Dichloromethane Extract Research Articles

Antifungal Potential of Carnosic Acid from Salvia somalensis against Phytopathogenic Fungi

The aims of the present study were (i) to characterize the dichloromethane extract of the fresh aerial parts of S. somalensis, cultivated in Liguria (Italy), (ii) to quantify carnosic acid production and (iii) to find an eco-friendly alternative approach to control diseases caused by phytopathogenic fungi. The phytochemical investigation yielded several known terpenoids, as well as a diterpene, 4α,9α-epoxy-2H-dibenzo[a,d]cyclohepten-7(5H)-one, not previously described as a plant metabolite before. The results showed a noteworthy quantity of carnosic acid (113.90 µg/mg of dried extract). The potential antifungal activity of the plant surface extract and carnosic acid against five phytopathogenic fungi (Colletotrichum coccodes, Fusarium oxysporum, Sclerotinia sclerotiorum, Botrytis cinerea and Rhizoctonia solani) was considered. A complete inhibition of C. coccodes, S. sclerotiorum and R. solani mycelium growth was observed by carnosic acid at 500 µg/mL. High inhibition values were observed against B. cinerea and F. oxysporum compared to reference active ingredients. Four different B. cinerea strains exhibited a pronounced sensitivity to carnosic acid, as well as those originating from agricultural crop scenarios where a high load of active ingredient for gray mold control was historically adopted. Additionally, the formation and development of the germinative tube in B. cinerea were greatly slowed down.

Evaluation of destruction of bacterial membrane structure associated with anti-quorum sensing and ant-diabetic activity of Cyperus esculentus extract

Recently, there has been an increasing demand for medicinal plants to control diseases for good health and well-being, as primary health facilities are inadequate in certain populations to cure infections. Since synthetic medicines are toxic to humans and other animals, the present research is thus focused on using traditional medicine for treating various ailments as they are harmless. Based on the above facts, the current study was conducted to assay the antimicrobial, anti-diabetic, anti-cholinesterase, anti-oxidant, anti-quorum sensing, and anti-antibiotic resistance modifying effect of extracts of Cyperus esculentus. This study found 37 and 30 chemicals in butanol and dichloromethane (DCM) extracts using a gas chromatograph mass spectrophotometer (GC-MS). Most active compounds identified were benzofuran, 2,3-dihydro-, 1,2,3-benzenetriol, 3-bornanone, oxime and oleic acid by extracts of butanol whereas dichloromethane extracted three major active compounds (2,3-dihydro-3,5-dihydroxy-, 4H-pyran-4-one 3-deoxy-d-mannoic lactone and 5-hydroxymethylfurfural). Both dichloromethane and butanol extracts showed the highest antimicrobial activity. Compared to aqueous extracts, dichloromethane, and butanol showed excellent anti-diabetic anti-cholinesterase activities and inhibited virulence factors regulated by quorum sensing (QS). Anti-oxidants increased in solvent extracts (DCM and butanol) compared to aqueous extracts. Results of scanning electron microscope (SEM) and Fourier Transmission Infrared (FTIR) indicated damage to the cell membrane of S. aureus by the formation of pits and breakage in functional groups exposed to the extracts of butanol and dichloromethane compared to aqueous extracts. The above results confirmed that C. esculentus can be an alternative medicine for treating diseases.

Elucidating the antimalarial activity of pityriacitrin isolated from Strophanthus hispidus (DC) whole plant extract: A detailed experimental and in-silico investigation

