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Journal articles on the topic 'Solvent red 24'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Azkiya, Noor Isnaini, Shafara Najla Marinda Sukmawanta, and Cucuk Evi Lusiani. "Utilization of Red Dragon Fruit (Hylocereus polyrhizus) Peel Waste as an Alternative Indicator for Acid - Base Titration." Jurnal Teknik Kimia dan Lingkungan 9, no. 1 (2025): 31–37. https://doi.org/10.33795/jtkl.v9i1.6169.

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Titration indicators are organic (generally) or inorganic compounds used in titrations to determine and indicate the end point of a titration. Indicators that are widely used in acid-base titrations are synthetic indicators such as phenolphthalein (PP), methyl red (MM), methyl orange (MO), and phenol red (MF). Apart from being relatively expensive, the use of these indicators also produces chemical waste which can pollute the environment. The solution to overcome this problem is to utilize natural ingredients as a substitute for synthetic indicators. The natural indicator used in this research

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Wiyono, Andri Eko, Andrew Setiawan Rusdianto, and Anisa Aprilia. "Karakteristik Ekstrak Pewarna Alami Buah Naga Merah (Hylocereus Polyrhizus) dengan Variasi Rasio Pelarut dan Asam." Jurnal Teknologi dan Industri Pertanian Indonesia 17, no. 1 (2025): 34–43. https://doi.org/10.17969/jtipi.v17i1.34107.

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Dyes are materials that people use for certain purposes. However, the high use of synthetic dyes in non-food products causes environmental pollution and is toxic. Therefore it is necessary to provide another alternative in the form of natural dyes from plants, namely red dragon fruit. This fruit contains anthocyanin as a red dye. Natural dyes are obtained through an extraction process with the same solvent as their properties, such as ethanol. The choice of ethanol to be used as a solvent is usually added with acid to stabilize and optimize the extracted pigments, one of which is citric acid.

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Ermiziar, Tarmizi, Saragih Raskita, and Hanum Latifa. "Effect of Citric Acid Addition at Anthocyanin Solubility of Red Color Melinjo Peels in Solvent Ethanol, Hehane and Petroleum Ether." Applied Mechanics and Materials 873 (November 2017): 83–88. http://dx.doi.org/10.4028/www.scientific.net/amm.873.83.

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The result from a research by Ermiziar, et al(2009) shows that the content of anthocyanin pigment in red colour melinjo peels with ethanol solvent is 10.87 %. Anthocyanin structure which consists of Aromatic Hydrocarbons (Benzene) and the R groups that contain OCH3 is a reason why anthocyanin can also be isolated with non-polar solvents. Nevertheless, the acid environment would be desirable to get more contains of anthocyanin and it can be more stable so it can be used as natural dyes. The research objectives are to isolate anthocyanin pigments using, Etanol, hexane solvent and Petroleum Ether

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4

Leung, Chung-Pui, and Silvia Yin-King Tam. "Quantitative determination of solvent red 24 in hydrocarbon oils by derivative spectroscopy." Analyst 110, no. 7 (1985): 883. http://dx.doi.org/10.1039/an9851000883.

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Amir, Nur Insani, Arafah Nurfadillah, and Tri Rama Dani. "Potential of Red Algae Eucheuma spinosum as Antibacterial to Pseudomonas aeruginosa." Jambura Medical and Health Science Journal 2, no. 2 (2023): 72–80. http://dx.doi.org/10.37905/jmhsj.v2i2.21581.

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Introduction: Eucheuma spinosum is one of Indonesia's potential marine resources that can be used as an antimicrobial. The red algae E. spinosum contains many secondary metabolites which can inhibit the growth of bacteria. This research aimed to determine the optimum inhibitory power of the red algae extract E. spinosum using n-hexane, ethyl acetate, and methanol solvents in inhibiting the growth of Pseudomonas aeruginosa bacteria.Method: The extraction process uses the maceration method with n-hexane, ethyl acetate, and methanol as solvents. Antibacterial testing was carried out using the pap

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6

M.M., A. HAMED. "Solvent Effect on the Electronic Spectral Characteristics of Neutral Red." Journal of Indian Chemical Society Vol. 70, Mar 1993 (1993): 251–55. https://doi.org/10.5281/zenodo.6070949.

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Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt <em>Manuscript received 24 March 1992, accepted 12 November 1992</em> Solvent Effect on the Electronic Spectral Characteristics of Neutral Red

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7

Zhang, Hong-Mei, Yan-Qing Wang, and Ma-Li Jiang. "A fluorimetric study of the interaction of C.I. Solvent Red 24 with haemoglobin." Dyes and Pigments 82, no. 2 (2009): 156–63. http://dx.doi.org/10.1016/j.dyepig.2008.12.008.

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Priyangga, Krisfian Tata Aneka, Yehezkiel Steven Kurniawan, Edi Setiyono, Muhammad Riza Ghulam Fahmi, Hendrik Oktendy Lintang, and Leny Yuliati. "A Fluorescence Study on the Extracts of Red Dragon Fruit Peel in Various Solvents." Indonesian Journal of Natural Pigments 3, no. 2 (2021): 48. http://dx.doi.org/10.33479/ijnp.2021.03.2.48.

