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All Journal Jurnal Riset Kimia Jurnal Kimia Mulawarman Jurnal Kimia Riset Chimica et Natura Acta Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat IJOEP : International Journal of Ecophysiology Journal of Multidisciplinary Applied Natural Science JURNAL KIMIA SAINTEK DAN PENDIDIKAN JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR) Journal of The Indonesian Society of Integrated Chemistry Biodiversitas Journal of Biological Diversity
Sovia Lenny
Departemen Kimia Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Sumatera Utara Medan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences

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PERBANDINGAN KOMPOSISI KIMIA MINYAK ATSIRI KULIT BUAH JERUK SUNDAI (CITRUS JHAMBIRI LUSH) SEGAR DAN KERING YANG DIPEROLEH SECARA DESTILASI Lenny, Sovia
Jurnal Riset Kimia Vol 1, No 1 (2007): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v1i1.77

Abstract

 ABSTRACTEssential oils was isolated from peels sundai orange (Citrus jhambiri Lush) by destilation. Product was characterized by GC-MS. The product research show content essential oil of fresh peels are 1.260% and dried peels are 1.312%. Limonen content as major component of fresh peels are 58.49% and dried peels are 55.80%.Keyword : Citrus jhambiri Lush, essential oil, limonen
AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOIDA DARI DAUN BENALU KAKAO (Dendrophthoe pentandra (L.) Miq.) Sembiring, Helmina Br.; Lenny, Sovia; Marpaung, Lamek
Chimica et Natura Acta Vol 4, No 3 (2016)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.266 KB) | DOI: 10.24198/cna.v4.n3.10920

Abstract

Penelitian ini bertujuan untuk mendeteksi senyawa fitokimia dan menguji aktivitas antioksidan ekstrak metanol, ekstrak  etil asetat, total flavonoida dan flavonoid aglikona  daun benalu kakao (Dendrophthoe pentandra (L.) Miq.). Serbuk kering daun D. pentandra (L.) Miq. (10 kg) dimaserasi dengan menggunakan metanol, ekstrak metanol diekstraksi kembali dengan etil asetat, ekstrak etil asetat dipartisi dengan n-heksana. Residu yang tersisa (total flavonoida) dihidrolisis dengan HCl 2 N sehingga diperoleh flavonoid aglikona.  Diperoleh ekstrak metanol sebanyak  830 g (8,3%), ekstrak etil asetat 108 g (1,08%), total flavonoida 45 g (0,06%) dan flavonoid aglikona 6,2 g (0,06%) dan semua ekstrak  berwarna hitam. Berdasarkan hasil skrining fitokimia yang dilakukan ekstrak metanol D. pentandra (L.) Miq.  mengandung senyawa flavonoida, tanin, terpenoid, saponin dan tidak terdeteksi adanya alkaloid. Ekstrak etil asetat mengandung senyawa flavonoida, terpenoid dan saponin dan tidak terdeteksi adanya tanin dan alkaloid. Total flavonoida hanya mengandung flavonoida dan tidak terdeteksi adanya saponin, tanin, alkaloid dan terpenoid. Ekstrak metanol, etil asetat, total flavonoida dan flavonoid aglikona daun D. pentandra (L.) Miq. memiliki aktivitas antioksidan dengan nilai IC50  berturut-turut sebesar 30,31; 36,23; 24,07 dan 18,22 mg/mL. Sedangkan asam askorbat sebagai kontrol menunjukkan nilai IC50  12,08  mg/mL. Senyawa flavonoida dari daun benalu kakao (D. pentandra (L.) Miq.) dapat berfungsi sebagai antioksidan namun aktivitasnya lebih rendah dari pada asam askorbat.
AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOIDA DARI DAUN BENALU KAKAO (Dendrophthoe pentandra (L.) Miq.) Helmina Br. Sembiring; Sovia Lenny; Lamek Marpaung
Chimica et Natura Acta Vol 4, No 3 (2016)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.266 KB) | DOI: 10.24198/cna.v4.n3.10920

