Soluble Extracts Research Articles

The Lipid Profile and Aorta Histopathology On Hyperlipidemic Rat by Saurauia vulcani Korth. Leaves Extract

Abstract. Dyslipidemia is a pathological condition characterized by increased levels of total cholesterol, triglycerides and LDL and decreased levels of HDL. Dyslipidemia causes cardiovascular disease risk factors by increasing cholesterol levels, increasing triglyceride levels, lowering HDL levels, and increasing LDL levels, as well as decreasing the proliferation of cardiac aortic cells in dyslipidemic rats. The pirdot plant (Saurauia vulcani Korth.) has long been known by the Simalungun, Toba and Karo communities to have the potential to treat various diseases caused by disruption of lipid processes in the body. Pirdot leaves contain bioactive compounds of flavonoids, tannins and saponins that have the potential to improve lipid profiles and prevent cardiovascular disease. This study aims to determine the activity of EEDP on the lipid profile of dyslipidemic rats. Pirdot leaf simplicia powder was extracted by maceration with 96% ethanol solvent and the extract was used on 30 dyslipidemic rats which were divided into 6 groups. Group 1 (Na-CMC), group 2 (Atorvastatin), group 3, 4, 5, 6 EEDP doses of 50, 100, 200, 400 mg/kg BW were administered orally for 21 days. At the end of the treatment, the levels of total cholesterol (TC) and aortic cell proliferation were measured. The results showed that Saurauia vulcani Korth had water content (6.23%), water soluble extract (10.50%), simplicia content soluble in ethanol (14.77%), total ash content (7.05%) and acid insoluble ash content (0.48%). From the antidyslipidemic study it was shown that EEDP 400 mg/kg BW improved blood lipand to increase aortic cell proliferation dyslipidemic rats was 69.84±0.27. Based on the explanation above, it is concluded that EEDP has an antidyslipidemic effect.

P03-073-23 Effects on Intestinal Health Following Intra-Amniotic Administration (Gallus gallus) of Cashew Nut Soluble Extract

P03-073-23 Effects on Intestinal Health Following Intra-Amniotic Administration (Gallus gallus) of Cashew Nut Soluble Extract

Pharmacognostic study and peptidomic analysis of the leaves of Nigerian Rauvolfia vomitoria Wennberg (Apocynaceae)

This study was aimed at documenting some pharmacognostic and peptidomic standards on the leaf of Nigerian species of Rauvolfia vomitoria Wennberg (RVM). Using standard methods, the fresh and dried pulverized leaves of R. vomitoria were standardized macroscopically and microscopically, in addition to the physiochemical evaluation and MALDI TOF/TOF-guided peptidomic screening of the aqueous extracts of the leaf. The leaf is simple, elliptical shaped, crenated margin which is acute. The leaf presented a hexagonal shaped epidermal cell on both sides with anomocytic stomata only on the abaxial surface making it hypostomatous while stomata number and index are 15 – 16 – 18 and 24 – 25 – 26, respectively. The transverse section of the leaf through the midrib suggests that the vascular bundles are conjoint, collateral and closed. Moisture content, total ash, acid insoluble ash, water soluble ash, sulphated ash, water soluble and alcohol soluble extractives were as follows; 7.7 ± 1,5, 4.9 ± 0.7, 1.2 ± 0.8, 4.1 ± 0.2, 4.8 ± 0.9, 3.9 ± 0.9, 8.1 ± 1.7w/w%, respectively. Peptidomic analysis revealed the abundant expression of nature-derived knottin-like peptides with a mass range of 3.1 kDa – 3.7 kDa. Knottin peptides have been reported to perform defense roles in host plants; since they are not ubiquitously distributed in planta, their detection in RVM could be useful in the proper identification of the plant and in RVM chemosystematics. Findings from this study has unveiled some important macroscopic, microscopic and physicochemical standards as well as a new peptidomic phytochemical standard helpful in the proper identification in addition to ensuring the efficacy and safety of the leaf of R. vomitoria.

