Vacuum Column Research Articles

Toxicity of bioactive compounds from Halocnemum strobilaceum against A549 lung cancer cells

This study investigates the toxicity of bioactive compounds isolated from the halophytic plant Halocnemum strobilaceum against A549 lung cancer cells. Sequential extraction using petroleum ether, chloroform, and methanol yielded various fractions, with the petroleum ether extract demonstrating the highest cytotoxicity. Through bioassay-guided fractionation and isolation techniques, including vacuum liquid chromatography and column chromatography, three compounds were identified: (1) Di(2-ethylhexyl) phthalate, (2) isorhamnetin-3-glucoside, and (3) quercetin-3-glucoside. The cytotoxic effects of these compounds were assessed using the MTT assay, revealing significant toxicity on A549 cells, with quercetin-3-glucoside exhibiting 78% cytotoxicity and isorhamnetin-3-glucoside showing 69% cytotoxicity at a concentration of 100 μg/mL. These findings suggest that the toxic effects of H. strobilaceum may be attributed to the presence of bioactive compounds, such as flavonoids and polyphenols, known for their antioxidant and free-radical scavenging capabilities. This highlights the potential of H. strobilaceum as a source of novel anti-cancer agents, warranting further studies to elucidate the mechanisms of action and explore therapeutic applications.

Ultrasound-Assisted Extraction- and Liquid Chromatography-Based Method Development and Validation for Obtaining and Qualitative Determination of Apple Pomace Three Triterpene Acids using Analytical Quality by Design

Background: Apple pomace has garnered significant attention within the life sciences domain due to its underutilized status as a waste material from apple processing. It represents a cost-effective and abundant source of triterpene acids due to its multifunctional clinical, nutritional, and pharmaceutical benefits. Purpose: The present study aimed to develop and validate a new, selective, effective, robust and reproducible laboratory methodology based on extraction, purification and analytical procedures to obtain and determining three major triterpene acids – Ursolic acid (UA), Oleanolic acid (OA) and Betulinic acid (BA) into the dry extracted product from apple pomace. Method: A new, cost-efficient, rapid, selective and high-yield two-stage ultrasound-assisted extraction procedure was developed and the effect of critical parameters: ultrasonic power, extraction time, solvent volume, temperature, and the amount of raw material on the extraction process were investigated. The dry column vacuum chromatography technique was used for purification to remove unwanted non-polar and polar impurities from the target bioactive compounds; A new, effective, specific, sensitive, and rapid HPLC analytical procedure was developed using analytical quality by design (AQbD) approach and validated according to ICH guidelines. Conclusion: The method has a good accuracy (the mean recovery >95 %) and linearity (R2>0.999). The limit of quantitation (LOQ) is 0.0001 mg/mL for UA, 0.00005 mg/mL for OA and 0.000025 mg/mL for BA. The validation results confirm that the method is specific, precise and robust. The purity of the extracted and purified target product from apple pomace is not less than 93 %. The developed laboratory methodology is capable of being considered for industrial purposes and through the appropriate technology transfer process can be successfully transferred to the industrial scale.

SF1: A Standardised Fraction of Clinacanthus nutans That Inhibits the Stemness Properties of Cancer Stem-Like Cells Derived from Cervical Cancer