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Special attention has been given to red dragon fruit (Hylocereus polyrhizus) because of its unique natural compounds exhibiting wide biological activities. However, the potential use of the red dragon fruit peel has been less addressed. In the present work, simple extraction of red dragon fruit peel was carried out to study the fluorescence properties of the corresponding extracts in various solvents. The red dragon fruit peel was first separated, dried, and macerated for 24 hours using distilled water, ethanol, and acetone, separately. The results demonstrated that the peel extracts exhibited

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9

Araújo, Auryclennedy Calou de, Josivanda Palmeira Gomes, Francilânia Batista da Silva, et al. "Optimization of Extraction Method of Anthocyanins from Red Cabbage." Molecules 28, no. 8 (2023): 3549. http://dx.doi.org/10.3390/molecules28083549.

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Among the vegetables that stand out for their high concentration of anthocyanins, red cabbage appears as one of the most-used sources of these pigments in food production and it is considered a suitable raw material for the extraction of natural dye. Therefore, the objective was to carry out the production of natural extracts from red cabbage, under different conditions, varying the solvent, type of pre-treatment, pH range, and processing temperature during the concentration of the extracts. The anthocyanins were extracted from red cabbage using the following solvents: distilled water, 25% eth

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Lailani, Tias Suci, Ifah Munifah, and Hermanto Hermanto. "Ekstraksi dan Bioaktivitas Antioksidan Pigmen Fikoeritrin dari Rumput Laut Merah Halymenia sp." Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan 15, no. 2 (2020): 115. http://dx.doi.org/10.15578/jpbkp.v15i2.653.

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Fikoeritrin adalah pigmen dari rumput laut merah Halymenia sp. dengan aktivitas antioksidan yang potensial untuk dikembangkan dalam bidang nutraseutikal. Ekstraksi fikoeritrin dapat dilakuan dengan berbagai jenis pelarut. Namun, penggunaan pelarut yang tidak sesuai dapat berdampak terhadap rendemen, kemurnian, dan juga bioaktivitas ekstrak fikoeritrin. Oleh karena itu, penelitian ini bertujuan untuk mendapatkan jenis pelarut dan durasi waktu ekstraksi (secara maserasi) yang tepat sehingga menghasilkan ekstrak dengan rendemen, kemurnian, dan daya antioksidan fikoeritrin terbaik. Ekstraksi dilak

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Brahm, J., and W. R. Galey. "Diffusional solute flux during osmotic water flow across the human red cell membrane." Journal of General Physiology 89, no. 5 (1987): 703–16. http://dx.doi.org/10.1085/jgp.89.5.703.

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The effect of solvent drag on the unidirectional efflux of labeled water, urea, and chloride from human red cells was studied by means of the continuous flow tube method under conditions of osmotic equilibrium and net volume flow. Solvent (water) flow out of cells was created by mixing cells equilibrated in 100 mM salt solution with a 200-mM or 250-mM salt solution, while flow of water into cells was obtained by equilibrating the cells in the higher concentration and mixing them with the 100-mM solution. Control experiments constitute measurements of efflux of [14C]ethanol in normal cells and

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Kulkarni, Ashwini N., Avinash A. Kadam, Manvendra S. Kachole, and Sanjay P. Govindwar. "Lichen Permelia perlata: A novel system for biodegradation and detoxification of disperse dye Solvent Red 24." Journal of Hazardous Materials 276 (July 2014): 461–68. http://dx.doi.org/10.1016/j.jhazmat.2014.05.055.

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Desta Donna Putri Damanik, Nurhayati Surbakti, and Rosdanelli Hasibuan. "EKSTRAKSI KATEKIN DARI DAUN GAMBIR (Uncaria gambir roxb) DENGAN METODE MASERASI." Jurnal Teknik Kimia USU 3, no. 2 (2014): 10–14. http://dx.doi.org/10.32734/jtk.v3i2.1606.

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Catechins are a major components in the plant gambier. Beside catechins, there are several other components such as acid catechu tannat, quersetin, red catechu, gambier flouresin, fats and waxes. More than 80% of gambier production in Indonesia comes from the province of West Sumatra and North Sumatra, mainly in Limapuluh and Pakpak Bharat. Extraction of catechins from gambir leaf was performed by means of maceration that is soaking with a solvent polar. Maceration is carried out by temperature variations, 30°C, 40°C, 60°C and 80°C; maceration of time that is 1 hour, 6 hours, 12 hours, and 24

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ŞEYHAHMET, Aye, Zuhal ŞAHİN, Fatih SÖNMEZ, and Mustafa KÜÇÜKİSLAMOĞLU. "The effect of pH and extraction time on total phenolic content and antioxidant properties of coloured water extracts from Brassica Oleracea." International Journal of Agriculture, Environment and Food Sciences 8, no. 1 (2024): 20–24. http://dx.doi.org/10.31015/jaefs.2024.1.3.

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Red cabbage (Brassica oleracea) is a rich source of phenolic content including colour pigments and have also high antioxidant capacities. The amounts of their phenolic substances and antioxidant activities change depending on the extraction conditions (pH, time, solvent, etc.). In this work, the coloured water extract was obtained from red cabbage at different pH values (pH 4-10) for both an hour and 24 hours. The extracts were evaluated regarding total phenolic contents and antioxidant activities. The results showed that the total phenolic content of red cabbage extracts in all extraction con

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Dinira, Layta, Novita Rosyida, and Eka Ratri Noor Wulandari. "Ultrasonic Wave Assisted Maceration Method for Extraction of Red-Purple Pigment from Six Varieties of Red Spinach." Rekayasa Bahan Alam dan Energi Berkelanjutan 5, no. 2 (2021): 10–15. http://dx.doi.org/10.21776/ub.rbaet.2021.005.02.02.