Malaria disease has contributed significantly to the increased mortality rate of children and pregnant mothers in Africa. This study isolated chemical compound from the dichloromethane extract of Strophanthus hispidus, evaluated its antimalarial activity in vivo, carried out molecular docking, molecular dynamics simulation and quantum chemical calculations to elucidate its possible mechanism of action in parasitized mice. The dichloromethane extract was subjected to various chromatographic separation methods to afford pityriacitrin. The antimalarial activity of the isolate was evaluated using curative model. Molecular docking and 100 ns Molecular dynamics simulation was performed against plasmepsin II and plasmodium falciparum dihydrofolate reductase-thymidylate synthase and density functional theory calculations were performed using BL3YP at 6–31 G basis set. The results revealed pityriacitrin as a good antimalarial candidate with 71, 75 and 83 % parasite clearance at 5, 10 and 20 mg/kg. The in silico studies revealed pityriacitrin elicited considerably high binding affinity against the selected enzymes. The RMSD, RMSF and contact plots showed that pityriacitrin exhibited stability throughout the 100 ns simulation period. The quantum chemical properties calculated showed that pityriacitrin demonstrated better drug like properties in water compared to other medium. Our findings suggest extensive in vitro investigation into the inhibitory property of pityriacitrin against malaria enzymes.

Cytotoxic activity of dichloromethane extract of soursop leaf (Annona muricata L.) against cancer

Cytotoxic activity of dichloromethane extract of soursop leaf (Annona muricata L.) against cancer

Antioxidant ativity of dichloromethane extract from cocoa pod husk (Theobroma cacao L.)

Theobroma cacao L. is a plant that is reported to have strong antioxidant potential. A study was carried out to determine the antioxidant activity of dichloromethane extract of cocoa pod husk using 1,1-diphenyl-2-picrylhydrazyl (DPPH). The cocoa pod husk was macerated using n-hexane, ammonia-dichloromethane, and methanol. The TCD extract of cocoa pod husk showed the lowest IC50 value of 14.59 ± 0.54 ppm based on the DPPH inhibition assay. The dichloromethane extract was isolated by gravity column chromatography with Silica gel G60 as the stationary phase and n-hexane: ethyl acetate as the mobile phase (gradient elution system). Fractions with identical staining patterns were combined into six fractions (TCD 1-TCD 6). The TCD 6 showed the lowest IC50 value of 127.05 ± 0.54 ppm according to the DPPH inhibition assay. Based on the TLC results, TCD 4 was further isolated and four fractions (TCD 4.1 to TCD 4.4) were obtained. The TCD 4.4 had the lowest IC50 value (38.66 ± 0.96 ppm). The TCD extract showed the presence of the dominant compound, γ-sitosterol, as determined by GC-MS analysis.

Ethnobotanical study and antimicrobial activity of Galphimia glauca Cav.

Galphimia glauca (Malpighiaceae) has been widely used in traditional Mexican medicine. This study is the first to report on the root´s antimicrobial activity based on traditional knowledge from Xochipala, Guerrero. Two preliminary interviews were conducted with key informants. Final surveys were then prepared and distributed in three schools in the community. The information was organized in a hierarchical list according to importance and frequency of use to apply the Friedman index. The antibacterial and antifungal activity of the extracts were evaluated using the double serial dilution method in agar. Four main plants were reported for the treatment of skin pimples. G. glauca or "Tespancolole" was the most frequently used (54.9 %), followed by Hintonia latifolia or "Copalchi" (27.4 %), Dorstenia drakena or "Gallito" (0.87 %), and Ziziphus amole or "Corongoro" (7.83 %). The antimicrobial effect of the methanolic and dichloromethane extracts on Trichophyton. rubrum and T. menthagrophytes was observed at a concentration of 4 µg/mL. Growth inhibition was higher when compared to miconazole, the reference drug used, which was evaluated at 8 µg/mL. This study supports the traditional knowledge of the community of Xochipala, Guerrero that uses the root of G. glauca, showing antimicrobial activity for the treatment of dermal lesions that may be due to infectious agents such as Staphylococcus. aureus, T. rubrum, and T.menthagrophytes.

