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All Journal Jurnal Harpodon Borneo PROSIDING SEMINAR KIMIA Science and Technology Indonesia
Ritson Purba, Ritson
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Materials Science & Nanotechnology Physics

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PEMANFAATAN BATU PADAS DALAM MENGADSORPSI LOGAM BERAT Pb (II) DI PERAIRAN Hutapea, Tri Paus Hasiholan; Yusuf, Bohari; Purba, Ritson
Jurnal Harpodon Borneo Vol 9, No 2 (2016): Volume 9 No 2 Oktober 2016
Publisher : Jurnal Harpodon Borneo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.121 KB) | DOI: 10.35334/harpodon.v9i2.166

Abstract

The research of increasing adsorption of the heavy metal iron by padas stone that activated by NaOH 4 N. The Result of survey show that acidity surface and capacity adsorption of padas stone that activited by a NaOH 4 N higher than padas stone which unactivited. Which acidity of surface and higher adsorption capacity aconed by padas stone that activited by NaOH 4 N namely 0,100 mmol/gram. In this research has show the increasing of padas stone adsorption to the ion heavy iron metal. Kata kunci : stone of padas ; adsorption ; Heavy metal ; Pb (II)
SKRINING FITOKIMIA DAN POTENSI ANTIBAKTERI EKSTRAK ETANOL DAUN SIRIH HUTAN (Piper aduncum L.) TERHADAP BAKTERI Escherichia coli DAN Staphylococcus aureus : A MINI REVIEW Sanjaya, I Made Duwi; Purba, Ritson; Saleh, Chairul
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Sirih hutan is a plant that belongs to the genus Piper and is found in many tropical areas, especially in tropical Asia. Sirih contains essential oils composed of betlephenol, cavikol, sesquiterpenes, hydroxycavikol, cavibetol, estragol, eugenol, and carvakrol which against Gram positive bacteria and Gram negative bacteria. Antibacterial activity test of ethanol extract of sirih hutan (Piper aduncum L.) has been conducted. This study aims to determine secondary metabolite compounds contained in sirih hutan leaves and potential as antibacterials, determined using the disc diffusion method. From the results of phytochemical tests, secondary metabolite compounds contained in sirih hutan are obtained in the form of alkaloids, steroids, phenolics, flavonoids, tannins, quinones and saponins. The results of the literature showed that sirih hutan leaf ethanol extract had antibacterial activity with the highest concentration used at 60% and the diameter of the inhibitory zone formed in Escherichia coli and Staphylococcus aureus was 14 mm. Keywords : Antibacterial, Forest Betel, Phytochemical Screening
ISOLASI SENYAWA AKTIF DARI LABAN (VITEX PINNATA) TUMBUHAN OBAT ASLI KALIMANTAN TIMUR DAN KALIMANTAN UTARA SEBAGAI BAHAN KOSMETIK Purba, Ritson; Azizah, Amanda Salwa Nur; Maulidawati, Rista
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Laban (Vitex pinnata), a natural medicinal plant of East and North Kalimantan, was the subject of an isolation process to produce active chemicals. This study uses a chromatography column with a solvent gradient system to carry out the fractionation or isolation process. The crude plant extract is first fractionated using a solvent with the least polarity, n-hexane, and then additional solvent is added. The goal is to ascertain the anti-bacterial and antioxidant activity of plant isolates as well as obtain pure compounds and describe the properties and structure of isolated compounds. Previously, an extract known as Laban (Vitex pinnata) extract was utilized. This plant was isolated, and the isolation yield for Laban (Vitex pinnata) was 85.06%. The chromotography column for Vitex pinnata is done by mixing a sample of 10 grams of Vitex pinnata leaf extract with a 37.5 gram sample of silica and then inserting it into the saturated chromotography column. The isolates were tested for their antioxidant activity and anti-bacterial P.acne (anti-acne). Test of antioxidant were determined by their antioxidant activity through the DPPH free reduction mechanism with 3 repetitions control. The test was using a UV-Vis spectrophotometer at a temperature of 25°C with a wavelength of 514 μm. Keywords: isolation, antioxidant, P.acne bacteria, cosmetics.
MINI REVIEW: PERBANDINGAN AKTIVITAS ANTIOKSIDAN BEBERAPA SPESIES DAUN SIRIH (Piper sp.) DAN POTENSINYA SEBAGAI TABIR SURYA Ningrum, Tika Setia; Purba, Ritson; Pasaribu, Subur P.
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The betel plant (Piper sp.) is a vine that is often used as a medicine or traditional potion. The part that is generally used as medicine is the leaves. Betel leaves can be used as an antiseptic, anti-dyslipid agent, anti-fungal, anti-inflammatory, anti-bacterial and antioxidant. The antioxidants in betel leaves can be used as sunscreen because they can reduce free radicals from exposure to sunlight. Antioxidant activity was tested using the DPPH (2,2 diphenyl-1-picryhydrazyl) method. In this article, a review of the antioxidant activity of various species of betel leaves is carried out, such as green betel leaves (Piper bettle), forest betel (Piper aduncum), Chinese betel (Pepperomia pellucida), yellow betel (Piper betle), and black betel (Piper acre). The results of the literature study show that the highest IC50 value is found in forest betel leaves (Piper aduncum) at 47.252 ppm and the lowest in black betel leaves (Piper acre) at 10.41 ppm. Based on that, the betel leaf that has the best antioxidant activity and potential as a sunscreen is black betel leaf (Piper acre). Keywords: Antioxidants, Betel Leaves, Sunscreen
ISOLASI SENYAWA AKTIF DARI BELALUQ LESOOQ (CLOTARIA PALLIDA AITON) TUMBUHAN OBAT ASLI KALIMANTAN TIMUR DAN KALIMANTAN UTARA SEBAGAI BAHAN KOSMETIK Purba, Ritson; Tsunami, Anissa
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Isolation of active compounds from medicinal plants native to East and North Kalimantan, namely Belalauq Lesooq (Crotalaria pallida), was carried out to obtain isolates from this plant. This research aims to determine the anti-bacterial and antioxidant activity of the plant. Isolation is carried out by fractionation or isolation methods using a chromatography column with a solvent gradient system. Starting from n hexane followed by a more polar solvent. where the crude plant extract is directly fractionated using a solvent of the lowest polarity, namely n-hexane, followed by adding a more polar solvent. The extract previously used was an extract obtained from the extraction of dry powder from the young leaves of the Belalauq Lesooq (Crotalaria pallida) plant. Isolation was carried out on this plant with an isolation yield for Belalauq Lesooq (Crotalaria pallida) of 90.64%. The isolates that were tested for their antioxidant activity and anti-bacterial P. acne (anti-acne) were the best isolates (BS18). The BS18 isolate was obtained at 0.2310 grams. The antioxidant activity test was found to be 32.82 mg/L using the DPPH reduction method (IC50) with the antibacterial P. acne inhibitory power being 13.33 mm. Where BS18 is a pure isolate obtained from n-hexane: ethyl acetate 6:4 fractionation. Keywords: isolation, antioxidant, P.acne bacteria, cosmetics.
The Utilization of Chitosan from Maggot (Hermetia illucens) Exuvia as Edible Coating for Tomatoes (Lycopersicon esculentum) and Edible Film with the Addition of Honey as an Antibacterial Agent Daniel; Sitorus, Saibun; Pasaribu, Subur P.; Marliana, Eva; Hairani, Rita; Ruga, Ritbey; Purba, Ritson; Saleh, Chairul; Pratiwi, Djihan Ryn; Magdaleni, Agustina Rahayu; Masmur, Indra; Masmur, Hestina
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1232-1241

