Pub Date : 2022-09-30DOI: 10.30598//ijcr.2022.10-nur
Nurani Hasanela, F. A. Souhoka
Physical and chemical factors influence antioxidant activity. One of the physical factors that can affect antioxidant activity is heat. This study aims to determine the phytochemical content and the effect of heating the crude extract of marine macroalgae Padina australis on antioxidant activity. The research method used, namely maceration using methanol as a solvent to obtain a crude extract, then evaporation of the solvent at a temperature of 45 °C. Furthermore, phytochemical tests were carried out, characterization using TLC and UV-Vis spectrophotometer, and determination of free radical scavenging activity of DPPH. The results of the phytochemical test showed that the crude extract of Padina australis was positive for bioactive compounds, namely saponins, alkaloids, terpenoids, steroids, and flavonoids. Characterization by TLC and UV-Vis spectrophotometer showed the presence of secondary metabolites, namely chlorophyll a and carotenoids. The use of temperature in the solvent evaporation process affects the stability of bioactive compounds and secondary metabolites. The results of the antioxidant activity test (IC50) of the crude extract of Padina australis against DPPH obtained 163 ppm, so it is classified as an antioxidant in the medium category.
{"title":"Effect of Heating Coarse Extract of Brown Macroalgae (Padina australis) from Tial Waters, Salahutu District, Central Maluku Regency on Antioxidant Activity","authors":"Nurani Hasanela, F. A. Souhoka","doi":"10.30598//ijcr.2022.10-nur","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-nur","url":null,"abstract":"Physical and chemical factors influence antioxidant activity. One of the physical factors that can affect antioxidant activity is heat. This study aims to determine the phytochemical content and the effect of heating the crude extract of marine macroalgae Padina australis on antioxidant activity. The research method used, namely maceration using methanol as a solvent to obtain a crude extract, then evaporation of the solvent at a temperature of 45 °C. Furthermore, phytochemical tests were carried out, characterization using TLC and UV-Vis spectrophotometer, and determination of free radical scavenging activity of DPPH. The results of the phytochemical test showed that the crude extract of Padina australis was positive for bioactive compounds, namely saponins, alkaloids, terpenoids, steroids, and flavonoids. Characterization by TLC and UV-Vis spectrophotometer showed the presence of secondary metabolites, namely chlorophyll a and carotenoids. The use of temperature in the solvent evaporation process affects the stability of bioactive compounds and secondary metabolites. The results of the antioxidant activity test (IC50) of the crude extract of Padina australis against DPPH obtained 163 ppm, so it is classified as an antioxidant in the medium category.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74946088","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}
Pub Date : 2022-09-30DOI: 10.30598//ijcr.2022.10-ast
A. Rahayu, I. Mulyadi, J. A. Fajri, S. Jamilatun, N. Nuraini, Nurul Wulandari, Yuni Marlena, Devi Yogi Noviana Ningsih, L. Lim
Liquid waste is the main source of contamination of water bodies, especially river water. This pollution causes decreased water quality in water bodies. One of the wastewater treatment treatments is the Multi Soil Layering (MSL) method. Some of the advantages of using the MSL method are that it is known to be cheap in terms of cost, easy to implement, does not require complicated maintenance so that it can be used continuously, and is also environmentally friendly. One of the constituent materials of the MSL reactor is andesol soil, gravel, and pearlite. MSL has two wastewater treatment zones, the aerobic zone, and the anaerobic zone. The article review aims to compare the efficiency of reducing the levels of pollutant parameters from aerobic and anaerobic processes in MSLmethod in wastewater.