Phytochemical Analysis and Assessment of Antimicrobial, Genotoxic, and Cytotoxic Properties in Extracts Derived from Alyxia linearis Markgr. (Apocynaceae), a Philippine Endemic Species

The Apocynaceae is a known plant family that is rich in alkaloid, and many of its species were reported to have medicinal significance. An endemic plant from the Philippines, Alyxia linearis Markgr. – which has not yet been investigated for its phytochemistry nor bioactivity – is reported here. This study aims to characterize the phytochemical compounds and evaluate the antimicrobial, cytotoxic, and genotoxic activities of A. linearis. The hexane, dichloromethane, and methanol extracts from the roots, twigs, and leaves were subjected to different tests. The antimicrobial activity of the phytoconstituents was investigated against four bacteria (S. aureus, P. aeruginosa, E. faecalis, and E. coli) and two fungi (Penicillum sp. and A. niger). The antimicrobial analysis showed that among the nine extracts, only two extracts exhibited a partial inhibitory activity against those Gram-positive bacteria used, and only one extract exhibited a fungicidal activity. ATD inhibited the growth of both S. aureus and E. faecalis, whereas ARM inhibited only the growth of E. faecalis. Among the nine extracts, only ARD inhibited Penicillum growth. The genotoxicity of the extracts was tested using Allium cepa assay. The semipolar and polar extracts of A. linearis were all genotoxic except 1 ppm ALM. Cytotoxicity of the ALD extract was evaluated using an MTT assay on human dermal fibroblasts neonatal (HDFn). The assessment of cytotoxicity of ALD against HDFn showed an IC50 below 12.5 μg/mL as compared to the IC50 of the doxorubicin, which is 2.89 μg/mL. This indicates that the ALD extract is moderately cytotoxic as compared with doxorubicin. The phytochemical constituents of the A. linearis extracts were classified mainly as phenols, flavonoids, steroids, and triterpenes – with a slight occurrence of coumarins, anthraquinones, and anthrones.

In vitro Biological Activities and Fatty Acid Composition Analysis of Musa paradisiaca L. Inflorescence

Musa paradisiaca L. is native to tropical climate. Inflorescences of this herb are used as a treatment of digestive distresses. This study involved analysis of the fatty acid contents and some in-vitro pharmacological activities of the inflorescence. Modified Kupchan method was used for extraction in solvents of varying polarity. Fatty acid content analysis was conducted on n-hexane extract; Palmitoleic acid was found to be the highest in proportion in both bound (34.40%) and free (37.80%) forms. n-hexane and dichloromethane extracts exhibited cytotoxicity against carcinoma cell (HeLa cell line). Ethyl acetate extract possessed significant amount of free radical (DPPH) scavenging capability (IC50 = 66.92±0.3065 μg/ml). The n-Hexane extract was found to be rich in phenolics (26.40 ± 0.033 mg GE/g) and flavonoids (83.40± 0.099 mg QE/g). Dichloromethane fraction exhibited the highest zone of inhibition (15 mm) against the bacterium Shigella dysenteriae. Ethyl acetate fraction showed blood clot lysis activity of 29.35% (standard streptokinase 63.05%). Presence of potent bioactivities imply the prospects of this sample as a source of lead compounds for effective formulations against chronic digestive diseases. Dhaka Univ. J. Pharm. Sci. 23(1): 69-76, 2024 (June)

Phytochemical characterization of Thevetia peruviana (lucky nut) bark extracts by GC-MS analysis, along with evaluation of its biological activities, and molecular docking study