Cancer stem cells (CSCs) are a small population of tumour cells that are responsible for tumour initiation, metastases, recurrence, and resistance to conventional therapy. Hence, targeting CSCs is crucial in the fight against cancer. SF1, a standardised fraction from Clinacanthus nutans leaf extract, has been reported to exhibit potent and selective antineoplastic effects against cervical cancer cells. In this study, the potential of SF1 to inhibit the stemness of cervical cancer stem-like cells has been evaluated. SF1 extraction was carried out using the dry column vacuum chromatography technique. SiHa cell lines were cultured as spheres in CSC-conditioned medium (cervospheres), and the IC50 of SF1 against cervospheres was determined using the OZBlue Cell Viability Kit. The effects of SF1 on the cervosphere’s stemness markers, including CD49f, CK17, SOX2, OCT4, and NANOG, were assessed using a flow cytometry assay. Self-renewal inhibition and anti-tumorigenesis effects of SF1 in cervospheres were evaluated using a sphere formation assay and a xenograft mouse model. The present study shows that SF1 treatment at an IC50 of 17.07 µg/mL inhibited the proliferation, self-renewal, and tumorigenic capacity of SiHa cervospheres in vitro and in vivo. A decrease in the expressions of CK17, SOX2, CD49f, and OCT4 in cervical CSCs indicated that SF1’s inhibitory effects were also associated with the suppression of stemness markers. These results suggest that SF1 possesses an antitumor effect against cervical CSCs and may be regarded as a promising approach to the development of targeted anticancer agents for cervical cancer.

Karakterisasi Struktur Kumarin pada Akar Tumbuhan Langsat (Lansium domesticum Corr.)

Lansium plants produce not only terpenoids as the main constituent but also contain phenolics on the basis of phytochemical analysis. Unfortunately, there are still limited information about phenolic structures from this plants. This study was conducted to identify one of phenolic structures from chloroform fraction of Lansium domesticum root. The chloroform fraction was fractionated and purified by chromatographic techniques such as vacuum liquid chromatography (VLC) and column chromatography (CC) to obtain a coumarin. Additionally, the coumarin structure was characterized by 1H-NMR. The isolated coumarin showed a positive result for the phenolic test with FeCl3 5%. The 1H-NMR spectrum of isolated coumarin revealed chemical shifts at δH 7,60 (1H, d, J = 9,5 Hz), 6,92 (1H, s), 6,84 (1H, s), 6,27 (1H, d, J = 9,5 Hz), 6,14 (1H, s), and 3,95 (3H, s). Based on those results and comparison with literature data, it can be concluded that the isolated coumarin is iso-scopoletin (1)

Isolation, Characterisation and Corrosion Inhibition Evaluation of 1, 3, 5-Trimethoxymethylbenzenefrom Seeds Extract of Cola nitida on Mild Steel Surface in Hyhrochloric Acid Solution

Corrosion inhibition of Mild steel in 1 M hydrochloric acid solution by 1, 3, 5-trimethoxymethylbenzene (TMMB) isolated from seeds extract of Cola nitida was studied using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopic methods. TMMB was isolated from seeds of C. nitida by 72 hours maceration of the chopped seeds with dichloromethane. Filtered and concentrated extract was subjected to a combination of vacuum liquid, column and thin layer chromatographic techniques. The isolated compound was characterized using Fourier Transform Infra-Red (FT-IR) spectrophotometer, proton nuclear magnetic resonance (+H-NMR), C13 – NMR and DEPT-135 NMR spectrophotmeters. The results showed that the inhibition efficiency recorded by the weight loss method increased with the increase in TMMB concentration, but decreased with increasing temperature. The inhibition efficiencies recorded by the potentiodynamic polarization and electrochemical impedance spectroscopic methods also increased with increase in the concentration of TMMB. The calculated thermodynamic parameters showed that the corrosion inhibition process was endothermic and spontaneous in nature. Potentiodynamic polarization measurements confirmed that TMMB worked as a mixed – type inhibitor considering the value of Ecorrbeing less than 85 mV. Impedance measurement revealed that the charge transfer resistance offered by TMMB to the migration of aggressive ions on the surface of mild steel in acidic solution was enough to impede corrosion. The best line of fit to the adsorption of TMMB onto mild steel surface was found in Temkin isotherm. Formation of protective dense film on the steel surface in the presence of TMMB compared to the blank was revealed by scanning electron microscopy. The molecular structure of TMMB was optimized using Gausian 09 with density functional theory [DFT/B3LYP/6-31G (d,p)]. Physical adsorption has been proposed for the adsorption of TMMB onto mild steel surface.