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Natural dyes have been widely used for coloring food. Red spinach is an alternative resource of red violet color as it is abundant in nature. Despite its simplicity of extraction technique, the maceration method still needs enhancement because it is time-consuming. Ultrasound-assisted extraction (UAE) was used to shorten the extraction time. In this study, the red-violet pigment extraction has been carried out by the maceration method for six red spinach varieties. The spinach leaves' ratio to a mixture of ethanol 96% and citric acid 10% were 1:7, 1:9, 1:11, and 1:13. The highest absorbance fo

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Stefanowska, Karolina, Magdalena Woźniak, Anna Sip, Róża Biegańska-Marecik, Renata Dobrucka, and Izabela Ratajczak. "Kombucha as a Solvent for Chitosan Coatings: A New Strategy to Extend Shelf Life of Red Peppers." Materials 18, no. 7 (2025): 1605. https://doi.org/10.3390/ma18071605.

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Plastic pollution and environmental degradation necessitate the development of natural, biodegradable food preservation materials. This study examined chitosan-based film-forming solutions using kombucha derived from black tea, lemon balm, and chamomile as natural solvents rich in bioactive compounds. Lemon balm kombucha solutions were used to create chitosan films and coat red peppers. The study assessed the mechanical properties of the films and the effects of chitosan coating on peppers, including texture, ascorbic acid content, sensory attributes, and antioxidant activity. Microbiological

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Enearepuadoh, Orodu, Victo, and Dakitima, Egioni Philip. "EXTRACTION AND GCMS ANALYSIS OF OIL FROM RED COCOYAM PEEL (colocasia esculenta)." International Journal of Medical Science and Dental Health 10, no. 07 (2024): 75–94. http://dx.doi.org/10.55640/ijmsdh-10-07-09.

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Extraction of oil from red cocoyam peel has been carried out using the cold extraction method, with a reagent n-hexane as the extraction solvent The GC-MS was used to identify the components in the oil after extraction, the components that was found in the oil include, 1,3,5- trimethy benzene at a retention time of (2.844)min with a peak of 3.342%, n-hexadecanoic acid at a retention time of(7.250)min with a peak of 26.395%, 9,12-octadecadienoic acid at a retention time of (7.685)min with a peak of 2.036%, 1,1-dimethyl hexadecenoate at a retention time (7.794)min with a peak of 2.013%,9-octadec

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Khoirunnisa, Hilma Maulia, and Ahmad Muhammad Fuadi. "Pengaruh Waktu Maserasi dan Konsentrasi Pelarut Etanol Terhadap Rendemen dan Aktivitas antioksidan pada Bayam Merah (Amaranthus tricolor L)." Jurnal Ilmiah Teknik Kimia 7, no. 2 (2023): 72–78. http://dx.doi.org/10.32493/jitk.v7i2.29537.

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As technology advances, it results in environmental pollutants, UV rays, and ionizing radiation which cause various diseases due to tissue damage due to the presence of free radicals, where free radicals attack healthy body cells. One of the compounds that can inhibit free radicals is antioxidants. which can provide endogenous protection and exogenous oxidative stress by scavenging free radicals. The body's defense system that can be used to fight free radicals is food. One of the foods that contain antioxidants is red spinach (Amaranthus tricolor L.). The purpose of this study was to determin

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Eppang, Betzy, Nurhaeni, Khairuddin, Ahmad Ridhay, and Jusman. "Retensi Antosianin dari Ekstrak Daun Bayam Merah (Alternanthera amoena Voss) pada Pengolahan Mie Basah." KOVALEN: Jurnal Riset Kimia 6, no. 1 (2020): 53–60. http://dx.doi.org/10.22487/kovalen.2020.v6.i1.14795.

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Research about the retention of red spinach leaves extract (Alternanthera amoena Voss) as a natural coloring and preservative in wet noodles has been done. The study aim is to determine the anthocyanin retention of red spinach leaves extract in the processing of wet noodles and determine the organoleptic quality of wet noodles by adding pigment red spinach leaves extract. The extraction method used the maceration method by ethanol solvent. Anthocyanin levels on an extract that obtained by using a UV-Vis spectrophotometer were 33.34%. Anthocyanin retention of red spinach leaves extract on wet n

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Ahlam Husain Farhoud Khalawi. "Study to detect cytotoxicity of The eggplant plant ( Solanum melongena L)." University of Thi-Qar Journal of agricultural research 11, no. 2 (2022): 36–44. http://dx.doi.org/10.54174/utjagr.v11i2.179.

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The current study included the cytotoxicity test of the active compounds isolated from the peels of the fruits of the eggplant plant, which is found in the local markets of Dhi Qar governorate and used for food and grown within the governorate and not imported during the period (July, August, September, October, November, December. January), the trend of human red blood cells for the purpose of determining the possibility of using them as drug alternatives in the future. The peels of the eggplant plant were extracted with hexane once, then the alkaloid extract was prepared from it again.

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Honga, Johan, Adolf J. N. Parhusip, Nuri A. Anugrahati, Wenny S. L. Sinaga, and Veliana Angel. "Stabilization of red melinjo peel (gnetum gnemon L.) ethyl acetate extract as antibacterial agent." Journal of Functional Food and Nutraceutical 1, no. 1 (2019): 1–12. http://dx.doi.org/10.33555/jffn.v1i1.7.