Specific post-translational modifications of soluble tau protein distinguishes Alzheimer’s disease and primary tauopathies

Tau protein aggregates in several neurodegenerative disorders, referred to as tauopathies. The tau isoforms observed in post mortem human brain aggregates is used to classify tauopathies. However, distinguishing tauopathies ante mortem remains challenging, potentially due to differences between insoluble tau in aggregates and soluble tau in body fluids. Here, we demonstrated that tau isoforms differ between tauopathies in insoluble aggregates, but not in soluble brain extracts. We therefore characterized post-translational modifications of both the aggregated and the soluble tau protein obtained from post mortem human brain tissue of patients with Alzheimer’s disease, cortico-basal degeneration, Pick’s disease, and frontotemporal lobe degeneration. We found specific soluble signatures for each tauopathy and its specific aggregated tau isoforms: including ubiquitination on Lysine 369 for cortico-basal degeneration and acetylation on Lysine 311 for Pick’s disease. These findings provide potential targets for future development of fluid-based biomarker assays able to distinguish tauopathies in vivo.

In Vitro and In Vivo Cysticidal Effects of Carica Papaya Cell Suspensions.

Parasitic diseases are a major public health problem worldwide. Plant-derived products appear to be ideal candidates from a biotechnological perspective, being sustainable and environmentally friendly. The antiparasitic properties of Carica papaya have been attributed to some of its components, including papain and other compounds that are concentrated in the latex and seeds. This study demonstrated in vitro a high and insignificantly different cysticidal activity of soluble extract that was obtained after the disruption of nontransformed wild-type (WT) cells as well as transformed papaya calluses (PC-9, PC-12, and PC-23) and papaya cell suspensions (CS-9, CS-12, and CS-23). In vivo, cell suspensions of CS-WT and CS-23 that had been previously lyophilized were tested with respect to their cysticidal effects, compared with those of three commercial antiparasitic drugs. CS-WT and CS-23 together reduced the number of cysticerci, the number of buds, and the percentage of calcified cysticerci in a similar extent to albendazole and niclosamide, whereas ivermectin was less effective. Mice were then orally immunized with CS-23 that expressed the anti-cysticercal KETc7 antigen (10 μg/mouse), CS-WT (10 mg/mouse), or both together to evaluate their preventive properties. CS-23 and CS-WT significantly reduced the expected parasite and increased the percentage of calcified cysticerci as well as recovery, being more effective when employed together. The results reported in this study support the feasibility of the development of an anti-cysticercosis vaccine from cells of C. papaya in in vitro cultures, as they are a source of an anthelmintic, natural, and reproducible product.

Identification of Immunodominant Proteins of the Leishmania (Viannia) naiffi SubProteome as Pan-Specific Vaccine Targets against Leishmaniasis.

Leishmaniasis is a wide-spectrum disease caused by parasites from Leishmania genus. A well-modulated immune response that is established after the long-lasting clinical cure of leishmaniasis can represent a standard requirement for a vaccine. Previous studies demonstrated that Leishmania (Viannia) naiffi causes benign disease and its antigens induce well-modulated immune responses in vitro. In this work we aimed to identify the immunodominant proteins present in the soluble extract of L. naiffi (sLnAg) as candidates for composing a pan-specific anti-leishmaniasis vaccine. After immunoblotting using cured patients of cutaneous leishmaniasis sera and proteomics approaches, we identified a group of antigenic proteins from the sLnAg. In silico analyses allowed us to select mildly similar proteins to the host; in addition, we evaluated the binding potential and degree of promiscuity of the protein epitopes to HLA molecules and to B-cell receptors. We selected 24 immunodominant proteins from a sub-proteome with 328 proteins. Homology analysis allowed the identification of 13 proteins with the most orthologues among seven Leishmania species. This work demonstrated the potential of these proteins as promising vaccine targets capable of inducing humoral and cellular pan-specific immune responses in humans, which may in the future contribute to the control of leishmaniasis.

Secondary Metabolites from Terminalia Catappa and Evaluation of its Bioactivities

Bangladesh is a land of medicinal plants. Terminalia catappa is an important medicinal plant of Bangladesh which is used for various pharmacological and biological activities like hepatoprotective, antioxidant, anti-fertility, antidiabetic, anticoagulant and antimicrobial. The coarsely powder dried stem bark sample of T. catappa was extracted by the solvent CHCl3. The concentrated extract was then fractionated by flash column chromatography using petroleum ether, ethyl acetate and methanol as solvents respectively. The column fraction was further fractionated with void liquid chromatography. Repeated preparative thin layer chromatography of selective fractions resulted in the isolation of two compounds which were identified as a triterpenoid, taraxerol (1) and a steroid, Stigmastane-3, 6-diol (2). The structure of these compounds were elucidated by 1H NMR spectroscopy and by comparison with reported values. This is the first report of the isolation of these compounds from this plant. The different extracts also showed significant antibacterial activity against gram positive and gram negative bacteria. The methanol extract did not show significant activity. The antifungal activity of different extract of T. catappa demonstrated promising zone of inhibition except Saccharomyces cerevecae. In the brine shrimp lethality bioassay, the extract of T. catappa exhibited a significant cytotoxic activity. The LC50 value of CHCl3 soluble extract was found to be 1.55 μg/ml. T. catappa was also reported to have free radical scavenging activity with IC50 value of 255.0 μg/ml. Since this plant demonstrated a number of promising pharmacological biological activities, so it can be a good source of natural medicine. Bioresearch Commu. 9(2): 1310-1319, 2023 (July)