Morphology Analysis of Hair Photoinduced and Chemical Damaged After Treatment with Sappan Wood (Caesalpinia sappan L.) Hair Tonic using SEM

Exposure to sunlight for a long time and repeatedly can also cause chemical and physical damage to human hair. Clinically, microscopic analysis using a scanning electron microscope (SEM) can assess hair damage by identifying the characteristic morphology of hair damage. This study aims to analyze the morphology of damaged hair chemically induced using 3% H2O2 and photoinduced UVB radiation before and after applying sappan wood (Caesalpinia sappan) hair tonic. The active ingredients used were ethanol extract, ethanol fraction, and chloroform-methanol fraction of C. sappan, which contains an antioxidant compound. Caesalpinia sappan simplicia was macerated using 96% ethanol and then partitioned using n-hexane. The ethanol fraction was then applied using vacuum column chromatography using chloroform : methanol (5 : 1) as eluent. The extracts and fractions were then formulated into hair tonic preparations. For SEM analysis, hair samples were coated with a sputter gold coater machine and divided into five treatments: undamaged hair, damaged hair with 3% H2O2 and UVB rays as a positive control, and treatment I, II, and III, in which the hair was damaged with 3% H2O2 and UVB rays respectively, then FI, FII, and FIII were applied, respectively (2000x magnification). Damaged hair with UVB induction shows moderate damage, and 3% H2O2 shows moderate to severe damage. The results in the treatment group show that the three hair tonics coated the hair cuticle, indicating an interaction with the hair fiber, and modified the cuticle by coating the cuticle.

Steroids Produced by Endophytic Fungus Lasiodiplodia Theobromae From Aglaia Argentea Blume and Their Cytotoxic Activity Against Hela Cervical Cancer Cell Lines

Three steroids, ergosterol (1), ergosterol peroxide (2) and stigmasterol (3) have been isolated from endophytic fungus, Lasiodiplodia theobromae derived from the root of Aglaia argentea Blume. The steroids were isolated by vacuum chromatography and column chromatography, the chemical structure was established following the analysis of 1D-NMR, 2D-NMR, IR, MS and by comparison with previously reported spectra data. Ergosterol peroxide (2) and stigmasterol (3) were reported for the first time isolated from Lasiodiplodia theobromae endophytic fungus. Cytotoxic activities of the compounds were tested with resazurin assay against HeLa cervical cancer cells, compound 2 displayed strongest cytotoxic activities against HeLa cervical cancer cells with IC50 values of 0.28 µM, while compounds 1 and 3 showed IC50 values of 0.34 µM and 27.32 µM, respectively

IMPROVEMENT OF FUEL OIL VACUUM RECTIFICATION PROCESS

Primary oil distillation units form the basis of all oil refineries; the quality and yield of the resulting fuel components, as well as raw materials for secondary and other oil refining processes, depend on their operation. Many Atmospheric Vacuum Tubing (AVT) plants are characterized by low recovery of heavy vacuum gas oil. Insufficient selection of heavy vacuum gas oil production leads to a high yield of vacuum residue - tar, which reduces the volume of oil refining in general.The article analyzes ways to improve the process of vacuum distillation of fuel oil at CDU/AVT primary oil distillation units, and searches for ways to increase the efficiency of already built CDU/AVT plants by increasing the selection of heavy vacuum gas oil. Options for technical re-equipment are presented to improve the technical and economic efficiency of atmospheric-vacuum tubing plants with the maximum use of the best achievements in this area and the maximum possible selection of heavy vacuum gas oil at existing primary oil distillation units. The schemes of intensification during vacuum distillation by the method of fractionation of hydrocarbon raw materials by exposing it to electromagnetic oscillations, by the method of gas oil cryolysis. Besides, the schemes of fuel oil distillation according to a two-column scheme and the rectification of half-tar in an additional vacuum column are considered. The main features in the technological design of the process, as well as the features of installation operation, are noted. The proposed schemes make it possible to obtain high-quality feedstock for catalytic cracking and hydrocracking with a high recovery of vacuum gas oil.