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Melinjo (GnetumgnemonL.) is a typical Indonesian plant that has many benefits such as antimicrobial agent. The aim of this study was to determine the antimicrobial activity of red melinjo peel extract. In this study, extraction was conducted by maceration using ethyl acetate as solvent for 24 hours at room temperature. 4-16% red melinjo peel extract (w/v) could inhibit the growth of Staphylococcus aureusATCC 6538, Listeria monocytogenesATCC 7644 and SalmonellaTyphi ATCC 14028. However 4-16% red melinjo peel extract could not inhibit the growth of Candida albicansATCC 10231. In stability test,

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A. El-Korashy, Sabry, Alaa S. Amin, Ayman A. Gouda, Mustafa Kh. Alshuwaili, and Hoyeda E. Ibrahim. "Utilisation of charge transfer complexation reactions for the quantification of antifungal drug: Voriconazol in pure and dosage forms." Bulletin of the Chemical Society of Ethiopia 39, no. 2 (2024): 189–200. http://dx.doi.org/10.4314/bcse.v39i2.1.

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Voriconazole, a pivotal antifungal agent, has been analysed using two uncomplicated, sensitive, rapid, and validated spectrophotometric methods. These procedures rely on the formation of charge transfer complexes in methanol, employing alizarin red S and quinalizarin as chromogenic reagents, each exhibiting absorption maxima at 568 and 513 nm, respectively. The optimisation of reaction conditions was explored, encompassing the choice of solvent, reagent concentration, and reaction duration. Both alizarin red S and quinalizarin demonstrated excellent adherence to Beer's law over concentration r

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Siddiqui, Durr-e.-Amna, Lucia Coulter, Charlie Loudon, and Zafar Fatmi. "‘The brighter the worse’: Lead content of commercially available solvent-based paints intended for residential use in Pakistan." F1000Research 12 (February 13, 2023): 166. http://dx.doi.org/10.12688/f1000research.128909.1.

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Background: Environmental pollution and exposure to lead (Pb) through household paint continue to be a great concern, especially for low- and middle-income countries (LMICs). Methods: We measured the Pb levels of solvent-based paints commercially available in Karachi, Pakistan. We visited major markets and collected commonly available brands of paint, sampling the yellow, red, and white colors of each. The paint samples’ Pb content was measured using inductively coupled argon plasma atomic emission spectrometry (ICP-AES). Results: Of the 60 analyzed paint samples, 24 (40%) contained Pb levels

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Musdzalifah, M., M. Fahrurrozi, W. B. Sediawan, and D. Y. Susanti. "Separation of proanthocyanidin from red sorghum seed extract using macroporous resin." IOP Conference Series: Earth and Environmental Science 963, no. 1 (2022): 012043. http://dx.doi.org/10.1088/1755-1315/963/1/012043.

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Abstract Proanthocyanidin has been extracted from red sorghum seed with Ultrasound-Assisted Extraction using an aqueous-based solvent. Proanthocyanidin concentration in the extract is relatively low mixing with other compounds. The adsorption method was chosen to separate proanthocyanidin compounds due to the relatively simple operation to recover targeted solutes from low concentration solutions. The purpose of this study was to find an efficient adsorbent for separating proanthocyanidin from red sorghum seed extract. Two types of macropore resin were investigated, namely macropore resin AB-8

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Haryati, Tanti, Novita Andarini, and Siti Mardhiyah. "THE EFFECT OF SOL-GEL TEMPERATURE AND SOLVENT POLYETHYLENE GLYCOL (PEG) IN ZnO- TiO2 PHOTOCATALYST ACT AS DEGRADER OF TEXTILE DYEING LIQUID WASTE." ALCHEMY Jurnal Penelitian Kimia 10, no. 2 (2016): 149. http://dx.doi.org/10.20961/alchemy.10.2.536.149-156.

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<p>The use of TiO<sub>2</sub> powder as photocatalyst still provides some disadvantages such as the difficulties in regenerate ion, the low adsorption and turbulence . These problems can be overcomed by providing the photocatalyst as a composite of ZnO-TiO2. This research aims to investigate the effect of composition of solvent and temperatureof synthesis on the quality and photocatalytic activity of ZnO-TiO2 which was prepared by sol-gel method. The photocatalytic activity was determined by applying the composite in degradation of Procion Red MX-8B under irradition of UV lig

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Haryati, Tanti, Novita Andarini, and Siti Mardhiyah. "THE EFFECT OF SOL-GEL TEMPERATURE AND SOLVENT POLYETHYLENE GLYCOL (PEG) IN ZnO- TiO2 PHOTOCATALYST ACT AS DEGRADER OF TEXTILE DYEING LIQUID WASTE." ALCHEMY Jurnal Penelitian Kimia 10, no. 2 (2016): 149. http://dx.doi.org/10.20961/alchemy.v10i2.536.

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<p>The use of TiO<sub>2</sub> powder as photocatalyst still provides some disadvantages such as the difficulties in regenerate ion, the low adsorption and turbulence . These problems can be overcomed by providing the photocatalyst as a composite of ZnO-TiO2. This research aims to investigate the effect of composition of solvent and temperatureof synthesis on the quality and photocatalytic activity of ZnO-TiO2 which was prepared by sol-gel method. The photocatalytic activity was determined by applying the composite in degradation of Procion Red MX-8B under irradition of UV lig

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Guner, Tugrul, Anilcan Kus, Mehmet Ozcan, Aziz Genc, Hasan Sahin, and Mustafa M. Demir. "Green fabrication of lanthanide-doped hydroxide-based phosphors: Y(OH)3:Eu3+ nanoparticles for white light generation." Beilstein Journal of Nanotechnology 10 (June 7, 2019): 1200–1210. http://dx.doi.org/10.3762/bjnano.10.119.