{"title":"The Multi Soil layering Method for Wastewater Treatment: Review","authors":"A. Rahayu, I. Mulyadi, J. A. Fajri, S. Jamilatun, N. Nuraini, Nurul Wulandari, Yuni Marlena, Devi Yogi Noviana Ningsih, L. Lim","doi":"10.30598//ijcr.2022.10-ast","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-ast","url":null,"abstract":"Liquid waste is the main source of contamination of water bodies, especially river water. This pollution causes decreased water quality in water bodies. One of the wastewater treatment treatments is the Multi Soil Layering (MSL) method. Some of the advantages of using the MSL method are that it is known to be cheap in terms of cost, easy to implement, does not require complicated maintenance so that it can be used continuously, and is also environmentally friendly. One of the constituent materials of the MSL reactor is andesol soil, gravel, and pearlite. MSL has two wastewater treatment zones, the aerobic zone, and the anaerobic zone. The article review aims to compare the efficiency of reducing the levels of pollutant parameters from aerobic and anaerobic processes in MSLmethod in wastewater.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85249384","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}
Pub Date : 2022-09-30DOI: 10.30598//ijcr.2022.10-mar
Mardiana Julita, M. Shiddiq, Miftahul Khair
The synthesis of ZnO and ZnO/Au nanoparticles using the laser ablation method in liquid has been successfully carried out. Characterizing the optical properties of ZnO and ZnO/Au using a UV-Vis Spectrophotometer (Ocean Optic MAYA Pro 2000) measured in the wavelength range of 275-875 nm. The characterization results obtained are absorbance and band gap values of ZnO and ZnO/Au nanoparticles. This study found the absorbance values of ZnO nanoparticles at wavelengths 330 and 335 nm. After obtaining the absorbance value, the band gap value was analyzed for ZnO and ZnO/Au nanoparticles, respectively, 3.23 eV and 3.17 eV. The decrease in the band gap value in ZnO is due to the presence of Au in ZnO nanoparticles which can replace one of the lattices in the ZnO crystal structure.
利用激光烧蚀法在液体中成功地合成了ZnO和ZnO/Au纳米颗粒。利用Ocean Optic MAYA Pro 2000紫外可见分光光度计在275-875 nm波长范围内测量ZnO和ZnO/Au的光学性质。表征结果为ZnO和ZnO/Au纳米粒子的吸光度和带隙值。本研究发现ZnO纳米粒子在波长330和335 nm处的吸光度值。在获得吸光度值后，对ZnO和ZnO/Au纳米粒子的带隙值进行了分析，分别为3.23 eV和3.17 eV。ZnO中带隙值的减小是由于Au在ZnO纳米颗粒中的存在取代了ZnO晶体结构中的一个晶格。
{"title":"Determination of Band Gap Energy of ZnO/Au Nanoparticles Resulting in Laser Ablation in Liquid","authors":"Mardiana Julita, M. Shiddiq, Miftahul Khair","doi":"10.30598//ijcr.2022.10-mar","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-mar","url":null,"abstract":"The synthesis of ZnO and ZnO/Au nanoparticles using the laser ablation method in liquid has been successfully carried out. Characterizing the optical properties of ZnO and ZnO/Au using a UV-Vis Spectrophotometer (Ocean Optic MAYA Pro 2000) measured in the wavelength range of 275-875 nm. The characterization results obtained are absorbance and band gap values of ZnO and ZnO/Au nanoparticles. This study found the absorbance values of ZnO nanoparticles at wavelengths 330 and 335 nm. After obtaining the absorbance value, the band gap value was analyzed for ZnO and ZnO/Au nanoparticles, respectively, 3.23 eV and 3.17 eV. The decrease in the band gap value in ZnO is due to the presence of Au in ZnO nanoparticles which can replace one of the lattices in the ZnO crystal structure.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88928613","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}
Pub Date : 2022-09-30DOI: 10.30598//ijcr.2022.10-mir
M. Maahury, Matthew Adi Honey Amos
Nitrobenzene is one of benzene derivatives. Nitrobenzene can be found naturally and also from the synthesis process. Nitrobenzene is used as a raw material to synthesize aniline, textile dyes, pesticides, and drugs. Nitrobenzene is a solvent in the paint industry. The computational calculation was performed for nitrobenzene and its derivatives. Nitrobenzene and its four nitrobenzene derivatives have been optimized using density functional theory/B3LYP functional. The basis set is 3-21G(d). The optimized structure from geometry optimization of the nitrobenzene and its derivatives are in one plane (planar). The parameter structure is changed when substituents change. The bond length increases, and the bond angle decreases when substituents are present.
