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All Journal Diagnosis: Jurnal Ilmiah Kesehatan Hydrogen: Jurnal Kependidikan Kimia Room of Civil Society Development Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Journal of Pharmaceutical Science and Herbal Technology Jurnal Kesehatan Cendikia Jenius Room of Civil Social Development Jurnal Ilmiah Mahasiswa & Penelitian Keperawatan The International Journal of Remote Sensing and Earth Sciences (IJReSES)
Hasnaeni
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Quantification of Flavonoid Compounds in Keji Beling Leaves (Strobilanthes Crispa (L.) Blume) Extracted by Ultrasonic Assisted Extraction (UAE) and Maceration Using TLC Densitometry Hasnaeni; Handayani, Selpida; Utami, Fadhillah Resky; Majid, Nini Nirmala
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 5 (2025): October 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i5.17748

Abstract

Keji Beling leaves (Strobilanthes crispa (L.) Blume) contain secondary metabolites such as flavonoids, tannins, saponins, alkaloids, and polyphenols. These secondary metabolites have antioxidant, antidiabetic, and anticancer activities. In this study, flavonoid identification was tested using thin-layer chromatography (TLC), followed by determination of the flavonoid content in Keji Beling leaf extract (Strobilanthes crispa (L.) Blume) using the densitometry method. The extraction methods used were Ultrasonic Assisted Extraction (UAE) and maceration using 70% ethanol solvent, yielding extracts with a yield of 15.143% and 11.092%, respectively.Quantification of flavonoid compounds using quercetin standard showed that the average flavonoid content of keji beling leaf extract using the Ultrasonic Assisted Extraction (UAE) method was 0.057 mg/mL and using the maceration method was 0.156 mg/mL. This study aims to determine the flavonoid content of keji beling extract using the TLC densitometry method.    
RELATIVE HUMADITY ESTIMATION BASED ON MODIS PRECIPITABLE WATER FOR SUPPORTING SPATIAL INFORMATION OVER JAVA ISLAND Parwati Sofan; Totok Sugiharto; Hasnaeni
International Journal of Remote Sensing and Earth Sciences Vol. 4 (2007)
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.ijreses.2007.v4.a1215

Abstract

This research is performed to derive weather property, i.e. relative humidity, based on precipitable water from MODIS (Moderate Resolution Imaging Spectroradiometer) data which on board of TERRA/AQUA satellites. As one of dynamic atmospheric parameters, the precipitable water has ability to indicate the dryness or wetness of a certain area. It can be derived by MODIS at 0.865, 1.24, 0.905, 0.936 and 0.940 um of its wavelength ranges. Verification of MODIS precipitatble water is made using radiosonde data at 2 climatological stations in Java island (Jakarta and Surabaya). The result shows that the standard deviation between precipitable water which is derived by MODIS and radiosonde data (August-October 2004), is 1.6 cm, Meanwhile, through the statistical analysis, they have significant correlation of about 0.82. In adition, the relationship between the MODIS precipitable water and the altitude has a negative correlation (r= -0.98). It means that the precipitable water tends to decrease along with the increase of altitude, According to the climate condition in West Java which is mostly wetter rather than of East Java, we knew that the precipitable water in West Java is higher than East Java. Related to related to relative humidity, the mODIS precipitable water can be used to estimate relative humidity, based on topography area, the correlation coeficient between 0.84-0.92.
Co-Authors Firawati Firawati Firawati Fitriani Fajri Ahmad Hasnita Jangga Latifah Al Sadilah Majid, Nini Nirmala mardani, andi Mochammad Imron Awalludin Parwati Sofan pratiwi, andi mutmamainnah Purnamasari, Lili Selpida Handayani, Selpida Suhartatik Totok Sugiharto Utami, Fadhillah Resky