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Phosphors can serve as color conversion layers to generate white light with varying optical features, including color rendering index (CRI), high correlated color temperature (CCT), and luminous efficacy. However, they are typically produced under harsh synthesis conditions such as high temperature, high pressure, and/or by employing a large amount of solvent. In this work, a facile, water-based, rapid method has been proposed to fabricate lanthanide-doped hydroxide-based phosphors. In this sense, sub-micrometer-sized Y(OH)3:Eu3+ particles (as red phosphor) were synthesized in water at ambient

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Gopalakrishnan, B. "ANTICANCER ACTIVITY OF NATURAL COMPOUND FROM LEMON GRASS LEAVES EXTRACT ON LUNG CARCINOMA CELL LINE A549: AN IN VITRO STUDY." Journal of Medical pharmaceutical and allied sciences 10, no. 6 (2021): 3813–18. http://dx.doi.org/10.22270/jmpas.v10i6.1481.

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Lemon grass is a widely cultivated plant, whose extracts are known to possess anti-cancer properties. However, studies related to the effect of different solvent extracts of lemon grass on lung cancer cell lines are scarce. This study was conducted to study the effect of various extracts on the viability of the A549 lung carcinoma cell line. Four solvents (hexane, chloroform, ethyl acetate and ethanol) were used for extraction of lemon grass. The effect of these solvent extracts on A549 cell line was studied. Cell viability was studied by 3-(4,5-Dimethylthiazol-2-Yl)-2,5-Diphenyltetrazolium Br

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Jie, Zhang, Li Chun-Yan, Li Jing-Ping, et al. "Immunoregulation on Mice of Low Immunity and Effects on Five Kinds of Human Cancer Cells ofPanax japonicusPolysaccharide." Evidence-Based Complementary and Alternative Medicine 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/839697.

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The goal of this study is to investigate the immunoregulative effects ofPanax japonicuspolysaccharide (PJPS) on mice of low immunity. An orthogonal experiment was designed to determine the best extraction process for PJPS. By the tests of macrophages swallow chicken red blood cells, Delayed-type hypersensitivity (DTH), and serum hemolysin value, we studied the immune adjustment ability of PJPS. MTT was employed to detect the effects of different concentrations of PJPS, respectively, in 24 h, 48 h, and 72 h on five kinds of human cancer cells. The results show that the best extraction process f

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Yamamoto, Ryuya, Martin Alain Mune Mune, Yoshikatsu Miyabe, Hideki Kishimura, and Yuya Kumagai. "Monthly Variation in Mycosporine-like Amino Acids from Red Alga Dulse (Devaleraea inkyuleei, Formerly Palmaria palmata in Japan)." Phycology 3, no. 1 (2023): 127–37. http://dx.doi.org/10.3390/phycology3010008.

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Mycosporine-like amino acids (MAAs) are natural ultraviolet-absorbing compounds found in microalgae and macroalgae. MAA content changes seasonally and in response to environmental factors. We previously investigated MAAs from the red alga dulse (Devaleraea inkyuleei, formerly Palmaria palmata in Japan) in Usujiri, Hokkaido, Japan, from 2019 to 2020. At that time, some factors affecting MAA content were still unclear. In this study, we investigated MAA variation during the period from January to June 2021, and evaluated new methods of MAA extraction from dulse. We recorded a maximum MAA extract

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Rachmawaty, Farida Juliantina, Zainuri Sabta Nugraha, Ika Fidianingsih, et al. "Subchronic Toxicity Testing of Ethanol Extract of Red Betel Vine (Piper crocatum) Leaves in DDY Strain Mice." International Journal of Human and Health Sciences (IJHHS) 8, no. 1 (2024): 69. http://dx.doi.org/10.31344/ijhhs.v8i1.623.

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Background: The red betel vine (Piper crocatum) is a plant that has potential as a medicinal plant. The use of medicinal plants should be tested for safety. Acute toxicity testing has been performed with safe results for consumption, but there is no known long-term effect on various organs.Objective: To determine whether an ethanol extract of the red betel vine could be used safely on different parts of DDY mice.Methods: The treatment of ethanol extract was performed orally every day by using a feeding tube with different doses in mice within 3 months. Those were divided into several groups, e

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Budiman, Arif, Sandra Megantara, Putri Raraswati, and Tazyinul Qoriah. "SOLID DOSAGE FORM DEVELOPMENT OF GLIBENCLAMIDE WITH INCREASING THE SOLUBILITY AND DISSOLUTION RATE USING COCRYSTALLIZATION." International Journal of Applied Pharmaceutics 10, no. 6 (2018): 181. http://dx.doi.org/10.22159/ijap.2018v10i6.29257.

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Objective: The aim of this study was to develop a solid dosage form of glibenclamide with increasing the solubility properties of glibenclamide with cocrystallization method.Methods: Virtual screening was performed to investigate the interaction between glibenclamide and a co-former. Saccharin, the selected co-former, then co-crystallized with glibenclamide with equimolar ratios of 1:1 and 1:2 using the solvent evaporation method. Further characterization was performed using an infra-red (IR) spectrophotometer, differential scanning calorimetry (DSC), and powder x-ray diffraction (PXRD).Result

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Tran, Hoang V., Nhan T. Hoang, Thu D. Le, Luyen T. Tran, and Hue T. M. Dang. "Graphene Oxide/Fe3O4/Chitosan−Coated Nonwoven Polyester Fabric Extracted from Disposable Face Mask for Enhanced Efficiency of Organic Dye Adsorption." Adsorption Science & Technology 2022 (January 25, 2022): 1–13. http://dx.doi.org/10.1155/2022/8055615.