Thevetia peruviana (T. peruviana; Family: Apocynaceae), commonly known as Lucky Nut, is a traditionally and medicinally important plant, and the barks of the plant are traditionally used as anti-inflammatory, anti-diabetic, and antibacterial remedies. Thus, this study aimed to evaluate bioactive phytochemicals and in-vitro biological activities from the bark of T. peruviana using methanolic (TPM) and dichloromethane (TPD) extracts. The GC-MS analysis showed the presence of 54 and 39 bioactive compounds in TPM and TPD, respectively. The TPM extract has a higher level of total polyphenolic contents (TPC: 70.89 ± 1.08 and 51.07 ± 0.78 mg GAE/g extracts, while TFC: 56.89 ± 1.16 and 44.12 ± 1.76 Qu.E/g extracts for TPM and TPD, respectively). Herein, the results of antioxidant activities were also found in correlation with the total polyphenolic contents i.e., depicting the higher antioxidant potential of TPM compared to TPD. The significant inhibitory activities of extracts were observed against tyrosinase (TPM; 59.43 ± 2.87 %, TPD; 53.43 ± 2.65 %), lipoxygenase (TPM; 77.1 ± 1.2 %, TPD; 59.3 ± 0.1 %), and α-glucosidase (TPM; 71.32 ± 2.44 %, TPD; 67.86 ± 3.011 %). Furthermore, in comparison to co-amoxiclave, the antibacterial property against five bacterial strains was significant assayed. The compounds obtained through GC-MS analysis were subjected to in-silico molecular docking studies, and the phyto-constituents with maximum binding scores were then subjected to ADME analysis. The results of in-silico studies revealed that the binding affinity of several phyto-constituents was even greater than that of the standard inhibitory ligands. ADME analysis showed bioavailability radars of phyto-constituents having maximum docking scores in molecular docking. The results of this study indicated that T. peruviana has bioactive phytochemicals and therapeutic potential and may provide a basis for treating metabolic disorders (inflammatory diseases like rheumatism and diabetes), bacterial infections, and skin-related problems.

GC-MS analysis of three Diospyros species and evaluation of its in vitro rat intestinal a-glucosidase and FRAP activity

Abstract. Hariyanto NA, Ramadhan R, Raharjo Y, Firdaus YFH, Kurnia IT, Lestari DA, Suwandari S, Mahmuda NF, Nathanael J, Phontree K, Phuwapraisirisan P, Riyadi L, Rahman A, Abdulgani N. 2024. GC-MS analysis of three Diospyros species and evaluation of its in vitro rat intestinal a-glucosidase and FRAP activity. Biodiversitas 25: 2442-2453. The vast diversity of natural products has long been recognized as a potentially valuable source of bioactive compounds derived from nature. The Diospyros species, belonging to the Ebenaceae family, thrive in tropical forest regions and have been traditionally used for treating various disorders such as ischemic stroke, hypertension, and infectious diseases. This research aims to assess the phytochemical constituents, rat intestinal a-glucosidase, and Ferric-Reducing Antioxidant Power (FRAP) of non-polar (n-hexane) and semi-polar (dichloromethane) extracts from three Diospyros species, i.e., Diospyros buxifolia (Blume) Hiern; Diospyros celebica Bakh.; Diospyros confertiflora (Hiern) Bakh). Gas Chromatography-Mass Spectrometry (GC-MS) analysis identified numerous bioactive secondary metabolites in the extracts. The study revealed that the semi-polar extracts of D. buxifolia exhibited potent rat intestinal a-glucosidase inhibitory activities, with an IC50 value of 33.31±3.23 ug/mL. The IC50 of acarbose as a positive control was 6.31±0.31 ug/mL. The FRAP test demonstrated that the non-polar and semi-polar leaf extracts of the three Diospyros species from East Kalimantan are potential sources of natural antioxidants, with the IC50 in the range of 6.48±0.38 umol Fe/g - 11.35±0.16 umol Fe/g. The results of this study confirm the therapeutic properties of leaf extracts derived from 3 Diospyros species, which align with their traditional medicinal use.

Lippia multiflora Leaves Extracts Enhance Cefotaxime Bactericidal Effects and Quench the Biofilm Formation in Methicillin-Resistant Staphylococcus aureus ATCC 43300.

