IJCA (Indonesian Journal of Chemical Analysis)最新文献_第3页

Potential of Bacillus sp. from Kebun Raya Liwa as a Producer of Indole Acetic Acid (IAA) Hormone Kebun Raya Liwa芽孢杆菌生产吲哚乙酸(IAA)激素的潜力

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art2

Fadlina Athfin, Kusuma Handayani, W. Setiawan, C. N. Ekowati

{"title":"Potential of Bacillus sp. from Kebun Raya Liwa as a Producer of Indole Acetic Acid (IAA) Hormone","authors":"Fadlina Athfin, Kusuma Handayani, W. Setiawan, C. N. Ekowati","doi":"10.20885/ijca.vol6.iss1.art2","DOIUrl":"https://doi.org/10.20885/ijca.vol6.iss1.art2","url":null,"abstract":"Kebun Raya Liwa’s soil has the potential to allow for a population of microorganisms such as the Bacillus sp. Bacillus sp. Kebun Raya Liwa are known to produce phytohormones that have the potential to help plant growth and development, one of which is the hormone Indole Acetic Acid (IAA). This study aims to determine the potential of Bacillus sp. from the soil of Kebun Rawa Liwa in producing IAA hormones. The research method included taking soil samples, preparing Nutrient Agar (NA) medium, measuring soil pH samples, isolating soil bacteria, purifying and characterizing Bacillus sp., preparing IAA standard curves, and testing the potency of Bacillus sp. IAA production was carried out in two ways, namely measuring the content of IAA with the addition of tryptophan and without the addition of tryptophan. IAA concentration was measured using a spectrophotometer with a wavelength of 520 nm. The data obtained is presented in tabular form. The isolation results obtained 10 isolates that were able to produce IAA hormone with and without tryptophan. The highest IAA production without tryptophan was isolate BP 5 with a concentration of 1.18 ppm, and the isolate that was able to produce the highest IAA with tryptophan was isolate BP 13 with a concentration of 3.90 ppm. This indicates that the isolate Bacillus sp. from the soil rhizosphere Kebun Raya Liwa can produce IAA hormones.","PeriodicalId":215410,"journal":{"name":"IJCA (Indonesian Journal of Chemical Analysis)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124728148","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}

引用次数: 0

Antioxidant Test and Flavonoids Determination of Tuber Pakis Kinca (Nephrolepis cordifolia (L) C. Presl) 金莲块茎(Nephrolepis cordifolia (L) C. Presl)抗氧化试验及总黄酮含量测定

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art1

S. Hadi, A. Subekti, Amalia Khairunnisa

{"title":"Antioxidant Test and Flavonoids Determination of Tuber Pakis Kinca (Nephrolepis cordifolia (L) C. Presl)","authors":"S. Hadi, A. Subekti, Amalia Khairunnisa","doi":"10.20885/ijca.vol6.iss1.art1","DOIUrl":"https://doi.org/10.20885/ijca.vol6.iss1.art1","url":null,"abstract":"One of the things that causes cell damage in the body is the formation of unpaired electrons, also known as free radicals, which can cause oxidative stress. Excessive oxidative stress is not maintained by the body's natural antioxidants, so natural antioxidants are needed from outside. One of the plants suspected of having antioxidant abilities is Pakis kinca. So, the aim of this study was to determine the levels of flavonoids and antioxidant abilities in the tuber of N. cordifoli. Therefore, the method used to determine flavonoids is by reacting with AlCl3 and reading by UV-vis spectrophotometry, while reacting antioxidants with DPPH using spectrophotometry. The results of the flavonoid test were 3.119 ± 0.09 w/w equivalent to quercetin, from this equation the flavonoid content in the range of the equation was obtained. The results of the antioxidant test obtained the mean value of antioxidants was 93.898 ± 0.923. The conclusion obtained is that the antioxidant IC50 value of tuber extract N. cordifolia is a strong category with a total flavonoid content of 3.119 ± 0.091 w/w equivalent to quercetin.","PeriodicalId":215410,"journal":{"name":"IJCA (Indonesian Journal of Chemical Analysis)","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116526889","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}

引用次数: 0

Glass tube-coated TiO2 nanostructure for degradation of methylene blue: an experimental and design of column photocatalytic reactor 玻璃管包覆TiO2纳米结构降解亚甲基蓝:柱式光催化反应器的实验与设计

