Hardy Shuwanto, Jenni Lie, H. Abdullah, S. P. Pasaribu
In this study, Fe-doped Zn(O,S) has been successfully fabricated by a one-step preparation process using chemical wet method. The Fe-doped Zn(O,S) photocatalysts were studied by varying the content of Fe dopant. The characterizations of Fe-doped Zn(O,S) were carried out by SEM and XRD analyses to determine the morphology and phase of samples. Furthermore, the optical and electrochemical properties were characterized through EIS, TPC, DRS and PL analyses. Briefly, Zn(O,S) with 5% Fe amount exhibited the most optimum condition as compared to other Fe amounts in which it showed better charge separation with the hydrogen evolution amount of 29000 mikromol/g in 10% EtOH solution. Lastly, the proposed mechanism is initially by the trapping of water molecules in the oxygen vacancy (defect) in Fe-Zn(O,S) sample followed by the reduction to generate hydrogen (H2) gas via the intermediate of proton (H+).
{"title":"PREPARATION OF FE-DOPED ZINC OXYSULFIDE (Fe-Zn(O,S)) WITH SURFACE DEFECT FOR HYDROGEN EVOLUTION REACTION","authors":"Hardy Shuwanto, Jenni Lie, H. Abdullah, S. P. Pasaribu","doi":"10.30872/jkm.v20i2.1108","DOIUrl":"https://doi.org/10.30872/jkm.v20i2.1108","url":null,"abstract":"In this study, Fe-doped Zn(O,S) has been successfully fabricated by a one-step preparation process using chemical wet method. The Fe-doped Zn(O,S) photocatalysts were studied by varying the content of Fe dopant. The characterizations of Fe-doped Zn(O,S) were carried out by SEM and XRD analyses to determine the morphology and phase of samples. Furthermore, the optical and electrochemical properties were characterized through EIS, TPC, DRS and PL analyses. Briefly, Zn(O,S) with 5% Fe amount exhibited the most optimum condition as compared to other Fe amounts in which it showed better charge separation with the hydrogen evolution amount of 29000 mikromol/g in 10% EtOH solution. Lastly, the proposed mechanism is initially by the trapping of water molecules in the oxygen vacancy (defect) in Fe-Zn(O,S) sample followed by the reduction to generate hydrogen (H2) gas via the intermediate of proton (H+).","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45661430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prilla Amnestiya, Arief yandra Putra, Yelfira Sari
Indonesia adalah negara yang menyimpan kekayaan sumber daya hayati, terutama buah tropika. Tingginya keragaman tanaman buah di Indonesia menghasilkan berbagai manfaat untuk kesehatan, di antara lain sebagai antioksidan. Tidak hanya terdapat dibuah, kulit buah juga mengandung antioksidan untuk kesehatan. Manfaat antioksidan bagi tubuh di antaranya untuk melindungi sel-sel tubuh dari kerusakan yang diakibatkan oleh radikal bebas. Senyawa radikal bebas terdapat dalam lingkungan kehidupan sehari-hari manusia. Polusi udara merupakan salah satu contoh sumber radikal bebas. Sumber radikal bebas lainnya yaitu racun, paparan sinar matahari berlebih, asap rokok, makanan yang digoreng, dan obat-obat tertentu. Tujuan dari literature review ini adalah untuk mengetahui metabolit sekunder dan aktivitas antioksidan yang terdapat pada limbah kulit buah sebagai mengakal radikal bebas. Metode yang digunakan dalam karya tulis ini penelusuran pustaka melalui database Google dan Google Scholar dengan menggunakan keyword. Jurnal yang telah ditemukan dilakukan screening dengan kriteria inklusi dan eksklusi. Berdasarkan hasil dari berbagai penelusuran yang dicantumkan dalam artikel menunjukkan aktivitas antioksidan yang tinggi terdapat pada limbah kulit buag naga yaitu nilai IC50 adalah 2,69 ppm.