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Owing to the COVID-19 pandemic, huge amounts of disposable face masks have been manufactured and used, and these discarded face masks have to be treated. In this study, we propose a simple approach for reusing the nonwoven polyester fabric (NWPF) from disposable face masks. In this approach, NWPF is utilized as a supporter for coating of a layer of graphene oxide/Fe3O4/chitosan (GFC) to form a GFC/NWPF adsorbent at room temperature via a simple spray coating method that does not require any solvent. The specific properties of GFC, NWPF, and the GFC/NWPF adsorbent were analysed via X-ray diffra

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Angger Sakti, Awistaros, Zein Ahmad Baihaqi, Bambang Suwignyo, Ahmad Sofyan, Hendra Herdian, and Kustantinah. "Anthelmintic Activity of Red Macroalgae Acrocystis sp. and Acanthophora sp. Etanolic Extract Against Haemonchus contortus in Sheep In Vitro." IOP Conference Series: Earth and Environmental Science 1360, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1360/1/012004.

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Abstract This study aimed to evaluate the anthelmintic activity of ethanolic extracts from red macroalgae Acrocystis sp. and Acanthophora sp. against the nematode Haemonchus contortus found in sheep, in vitro. The adult worm motility test was conducted in a factorial completely randomized design with two factors: the type of macroalgae as the first factor and the time of observation as the second factor. A total of 100 adult female H. contortus worms were randomly divided into four treatments with five replicates each. Each replicate consisted of 5 worms placed in a petri dish containing 5 mL

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Cai, Shuyan, Huimin Song, Haoliang Wu, Gang Zhi Gao, and Jianwei Zheng. "Phytoestrogens on the Proliferation of Breast Cancer Cell MCF - 7." Tobacco Regulatory Science 7, no. 4 (2021): 422–31. http://dx.doi.org/10.18001/trs.7.4.20.

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A cell is an organic whole containing biological macromolecules such as nucleic acid and protein. Human cells contain about 15,000 proteins, which play an important role in the development of cell life. This article aims to study the effect of phytoestrogens on the proliferation of breast cancer cells MCF - 7. The estrogen - dependent MCF - 7 cells described in this article are grown on average DMEM (containing calf serum 10) and connected to single cell culture. Five days before adding the test product, the cells were washed with PBS and converted into red - free phenol. High - sugar DMEM con

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Cai, Shuyan, Huimin Song, Haoliang Wu, Gang Gao, and Jianwei Zheng. "Phytoestrogens on the Proliferation of Breast Cancer Cell MCF-7." Tobacco Regulatory Science 7, no. 5 (2021): 3276–85. http://dx.doi.org/10.18001/trs.7.5.1.102.

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A cell is an organic whole containing biological macromolecules such as nucleic acid and protein. Human cells contain about 15,000 proteins, which play an important role in the development of cell life. This article aims to study the effect of phytoestrogens on the proliferation of breast cancer cells MCF-7. The estrogen-dependent MCF-7 cells described in this article are grown on average DMEM (containing calf serum 10) and connected to single cell culture. Five days before adding the test product, the cells were washed with PBS and converted into red-free phenol. High-sugar DMEM containing 5

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Nugrahani, Ilma, and Silvana Anggraeni. "EFFECT OF ETHANOL-WATER COMPOSITION ON CLINDAMYCIN HYDROCHLORIDE PSEUDOPOLYMORPHISM." International Journal of Pharmacy and Pharmaceutical Sciences 8, no. 11 (2016): 269. http://dx.doi.org/10.22159/ijpps.2016v8i11.14132.

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Objective: Formation of clindamycin hydrochloride (clindamycin HCl) in monohydrate-ethanolate from the recrystallization process with ethanol–water (5:2) has been reported a long time ago. However, the effect of ethanol-water compositions into pseudo-polymorphism formation and its stability of was not reported yet. This study aimed to investigate the effect of ethanol-water proportion on the formation of clindamycin HCl-monohydrate and its ethanol solvate.Methods: Clindamycin HCl was recrystallized with the various percentages of ethanol. The fresh and after storage for 24 h at humidity and ro

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N.H., Che Hamzah, N. Khairuddin, and I. I. Muhammad. "Preparation and characterization of starch-based pH indicator films for anthocyanin release." Food Research 8, Supplementary 3 (2024): 110–16. http://dx.doi.org/10.26656/fr.2017.8(s3).6.

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Perishable foods such as fish, chicken, and milk products lose their characteristic freshness over time, signalling the onset of deterioration. pH-sensitive smart indicator films are practical tools for quality control and delivery of visual information about the freshness of food through colour changes. In this study, Brassica oleracea (commonly known as red cabbage) and sago starch (SS) were used to synthesise pH-sensitive films plasticized with glycerol. Sago starch is cheap, abundant, and easily available whereas red cabbage is an excellent source of food colourants. Different concentratio

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Brennessel, William W., Alexander Romanenkov, Victor G. Young, and John E. Ellis. "Tantalum isocyanide complexes: TaI(CNDipp)6 (Dipp is 2,6-diisopropylphenyl) and ionic [Ta(CNDipp)7][Ta(CNDipp)6], a formal disproportionation product of the 17-electron Ta0 metalloradical Ta(CNDipp)6." Acta Crystallographica Section C Structural Chemistry 75, no. 2 (2019): 135–40. http://dx.doi.org/10.1107/s2053229619000834.