Isolation and Characterization of Chemical Compounds from the Stem Bark Fractions of Citrus Grandis and Evaluation of Their Antimicrobial, Cytotoxic, and Antioxidant Activities

Citrus grandis belongs to the Rutaceae family and is a naturally occurring citrus plant. The fractionated crude extracts of C. grandis have been studied for the investigation of its phytochemicals and allowed for the evaluation of biological activities, especially antimicrobial, cytotoxic, and antioxidant activities. At first, we assessed the antibacterial and antifungal properties using the disc diffusion method and conducted cytotoxicity screening using the brine shrimp lethality bioassay. Among the raw extracts, we isolated two compounds named CG-F3-B1 and CG-F3-B2 through column chromatographic separation of the chloroform extract. By comparing their proton NMR spectra with published spectra, we identified the chemical structures of these compounds as Zeylenol and Limonin, respectively. Regarding antibacterial testing, we observed that the methanol soluble fractions and petroleum ether fractions exhibited mild to moderate activity against bacteria. Additionally, the ethyl acetate soluble fraction showed moderate antibacterial activity. In addition, the crude extract displayed moderate antifungal activity against specific fungi. Furthermore, the cytotoxic assay revealed a relevant cytotoxic effect of a crude extract with an LC50 value of 37 μg/ml. The antioxidant activity was determined using the DPPH assay, and the methanol soluble extract exhibited modest antioxidant activity with an IC50 value of 89 μg/ml. Our findings demonstrated that the stem bark fractions and isolated compounds from C. grandis exhibited various promising biological activities, including antibacterial, antifungal, cytotoxic, and antioxidant properties.
 Bioresearch Commu. 9(2): 1320-1329, 2023 (July)

Chemical and Sensory Characteristics of Clover (Marsilea crenata) Powder Infusion with the Addition of Red Ginger (Zingiber officinale)

Clover (Marsilea crenata) has the potential to be used as powder infusion products because its benefits to health. The disadvantage of clover leaf is it produce an unpleasant aroma that requires the addition of spices. This study aims to study the effect of clover powder formulations and red ginger (Zingiber officinale) spice on the chemical and sensory characteristics of herbal infusion. This study used Completely Randomized Design (CRD), namely the comparison of Clover leaf powder and red ginger powder, namely (95%:5%), (90%:10%), (85%:15%) and (80%:20%). The analysis included moisture content, ash content, antioxidant activity, water soluble extract content as well as sensory quality tests and hedonic tests. The data were analyzed statistically using ANOVA and continued with DNMRT at the 5% level. The addition of red ginger powder had a significant effect on moisture content, ash content, antioxidant activity (IC50), water soluble extract content, and descriptive and hedonic sensory assessment and overall assessment. The selected formula based on the final result is the addition of 80% clover powder and 20% red ginger powder with a water content of 16.68%; ash content 4.71%; antioxidant activity 207.745 ppm; and water-soluble essence content of 19.02%. The sensory quality test of the selected products obtained a brownish-green color, not unpleasant, and a bit spicy. The results of the hedonic test showed that the color, aroma, and taste of powder infusion were preferred by the panellists.