{"title":"IDENTIFIKASI SENYAWA METABOLIT SEKUNDER DAN UJI AKTIVITAS ANTIOKSIDAN PADA LIMBAH KULIT BUAH","authors":"Prilla Amnestiya, Arief yandra Putra, Yelfira Sari","doi":"10.30872/jkm.v20i2.1129","DOIUrl":"https://doi.org/10.30872/jkm.v20i2.1129","url":null,"abstract":"Indonesia adalah negara yang menyimpan kekayaan sumber daya hayati, terutama buah tropika. Tingginya keragaman tanaman buah di Indonesia menghasilkan berbagai manfaat untuk kesehatan, di antara lain sebagai antioksidan. Tidak hanya terdapat dibuah, kulit buah juga mengandung antioksidan untuk kesehatan. Manfaat antioksidan bagi tubuh di antaranya untuk melindungi sel-sel tubuh dari kerusakan yang diakibatkan oleh radikal bebas. Senyawa radikal bebas terdapat dalam lingkungan kehidupan sehari-hari manusia. Polusi udara merupakan salah satu contoh sumber radikal bebas. Sumber radikal bebas lainnya yaitu racun, paparan sinar matahari berlebih, asap rokok, makanan yang digoreng, dan obat-obat tertentu. Tujuan dari literature review ini adalah untuk mengetahui metabolit sekunder dan aktivitas antioksidan yang terdapat pada limbah kulit buah sebagai mengakal radikal bebas. Metode yang digunakan dalam karya tulis ini penelusuran pustaka melalui database Google dan Google Scholar dengan menggunakan keyword. Jurnal yang telah ditemukan dilakukan screening dengan kriteria inklusi dan eksklusi. Berdasarkan hasil dari berbagai penelusuran yang dicantumkan dalam artikel menunjukkan aktivitas antioksidan yang tinggi terdapat pada limbah kulit buag naga yaitu nilai IC50 adalah 2,69 ppm.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48911097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bacterial cellulose (BC) is utilized in numerous industries, including the cosmetic, biomedical, and packaging industries. Nonetheless, BC lacks antibacterial activity and must be combined with antimicrobial agents, including plant extracts. This review aims to give information on the antibacterial activity of BC that has been modified by the addition of plant extracts. The method used in this study is article review. Articles were selected from Q1-Q3 category international journals published within the recent decade. Based on the results, extracts of rhizomes, ethanol extracts of gwarri stems and leaves, oregano leaves, rosemary leaves, lovage leaves, parsley leaves, green tea leaves, rosella petals, and red and pink variants of hibiscus flowers, bitter melon seeds, gletang leaves, arabica coffee, and andaliman fruit, temu Kunci dimethyl sulfoxide extract, mulberry leaf NaOH extract, pomegranate skin water extract, and rosemary leaves have been used to modify BC. Antimicrobial activity showed the most significant increase in BC-modified ethanol extract of rosella petals at a concentration of 500 ppm with an OD600 of 0% against Pseudomonas aeruginosa. FTIR and SEM investigations of pure BC and BC modified with plant extracts revealed variations in functional group content and three-dimensional fibrillar network structure.