{"title":"Computational Calculation of Nitrobenzene and Its Derivatives","authors":"M. Maahury, Matthew Adi Honey Amos","doi":"10.30598//ijcr.2022.10-mir","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-mir","url":null,"abstract":"Nitrobenzene is one of benzene derivatives. Nitrobenzene can be found naturally and also from the synthesis process. Nitrobenzene is used as a raw material to synthesize aniline, textile dyes, pesticides, and drugs. Nitrobenzene is a solvent in the paint industry. The computational calculation was performed for nitrobenzene and its derivatives. Nitrobenzene and its four nitrobenzene derivatives have been optimized using density functional theory/B3LYP functional. The basis set is 3-21G(d). The optimized structure from geometry optimization of the nitrobenzene and its derivatives are in one plane (planar). The parameter structure is changed when substituents change. The bond length increases, and the bond angle decreases when substituents are present.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79633633","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}
Pub Date : 2022-09-30DOI: 10.30598//ijcr.2022.10-ans
Anselmus Boy Baunsele, Erly Grizca Boelan, Aloisius Masan Kopon, Rahayu Rahayu, D. Siswanta
Blue methylene is a cationic dye. It is usually as in various industries. The waste of blue methylene can reduce the environmental balance, especially for aquatic biota, by inhibiting the penetration of sunlight into the water. The experiment used the most natural ingredients and methods to minimize the existence of the dye. In this research, coconut husk was activated with NaOH solution and then used for blue methylene adsorption. The coconut husk started aims to reduce the pollution of the adsorbent to increase the adsorption capacity. The study result showed the optimum adsorption of blue methylene at pH 7 for 75 minutes of adsorption with the capacity adsorption of 1.41 mg g-1. The development of the kinetic study described the adsorption process according to a second-order pseudo reaction kinetic model with the constant adsorption rate of 2.54 x 10-4 g mg-1 minute-1.
蓝亚甲基是一种阳离子染料。这通常是在不同的行业。蓝色亚甲基的废物可以通过抑制阳光渗透到水中来减少环境平衡，特别是对水生生物群。该实验使用了最天然的成分和方法，以尽量减少染料的存在。本研究以椰壳为原料，用NaOH溶液对椰壳进行活化，并将其用于蓝亚甲基吸附。椰壳启动的目的是减少吸附剂的污染，提高吸附能力。研究结果表明，在pH为7的条件下，蓝亚甲基的最佳吸附时间为75 min，吸附量为1.41 mg g-1。动力学研究的发展描述了吸附过程的二级伪反应动力学模型，吸附速率为2.54 × 10-4 g mg-1 min -1。
{"title":"Kinetic Study of Blue Methylene Adsorption Using Coconut Husk Base Activated","authors":"Anselmus Boy Baunsele, Erly Grizca Boelan, Aloisius Masan Kopon, Rahayu Rahayu, D. Siswanta","doi":"10.30598//ijcr.2022.10-ans","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-ans","url":null,"abstract":"Blue methylene is a cationic dye. It is usually as in various industries. The waste of blue methylene can reduce the environmental balance, especially for aquatic biota, by inhibiting the penetration of sunlight into the water. The experiment used the most natural ingredients and methods to minimize the existence of the dye. In this research, coconut husk was activated with NaOH solution and then used for blue methylene adsorption. The coconut husk started aims to reduce the pollution of the adsorbent to increase the adsorption capacity. The study result showed the optimum adsorption of blue methylene at pH 7 for 75 minutes of adsorption with the capacity adsorption of 1.41 mg g-1. The development of the kinetic study described the adsorption process according to a second-order pseudo reaction kinetic model with the constant adsorption rate of 2.54 x 10-4 g mg-1 minute-1.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"IA-16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84596391","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}
The process of stockpiling reclamation areas and disposing of waste streams can pollute the environment and cause the attendance of dangerous heavy metals. In this research was conducted to determine heavy metals Cd, Fe, Hg, and Pb levels in water and sediment on Losari beach. The method used was an atomic absorption spectrophotometer. The result showed that the levels of Cd and Fe in the water for the north point were 0.0278 and 0.0432 mg/L, the south point was 0.0031 and 0.0674 mg/L, the point around the platform showed 0.0028 and 0.0534 mg/L and the levels of sediment were 0.0010 and 31.2417 mg/L. The levels of Hg and Pb in water were 0.0235 and 0.0390 mg/L (north point) 0.0105 and 0.0420 mg/L (south point) 0.0027 and 0.0460 mg/L (around the platform), sediments were 0.0027 and 0.071 mg/L. The result concluded that the concentration of Cd had crossed the threshold only at the north point namely 0.01 mg/L, while the concentration of Fe that crossed the threshold was only in sediment namely 20 mg/L. The level of Hg and Pb pollution in the water and sediment of Losari beach tourism is polluted because it exceeds quality standards.