Abstract

Penelitian ini bertujuan untuk mendeteksi senyawa fitokimia dan menguji aktivitas antioksidan ekstrak metanol, ekstrak  etil asetat, total flavonoida dan flavonoid aglikona  daun benalu kakao (Dendrophthoe pentandra (L.) Miq.). Serbuk kering daun D. pentandra (L.) Miq. (10 kg) dimaserasi dengan menggunakan metanol, ekstrak metanol diekstraksi kembali dengan etil asetat, ekstrak etil asetat dipartisi dengan n-heksana. Residu yang tersisa (total flavonoida) dihidrolisis dengan HCl 2 N sehingga diperoleh flavonoid aglikona.  Diperoleh ekstrak metanol sebanyak  830 g (8,3%), ekstrak etil asetat 108 g (1,08%), total flavonoida 45 g (0,06%) dan flavonoid aglikona 6,2 g (0,06%) dan semua ekstrak  berwarna hitam. Berdasarkan hasil skrining fitokimia yang dilakukan ekstrak metanol D. pentandra (L.) Miq.  mengandung senyawa flavonoida, tanin, terpenoid, saponin dan tidak terdeteksi adanya alkaloid. Ekstrak etil asetat mengandung senyawa flavonoida, terpenoid dan saponin dan tidak terdeteksi adanya tanin dan alkaloid. Total flavonoida hanya mengandung flavonoida dan tidak terdeteksi adanya saponin, tanin, alkaloid dan terpenoid. Ekstrak metanol, etil asetat, total flavonoida dan flavonoid aglikona daun D. pentandra (L.) Miq. memiliki aktivitas antioksidan dengan nilai IC50  berturut-turut sebesar 30,31; 36,23; 24,07 dan 18,22 mg/mL. Sedangkan asam askorbat sebagai kontrol menunjukkan nilai IC50  12,08  mg/mL. Senyawa flavonoida dari daun benalu kakao (D. pentandra (L.) Miq.) dapat berfungsi sebagai antioksidan namun aktivitasnya lebih rendah dari pada asam askorbat.
PERBANDINGAN KOMPOSISI KIMIA MINYAK ATSIRI KULIT BUAH JERUK SUNDAI (CITRUS JHAMBIRI LUSH) SEGAR DAN KERING YANG DIPEROLEH SECARA DESTILASI Sovia Lenny
Jurnal Riset Kimia Vol. 1 No. 1 (2007): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v1i1.77

Abstract

 ABSTRACTEssential oils was isolated from peels sundai orange (Citrus jhambiri Lush) by destilation. Product was characterized by GC-MS. The product research show content essential oil of fresh peels are 1.260% and dried peels are 1.312%. Limonen content as major component of fresh peels are 58.49% and dried peels are 55.80%.Keyword : Citrus jhambiri Lush, essential oil, limonen
ISOLASI SENYAWA ALKALOID DARI DAUN SIDAGURI (Sida rhombifolia L.) Sovia Lenny; Tonel Barus; Evi Yoana S
JURNAL KIMIA MULAWARMAN Vol 8 No 1 (2010)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The secondary metabolite compound was isolated from sidaguri (Sida rhombifolia L.) leaves. The diethylether extract was subjected to a column chromatography with a mixture of chloroform:methanol (7:3) was obtained as amorf  (59 mg). The FT-IR and 1H-NMR spectrum indicated the isolated compound was alkaloid compound.Keywords : Sidaguri (Sida rhombifolia L.), column chromatography, alkaloid
Antioxidant Activity Assay of Eucalyptus pellita Leaf Extract Sovia Lenny; Murni Suryani Lumbantoruan; Helmina Br. Sembiring
International Journal of Ecophysiology Vol. 5 No. 2 (2023): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v5i2.13715

Abstract

In pharmacy, eucalyptus leaves are used for various pharmacological activities because they contain phenolic compounds. This study aims to detect phytochemical compounds and test the antioxidant activity of Eucalyptus pellita leaf extract. The dry powder of E. pellita leaves (1900 g) was macerated first with methanol solvent. The concentrated methanol extract was then subjected to partition extraction with n - hexane solvent. The methanol layer was concentrated and then partitioned with ethyl acetate solvent. Methanol extract was obtained as much as 176.75 g (9,30%), n-hexane extract 13.77 g (0.72%), and ethyl acetate extract 27.93g (1.47%). The three extracts were subjected to phytochemical screening, methanol extract and ethyl acetate extract were positive for flavonoids. These three extracts did not contain alkaloids but were positive for tannins and saponins. Antioxidant activity was tested using the DPPH (1,1 diphenyl-2-picrylhydrazyl) method with UV-vis spectrophotometer (max wavelength 517 nm). Sample concentration variations were 12.5; 25; 50; 100; and 200 ppm. Ethyl acetate extract, methanol extract and n - hexane extract have antioxidant activity with IC50 values of 6.811; 17.923; and 31.109 µg/mL, respectively. This shows that E. pellita leaf extract has very strong antioxidant activity and ethyl acetate extract has more antioxidant activity.
ANALYSIS OF TOTAL FLAVONOID CONTENT AND ANTIOXIDANT ACTIVITY ASSAY OF GUAVA VARIETY CRYSTAL (Psidium guajava L.) LEAVES EXTRACT Tarigan, Dewi Br; Lenny, Sovia; Zuhra, Cut Fatimah
Jurnal Kimia Riset Vol. 9 No. 1 (2024): June
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i1.57803

