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All Journal Jurnal Pangan dan Agroindustri The Journal of Pure and Applied Chemistry Research Pharmascience Jurnal Penelitian Pendidikan IPA (JPPIPA) SPIN: Jurnal Kimia & Pendidikan Kimia Jurnal Pijar MIPA al Kimiya : Jurnal Ilmu Kimia dan Terapan International Journal of Science, Technology and Applications
Yuli Kusuma Dewi
Universitas Islam Negeri Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics

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Effect of Fermentation Time and Concentration of Local Microorganisms (MOL) of Rice Straw on Nitrogen Levels in Cow Biourine Amin, Muhamad; Dewi, Yuli Kusuma; Jayadi, Edi M
International Journal of Science, Technology and Applications Vol 1 No 1 (2023): Volume 1 Number 1 Tahun 2023
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v1i1.37

Abstract

Biourine is urine taken from livestock, especially ruminants, which is fermented before being used. The purpose of this study was to determine the effective fermentation time and local microorganism concentration (MOL) of rice straw to produce the highest nitrogen content in bovine biourine. Biourine is obtained through the fermentation method and analysis of nitrogen levels using the Kjehdahl method. The fermentation treatment given to bioourine was for 10 and 15 days of treatment using 4 combinations of MOL concentrations of straw, cow urine and EM4 used. The results of the analysis of nitrogen levels in biourine fermented for 15 days were much higher than those fermented for 10 days. The total N levels in biourine fermentation for 15 consecutive days from K1, K2, K3 and K4 were 0.0828%, 0.1110%, 0.1074% and 0.0836%. It can be seen that the highest nitrogen content is at the second concentration with a combination of 50 grams of straw, 1000 mL of cow urine, and 5 mL of EM4. So that the use of the MOL concentration with a fermentation time of 15 days was able to increase total nitrogen levels significantly when compared to control urine which only contained 0.0399% nitrogen if done without fermentation
Evaluation of General Bioactive Phytochemicals, Antioxidant Activity, and Organoleptic Properties of Ficus racemosa L. as Herbal Tea Novia Suryani; Yuli Kusuma Dewi; Baiq Rauhil Hidayanti
Jurnal Penelitian Pendidikan IPA Vol 11 No 4 (2025): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i4.11024

Abstract

Ficus rasemosa L. (FR), commonly known as a fig tree in Asia, is traditionally consumed in Lombok and recognized for its medicinal due to its phenolic compounds, as general bioactive compounds FR contain, have benefits such as being antidiabetic properties. Despite its ethnobotanical significance, limited studies have explored the development of FR fruits as a functional herbal tea, particularly concerning processing variables such as drying temperatures. This study evaluated the effects of three drying temperatures—50 oC (T1), 60 oC (T2), and 70 oC (T3)—on the total flavonoid content (TFC), total phenolic content (TPC), antioxidant activity (DPPH free radical scavenging assay), and organoleptic properties of FR herbal tea. The TFC, TPC, and DPPH assay were quantified using UV-VIS spectrophotometry. The highest TFC (1.96 g QE/g) and TPC (0.36 g GAE/g) were observed at 50 oC, while the strongest antioxidant activity with the lowest IC50 of 192.27 ppm occurred at 60 oC. Sensory evaluation showed the teas dried at 60 and 70oC were more acceptable, particularly in terms of color and overall preference. These results suggest that drying at 60 oC offers an optimal balance between phytochemical, antioxidant activity, and sensory quality, highlighting the potential of RF fruit as functional herbal tea.
Co-Authors Annisa Zikri Robbia Aulanni'am Aulanni'am Baiq Amelia Riyandari Baiq Rauhil Hidayanti Chanif Mahdi Herza Meiliya Mi'atul Hasanah Hidayanti, Baiq Rauhil Isti Malasari Istiqomah Istiqomah Jayadi, Edi M Muhamad Amin Ning Baizuroh Novia Suryani Novia Suryani Raehanah Raehanah Yahdi Yahdi, Yahdi