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art6

R. Hidayat, G. Fadillah, S. Ohira

引用次数: 1

Characterization of Zeolite ZSM-5 Synthesized from Kaolin and TPABr Using X-Ray Diffraction and Infrared Spectroscopy 高岭土与TPABr合成ZSM-5沸石的x射线衍射和红外光谱表征

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art5

A. Hamid, aizatur Rohmah, T. E. Purbaningtias, Mohammad Abdullah

{"title":"Characterization of Zeolite ZSM-5 Synthesized from Kaolin and TPABr Using X-Ray Diffraction and Infrared Spectroscopy","authors":"A. Hamid, aizatur Rohmah, T. E. Purbaningtias, Mohammad Abdullah","doi":"10.20885/ijca.vol6.iss1.art5","DOIUrl":"https://doi.org/10.20885/ijca.vol6.iss1.art5","url":null,"abstract":"Kaolin with alumina and silica content is used as the main material in this research to study the synthesis of ZSM-5 zeolite. The hydrothermal process was carried out through different aging times, namely 12, 24 and 36 hours. Tetrapropyl ammonium bromide (TPABr) was used as a template for the Mobile Five-1 (MFI) structure guide. X-ray diffraction (XRD) and infrared spectroscopy (FTIR) instruments were used to characterize the ZSM-5 zeolite formed from the synthesis results. This was done to identify the phase change from kaolin to zeolite ZSM-5. The results of the analysis using XRD for all samples showed a characteristic peak of the ZSM-5 zeolite at 2θ around 7.88°; 8.72° ;23.09°; 23.84° and 24.32°. However, samples with an aging time of 12 hours also showed peaks at 2θ around 15.84° and 26.03° which indicated an analsim phase. The absorption bands from the FTIR characterization for all samples are seen at wave numbers around 453, 542, 793, 1088 and 1221 cm−1 which are the characteristic peak points of ZSM-5 zeolite. The longer the aging time indicates that the crystallinity of the ZSM-5 zeolite is increasing. The highest crystallinity was obtained from ZSM-5 zeolite samples which were aged for 36 hours. This indicates an increasing number of ZSM-5 crystal nuclei with high purity because there is no other phase besides the ZSM-5 phase.","PeriodicalId":215410,"journal":{"name":"IJCA (Indonesian Journal of Chemical Analysis)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117136691","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}

引用次数: 0

Synthesis of Ni doped-TiO2 Thin Film Photocatalysts on Glass Surfaces 玻璃表面Ni掺杂tio2薄膜光催化剂的合成

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art9

Margareta Caroline Harunrasjid, A. B. Aritonang, M. A. Wibowo, P. Ardiningsih, Adhitiyawarman Adhitiyawarman

{"title":"Synthesis of Ni doped-TiO2 Thin Film Photocatalysts on Glass Surfaces","authors":"Margareta Caroline Harunrasjid, A. B. Aritonang, M. A. Wibowo, P. Ardiningsih, Adhitiyawarman Adhitiyawarman","doi":"10.20885/ijca.vol6.iss1.art9","DOIUrl":"https://doi.org/10.20885/ijca.vol6.iss1.art9","url":null,"abstract":"Thin film of TiO2 modified Ni2+ cationic (Ni doped-TiO2) thin films were synthesized from titanium tetraisopropoxide (TTIP) and Ni(NO3)2.6H2O using the combined sol-gel and dip coating method followed by calcination at 500oC for an hour. This study aims to determine the concentration of Ni2+ and the optimum number of layers for application as self-cleaning. Frontier transform infrared (FTIR) spectrophotometric analysis observed a shift in the vibration absorption peak of Ti-O towards a smaller wave number as an indication that the Ni2+ cationic have incorporated in the TiO2matrix in forming Ni-TiO2. Based on the of x-ray diffraction (XRD) it is known that Ni-TiO2 has anatase crystalline phase with a crystallite size of 149.20 nm. Diffuse reflectance ultraviolet-visible (DRSUV-Vis) spectrophotometry showed a decrease in the bandgap energy (3.2 eV to 2.22 eV). Surface morphological by scanning electron microscopy (SEM) method showed that the addition of polyethylene glycol (PEG) resulted in a more homogeneous distribution of particles than thin films without PEG. The self-cleaning activity of Ni-TiO2 was tested for surface hydrophilic properties by measuring the contact angle of water and oil droplets under visible light illumination.","PeriodicalId":215410,"journal":{"name":"IJCA (Indonesian Journal of Chemical Analysis)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127478398","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}