{"title":"Analysis of the Heavy Metal Levels (Cd, Fe, Hg and Pb) at Losari Beach Tourism Reclamation of Makassar","authors":"Firnanelty Firnanelty, S. Chadijah, Syarifah Rabiatul Adawiah, Firdaus Firdaus, Muh. Imam Dyan Nugraha Imam Dyan Nugraha","doi":"10.30598//ijcr.2022.10-fir","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-fir","url":null,"abstract":"The process of stockpiling reclamation areas and disposing of waste streams can pollute the environment and cause the attendance of dangerous heavy metals. In this research was conducted to determine heavy metals Cd, Fe, Hg, and Pb levels in water and sediment on Losari beach. The method used was an atomic absorption spectrophotometer. The result showed that the levels of Cd and Fe in the water for the north point were 0.0278 and 0.0432 mg/L, the south point was 0.0031 and 0.0674 mg/L, the point around the platform showed 0.0028 and 0.0534 mg/L and the levels of sediment were 0.0010 and 31.2417 mg/L. The levels of Hg and Pb in water were 0.0235 and 0.0390 mg/L (north point) 0.0105 and 0.0420 mg/L (south point) 0.0027 and 0.0460 mg/L (around the platform), sediments were 0.0027 and 0.071 mg/L. The result concluded that the concentration of Cd had crossed the threshold only at the north point namely 0.01 mg/L, while the concentration of Fe that crossed the threshold was only in sediment namely 20 mg/L. The level of Hg and Pb pollution in the water and sediment of Losari beach tourism is polluted because it exceeds quality standards.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89144773","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}
Pub Date : 2022-09-29DOI: 10.30598//ijcr.2022.10-ary
Arya Dwi Cahyo Utomo, Muh. Nur Khoiru Wihadi
The preparation of ZnO/TiO2 nanocomposite is done using the sol-gel method for light harvesting in dye-sensitized solar cell (DSSC). The titanium dioxide (TiO2) compound was added with different ratios to the ZnO matrix and measured its effect on solar cells based on the DSSC system. The powder X-ray diffractions of nanocomposite revealed anatase (TiO2) and wurtzite (ZnO) phases have the highest peak at 25.26° and 36.97°, respectively. The energy gap was observed by diffuse reflectance-ultra violet (DR-UV) spectroscopy and it revealed that the optimum performance of nanocomposite was 3.16 eV for the 1:2 ratio. The optimum power efficiency was 2.4% with 3.6 cm2 active area, Voc= 788 mV and Isc=3.39 mA, respectively. The scanning electron microscope-energy dispersive X-ray (SEM-EDX) demonstrated the diversity of surface morphology depends on the ratio of TiO2 in the nanocomposite. This shows the addition of TiO2 to the ZnO matrix influenced the structure of the nanocomposite, which can be applied as DSSC electrodes.