Novel Surface Treatment to Mitigate Fouling in Heat Exchangers and Process Equipment

The global impact of climate changes due to greenhouse gas emissions cannot be overemphasized. To combat this, engineers are striving to develop innovative enhancements for heat transfer and fouling reduction in process equipment as a pathway to reduce CO2 emissions. A novel surface application of Minimox® treatment, a water-based suspension of rare-earth oxides, is a promising solution. The self-protective alloy treatment, unlike a traditional continuous coating, has no measurable thickness, does not impose any operating temperature limits, protects from high temperature oxidation, and decreases surface energy and polarity that leads to low fouling and coking rates. Minimox can be applied by dipping or spraying to both external and internal surfaces, including non-conventional tubing shapes. A post-application curing at 400 °C for 1 h is needed to ensure maximum fouling mitigation efficacy. Laboratory tests conducted to simulate operating conditions in a Coker furnace show that the Minimox-treated tubes reduce coke formation by about 80% as compared to untreated tubes. In addition, adhesion of coke to the Minimox treated tubes was significantly lower than for the untreated tubes. Field data collected in refinery applications involving Coker furnace tubes and a vacuum column wash bed are promising, lending support the laboratory results.

The α-glucosidase inhibitory activity of avicularin and 4-O-methyl gallic acid isolated from Syzygium myrtifolium leaves

Diabetes Mellitus is the main cause of death on a global scale. In 2019, there were 463 million people with diabetes, and WHO predicts that by 2030, there will be 578 million. As an antidiabetic agent, α-glucosidase inhibitors are one of the methods employed to reduce the prevalence of diabetes. Diabetes is traditionally treated with Syzygium as a primary material, medicine, fruit, ornamental plant, and source of carpentry. This investigation aimed to examine the inhibitory effect of seven species of Syzygium against α-glucosidase enzyme using an in vitro assay and isolate active substances and ascertain their concentrations in each sample. As a solvent, ethanol was used in maceration to extract the substance. Afterward, the extract underwent a series of fractionation techniques, including liquid–liquid extraction, vacuum liquid chromatography, column chromatography, and preparative Thin Layer Chromatography (TLC) for purification and isolation. The compound's structures were elucidated using TLC, UV–Visible spectrophotometry, and nuclear magnetic resonance (NMR) spectroscopy. Based on concentrations of 100 and 200 µg/mL, Syzygium myrtifolium exhibited the most significant inhibitory effect, followed by other species of Syzygium. The proportion of ethyl acetate had the strongest activity (IC50 0.40 ± 0.02 µg/mL) contrasted to positive control acarbose (IC50 55.39 ± 0.67 g/mL) and quercitrin (IC50 6.47 ± 0.40 µg/mL). Avicularin and 4-O-methyl gallic acid were discovered in the ethyl acetate fraction of Syzygium myrtifolium with IC50 values of 17.05 ± 0.75 µg/mL and 25.19 ± 0.21 µg/mL, respectively. As α-glucosidase inhibitory, the results of this study indicate Syzygium myrtifolium can be used as a dietary supplement to manage hyperglycemia.

Antioxidant compounds and activity from the leaf of the mistletoe (Dendrophthoe pentandra (L.) Miq.) on Duku plant (Lansium domesticum Corr.)

Mistletoes or benalu in Indonesia is a parasitic plant that can live on a variety of hosts. In this study determined the antioxidant activity of mistletoes living on Duku ( Lansium domesticum Corr.) was Dendrophthoe pentandra (L.) Miq. The aim of the study determine antioxidant activity used n-hexane, ethyl acetate, and methanol water fractions, and determine the compound groups and the IC50 values. The research methods used were extraction by maceration, fractionation by liquid fractionation method, isolation by vacuum liquid chromatography (VLC) and column chromatography, and antioxidant activity test with DPPH. The results showed that the n-hexane and ethyl acetate fractions which had antioxidant activity and the methanol fraction were inactive. From the n-hexane fraction, the isolates NH.1 and NH.3 were obtained, the former of which belongs to terpenoids, while the latter belongs to flavonoids. From the ethyl acetate fraction, the isolate EA.3, which also belongs to flavonoids, was obtained. The isolate NH.1 has an IC50 value of 151.35 g/mL with weak antioxidant activity, while the isolate NH.3 has 96.64 g/mL, and EA.3 has 78.37 g/mL with moderate antioxidant activity.