{"title":"ANTIMICROBIAL ACTIVITY OF BACTERIAL CELLULOSE MODIFIED WITH PLANT EXTRACTS","authors":"Riza Apriani, Nina Utami","doi":"10.30872/jkm.v20i2.1203","DOIUrl":"https://doi.org/10.30872/jkm.v20i2.1203","url":null,"abstract":"Bacterial cellulose (BC) is utilized in numerous industries, including the cosmetic, biomedical, and packaging industries. Nonetheless, BC lacks antibacterial activity and must be combined with antimicrobial agents, including plant extracts. This review aims to give information on the antibacterial activity of BC that has been modified by the addition of plant extracts. The method used in this study is article review. Articles were selected from Q1-Q3 category international journals published within the recent decade. Based on the results, extracts of rhizomes, ethanol extracts of gwarri stems and leaves, oregano leaves, rosemary leaves, lovage leaves, parsley leaves, green tea leaves, rosella petals, and red and pink variants of hibiscus flowers, bitter melon seeds, gletang leaves, arabica coffee, and andaliman fruit, temu Kunci dimethyl sulfoxide extract, mulberry leaf NaOH extract, pomegranate skin water extract, and rosemary leaves have been used to modify BC. Antimicrobial activity showed the most significant increase in BC-modified ethanol extract of rosella petals at a concentration of 500 ppm with an OD600 of 0% against Pseudomonas aeruginosa. FTIR and SEM investigations of pure BC and BC modified with plant extracts revealed variations in functional group content and three-dimensional fibrillar network structure.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134921835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Saputri, Muhammad Fadjar Aldin, T. S. Tjahjandarie, E. Marliana, M. Tanjung
Dua senyawa turunan pterokarpan, variabilin (1), and medikarpin (2) telah diisolasi dari kulit batang Spatholobus ferrugineus. Penentuan struktur kedua senyawa pterokarpan ditetapkan berdasarkan analisis spektrum UV, IR, 1D dan 2D NMR. Uji aktivitas antikanker senyawa 1–2 terhadap sel kanker payudara MCF-7 memperlihatkan nilai IC50 2,73 dan 14,36 µg/ml. Kata kunci : Spatholobus ferrugineus, pterokarpan, antikanker, sel MCF-7.
{"title":"SENYAWA SENYAWA PTEROKARPAN DARI KULIT BATANG Spatholobus ferrugineus","authors":"R. Saputri, Muhammad Fadjar Aldin, T. S. Tjahjandarie, E. Marliana, M. Tanjung","doi":"10.30872/jkm.v20i2.920","DOIUrl":"https://doi.org/10.30872/jkm.v20i2.920","url":null,"abstract":"Dua senyawa turunan pterokarpan, variabilin (1), and medikarpin (2) telah diisolasi dari kulit batang Spatholobus ferrugineus. Penentuan struktur kedua senyawa pterokarpan ditetapkan berdasarkan analisis spektrum UV, IR, 1D dan 2D NMR. Uji aktivitas antikanker senyawa 1–2 terhadap sel kanker payudara MCF-7 memperlihatkan nilai IC50 2,73 dan 14,36 µg/ml. \u0000Kata kunci : Spatholobus ferrugineus, pterokarpan, antikanker, sel MCF-7.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43316898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fiqi Estuning Nava Maulida, A. Alimuddin, Erwin Erwin
Research on the extraction and characterization of pectin from lemon lime peel waste (Citrus amblycarpa) has been done. The purpose of this research is to process lime waste into raw material of pectin source, to know pectin quality of extract obtained, and characterization pectin using FTIR spectrum. To obtain the results of research conducted several stages of research are pectin extraction, pectin precipitation, pectin washing, pectin drying and continued with the characterization of pectin which includes determination of moisture content, ash content, equivalent weight, methoxyl content, galakturonat level, esterification degree and spectrum analysis FTIR to determine the absorption of pectin functional groups obtained. The results showed that the yield% was 11.72%, the water content was 11.40%, the ash content was 1.34%, the weight of the equivalent was 871.5, the metoxyl content was 5.66, the galactonate level was 64.48 %, degree of esterification equal to 49,84% and FTIR analysis result which have conformity with standard pectin group that has OH, CH aliphatic, C = O, CH3 and CO group (secondary alcohol, carboxylic, ester, ether).