Abstract

The study investigates the antioxidant activity and total flavonoid compounds in leaves crystal guava, a plant rich in vitamin C and high in antioxidant activity. The research involved maceration extraction of leaves cystal guava using methanol solvent, then fractionation with ethyl acetate and n-hexane solvents in stages to obtain extracts methanol, ethyl acetat and n-hexane; thereafter extracts were subjected to phytochemical screening, total flavonoid content determination, and antioxidant activity using the DPPH method. The study found secondary metabolite compounds which is found in leaves crystal guava such as flavonoids, alkaloids, steroids, terpenoids, saponins and tannins; that ethyl acetate extract had the highest flavonoid content of 171.91 mg/L and highest antioxidant activity with IC50 value of 9.59 ppm, followed by n-hexane and methanol extracts.
Potential Inhibitory Power of Edible Starch Phosphate Film of Yellow Ivory Coconut Shoots (Cocos nucifera var. eburnea) Incorporated with Chitosan-Nisin on The Growth of Patogenic Bacteria Kurniawan, Dimas Zuhri; Zuhra, Cut Fatimah; Lenny, Sovia
Journal of The Indonesian Society of Integrated Chemistry Vol. 16 No. 1 (2024): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v16i1.33691

Abstract

Edible film can be used to package food well and improve the condition of the food, but damage to food ingredients can also occur due to bacteria, so chitosan-nisin is added as an antibacterial agent. In this research, Edible Film was made by adding 1,2,3,4 g of nisin to a 1% (w/v) chitosan solution to obtain four antibacterial agent solutions, namely 1.0% chitosan and chitosan-nisin: 0.1; 0.2; 0.3 and 0.4% (w/v), then mixed with distilled water, phosphate starch of yellow ivory coconut shoots, and sorbitol, then stirred with a magnetic stirrer, molded and dried in an oven and then tested for the antibacterial properties of the Edible film. The research results showed that Edible Film containing chitosan-nisin solution was the most potent antibacterial in inhibiting 1% chitosan solution with 0.4% nisin with the inhibition zone for each bacterium ranging between 29.9 mm, 30.6 mm. and 28.2 mm. Antibacterial activity increased with increasing concentration of chitosan-nisin solution.
Antioxidants Activity of Face Toner from Ethyl Acetate Fraction of Okra Seeds Lubis, Fatmawati; Lenny, Sovia; Br. Sembiring, Helmina
Journal of The Indonesian Society of Integrated Chemistry Vol. 16 No. 2 (2024): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v16i2.37677

Abstract

The Implementation of Biofloc Systems in the Catfish Breeding Cooperated with Lele Tamora SME Zuhra, Cut Fatimah; Sovia, Sovia Lenny; Nunuk, Nunuk Priyani
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.858 KB) | DOI: 10.32734/abdimastalenta.v4i2.3551

Abstract

This community service aims to provide solutions for fisheries that experience water change problems caused by the lower availability of ground water. The small-medium enterprise (SME) Lele Tamora which is engaged in catfish breeding experiences this problem, such as turbid and bubbly water, which causes mass death of fish seedlings. Therefore, pond fish farming with a modern system integrated by a biofloc system that is supported by the use of microbubbles is introduced to the owner. The basic principle of this system is to utilize bacteria that can release substances that function as adhesives to form biofloc, such as microalgae aggregates, residual pellets, exoskeletons of dead organisms, bacteria, protists, protozoa and others substance with 0.1-2 mm diameter. All of these aggregates can be a source of poison in the pond system or as a competitor for fish to get oxygen. The biofloc system is projected to be able in reducing the toxic content in pond water which automatically reduces fish mortality, and this system can also convert organic waste in ponds into natural food as well as reducing commercial feed. For this purpose, a 1000 liter volume of bioreactor has been constructed to grow biofloc bacterial seeds, 20-liter-capacity of autoclaves to sterilize dissolved oxygen while helping to breed floc-forming aerobic bacteria. This system has been implemented at Lele Tamora SME, and the results showed the changing of water-pond colour from green to brown. Meanwhile, the netting ratio (selection of catfish based on the size of ready-to-sell) increased from 4000 to 8000 individuals.
Co-Authors Adiansyah Adiansyah ADRIAN HARTANTO Alyssa Zahra Br Karo Andriayani ANISA LUTFIA Astuti Aththorick, T. Alief Cut Fatimah Zuhra DITA ISNAINI RAMBE Evi Yoana S Febriyanti Br Surbakti Hafizhah Az-Zahra Harry Agusnar ISNAINI NURWAHYUNI Juliati Br Tarigan Kurniawan, Dimas Zuhri Lamek Marpaung Lamek Marpaung, Lamek Lamhot Parulian Manalu LISTRA SARIMUNGGU Liver Zai Lua Shun Kuang Lubis, Fatmawati Marpongahtun Marpongahtun MEYLISA PURBA MUHAMMAD TAUFIK Murni Suryani Lumbantoruan Nunuk, Nunuk Priyani Pasaribu, Albert Pasaribu, Khatarina Meldawati Piliang, Averrous Fazlurrahman Ronn Goei Saharman Gea Sembiring, Helmina Br. Sihombing, Debynati Simamora, Monojaya Simangunsong, Siska NA Sinaga, M. Zulham Efendi Sinta Artavia Waruwu SUHARMAN Tamrin Tamrin Tarigan, Dewi Br Tonel Barus Vivi Purwandari Yuan Alfinsyah Sihombing YURNALIZA YURNALIZA Zaidar, Emma