Isolation of oleanolic acid from Clematis armandii for differentiation it from adulterants by HPTLC/HPLC

Clematis armandii has been used in many Chinese traditional patent medicines all over the world as a form of Caulis Clematidis Armandii. However, it has often been adulterated by Aristolochia manshuriensis, and Iodes vitiginea. A. manshuriensis must not be part of any herbal medicines because it contains aristolochic acid I, a nephrotoxin and potential carcinogen. The current pharmacopoeial methods have had limitation for differentiation of C. armandii from its adulterants. Thus, a specific, comprehensive, sensitive, and reproducible HPTLC/HPLC for quality control of C. armandii was proposed. Oleanolic acid from C. armandii has been isolated by vacuum liquid chromatography and column chromatography. The purified compound has been identified using Ultra Violet spectrophotometry (UV–Vis), Fourier Transform Infrared (FTIR), mass spectrometry (MS) and nuclear magnetic resonance (NMR) spectroscopy. Therefore, oleanolic acid should be detected for positive identification of Caulis Clematis Armandii. Minimum content of oleanolic acid can be evaluated by the validated HPTLC procedure proposed as well.

Novel Reactive Distillation Process for Cyclohexyl Acetate Production: Design, Optimization, and Control.

A side-reactor column (SRC) configuration, comprising a vacuum column coupled with atmospheric side reactors, is proposed to overcome the thermodynamic restriction in the esterification of cyclohexene with acetic acid to produce cyclohexyl acetate. Meantime, this configuration can avoid the utilization of the high-pressure steam and provide enough zone for catalyst loading. In order to obtain the minimum total annual cost (TAC), the process is optimized by a mixed-integer nonlinear programming optimization method based on the improved bat algorithm. The results indicate that the optimized SRC configuration saves about 44.81% of the TAC compared to the reactive distillation process. Based on the optimized SRC process, dynamic control is carried out. The dual-point temperature and temperature-composition control structures are proposed to reject throughput and feed composition disturbances. The dynamic performances demonstrate that the temperature-composition control structure is better in maintaining product purity.

Chromatographic separation of saponin glycosides from roots of Asparagus racemosus (Wild.) using a modified approach

AbstractAsparagus racemosus (Wild.) (Family: Liliaceae) is extensively used as lactogenic, and the presence of saponin glycosides was found to be responsible for the biological activity. The studies were performed to isolate saponin glycosides from bioactive n‐butanol fraction of methanolic extract prepared from Asparagus racemosus; through a combined application of alumina‐based vacuum column chromatography and silica gel‐based open column chromatography. The process yielded two steroidal saponins, and the comparative spectral studies of the purified saponins revealed them to be shatavarin‐IV and asparanin‐A. This modified and comparatively simple approach for the separation of shatavarin‐IV and asparanin‐A from the roots of Asparagus racemosus is the first report on the isolation of asparanin‐A from Asparagus racemosus using the conventional column chromatography method. The isolated compounds may serve as standards for ensuring the quality of raw materials.

Antibacterial activity of active fraction of sweet corn hair extract (zea mays f saccharata kornicke & werner) against methicillin resistant staphylococcus aureus (MRSA) growth