引用次数: 0

The Effect of Slip Polymer Additives on the Characteristics of Polyethylene Films 滑移聚合物添加剂对聚乙烯薄膜性能的影响

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art8

Putri Intan Puspa Ningrum, Ani Mulyasuryani, Rakhma Febriani

引用次数: 0

The Effect of Pineapple Leaf Fiber Addition to Mechanical and Thermal Characteristics of Sago Starch Based Biofoam with Thermopressing Method 菠萝叶纤维的加入对西米淀粉基生物泡沫热压法机械和热特性的影响

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2023-03-16 DOI: 10.20885/ijca.vol6.iss1.art4

R. Dewi, N. Sylvia, Z. Zulnazri, M. Riza

引用次数: 1

Perbandingan Detektor FID dan MS dalam Penentuan Sitronelal Minyak Atsiri Sereh Wangi

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2022-09-23 DOI: 10.20885/ijca.vol5.iss2.art4

Yorfan Ruwindya

引用次数: 1

Pengaruh Pelarut Terhadap Reaksi Penataan Ulang Claisen dan Siklisasi Senyawa Alil 1-Naftil Eter dengan Metode Microwave Assisted Organic Synthesis (MAOS) 溶剂对水听器和乙基化合物的再调节和调节作用与微波辅助有机物合成法(MAOS)的影响

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2022-09-23 DOI: 10.20885/ijca.vol5.iss2.art3

I. Pramesti, Yutaka Okada

{"title":"Pengaruh Pelarut Terhadap Reaksi Penataan Ulang Claisen dan Siklisasi Senyawa Alil 1-Naftil Eter dengan Metode Microwave Assisted Organic Synthesis (MAOS)","authors":"I. Pramesti, Yutaka Okada","doi":"10.20885/ijca.vol5.iss2.art3","DOIUrl":"https://doi.org/10.20885/ijca.vol5.iss2.art3","url":null,"abstract":"Reaksi penataan ulang Claisen merupakan salah satu reaksi penting untuk pembentukan ikatan baru karbon-karbon dalam sintesis organik. Secara umum, reaksi penataan ulang Claisen hanya dapat berlangsung dalam kondisi reaksi yang cukup ekstrim yaitu suhu yang tinggi 180-225oC dengan waktu yang lama. Dalam penelitian ini dilakukan sintesis alil 1-naftil eter terlebih dahulu melalui reaksi substitusi gugus alil pada senyawa 1-naftol dengan pemanasan pada suhu 58oC selama 8 jam. Produk reaksi alilasi dianalisis kemurniannya dengan menggunakan HPLC dan H-NMR. Selanjutnya, reaksi penataan ulang Claisen pada senyawa hasil sintesis alil 1-naftil eter berhasil dilakukan pada suhu reaksi yang rendah dan waktu yang singkat menggunakan metode Microwave Assisted Organic Synthesis(MAOS) dan katalis FeCl3. Karakterisasi menggunakan GC-MS menunjukkan senyawa yang terbentuk adalah 2-alil-1-naftol (produk penataan ulang Claisen), 2-metil-2,3-dihidronaftofuran (produk siklisasi) dan 1-naftol sebagai produk balik. Hasil penelitian menunjukkan bahwa reaksi penataan ulang Claisen dan siklisasi pada senyawa alil 1-naftil eter berlangsung optimum dengan menggunakan pelarut 1,2-dikloroetana pada suhu 80oC selama 20 menit dengan radiasi microwave.","PeriodicalId":215410,"journal":{"name":"IJCA (Indonesian Journal of Chemical Analysis)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115056867","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}

引用次数: 0

Material MOFs (Metal Organic Frameworks) dalam Aplikasi Fotokatalisis: Mini Review 材料MOFs(金属有机框架)dalam应用fotokatalis:迷你综述

IJCA (Indonesian Journal of Chemical Analysis) Pub Date : 2022-09-23 DOI: 10.20885/ijca.vol5.iss2.art7

R. Hidayat, A. Saputra, Murni Fitria

引用次数: 0