The emergence of the multidrug-resistant bacteria strain has become a global world crisis. This study was designed to evaluate the antibiofilm and synergistic effects of Lippia multiflora leaf extracts on the activity of cefotaxime against the methicillin-resistant Staphylococcus aureus (S. aureus). The synergistic effect of methanol and dichloromethane extracts on the bactericidal activity of cefotaxime was determined by using the antibiotic susceptibility test on agar medium. The antibiofilm activity of the extracts was measured by using the crystal violet method. The antioxidant potential of the extracts was assessed by using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Ferric Reduction Activity Potential (FRAP) methods. The main secondary metabolites groups were analyzed by using different standard analytical tests. The total phenolics and total flavonoids were quantified spectrophotometrically. The methanol extract (final concentration of 100 μg/ml) inhibited the formation of bacterial biofilm more than salicylic acid (p<0.05). All extracts combined with cefotaxime (20 μg and 200 μg) showed good synergistic bactericidal effect on S. aureus with inhibitory diameters of up to 40 mm. The methanol extract showed higher total phenolics (462.20±10.90 mg EAG/g) and total flavonoids (26.20±0.20 mg EQ/g) contents than the dichloromethane extract (96.70±1.70 mg EAG/g and 8.00±1.20 mg EQ/g). Moreover, the methanol extract showed a higher FRAP reducing power (353.6±4.17 mmol EQ/g) than the dichloromethane extract (385.3±7.01 mmol EQ/g). Qualitative phytochemical analysis showed the presence of tannins, flavonoids, terpenes and sterols in both extracts. These data showed that L. multiflora leaves contain effective antibacterial phytomolecules for combating bacterial resistance.

Cytotoxicity and antioxidant potential of dichloromethane and ethyl acetate extracts of Morinda morindoïdes leaves

The incidence of cancer and related mortality are on the rise worldwide, and this requires the search for new plant-based medicines. In this study, the antioxidant potential and cytotoxic activity against HCT-116 cell line were evaluated. Dichloromethane and ethyl acetate extracts of M. morindoïdes were prepared by maceration and evaluated for some biological properties. Cytotoxicity was assessed according to MTS method on the cancer line HCT-116 (colorectal carcinoma) using doxorubicin as reference. Antioxidant potential was carried out by DPPH and ABTS tests. Tri-phytochemistry was carried out from coloring and precipitation tests. On HCT-116 cell line, extracts demonstrated dose-response activity. The lowest IC50 value was obtained with the acetate extract with an IC50= 16.38 ± 0.2 µg/mL. IC50 values for antioxidant activities were evaluated at 39.70 ± 1.7 µg/mL and at 57.65 ± 4.3µg/mL by DPPH and ABTS test respectilly. Finally, phytochemical screening showed presence of polyphenols, flavonoids and quinone. M. morindoides ethyl acetate extract showed the best cytotoxicity and antioxidant activities. Therefore, it should be an interesting source for discovery of new compounds for colorectal cancer treatment. Keywords: cytotoxicity, cancer cells, antioxidant, Morinda morindoides.

Antiviral and cytotoxic activities and chemical profiles of two species of Abies nordmanniana from Türkiye.

Abies is an important genus of the family Pinaceae, with about 50 species found in the highlands of Asia, Europe, North Africa, and North and Central America. The principal aim of the present work was to investigate the chemical content and biological potential of the resin and cone from Abies nordmanniana subsp. bornmulleriana and Abies nordmanniana subsp. equi-trojani, respectively. The flavonoid and phenolic contents of the resin and cones were evaluated using liquid chromatography-high resolution mass spectrometry (LC-HRMS). Additionally, the essential oil and fatty acid compositions were analyzed using gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ionization detector (GC-FID), respectively. Cytotoxicity of the extracts and essential oils were screened against certain cancer cell lines, namely, human prostate adenocarcinoma cell line (PC3), human lung adenocarcinoma cell line (A549), human pancreatic cancer cell line (PANC-1), human hepatocellular carcinoma cell line (HepG2), human breast cancer cell line (MDA-MB231), and normal human lung fibroblast cell line (CCD-34-LU), with MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide] assay. According to the MTT results, hexane extracts of both cone (CH) and resin (RH), ethanol-water (CEW), dichloromethane (CD), and acetone (CA) extracts of the cone mostly inflict cytotoxicity in HepG2 cell line. Antiviral activities of Abies nordmanniana subsp. extracts at doses of 5 μg/g and 10 μg/g were also evaluated in ovo for their virucidal activity against avian coronavirus. Abies nordmanniana subsp. extracts exhibited concentration-dependent antiviral activity on specific pathogen-free embryonated chicken eggs. Significantly, cone acetone extract (CA), cone ethanol extract (CE), and cone dichloromethane extract (CD) of Abies nordmanniana subsp. exhibited strong inhibition of the virus at a concentration of 10 μg/g. The most potent virucidal activity was observed with ethanol-water extract of conifer form (CEW). According to these results, it was proved that Abies nordmanniana species could be a potential, sustainable, and renewable drug source, especially considering the impressive antiviral and significant cytotoxic activity potentials.