PERBANDINGAN HASIL PENETAPAN PARAMETER SPESIFIK DAN NON-SPESIFIK ANTARA SIMPLISIA TERHADAP EKSTRAK METANOL PURUN TIKUS (Eleocharis Dulcis)

Eleocharis dulcis is a swamp plant has potential as a traditional medicine. The purpose of this study was to compare the results of determining specific and non-specific parameters on simplicia and methanol extract of purun tikus’s stems. Determination of specific parameters includes organoleptic, macroscopic - microscopic tests, water soluble extract content, ethanol soluble extract content and phytochemical screening such as testing for alkaloids, flavonoids, tannins, saponins and steroids/triterpenoids. Determination of non-specific parameters includes drying shrinkage, determination of total ash content, acid insoluble ash content and heavy metal contamination. The results of the study on the specific parameters of stem extract showed that the simplicia powder was light brown in color, had a characteristic odor that was not pungent and had a bitter taste and on microscopic examination only the simplicia could be observed epidermis, transport bundles, parenchyma and collenchyma fragments,. The results of the non-specific simplicia characterization test showed drying shrinkage of 8.91%, total ash content of 13.79%, acid insoluble ash content of 6.89%. The results showed that both simplicia and methanol extract of purun tikus’s stems met the general requirements for specific and non-specific characteristics except for the total ash content of the simplicia which was declared not eligible.

Microwave-Assisted Hydrothermal Processing of Rugulopteryx okamurae.

One possible scheme of Rugulopteryx okamurae biomass valorization based on a green, rapid and efficient fractionation technique was proposed. Microwave-assisted pressurized hot water extraction was the technology selected as the initial stage for the solubilization of different seaweed components. Operation at 180 °C for 10 min with a 30 liquid-to-solid ratio solubilized more than 40% of the initial material. Both the alginate recovery yield (3.2%) and the phenolic content of the water-soluble extracts (2.3%) were slightly higher when distilled water was used as solvent. However, the carbohydrate content in the extract (60%) was similar for both solvents, but the sulfate content was higher for samples processed with salt water collected from the same coast as the seaweeds. The antiradical capacity of the extracts was related to the phenolic content in the extracts, but the cytotoxicity towards HeLa229 cancer cells was highest (EC50 = 48 µg/mL) for the extract obtained with distilled water at the lowest temperature evaluated. Operation time showed a relevant enhancement of the extraction performance and bioactive properties of the soluble extracts. The further fractionation and study of this extract would be recommended to extend its potential applications. However, due to the low extraction yield, emphasis was given to the solid residue, which showed a heating value in the range 16,102-18,413 kJ/kg and could be useful for the preparation of biomaterials according to its rheological properties.

Pharmacognostical and Pharmaceutical Analysis of Triphaladi Kashaya -An Ayurvedic Herbal Formulation for Diabetes Mellitus

Background: Triphaladi Kashaya is indicated as one of the drug management of Prameha, so for assurance of quality of polyherbal compounds pharmacognostical and pharmaceutical analysis should be done. Methods: Triphaladi Kashaya was subjected to microscopic evaluation like macroscopic /organoleptic study, Powder microscopy, Foreign matter, Loss on drying at 1050 C, Total ash, Acid insoluble ash, Alcohol-soluble extract, Water-soluble extract, TLC Analysis solvent systems: Toluene: Ethyl acetate: Formic acid (5:4:1) Stationary phase: Pre coated silica gel 60 F254 plates. Results: Pharmacognostical study showed the presence of certain identifying characters of all the ingredients of Triphaladi Kashaya which are Haritaki, Bibhitaki, Amalaki, Vishala, Devdaru, Mustaka. In pharmaceutical study, preliminary physiochemical analysis showed loss on drying 3.80% w/w, total ash 2.22% w/w, acid insoluble ash 0.18% w/w, alcohol soluble extract 2.49% w/w, water soluble extract 2.00%w/w, TLC analysis showed 6 spots in 254 nm and 4 spots in 366 nm. Conclusion: Pharmacognostical and physiochemical observation revealed the specific characters of all active constituents of Triphaladi Kashaya and confirm purity and actualities of the drug.

Effects of Three Different Brazilian Green Propolis Extract Formulations on Pro- and Anti-Inflammatory Cytokine Secretion by Macrophages

Propolis is known for its immunomodulatory properties. We investigated the effects of three recently developed propolis extract formulations: polar propolis fraction (PPF), soluble propolis dry extract (PSDE), and microencapsulated propolis extract (MPE), and some of their components, on pro- and anti-inflammatory cytokine production in a macrophage model. Bone marrow cell-derived macrophages (BMDM) in cell culture were E. coli lipopolysaccharide (500 ng/mL) stimulated for two hours and subsequently incubated for 20 hours with one of the three propolis extract formulations (1, 10, 25, 50, 100 and 300 µg/mL) or with isolated propolis components (caffeic acid, p-coumaric acid, artepillin C, or baccharin) (10, 25, 50 and 100 µg/mL) to determine how they affected secretion of the pro-inflammatory cytokines IL-6 and TNF-α, and the anti-inflammatory cytokine, IL-10. PPF increased IL-6 and IL-10 levels. PSDE increased IL-6 and IL-10 at lower concentrations, while at higher concentrations it increased TNF-α and decreased IL-10. MPE increased IL-10. Caffeic acid and PPF increased both IL-6 and IL-10. Artepillin C and PSDE decreased IL-10. Baccharin and MPE increased IL-10. Baccharin also decreased IL-6. p-coumaric acid did not affect secretion of these cytokines. Pro- and anti-inflammatory cytokine production by the different propolis extracts differed; however, all three propolis extract formulations have potential as immunomodulatory agents in food supplement and pharmaceutical products.