{"title":"EXTRACTION EXTRACTION AND CHARACTERIZATION OF PECTIN FROM LEMON LIME PEEL WASTE (Citrus amblycarpa)","authors":"Fiqi Estuning Nava Maulida, A. Alimuddin, Erwin Erwin","doi":"10.30872/jkm.v20i2.527","DOIUrl":"https://doi.org/10.30872/jkm.v20i2.527","url":null,"abstract":"Research on the extraction and characterization of pectin from lemon lime peel waste (Citrus amblycarpa) has been done. The purpose of this research is to process lime waste into raw material of pectin source, to know pectin quality of extract obtained, and characterization pectin using FTIR spectrum. To obtain the results of research conducted several stages of research are pectin extraction, pectin precipitation, pectin washing, pectin drying and continued with the characterization of pectin which includes determination of moisture content, ash content, equivalent weight, methoxyl content, galakturonat level, esterification degree and spectrum analysis FTIR to determine the absorption of pectin functional groups obtained. The results showed that the yield% was 11.72%, the water content was 11.40%, the ash content was 1.34%, the weight of the equivalent was 871.5, the metoxyl content was 5.66, the galactonate level was 64.48 %, degree of esterification equal to 49,84% and FTIR analysis result which have conformity with standard pectin group that has OH, CH aliphatic, C = O, CH3 and CO group (secondary alcohol, carboxylic, ester, ether).","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43206494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Resistance to temephos as a larvicide of A. aegyptimosquitoes has occurred in Indonesia. Therefore, it is necessary to look for other active compounds that can act as larvicides, but also environmentally friendly. This study used leaf and roots extract of T. erectahexane and acetone fraction as larvicide. The process begins with drying followed by extracting samples (leaves and roots of T. erecta) each with hexane and acetone solvents. Test solutions were made with a concentration of 0, 0.0075, 0.015, 0.03, and 0.1% (w/v) of the extract produced. Larvicide test was carried out referring to WHOPES by observing the mortality of instar larvae 3 and 4 in each extract. The results obtained showed the mortality percentage of larvae increased with increasing concentration and exposure time in both types of larvae. The lowest LC 50 was obtained from the root extract of hexane fraction (37 ppm) for 3rd instar larvae and acetone fraction (61 ppm) for instar 4 larvae. Keywords: Larvae, A. aegypti, T. erecta. Fraction
{"title":"LARVICIDE EFFECT OF TAGETES ERECTA EXTRACT HEXANE AND ACETONE FRACTION ON INSTAR 3 AND 4 AEDES AEGYPTI MOSQUITO LARVAE","authors":"N. R. Aminu, H. Soetjipto, A. I. Kristijanto","doi":"10.30872/jkm.v20i2.772","DOIUrl":"https://doi.org/10.30872/jkm.v20i2.772","url":null,"abstract":"Resistance to temephos as a larvicide of A. aegyptimosquitoes has occurred in Indonesia. Therefore, it is necessary to look for other active compounds that can act as larvicides, but also environmentally friendly. This study used leaf and roots extract of T. erectahexane and acetone fraction as larvicide. The process begins with drying followed by extracting samples (leaves and roots of T. erecta) each with hexane and acetone solvents. Test solutions were made with a concentration of 0, 0.0075, 0.015, 0.03, and 0.1% (w/v) of the extract produced. Larvicide test was carried out referring to WHOPES by observing the mortality of instar larvae 3 and 4 in each extract. The results obtained showed the mortality percentage of larvae increased with increasing concentration and exposure time in both types of larvae. The lowest LC 50 was obtained from the root extract of hexane fraction (37 ppm) for 3rd instar larvae and acetone fraction (61 ppm) for instar 4 larvae. \u0000Keywords: Larvae, A. aegypti, T. erecta. Fraction","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47725580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daruju (Acanthus ilicifolius Linn) contain flavonoids, terpenoids, steroids, saponins, alkaloids and tannins that can be used as antifeedant compounds. The purpose of this study is to identify the active compound antifeedant from daruju leaves against the eggplant leaf beetle (Epilachna sparsa). The antifeedant activity test was carried out on the methanol extract, the partitioned fraction and the isolate. This study was began by maceration of daruju leaf powder (1000 g) with methanol that obtained methanol extract of 130.3 g. The methanol extracts were then separated by partitioning that obtained n-hexane, dichloromethane, ethyl acetate and methanol fraction. Antifeedant activity test against eggplant leaf beetle (Epilachna sparsa) showed the dichlormethane fraction at a concentration of 6 ppm had the best activity compared to other fractions with an activity of 90.62%. Separation and purification of the dichloromethane fraction to obtain isolation was carried out by column chromatography. The isolate showed 96.1% antifeedant activity at a concentration of 6 ppm. Based on 1H-NMR spectrum showed isolate is p-Oxy-2-ethylhexyl benzaldehyde.