Assessment of the Phytotoxicity and Antifeedant Properties of Aristolochia bracteolata Lamk. Leaf Extracts and their Derivatives against the Spotted Bollworm, [Eariasvittella (Fab.)], (Lepidoptera: Noctuidae)

The phytopesticidal effects of various solvent crude extracts and isolated fractions from the leaves of Aristolochia bracteolata, which were tested for their antifeedant and larvicidal activities on the fourth instar larvae of the shoot and fruit of Earias vittella.The antifeedant and larvicidal activities were performed by fruit disc no-choice methods at 0.625, 1.25, 2.5, and 5% and 125, 250, 500, and 1,000 ppm concentrations for crude and fractions, respectively. The dichloromethane (DCM) extract of A. bracteolata exhibited the maximum antifeedant (61.10%) and larvicidal (65.33%) activities at 5% concentration against E. vittella, followed by hexane (44.93%), acetone (40.40%) and aqueous (22.25%) extracts. It was subjected to fractionation using silica gel column chromatography with different combinations of hexane and ethyl acetate used as the mobile phase. Among the six fractions obtained, fraction 6 showed the maximum antifeedant (78.32%) and larvicidal (81.77%) activities against E. vittella at a 1000 ppm concentration. The preliminary phytochemical analysis of the plant also showed alkaloids, anthroquinones, diterpenoids, flavonoids, glycosides, polyphenols, saponins, steroids, and tannins in the extract. A. bracteolata leaves could be complemented with an eco-friendly pesticide/insecticide for an integrated pest management strategy.

Bioactive compounds from dichloromethane extract of Artemisia rupestris L. alleviates CCl4/ConA-induced acute liver injury by inhibiting PI3K-AKT pathway

Ethnopharmacological relevanceArtemisia rupestris L. (AR) is a traditional medicinal herb commonly used in the Uyghurs and Kazakhs; it was first documented in the Supplement to Compendium of Materia Medica written by Zhao Xuemin in the Qing Dynasty of China and is used clinically to treat colds, hepatitis, and allergic diseases. Aim of the studyThe material basis and mechanisms of AR in acute liver injury (ALI) remain unclear. The purpose of this study was to reveal the possible active components involved in liver protection in AR and to preliminarily explore their pharmacological mechanisms. Materials and methodsThe chemical composition of the ethanolic extract (ARA) was identified by UPLC-Q-Exactive-MS/MS and confirmed by 32 reference standards. The pharmacodynamic results were utilized to screen the active part within the ARA that contribute to the amelioration of CCl4/ConA-induced ALI. The main active components and core targets were predicted by network pharmacology and verified by molecular docking combined with qPCR and Western blotting. ResultsA total of 131 chemical components were identified in the ARA. The extraction parts of ARA had different therapeutic effects on ALI, among which the dichloromethane extract (ARA-D), which might constitute the main effective fraction of ARA, had significant anti-ALI effects. The network pharmacology results showed that targets including PIK3R1, AKT1, and EGFR, as well as 7 compounds, such as artemetin, vitexicarpin and rupestonic acid may play pivotal roles in treating CCl4/ConA-induced ALI. GO and KEGG pathway enrichment analyses revealed that the PI3K-AKT signaling pathway was the main pathway involved. In each model, ARA-D dose-dependently reduced the increase in ALT levels. High-dose ARA-D markedly decreased ALT activity from 196.79 ± 24.82 to 66.37 ± 16.19 U/L in the CCl4 model group and from 178.00 ± 28.39 to 50.67 ± 7.39 U/L in the ConA model group. Further studies revealed that ARA-D significantly inhibited TNF-α, IL-1β, and IL-6 expression and inhibited the protein expression of PI3K, p-PI3K, and p-AKT in CCl4/ConA-induced ALI. ConclusionARA-D exhibits protective effects against ALI induced by CCl4/ConA, potentially through inhibition of the PI3K-AKT signaling pathway. These findings may help to determine the material basis and mechanisms of action of ARA-D for liver protection and provide ideas for future comprehensive studies.