Methicillin-resistant Staphylococcus aureus (MRSA) is a Staphylococcus aureus bacterium that is resistant to methicillin-type antibiotics. This study aims to determine the antibacterial activity of the active fraction of sweet corn hair extract on the growth of Methicillin-Resistant Staphylococcus aureus (MRSA) bacteria. Extraction was carried out by the remuneration method in 70% ethanol. In fractionation, liquid vacuum column chromatography with n-hexane, ethyl acetate, and methanol solvents was used. The fraction with the largest clear zone of methanol (100%) is with a clear zone diameter of 0.752 cm. Testing the antibacterial activity of ethanol extract at concentrations of 10%, 15%, and 20% obtained by clear zone with an average of 1,013; 1,073; 1,159 cm and in the active fraction with an average of 0,703; 0.903; 1,004 cm. Ciprofloxacin 0.005% was used as a positive control and DMSO as a negative control. The results showed that ethanol extract and an active fraction of sweet corn hair (Zea mays f saccharata Kornicke & Werner) had antibacterial activity against Methicillin-Resistant Staphylococcus aureus (MRSA). One-way ANAVA test results showed that there were significant differences in providing antibacterial activity (p> 0.05) between ethanol extract and active fractions at concentrations of 10%, 15%, and 20%. Flavonoid compounds, alkaloids, saponins, tannins, and triterpenoids in the active fraction of corn hair have antibacterial activity against MRSA bacteria.

Antioxidant, Antimicrobial, and Antiplasmodial Activities of Sonchus arvensis L. Leaf Ethyl Acetate Fractions

Infection is one of the health problems and a disease that mainly causes death. Malaria is a parasitic infection that is transmitted through the Anopheles sp. The female then causes infection and besides malaria, other contaminants that caused infection are bacteria such as Escherichia coli and Staphylococcus aureus. This study aims to determine the antioxidant, antimicrobial, and antiplasmodial activity of Sonchus arvensis L. ethyl acetate fractions. In vitro antiplasmodial activity was carried out by Rieckman methods against Plasmodium falciparum strain 3D7. In vitro antioxidant activity was conducted by Prieto method against (1,1-diphenyl-2-picrylhydrazyl (DPPH). Then antimicrobial activity was performed using well diffusion method against Escherichia coli and Staphylococcus aureus. Maceration of S. arvensis L. dried leaves used n-hexane and ethyl acetate successively. Then the ethyl acetate extract was fractionated by vacuum column chromatography, using n-hexane and ethyl acetate as mobile phases. There are five fraction groups based on thin-layer chromatography (TLC) analysis. The IC50 of antioxidant and antiplasmodial activity showed that fraction IV was the lowest value and categorized as active for antioxidant (IC50=22.56 μg/mL), for antiplasmodial (IC50=12.07 μg/mL). Fraction IV also had antimicrobial activity, with diameter of inhibition zone (DIZ) of 19.22 mm against Escherichia coli and 17.167 mm against Staphylococcus aureus.

A methodology of coupled modeling of vacuum blocks of industrial installations

The article presents the methodology of coupled modeling of the main blocks of a chemical-technological system operating under vacuum. The system analysis of vacuum blocks is carried out and the basic rules of technological calculation are formed, in which the evacuated technological object and the vacuum overhead system are considered as a single system with inter-dependent elements. The presented methodology was applied when calculating the vacuum block of the primary oil refining process of a mini-refinery working on fuel oil, as a result of which an integrative characteristic of the block was compiled, which takes into account the mutual influence of the vacuum system and the technological object on the residual pressure at the top of the vacuum column. The adequacy of the developed model was ascertained by comparing with industrial research data. In line with the proposed methodology, numerical experiments were carried out accordingly in which the temperature of the service liquid being fed into the pump was changed. The results of the calculations showed that, achieving the given project Pressure under the current block component setup (P= 40 mm Hg) was not possible as a reason of the increased resistance in the shell side of the condenser.

ISOLATION, IDENTIFICATION AND BIOASSAY OF FLAVONOIDS FROM Bouea macrophylla GRIFF.

