Rancangan acak lengkap digunakan dalam penelitian ini dengan memperhatikan dua faktor pengaruh yang meliputi temperatur pengeringan (75ºC, 100ºC, 125ºC) dan dimensi biobriket C15 (25 mm x 25 mm × 15 mm) serta C25 (25 mm × 25 mm × 25 mm). Perbedaan temperatur pengeringan dan dimensi biobriket memberikan pengaruh yang signifikan terhadap kadar air dan tingkat keretakan produk. Hasil analisis menunjukkan temperatur pengeringan dan dimensi biobriket yang menghasilkan tingkat kadar air dan keretakan memenuhi standar yaitu 75ºC untuk C15 dan 100ºC untuk C25. Pada analisis kelayakan ekonomi produksi biobriket tempurung kelapa menunjukkan usaha pada bidang ini dianggap layak atau memenuhi seluruh ketentuan yang ada.

Optimization on turmeric extraction to obtain curcuminoid with low-cost operation technique Abil Fadila; Efri Mardawati; Desy Nurliasari; Roni Kastaman; Selly Harnesa Putri
Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Vol 6, No 2 (2023)
Publisher : Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.afssaae.2023.006.02.10

Turmeric (Curcuma longa L.) has become one of the potential plants to be developed due to its numerous benefits from the active ingredient, curcuminoid. Curcuminoid has antibacterial, antioxidant, and antihepatotoxic properties that can enhance the absorption of vitamins A, D, E, and K. The process to obtain curcuminoid can be carried out through an extraction process using a solvent. This research aimed to optimize the extraction process of curcuminoid from turmeric at a lower cost. The response surface methodology with a central composite design was used in this study to optimize the concentration of ethanol solvent (50-90%, v/v) and the flow rate of ethanol solvent (20-40 mL/minute) on the yield and curcuminoid. The research results indicate that the optimum conditions for the percolation extraction process (ethanol concentration = 90% and ethanol flow rate = 20 mL/minute) result in a yield value of 22.75% (w/w) and curcuminoid content of 13.54% (w/v). The curcuminoid was characterized based on several parameters, including water content of 11.15% (w/w) and antioxidant activity of 98.39% (w/v). The research concludes that the optimum results of the process conditions demonstrate the percolation extraction method with the variables of ethanol concentration and minimal ethanol solvent flow rate, which require lower costs while yielding optimum yield and curcuminoid content. Therefore, this can be applied in further research on curcumin production or its application in the food and non-food industries.

Sunscreen Activity Determination on Hippobroma Longiflora Leaves Extracts Affected to Differences in Simplicia Treatments and Extraction Techniques Awaly Ilham Dewantoro; Selly Harnesa Putri; Efri Mardawati; Desy Nurliasari
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 9, No 2 (2022): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v9i2.20502

Various weeds in paddy rice fields could be utilized as natural polyphenols sources, one of them was kitolod (Hippobroma longiflora (L.) G.Don). Kitolod was widely utilized as traditional medicine by several community groups because of its polyphenols content. Recent trends showed kitolod could be valorized as additive matters in sunscreen products. Polyphenols content, especially flavonoids were able to absorb dangerous spectrum in sunray radiation and it is related to sunscreen activity. This study aimed to evaluate the differences in simplicia treatments and extraction techniques towards total polyphenols content and sunscreen activity on kitolod leaf extracts. Solvent-cold extraction techniques were deployed in this study that consist of water infusion and ethanolic maceration for 24 hours at ambient temperature. Extracts were analyzed by spectrophotometric measurement to determine total phenolics content (TPC), total flavonoids content (TFC), and sunscreen activity by deploying Folin-Ciocalteu assay, AlCl3 colorimetric assay, and Mansur approached assay, respectively. Dry kitolod leaves were extracted by ethanolic maceration techniques provided high yields (15.5±0.3%), high TPC (17.9±0.3 mg GAE/g of solids), high TFC (25.9±0.4 mg QE/g of solids), and moderate sunscreen activity (SPF 11.0±0.1). The results indicated kitolod could be valorized as natural polyphenols sources and additive matters in any cosmetical sunscreen products.

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