Abstract

The use of chitosan from maggot (Hermetia illucens) exuvia as an edible coating for tomatoes (Lycopersicon esculentum) and an edible film with honey added as an antibacterial agent was investigated. This study aimed to determine the yield of chitosan from black soldier fly (BSF, Hermetia illucens) maggot exuviae as an edible coating. The chitosan was produced from chitin by deacetylation, and its effect on the weight loss and vitamin C levels of tomatoes for 7 days after treatment was investigated. The chitosan coating was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy. The antibacterial activity was evaluated using a disk diffusion method. The result showed that by deacetylation, conversion of chitin produced chitosan with a yield of 72% and a deacetylation degree of 75.05%. The chitosan coating significantly affected the weight loss of tomatoes, with the best concentration being 2%. However, the treatment did not significantly affect the decrease in vitamin C levels. The edible chitosan film from BSF maggot exuviae with added honey had a thickness, water content, and water vapor transmission rate of 0.156 mm, 16.9913%, and 30.45 g/m2/24 hours, respectively. SEM characterization showed a relatively dense surface structure, which was slightly smooth and porous. Regarding antibacterial activity, the edible chitosan film inhibited Staphylococcus aureus with an inhibition zone of 10.37 mm; however, Escherichia coli was not inhibited. These results suggest that chitosan from BSF maggot exuviae has potential as an effective edible coating for reducing weight loss in tomatoes despite showing limited antibacterial properties.
Co-Authors Azizah, Amanda Salwa Nur Bohari Yusuf Chairul Saleh Daniel Djihan Ryn Pratiwi, Djihan Ryn Enos Tangke Arung, Enos Tangke Eva Marliana, Eva Hairani, Rita Indra Masmur Magdaleni, Agustina Rahayu Masmur, Hestina Maulidawati, Rista Ningrum, Tika Setia Ruga, Ritbey Saibun Sitorus Sanjaya, I Made Duwi Subur P Pasaribu Teddy Tranoto, Teddy Tri Paus Hasiholan Hutapea, Tri Paus Hasiholan Tsunami, Anissa