Anticancer Activity of Sargassum fluitans Extracts in Different Cancer Cells.

The arrival of large quantities of Sargassum in the Mexican Caribbean Sea has generated major environmental, health and economic problems. Although Sargassum has been used in the generation of some commercial products, few studies have described its possible applications as a source of compounds with anticancer activity. This study aimed to evaluate the antiproliferative effects of different Sargassum extracts on various cancer cell lines. Furthermore, LC/QTOF-MS was used to identify the compounds related to the antiproliferative effect. First, determination of the seaweed was performed, and dichloromethane, chloroform and methanol extracts were obtained. The extracts were evaluated for their antiproliferative effects by MTT in breast (MDAMB- 231 and MCF-7), prostate (DU-145), lung (A549) and cervical (SiHa) cancer cell lines. Finally, LC/QTOFMS identified the compounds related to the antiproliferative effect. The authentication showed Sargassum fluitans as the predominant species. The extracts of dichloromethane and chloroform showed an antiproliferative effect. Interestingly, the fractionation of the chloroform extract showed two fractions (FC1 and FC2) with antiproliferative activity in MDA-MB-231, SiHa and A549 cancer cell lines. On the other hand, three fractions of dichloromethane extract (FD1, FD4 and FD5) also showed antiproliferative effects in the MDA-MB-231, MCF-7, SiHa and DU-145 cancer cell lines. Furthermore, LC/QTOF-MS revealed the presence of eight major compounds in FC2. Three compounds with evidence of anticancer activity were identified (D-linalool-3-glucoside, (3R,4S,6E,10Z)-3,4,7,11-tetramethyl-6,10-tridecadienal and alpha-tocotrienol). These findings showed that Sargassum fluitans extracts are a possible source of therapeutic agents against cancer and could act as scaffolds for new drug discovery.

Toxicity of mangrove plant extract (Rhizophora stylosa Griff.) using the brine shrimp lethality test method

Abstract Rhizophora stylosa is a type of mangrove that is very abundant on the coast of Indonesia and contains many active compounds. So far, research on the toxicity of bark, leaf and flower extracts of R. stylosa has not been reported. This research aims to determine the toxic effects of n-hexane, dichloromethane and methanol extracts from the bark, leaves and flowers of R. stylosa through initial screening using the brine shrimp lethality test (BSLT) method and to determine the components contained in the plant. Toxicity testing using the BSLT method is widely used as the first step in extract screening because it is fast, cheap and easy to do. The results obtained were that all R. stylosa plant extracts were classified as non-toxic except for the dichloromethane extract of bark with an LC50 value of 947.76 ppm (toxic). The results of GC-MS analysis show that the compound that has the highest area is lupeol compound.