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Treatment of tetraethylammonium hexacarbonyltantalate, [Et4N][Ta(CO)6], with 1.1 equivalents of molecular iodine (I2) in tetrahydrofuran (THF) at 200 K, followed by the addition of 6.0 equivalents of 2,6-diisopropylphenyl isocyanide (CNDipp) and slow warming to 293 K over a 24 h period gave the tantalum(I) iodide derivative hexakis(2,6-diisopropylphenyl isocyanide-κC)iodidotantalum(I), [TaI(C13H17N)6] or TaI(CNDipp)6, 1. Recrystallization of this substance from pentane provided deep-red nearly black parallelepipeds of the product, which was characterized by single-crystal X-ray diffraction. Ad

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Gorokhov, Valeriy Yur'yevich, Irina Dmitriyevna Yakimova, and Ol'ga Gennad'yevna Stryapunina. "COMPARATIVE EVALUATION OF THE ANTIOXIDANT ACTIVITY OF MEDICINAL PLANTS IN THE PERM RE-GION." chemistry of plant raw material, no. 1 (March 13, 2023): 265–72. http://dx.doi.org/10.14258/jcprm.20230111611.

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The paper considers the antioxidant properties of water and alcohol extractions of fermented and unfermented fireweed of the narrow-leaved fireweed family (Chamerion Angustifolium Onagraceae), St.), bitter wormwood (Artemisia absintium L.), red clover (Trifolium pratense). The effect of the fermentation process, solvent, and extraction time on antioxidant activity (AOA) was studied. A comparative assessment of the antioxidant properties of medicinal plants of the Perm region was carried out. Using the potentiometric method, it was found that the AOA values of water extracts of fireweed angusti

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Hellen Campanha, Nara. "Denture Adhesive Containing Microparticles for Delivery of Miconazole: In Vivo Toxicity." Open Access Journal of Dental and Oral Surgery (OAJDOS) 3, no. 1 (2022): 1–6. http://dx.doi.org/10.54026/oajdos/1026.

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The choice treatment for denture stomatitis are topical antifungals such as miconazole nitrate (MN). Targeting denture wearers, an experimental denture adhesive (EA) was developed containing polymeric microparticles (MPs) for the delivery of MN. Objectives: To investigate the systemic toxicity in rats of the EA added with MN MPs. Methods: Thirty-five Wistar rats received intraperitoneal injection of the materials: artificial saliva (AS) as solvent, Corega Cream® (CCDA), pure EA or EA added with MN MPs (sigla), and pure MN or MNMP. Animal behavior impairment (level 0-4) and weight (g) analyses

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Abebe, Dehnnet, Gomathi Periasamy, Aman Karim, and Helen Bitew. "Evaluation of the Effect of Hydroethanolic Root Extract and Solvent Fractions of Cyphostemma adenocaule (Steud. ex A. Rich) Descoings ex Wild & Drummond on Cell-Mediated Immune Response and Blood Cell Count in Mice." Evidence-Based Complementary and Alternative Medicine 2021 (February 10, 2021): 1–6. http://dx.doi.org/10.1155/2021/1838903.

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Introduction. Cyphostemma adenocaule (Steud. ex A. Rich) Descoings ex wild & Drummond (Vitaceae) has been used in traditional medicine for the management of various immunological and hematological disorders in different areas of Ethiopia and the rest of the world. In Ethiopia, the plant is used for the management of enlarged spleen, rabies virus, helminthic infection, snake bite, and various types of tumors. Objective. To evaluate the effect of hydroethanolic root extract and solvent fractions of Cyphostemma adenocaule on cell-mediated immunity (delayed-type hypersensitivity), organ index

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Garaigordobil, Ekhiñe, Leticia Martínez-Lapuente, Zenaida Guadalupe, Silvia Pérez-Magariño, and Belén Ayestarán. "Recovery of Polysaccharides from Red Grape Marc and White Grape Pomace by Degradation of Cell Walls by Enzymes with Different Activities." Molecules 30, no. 2 (2025): 213. https://doi.org/10.3390/molecules30020213.

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The recovery of polysaccharides (PS) from red grape marc and white grape pomace by enzymatic degradation of their cell walls is an interesting green extraction technique that preserves the structure and bioactivity of PS. The type and dose of enzyme, and the liquid/solid (L/S) ratio in PS extraction were studied using four commercial enzymes. Four different doses per enzyme were used, with tartaric acid as solvent and L/S ratios of 1.3/1 and 4/1 for 24 h at 20 °C, compared with a control. The highest dose of enzyme E1, polygalacturonase + pectin lyase + pectin-methyl-esterase (with the highest

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Cosme, Fernanda, Sara Gomes, Alice Vilela, Luís Filipe-Ribeiro, and Fernando M. Nunes. "Air-Depleted and Solvent-Impregnated Cork Powder as a New Natural and Sustainable Fining Agent for Removal of 2,4,6-Trichloroanisole (TCA) from Red Wines." Molecules 27, no. 14 (2022): 4614. http://dx.doi.org/10.3390/molecules27144614.