Bouea macrophylla Griff., a species belonging to the Anacardiaceae family is a flowering plant native to Southeast Asia and also known as kundang, kundang daun besar, and setar in Malaysia. The fruit can be eaten raw or as a pickle, while the young leaves can be consumed as salads. It has been claimed to be able to accelerate wound healing, prevent cancer, reduce the risk of stroke, and be good for blood circulation. The previous study on the plant from the same genus, known as B. oppositofolia has shown the presence of various. The present study was designed to isolate and elucidate flavonoids from this plant. The twig extract of kundang was purified by using several chromatographic techniques including Vacuum Liquid Chromatography (VLC), Column Chromatography (CC), and preparative-Thin Layer Chromatography (pTLC). The structures of isolated compounds were characterized by using spectroscopic methods including Nuclear Magnetic Resonance (NMR), infrared (IR), and ultraviolet (UV) spectral data, as well as comparison with the data reported in the literature. Five flavonoids were isolated and purified from the twigs of B. macrophylla which includes one flavanonol known as garbanzol; one flavonol which is resokaempferol; one flavandiol characterized as catechin; and two flavandiol known as mollisacacidin and guibourtacacidin. The results of the glucose uptake experiment indicated that the extract and compounds tested affected the glucose uptake rate of the insulin-resistant C2C12 cell line as compared to the standard. This is the first report describing the elucidation of the stated compounds from B. macrophylla as well as its glucose uptake study.

Isolation and Identification of an Alkaloid Compound from Bebuas Leaves (Premna serratifolia) as an Anti-Inflammatory in White Rats (Rattus norvegicus)

Bebuas (Premna serratifolia) traditionally is used by Malay people as a traditional medicine to restore health. This indicates it contains chemicals that potentially have an anti-inflammatory activity. The results of phytochemical screening showed that the ethanol extract contains phenolics, alkaloids, flavonoids, steroids and saponins. Meanwhile, hexane extract only contains steroids. Anti-inflammatory activity evaluation on crude extracts showed that the ethanol extract was more active than the hexane extract. Therefore, the isolation step was continued to ethanol extract with the targeted compound was an alkaloid. Extraction was conducted by using acid-base and partition techniques to give the alkaloids fraction (EaBW). EaBW is then further separated by liquid vacuum column technique using gradual polarity elution, with eluent of ethyl acetate (Ea) - methanol and obtained 5 fractions. The isolate was obtained from F.3. The isolate showed it had anti-inflammatory activity with ED50 = 5.45 mg/KgBW. The UV-Vis and FT-IR spectra patterns of the isolate have similarities with ciprofloxacin as well as its physical characteristics which are hygroscopic yellowish crystal, and fluorescence property. Therefore, the isolated compound is thought to have a similar structure to ciprofloxacin.

Development of a Simple, Rapid, and Economical Method for Extraction and Isolation of 3-O-acetyl-11-keto-β-boswellic Acid from the Resins of Boswellia serrata

Background: Boswellia serrata is an important species from the Boswellia genus, which contains a variety of significant phytoconstituents. Numerous applications of the B. Serrata have been mentioned in the literature of the Indian ayurvedic system. Researchers reported abundant pharmacological activities of B. Serrata resins extract. The extract produces synergistic pharmacological activity due to the presence of the Boswellia acids and their derivatives. Among all Boswellia acids, 3-O-acetyl-11-keto-β-boswellic acid (AKBA) was found to be more potent. Traditionally, column chromatography was used for the isolation of AKBA from raw material as well as extracts. However, the column chromatography method was monotonous and timeconsuming. Objective: The main goal of the research was to develop a new, simple, rapid, and reproducible method for the isolation of AKBA from the resin extract of B. Serrata. Methods: The extraction and isolation of AKBA involved extraction of resins using hydroalcoholic solution followed by alkali treatment. The alkali solution was further treated with acid to precipitate the crude AKBA. Results: The obtained crude AKBA was subjected to the dry column vacuum chromatography to separate and yield the high purity of the AKBA. The purity of the isolated AKBA was established by TLC & UHPLC. Spectral characterization of the isolated compound was performed by employing IR, MS, and NMR. Conclusion: The proposed method can be used to isolate AKBA from resin extract of B. Serrata. Some modifications in this method lead to the large-scale production of highly pure AKBA for various pharmaceutical applications.