{"title":"Antifeedaant Compound From Daruju Leaves (Acanthus Ilicifolius Linn) Against Eggplant Leaves Beetle (Epilachna Sparsa)","authors":"Ade Mariadi, Ari Widiyantoro, Endah Sayekti","doi":"10.30872/jkm.v20i1.1127","DOIUrl":"https://doi.org/10.30872/jkm.v20i1.1127","url":null,"abstract":"Daruju (Acanthus ilicifolius Linn) contain flavonoids, terpenoids, steroids, saponins, alkaloids and tannins that can be used as antifeedant compounds. The purpose of this study is to identify the active compound antifeedant from daruju leaves against the eggplant leaf beetle (Epilachna sparsa). The antifeedant activity test was carried out on the methanol extract, the partitioned fraction and the isolate. This study was began by maceration of daruju leaf powder (1000 g) with methanol that obtained methanol extract of 130.3 g. The methanol extracts were then separated by partitioning that obtained n-hexane, dichloromethane, ethyl acetate and methanol fraction. Antifeedant activity test against eggplant leaf beetle (Epilachna sparsa) showed the dichlormethane fraction at a concentration of 6 ppm had the best activity compared to other fractions with an activity of 90.62%. Separation and purification of the dichloromethane fraction to obtain isolation was carried out by column chromatography. The isolate showed 96.1% antifeedant activity at a concentration of 6 ppm. Based on 1H-NMR spectrum showed isolate is p-Oxy-2-ethylhexyl benzaldehyde.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41963742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Salah satu penyebab timbulnya jerawat yaitu adanya infeksi bakteri Propionibacterium acnes. Infeksi bakteri penyabab jerawat dapat diatasi menggunakan antibakteri. Pemanfaatan bakteri endofit adalah cara lain untuk mendapatkan metabolit sekunder selain menggunakan ekstrak tanaman. Bakteri endofit adalah bakteri yang hidup di dalam jaringan tanaman dan menghasilkan senyawa bioaktif yang sama dengan tanaman inangnya. Penelitian ini bertujuan untuk mengisolasi bakteri endofit daun hijau dari tanaman pucuk merah dan memanfaatkan senyawa metabolit sekundernya sebagai antibakteri. Pada penelitian ini dilakukan uji aktivitas antibakteri menggunakan metode difusi sumuran terhadap bakteri Propionibacterium acnes KCCM 41747. Hasil penelitian diperoleh sebanyak 30 isolat bakteri endofit hasil isolasi berpotensi sebagai antibakteri terhadap Propionibacterium acnes. Aktivitas antibakteri tertinggi terdapat pada kode koloni P27 dengan diameter zona bening sebesar 23,17 mm. Berdasarkan hasil uji aktivitas antibakteri dapat disimpulkan bahwa bakteri endofit daun hijau dari tanaman pucuk merah berpotensi sebagai antibakteri terhadap bakteri Propionibacterium acnes KCCM 41747.
