A solvent extraction of 6- gingerol from fresh ginger rhizome chips using n-hexane has been successfully carried out. This study aimed to investigate the effects of temperature, feed size, and feed mass on the yield of gingerol, to observe the kinetics of gingerol extraction process using n-hexane as a solvent, to find the most influential parameters in the gingerol extraction process and to determine the optimum conditions of the gingerol extraction process. The experiment was carried out for 60 minutes using two feed mass ( 50 and 75 g), two temperature (60 and 70 oC) and two chips sizes (100 and 25 mm3) using 350 mL n-hexane. The second-order kinetics model was used to study the extraction kinetic parameters. The quick method was used to evaluate the most influential extraction parameters with respect to the yield of gingerol. Feed mass was found to be the most influential parameter in the gingerol extraction process. The optimum extraction conditions were found to be at 60 °C, ginger rhizome chips with 25 mm size3, feed mass was 109.7g and 350 mL n-hexane, which resulted in crude extract with gingerol content of 517.11 ppm.
Tahun 2020 merupakan tahun yang cukup sulit bagi masyarakat Indonesia. Adanya virus corona jenis baru memaksa masyarakat untuk beradaptasi dengan kebiasaan baru. Salah satu masalah terbesar yang dihadapi adalah dengan adanya kebijakan lockdown yang menyebabkan sulitnya distribusi bahan pangan. Oleh sebab itu edukasi masyarakat untuk memanfaatkan lahan pekarangan secara organik dengan mengoptimalkan sumber daya yang ada disekitar pekarangan rumah perlu dilakukan. Tujuan penelitian ini adalah untuk mengetahui respon tanaman cabai keriting dengan menggunakan pupuk fermentasi urin sapi. Penelitian dilakukan dengan cara memberikan perlakuan variasi pemupukan dengan mencampur urin sapi dan EM4 (perlakuan A); urin sapi, EM4, dan batang pohon pisang (perlakuan B); urin sapi, EM4, dan sabut kelapa (perlakuan C); dan urin sapi, EM4, dan akar kacang tanah (perlakuan D). Parameter yang diamati dalam penelitian ini adalah tinggi tanaman, jumlah daun, diameter batang, dan bobot biomassa kering tanaman. Perlakuan penambahan sabut kelapa pada fermentasi urin sapi memberikan pengaruh yang nyata pada parameter tinggi tanaman. Sedangkan penambahan akar kacang tanah pada fermentasi pupuk urin sapi meningkatkan bobot biomassa kering tanaman secara signifikan. Penambahan batang pohon pisang pada fermentasi urin sapi secara nyata memberikan pengaruh terhadap diameter batang tanaman cabai keriting. Akan tetapi, jumlah daun tidak menunjukkan perbedaan yang signifikan dari semua jenis pemupukan. The year 2020 is quite a difficult year for the people of Indonesia. The existence of a new coronavirus type forces people to adapt to new habits. One of the biggest problems faced is the lockdown policy which makes it difficult for food distribution. Therefore, it is necessary to educate the public to utilize the yard organically by optimizing the existing resources around the yard of the house. This study aimed to determine the response of curly chili plants using cow urine fermentation fertilizer. The research was conducted by giving various fertilization treatments by mixing cow urine and EM4 (treatment A); cow urine, EM4, and banana tree trunks (treatment B); cow urine, EM4, and coconut husk (treatment C); and cow urine, EM4, and groundnut root (treatment D). Parameters observed in this study were plant height, number of leaves, stem diameter, and dry biomass weight of the plant. The addition of coconut fiber in cow urine fermentation has a significant effect on plant height parameters. Meanwhile, the addition of groundnut roots to fermented cow urine fertilizer increased the dry biomass weight of the plant significantly. The addition of banana tree trunks to cow urine fermentation significantly affected the stem diameter of curly chili plants. However, the number of leaves did not show a significant difference between all types of fertilization.
Tepung tapioka di industri kecil menengah dikeringkan dengan metode konvensional dengan dihamparkan dibawah sinar matahari. Kendala utamanya adalah kecepatan pengeringan rendah. Oleh karena itu, dalam penelitian ini tepung tapioka dengan kadar air 40 ± 5% telah dikeringkan menggunakan pengering fluidisasi menjadi tepung tapioka dengan kadar air dibawah 15% (basis basah). Penelitian ini bertujuan untuk menganalisis pengaruh suhu udara pengering dan masa umpan terhadap kecepatan pengeringan. Parameter operasi yang diteliti adalah suhu pengeringan (40, 50 dan 60°C) dan masa umpan tapioka (100, 200, dan 300 g). Hasil eksperimen menunjukkan adanya periode pengeringan laju konstan sampai kadar uap air padatan 0,4 yang kemudian menunjukkan periode menurun. Semakin tinggi suhu pengering, maka laju pengeringan semakin besar. Sedangkan semakin banyak masa padatan yang diumpankan, maka laju pengeringan semakin rendah.
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