Size prediction of drug-loaded Polymeric (PLGA) microparticles prepared by microfluidics

Drug-loaded poly (lactic-co-glycolic acid) (PLGA) microparticles with ex-act control over size and homogeneity were created using a glass microfluidic cross-junction droplet generator. A numerical simulation based on the volume-of-fluid (VOF) method is used to study the behavior of two immiscible fluids that are injected into the microdevice: hydrophobic drug and (PLGA) in dichloromethane (DCM) serving as the dispersed phase and aqueous solution of poly (vinyl alcohol) (PVA) as the continuous phase. The simulation predicts the created emulsion droplet size regulation by adjusting the phase's flow rate. In a procedure known as droplet shrinking, dichloromethane extraction, and evaporation took place to further transform the monodisperse emulsion into PLGA microparticles. A numerical relationship is also given for the variations in the volume of droplets during shrinkage. The numerical results were consistent with the experiments. To further illustrate this technique's ability to manufacture designed microspheres with the least amount of repeated experiments, as well as the importance of the droplet microfluidic approach in terms of regulating diameter and monodispersity, opioid antagonist naltrexone is loaded in PLGA microspheres. According to the findings, integrating a versatile microfluidic approach with numerical methodologies enables the development of more reliable and reproducible drug delivery systems.

Antimicrobial activities from mangrove extract (Rhizophora stylosa)

Abstract Mangrove, Indonesian locals have long used the several members of the Rhizophora genus as medicine. This study set out to identify the antimicrobial activities of Rhizophora stylosa’s roots, flowers, leaves, and bark. R. Stylosa was progressively macerated using n-hexane, ammonia-dichloromethane, and methanol as the solvent. The disc diffusion method (Kirby-Bauer) was used to investigate R. Stylosa’s antimicrobial activity against the microorganisms Escherichia coli, Staphylococcus aureus, and Candida albicans. Root and flower of dichloromethane extracts at concentrations of 20%, 10%, and 5% each showed an inhibitory zone against bacteria S. aureus of 9.32 mm, 8.25 mm, and 10.11 mm, 9.89 mm, 8.25 mm. Root and stem bark n-hexane extracts at concentrations of 20%, 10%, and 5% also demonstrated an inhibitory zone against bacteria S. aureus of 11.04 mm, 10.3 mm, 6.53 mm and 9.45 mm; 7.97mm; 5.43 mm. In fraction groups of R. stylosa dicloromethane extract (RSD), RSD fraction 2 (20% concentration; 15.12 mm) and RSD fraction 3 (20% concentration; 12.05 mm), the antibacterial activity of the fraction groups was demonstrated against the bacteria S. aureus. GC-MS results showed that the dichloromethane extract of R. stylosa roots contained lupeol and ß-Sitosterol compounds.

Pharmacological Properties of White Mulberry (Morus alba L.) Leaves: Suppressing Migratory and Invasive Activities Against A549 Lung Cancer Cells.

Morus alba known as a white mulberry is a medicinal plant that has been used in food ingredients and traditional medicine. M. alba leaves contain various bioactive phenolic compounds, in particular chlorogenic acid (CGA), which is a major bioactive ingredient. Their anticancer potency of M. alba leaf extracts derived from Soxhlet extraction was evaluated based on cytotoxicity and antimigratory and antiinvasive properties. The dichloromethane extract exhibited the highest nitric oxide radical scavenging activity with a half-maximal inhibitory concentration (IC50) value of 780μg/mL, promising cytotoxicity against HuCCA-1, MCF-7, and A-549 cells with IC50 values of 59.18, 62.20, and 103.25μg/mL, respectively. CGA selectively inhibited the growth of MCF-7 cells with an IC50 value of 26.75μg/mL and showed potent radical scavenging activity against DPPH radicals (IC50 = 18.85μg/mL). An ethanolic extract derived from the gradient Soxhlet extraction suppressed A549 lung cancer cell migration and invasion more effectively than CGA with no migratory inhibition effect on noncancerous HaCaT cells. Furthermore, the ethanolic extract and CGA accelerated HaCaT wound closure at 20µg/mL, which was the same as allantoin. Bioactive ingredients including triterpenes, steroids, phenolics, and flavonoids were mainly detected in all extracts. The highest content of CGA (52.23g/100g dry weight) was found in the ethanolic extract derived from the gradient Soxhlet extraction. These findings show the potency of the dichloromethane extract as a cytotoxic agent against various cancer types and the ethanolic extract as an antimetastatic agent by their antimigratory and antiinvasive activities.