{"title":"Potensi Bakteri Endofit Daun Pucuk Merah (Syzygium Myrtifolium Walp.) Sebagai Antibakteri Terhadap Propionibacterium Acnes","authors":"Wihda Nisa Alhayyu, W. Astuti, E. Marliana","doi":"10.30872/jkm.v20i1.1015","DOIUrl":"https://doi.org/10.30872/jkm.v20i1.1015","url":null,"abstract":"Salah satu penyebab timbulnya jerawat yaitu adanya infeksi bakteri Propionibacterium acnes. Infeksi bakteri penyabab jerawat dapat diatasi menggunakan antibakteri. Pemanfaatan bakteri endofit adalah cara lain untuk mendapatkan metabolit sekunder selain menggunakan ekstrak tanaman. Bakteri endofit adalah bakteri yang hidup di dalam jaringan tanaman dan menghasilkan senyawa bioaktif yang sama dengan tanaman inangnya. Penelitian ini bertujuan untuk mengisolasi bakteri endofit daun hijau dari tanaman pucuk merah dan memanfaatkan senyawa metabolit sekundernya sebagai antibakteri. Pada penelitian ini dilakukan uji aktivitas antibakteri menggunakan metode difusi sumuran terhadap bakteri Propionibacterium acnes KCCM 41747. Hasil penelitian diperoleh sebanyak 30 isolat bakteri endofit hasil isolasi berpotensi sebagai antibakteri terhadap Propionibacterium acnes. Aktivitas antibakteri tertinggi terdapat pada kode koloni P27 dengan diameter zona bening sebesar 23,17 mm. Berdasarkan hasil uji aktivitas antibakteri dapat disimpulkan bahwa bakteri endofit daun hijau dari tanaman pucuk merah berpotensi sebagai antibakteri terhadap bakteri Propionibacterium acnes KCCM 41747.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43661603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bioetanol merupakan etanol atau senyawa alkohol yang diperoleh melalui proses fermentasi biomassa dengan bantuan mikroorganisme yang bisa digunakan sebagai bahan bakar alternatif, minyak bumi dan energi lain yang berasal dari fosil. Sumber energi tersebut semakin menipis jika tidak ditemukan energi cadangan/alternatif. Untuk mengantisipasi sumber energi nasional yang semakin menipis, maka diperlukan energi terbarukan. Beberapa peneliti menemukan bahwa banyak limbah yang digunakan sebagai bahan bakar alternatif. Salah satu untuk menghasilkan bioetanol yang berkualitas sebagai pengganti energi alternatif adalah memiliki kadar bioetanol yang sesuai dengan Standar Nasional Indonesia serta syarat kualitasnya. Tujuan dari literature review ini adalah untuk mengetahui nilai kadar bioetanol dari setiap jenis limbah dengan berbagai macam tahapan yang digunakan. Metode yang digunakan dalam karya tulis ilmiah ini adalah penelusuran pustaka melalui database Google, Google Scholar serta Science Direct dengan menggunakan keyword. Jurnal yang telah ditemukan dilakukan screening dengan kriteria inklusi dan eksklusi. Berdasarkan hasil dari berbagai penelusuran yang dicantumkan dalam artikel ini didapatkan bahwa kadar bioetanol yang terbaik yaitu pada produksi bioetanol dari limbah tepung tapioka melalui penambahan starter dan lama fermentasi. Kadar bioetanol yang dihasilkan sebesar 92% dengan lama fermentasi 7 hari. Bioetanol ini diperoleh melalui proses Sakarifikasi, hidrolisis, Fermentasi, serta distilasi. Setelah melewati hari ke-7 fermentasi.
{"title":"Pemanfaatan Berbagai Macam Limbah Menjadi Bioetanol Sebagai Bahan Bakar Alternatif","authors":"D. Novelia, Arief yandra Putra, Yelfira Sari","doi":"10.30872/jkm.v20i1.1130","DOIUrl":"https://doi.org/10.30872/jkm.v20i1.1130","url":null,"abstract":"Bioetanol merupakan etanol atau senyawa alkohol yang diperoleh melalui proses fermentasi biomassa dengan bantuan mikroorganisme yang bisa digunakan sebagai bahan bakar alternatif, minyak bumi dan energi lain yang berasal dari fosil. Sumber energi tersebut semakin menipis jika tidak ditemukan energi cadangan/alternatif. Untuk mengantisipasi sumber energi nasional yang semakin menipis, maka diperlukan energi terbarukan. Beberapa peneliti menemukan bahwa banyak limbah yang digunakan sebagai bahan bakar alternatif. Salah satu untuk menghasilkan bioetanol yang berkualitas sebagai pengganti energi