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All Journal Biopropal Industri ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Pure and Applied Chemistry Jurnal Akademika Kimia Jurnal Akademika Kimia (Journal of Environmental Sustainability Management)

Nurlina, Nurlina

Jurusan Kimia, FMIPA, Universitas Tanjungpura, Pontianak, Indonesia

Author-ID : 1793534

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Oil Palm Empty Bunch Compost as a Source of Humic Acid Irma D. Oktavianta; Gusrizal Gusrizal; Nurlina Nurlina
Jurnal Akademika Kimia Vol. 9 No. 4 (2020)
Publisher : Universitas Tadulako

Humic acid is a fraction of humic compounds that are part of soil organic matter. In this research, humic acid is extracted from oil palm empty fruit bunches compost. Compost is made from the process of counting the empty oil palm bunches, which are composted until the compost is cooked. The humic acid extraction process uses a strong base extraction method. The principle of humic acid extraction is to dissolve the humic compound with a base solution and then separate it by adding an acid solution (HCl solution). The extraction of humic acid from oil palm empty fruit bunches compost produced blackish-brown humic acid with a yield of 4.895%. The result showed that the main functional group content of palm oil empty fruit bunches compost humic acid was the -OH group and phenol group which had a conjugated carbonyl group and a more aliphatic humic acid structure. Quantitatively, the functional groups of humic acid functional groups each amounted to a total acidity of 7,400 cmol/kg, a carboxylic group of 520 cmol/kg, and a phenolic -OH group content of 6,880 cmol/kg. Research results show that oil palm empty fruit bunches compost can be used as a source of humic acid.

Flavonoid Compounds of the Catechin from Wungu (Graptophyllum pictum (L.) Griff) Leaves and the Sun Protecting Factor Value Masyita Masyita; Endah Sayekti; Nurlina Nurlina
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

The flavonoid content in wungu (Graptophyllum pictum (L.) Griff.) leaves has the potential as a sunscreen. The study aims to identify isolates of flavonoid compounds from wungu leaves and determine the SPF value. Steps are followed by extraction, fractionation, phytochemical test, separation by chromatography, identification, and SPF test. Extraction was carried out with methanol, followed by fractionation with n-hexane and dichloromethane. Dichloromethane fraction was chosen to proceed to the separation step because the results of the phytochemical test showed a vigorous color intensity for the content of flavonoids. The isolate (3.6 mg; dark green; amorphous; mp. 132-136 °C) was identified using a UV-Vis spectrophotometer using methanol as a solvent with a shift reagent NaOH, AlCl3, and a mixture of concentrated AlCl3 and HCl. Based on the UV-Vis spectra, the isolate was predicted to be flavonoid compounds belonging to the catechin group, which have a hydroxyl group at positions C-3, C-7, and do not have an ortho-hydroxy group in ring B. The SPF value of the isolate of 2.3244 at 100 ppm was determined in vitro and calculated by the Qian equation. Therefore, isolate was categorized as sunscreens that provided minimal protection

Co-Authors Annisa Bella Maharani Ari Widiyantoro Chyntia Nabela Deni Pranata Endah Sayekti Gusrizal Gusrizal Hanna Sjafarina Hargiani, Fransisca Xaveria Imelda Hotmarisi Silalahi Intan Syahbanu Irma D. Oktavianta Lia Destiarti Maria Desi Furnata Mas Inda Putrinesia Masyita Masyita Mirna Tersiana Tamnasi Nelly Wahyuni Puji Ardiningsih R RE Moelyani Risya Sasri Rizky Noviani Ridwan Sri Juari Santosa T A Zaharah Winda Rahmalia Yatim Mustakim Yossy Yossy

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