{"title":"Preparation of ZnO/TiO2 Nanocomposite Sensitized Mangosteen Rind (Garcinia mangostana L) Dye for Light Harvesting Efficiency in Solar Cell","authors":"Arya Dwi Cahyo Utomo, Muh. Nur Khoiru Wihadi","doi":"10.30598//ijcr.2022.10-ary","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-ary","url":null,"abstract":"The preparation of ZnO/TiO2 nanocomposite is done using the sol-gel method for light harvesting in dye-sensitized solar cell (DSSC). The titanium dioxide (TiO2) compound was added with different ratios to the ZnO matrix and measured its effect on solar cells based on the DSSC system. The powder X-ray diffractions of nanocomposite revealed anatase (TiO2) and wurtzite (ZnO) phases have the highest peak at 25.26° and 36.97°, respectively. The energy gap was observed by diffuse reflectance-ultra violet (DR-UV) spectroscopy and it revealed that the optimum performance of nanocomposite was 3.16 eV for the 1:2 ratio. The optimum power efficiency was 2.4% with 3.6 cm2 active area, Voc= 788 mV and Isc=3.39 mA, respectively. The scanning electron microscope-energy dispersive X-ray (SEM-EDX) demonstrated the diversity of surface morphology depends on the ratio of TiO2 in the nanocomposite. This shows the addition of TiO2 to the ZnO matrix influenced the structure of the nanocomposite, which can be applied as DSSC electrodes.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76562425","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}
Pub Date : 2022-09-29DOI: 10.30598//ijcr.2022.10-wel
Nasriadi Dali Wela, S. Dali, Armadi Chairunnas, H. Amalia, Srie Puspitasari
Research on the extraction of chemical components of Dengen (Dillenia serrata Thumb) leaves using the MAE (microwave-assisted extraction) method and activity as an antioxidant and toxicity test has been carried out. This study aimed to extract the chemical components of Dengen leaves using the MAE method and to test the antioxidant activity and toxicity of the ethanol extract of Dengen leaves. The chemical components of Dengen leaves were extracted by the MAE method and obtained ethanol extract with a yield of 47%. Dengen leaves ethanol extract was partitioned with n-hexane and ethanol as solvents and obtained yields of 5% (n-hexane) and 65% (ethanol). The chemical components of Dengen leave ethanol extract were identified by phytochemical screening. The results of phytochemical screening showed the presence of secondary metabolites of alkaloids, flavonoids, saponins, polyphenols, terpenoids, and steroids. The antioxidant activity test of the ethanol extract of Dengen leaves was carried out using the DPPH (2,2-diphenyl-1-picrihydrazil) method and obtained the value of IC50 = 100,363 ppm (strong antioxidant). A toxicity test of the ethanol extract of Dengen leaves was carried out using the BSLT (Brine Shrimp Lethality Test) method and obtained the value of LC50 = 18.3443 ppm (very toxic).
{"title":"Extraction of The Chemical Components of Dengen Leaves (Dillenia serrata Thunb) by MAE Method and Activity Test as Antioxidant and Toxicity","authors":"Nasriadi Dali Wela, S. Dali, Armadi Chairunnas, H. Amalia, Srie Puspitasari","doi":"10.30598//ijcr.2022.10-wel","DOIUrl":"https://doi.org/10.30598//ijcr.2022.10-wel","url":null,"abstract":"Research on the extraction of chemical components of Dengen (Dillenia serrata Thumb) leaves using the MAE (microwave-assisted extraction) method and activity as an antioxidant and toxicity test has been carried out. This study aimed to extract the chemical components of Dengen leaves using the MAE method and to test the antioxidant activity and toxicity of the ethanol extract of Dengen leaves. The chemical components of Dengen leaves were extracted by the MAE method and obtained ethanol extract with a yield of 47%. Dengen leaves ethanol extract was partitioned with n-hexane and ethanol as solvents and obtained yields of 5% (n-hexane) and 65% (ethanol). The chemical components of Dengen leave ethanol extract were identified by phytochemical screening. The results of phytochemical screening showed the presence of secondary metabolites of alkaloids, flavonoids, saponins, polyphenols, terpenoids, and steroids. The antioxidant activity test of the ethanol extract of Dengen leaves was carried out using the DPPH (2,2-diphenyl-1-picrihydrazil) method and obtained the value of IC50 = 100,363 ppm (strong antioxidant). A toxicity test of the ethanol extract of Dengen leaves was carried out using the BSLT (Brine Shrimp Lethality Test) method and obtained the value of LC50 = 18.3443 ppm (very toxic).","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89826841","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}
Pub Date : 2022-05-31DOI: 10.30598/ijcr.2022.10-ade
A. Fadeyi, O. I. Adeniran, S. Akiode
Plants play a crucial role in human well-being and health. They provide some of the essential nutrients that humans require as well as act as medications to alleviate and cure various health problems. The purpose of this study is to look into the nutritional value, mineral composition, and the overall contributions of Pterocarpus osun to human nutrition and health. The result of the proximate analysis showed that protein is 9.52% in stem bark and 13.63% in the leaf, while the crude fiber in the stem bark is 37.89% and 46.03%, in the leaf. Ash, 6.74% and 7.46% in the stem bark and leaf respectively while carbohydrate content is 15.37% (stem bark) and 3.26% (leaf). Alkaloids, flavonoids, terpenoids, steroids, and tannins were detected in both organs of the plant tested. The mineral elements present include Ca, Mn, Fe, Ni, Mg, Zn, Cr, Co, Cd, Sulphur, and phosphorus. The antioxidant effect compared favorably well with that of the ascorbic acid used as standard. The extracts were screened for antimicrobial activities using eleven human pathogens. Each of the extracts successfully killed six microbes.