alternatif adalah memiliki kadar bioetanol yang sesuai dengan Standar Nasional Indonesia serta syarat kualitasnya. Tujuan dari literature review ini adalah untuk mengetahui nilai kadar bioetanol dari setiap jenis limbah dengan berbagai macam tahapan yang digunakan. Metode yang digunakan dalam karya tulis ilmiah ini adalah penelusuran pustaka melalui database Google, Google Scholar serta Science Direct dengan menggunakan keyword. Jurnal yang telah ditemukan dilakukan screening dengan kriteria inklusi dan eksklusi. Berdasarkan hasil dari berbagai penelusuran yang dicantumkan dalam artikel ini didapatkan bahwa kadar bioetanol yang terbaik yaitu pada produksi bioetanol dari limbah tepung tapioka melalui penambahan starter dan lama fermentasi. Kadar bioetanol yang dihasilkan sebesar 92% dengan lama fermentasi 7 hari. Bioetanol ini diperoleh melalui proses Sakarifikasi, hidrolisis, Fermentasi, serta distilasi. Setelah melewati hari ke-7 fermentasi.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46035301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marwati Marwati, Y. Putra, Aswita Emmawati, Maghfirotin Marta Banin, Y. Prayitno, Hamka Hamka
Soyghurt adalah merupakan salah satu produk fermentasi yang diolah dari susu kedelai dengan menambahkan kultur bakteri Lactobacillus bulgaricus dan Streptococcus thermophilus. Soyghurt dengan penambahan buah nanas madu dapat meningkatkan nilai fungsionalnya, namun perlu formulasi yang tepat agar didapatkan soyghurt nanas madu dengan nilai fungsional dan sensoris terbaik. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktor tunggal dengan lima taraf dan diulang tiga kali. Faktor tersebut adalah persentase perbandingan nanas madu dan susu kedelai yaitu (30:70), (40:60), (50:50), (60:40) dan (70:30). Parameter yang diamati adalah kadar vitamin C, pH, total bakteri asam laktat dan sifat sensoris (hedonik dan mutu hedonik). Hasil penelitian menunjuukan bahwa perlakuan nanas madu dan susu (70:30) memiliki kandungan vitamin C 50,75 mg/100 g, pH 4,48, total BAL log 7,57 cfu/g dan disukai oleh panelis pada uji hedonik. Sedangkan pada karakteriktik mutu hedonik pada perlakuan 70:30 memberikan warna kuning, beraroma nanas dan agak beraroma susu kedelai, tekstur kental, dan berasa asam, namun tidak berbeda nyata dengan perlakuan yang lain.
{"title":"Penentuan Vitamin C, pH , Total Bakteri Asam Laktat (BAL) dan Respon Sensoris pada Soyghurt dari Nanas Madu (Ananas comosus L.)","authors":"Marwati Marwati, Y. Putra, Aswita Emmawati, Maghfirotin Marta Banin, Y. Prayitno, Hamka Hamka","doi":"10.30872/jkm.v20i1.1126","DOIUrl":"https://doi.org/10.30872/jkm.v20i1.1126","url":null,"abstract":"Soyghurt adalah merupakan salah satu produk fermentasi yang diolah dari susu kedelai dengan menambahkan kultur bakteri Lactobacillus bulgaricus dan Streptococcus thermophilus. Soyghurt dengan penambahan buah nanas madu dapat meningkatkan nilai fungsionalnya, namun perlu formulasi yang tepat agar didapatkan soyghurt nanas madu dengan nilai fungsional dan sensoris terbaik. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktor tunggal dengan lima taraf dan diulang tiga kali. Faktor tersebut adalah persentase perbandingan nanas madu dan susu kedelai yaitu (30:70), (40:60), (50:50), (60:40) dan (70:30). Parameter yang diamati adalah kadar vitamin C, pH, total bakteri asam laktat dan sifat sensoris (hedonik dan mutu hedonik). Hasil penelitian menunjuukan bahwa perlakuan nanas madu dan susu (70:30) memiliki kandungan vitamin C 50,75 mg/100 g, pH 4,48, total BAL log 7,57 cfu/g dan disukai oleh panelis pada uji hedonik. Sedangkan pada karakteriktik mutu hedonik pada perlakuan 70:30 memberikan warna kuning, beraroma nanas dan agak beraroma susu kedelai, tekstur kental, dan berasa asam, namun tidak berbeda nyata dengan perlakuan yang lain.","PeriodicalId":31725,"journal":{"name":"Jurnal Kimia Mulawarman","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45950214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：