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Trichloroanisole (TCA) in wine results in a sensory defect called “cork taint”, a significant problem for the wine industry. Wines can become contaminated by TCA absorption from the atmosphere through contaminated wood barrels, cork stoppers, and wood pallets. Air-depleted solvent-impregnated (ADSI) cork powder (CP) was used to mitigate TCA in wines. The ADSI CP (0.25 g/L) removed 91% of TCA (6 ng/L levels), resulting in an olfactory activity value of 0.14. A Freundlich isotherm described ADSI CP TCA adsorption with irreversible adsorption and a KF = 33.37. ADSI CP application had no significa

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Tsamesidis, Ioannis, Paraskevi Tzika, Despoina Georgiou, et al. "Oil from Mullet Roe Byproducts: Effect of Oil Extraction Method on Human Erythrocytes and Platelets." Foods 13, no. 1 (2023): 79. http://dx.doi.org/10.3390/foods13010079.

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Background: The valorization of byproducts to obtain high nutritional value foods is of utmost importance for our planet where the population is booming. Among these products are oils rich in ω-3 fatty acids produced from fishery byproducts. Recently, mullet roe oil from roe byproducts was produced that was rich in the ω-3 fatty acids eicosatetraenoic acid (EPA) and docosahexaenoic acid (DHA). Oils are customarily characterized for their composition and degree of oxidation but little is known of their biological effects, especially the effect of the extraction method. Methods: The purpose of t

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Fatima, Shaista, Saira Yahya, Adeena Siddiqui, and Misbah Khadim. "Surveillance of Aflatoxigenic Aspergilli and Aflatoxin Contamination in Edible Oils from Karachi: A Molecular and Quantitative Approach." Saudi Journal of Biomedical Research 10, no. 01 (2025): 31–40. https://doi.org/10.36348/sjbr.2025.v10i01.003.

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The presence of secondary metabolite, particularly aflatoxin produced by fungi, poses economic challenges in food and feed industries. This study aimed to identify aflatoxigenic Aspergillus species inedible oil and quantify total aflatoxins levels. We collected thirty sample of edible oil from various local market in Karachi and tested them for presence of Aspergillus flavus and total aflatoxin levels. Out of thirty, four samples tested positive for Aspergillus flavus using culture-based methods, which were subsequently confirmed by amplification of partial transcribed (ITS) region. Aflatoxin

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Elnabawy, El-Said M., Sabry Hassan, and El-Kazafy A. Taha. "Repellent and Toxicant Effects of Eight Essential Oils against the Red Flour Beetle, Tribolium castaneum Herbst (Coleoptera: Tenebrionidae)." Biology 11, no. 1 (2021): 3. http://dx.doi.org/10.3390/biology11010003.

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This study was conducted to compare the repellent effect and contact toxicity of eight essential oils (EOs), including Syzygium aromaticum, Allium sativum, Eucalyptus camaldulensis, Lavandula officinalis, Simmondsia chinensis, Matricaria chamomilla, Citrus limon, and Prunus dulcis, against adults of Tribolium castaneum Herbst. Four concentrations (1, 5, 10, and 15% in acetone solvent) of each EO were tested. The 5, 10, and 15% concentrations of S. aromaticum EO had a high repellency effect against T. castaneum compared with A. sativum, E. camaldulensis, L. officinalis, S. chinensis, M. chamomi

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Erawati, Emi, Rois Fatoni, Hamid Hamid, and Tri Noviasari. "The Effect of Temperature and Solvent Concentration on Chemical and Physical Properties of Carrageenan from Gracilaria gracilis." Journal of Pure and Applied Chemistry Research 14, no. 1 (2025): 59–72. https://doi.org/10.21776/ub.jpacr.2025.014.01.695.

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Carrageenan is a polysaccharide extracted from seaweed sap using either air or an alkaline solution, specifically from species belonging to the Rhodophyceae (red algae) family, such as Gracilaria gracilis. It functions as a thickening, emulsifying, suspending, and stabilizing agent. This study aims to examine the effect of varying KOH concentrations and temperatures on the extraction of carrageenan from Gracilaria gracilis, as well as on the resulting physical and chemical properties of the seaweed. A total of 60 g of dried Gracilaria gracilis was soaked in 500 mL of distilled water for 24 hou

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Amaliyah, Suci. "SYNTHESIS AND CHARACTERIZATION OF CELLULOSE STEARATE ESTER FROM BACTERIAL CELLULOSE AND STEARIC ACID ENZYMATICALLY USING IMMOBILIZED LIPASE." Molekul 11, no. 2 (2016): 256. http://dx.doi.org/10.20884/1.jm.2016.11.2.225.

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The aims of this study were to determine the optimum conditions of enzymatic esterification between stearic acid with bacterial cellulose using immobilized lipase and to characterize the obtained ester. The optimum condition was observed by the effects of time and mass ratio of cellulose: stearic acid towards degree of esterification. The esterification reaction carried out in a heterogeneous system using n-butanol as solvent at 50 °C. The effect of reaction time on esterification degree is done by variating incubation time for 6, 12, 18, 24 and 30 hours. The influence of the mass ratio of cel

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Even, Uzi, Joshua Jortner, and Ziva Berkovitch-Yellin. "Electronic excitations of the free-base porphine–Ar van der Waals complex." Canadian Journal of Chemistry 63, no. 7 (1985): 2073–80. http://dx.doi.org/10.1139/v85-342.

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In this paper we report on the excited-state energetics of the two lowest-lying intravalence electronic excitations S0 → S1x and S0 → S1yof a large van der Waals complex, consisting of Ar bound to free-base porphine (H2P). H2P•Arn complexes were synthesized and interrogated by laser-induced fluorescence in seeded supersonic expansions of Ar and He/Ar. Diagnostic methods, which were based on the dependence of the intensity of the spectral features on the stagnation pressure and on spectroscopy in He(99%)/Ar(1%) mixtures, were utilized for the identification of the vibrationless electronic excit

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