{"title":"Nutrients, Phytochemical, Antioxidant and Antimicrobial Analysis of Pterocarpus osun Stem Bark and Leaf for Their Nutritional, Medicinal Capacity","authors":"A. Fadeyi, O. I. Adeniran, S. Akiode","doi":"10.30598/ijcr.2022.10-ade","DOIUrl":"https://doi.org/10.30598/ijcr.2022.10-ade","url":null,"abstract":"Plants play a crucial role in human well-being and health. They provide some of the essential nutrients that humans require as well as act as medications to alleviate and cure various health problems. The purpose of this study is to look into the nutritional value, mineral composition, and the overall contributions of Pterocarpus osun to human nutrition and health. The result of the proximate analysis showed that protein is 9.52% in stem bark and 13.63% in the leaf, while the crude fiber in the stem bark is 37.89% and 46.03%, in the leaf. Ash, 6.74% and 7.46% in the stem bark and leaf respectively while carbohydrate content is 15.37% (stem bark) and 3.26% (leaf). Alkaloids, flavonoids, terpenoids, steroids, and tannins were detected in both organs of the plant tested. The mineral elements present include Ca, Mn, Fe, Ni, Mg, Zn, Cr, Co, Cd, Sulphur, and phosphorus. The antioxidant effect compared favorably well with that of the ascorbic acid used as standard. The extracts were screened for antimicrobial activities using eleven human pathogens. Each of the extracts successfully killed six microbes. ","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78425412","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}
Pub Date : 2022-05-31DOI: 10.30598/ijcr.2022.10-nad
Nadya Nursidah Pratiwi Subroto, Fadhil Muhammad Tarmidzi, I. Wati, Velia Mulya Armans
A high level of lead in the sediment will cause contamination of aquatic biota. Lead pollutants in water may be treated by an easy and common adsorption process. A combination of both environmentally friendly and renewable materials, low methoxy pectin (LMP), and guar gum as adsorbents can reduce the need of activated carbon which requires high temperatures in its synthesis process. LMP was prepared from high methoxy pectin using a demethylation process under alkaline conditions. LMP and guar gum are diluted in 1 M calcium chloride as a crosslinking agent. The degree of esterification was carried out to determine the demethylation process. Adsorption of lead was carried out with a lead concentration of 165 ppm in acidic conditions for 24 hours. Lead concentration was measured using AAS. Results show that the optimal pH for demethylation was 12. The ratio of 1:2 pectin-guar gum produces the strong beads related to more O-H bonds in guar gum that can be developed. pectin-guar gum beads can adsorb 63% of lead at pH 6 due to the development of hydro-complex metal ions under more basic conditions.
{"title":"Lead Ion Removal in Water Using Low Methoxy Pectin-Guar Gum Beads Hybrid Adsorbent","authors":"Nadya Nursidah Pratiwi Subroto, Fadhil Muhammad Tarmidzi, I. Wati, Velia Mulya Armans","doi":"10.30598/ijcr.2022.10-nad","DOIUrl":"https://doi.org/10.30598/ijcr.2022.10-nad","url":null,"abstract":"A high level of lead in the sediment will cause contamination of aquatic biota. Lead pollutants in water may be treated by an easy and common adsorption process. A combination of both environmentally friendly and renewable materials, low methoxy pectin (LMP), and guar gum as adsorbents can reduce the need of activated carbon which requires high temperatures in its synthesis process. LMP was prepared from high methoxy pectin using a demethylation process under alkaline conditions. LMP and guar gum are diluted in 1 M calcium chloride as a crosslinking agent. The degree of esterification was carried out to determine the demethylation process. Adsorption of lead was carried out with a lead concentration of 165 ppm in acidic conditions for 24 hours. Lead concentration was measured using AAS. Results show that the optimal pH for demethylation was 12. The ratio of 1:2 pectin-guar gum produces the strong beads related to more O-H bonds in guar gum that can be developed. pectin-guar gum beads can adsorb 63% of lead at pH 6 due to the development of hydro-complex metal ions under more basic conditions.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88546607","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}
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