Intra-Amniotic Administration of Cashew Nut (Anacardium occidentale L.) Soluble Extract Improved Gut Functionality and Morphology In Vivo (Gallus gallus).

Cashew nuts are rich in dietary fibers, monounsaturated fatty acids, carotenoids, tocopherols, flavonoids, catechins, amino acids, and minerals that offer benefits for health. However, the knowledge of its effect on gut health is lacking. In this way, cashew nut soluble extract (CNSE) was assessed in vivo via intra-amniotic administration in intestinal brush border membrane (BBM) morphology, functionality, and gut microbiota. Four groups were evaluated: (1) no injection (control); (2) H2O injection (control); (3) 10 mg/mL CNSE (1%); and (4) 50 mg/mL CNSE (5%). Results related to CNSE on duodenal morphological parameters showed higher Paneth cell numbers, goblet cell (GC) diameter in crypt and villi, depth crypt, mixed GC per villi, and villi surface area. Further, it decreased GC number and acid and neutral GC. In the gut microbiota, treatment with CNSE showed a lower abundance of Bifidobacterium, Lactobacillus, and E. coli. Further, in intestinal functionality, CNSE upregulated aminopeptidase (AP) gene expression at 5% compared to 1% CNSE. In conclusion, CNSE had beneficial effects on gut health by improving duodenal BBM functionality, as it upregulated AP gene expression, and by modifying morphological parameters ameliorating digestive and absorptive capacity. For intestinal microbiota, higher concentrations of CNSE or long-term intervention may be necessary.

Analysis of chemical properties of thermally treated Pinus roxburghii Sargent wood

Effects of thermal modification were determined relative to chemical parameters of Pinus roxburghii. Thermal modification of wood was carried out at 80, 120, 160, and 200 °C for 2, 4, and 6 h. The chemical properties were different for different temperatures and different heating time. All parameters were similar except for cold water soluble extractives. Among the chemical properties studied, the maximum mean value of cold water extractives (8.20%), hot water soluble extractives (12.7%), holocellulose content (71.8%), and ash content (1.46%) were recorded at 120 °C, whereas the maximum mean values of alcohol benzene soluble extractives (13.9%) and lignin content (33.7%) were observed at 200 °C. The minimum mean value of cold water soluble extractives (5.82%), hot water soluble extractives (9.27%), holocellulose content (65.8%), and ash content (1.03%) were found to be at 200 °C, while the highest value of alcohol benzene soluble extractives 12.2% (control) and lignin content (28.0%) were found to be at 80 °C.

Contribution of Proteins and Peptides to the Impact of a Soy Protein Isolate on Oxidative Stress and Inflammation-Associated Biomarkers in an Innate Immune Cell Model.

The innate and adaptative immune systems are involved in the regulation of inflammatory and oxidative processes and mediators such as reactive oxygen species (ROS) and nitric oxide (NO). The exacerbated action of these players results in an oxidative stress status and chronic inflammation, which is responsible for the development of non-communicable diseases (NCDs). By modulating these mediators, bioactive compounds in food can exert a key role in the prevention of several NCDs. Among these compounds, soybean proteins and peptides such as lunasin have been considered to be among the most promising. The aim of this study was to obtain and characterize a soluble protein-enriched extract from a commercial soybean protein isolate and fractionate it into different fractions through ultrafiltration. Their antioxidant and immunomodulatory properties were then evaluated using biochemical and cell models. A total of 535 proteins (from 282 protein groups) were identified in the extract, in which the presence of the peptide lunasin was confirmed. The enrichment of this peptide was achieved in the 3-10 kDa fraction. The protective effects against the oxidative stress induced by LPS in the macrophage model could have been mediated by the radical scavenging capacity of the peptides present in the soybean samples. Under basal conditions, the extract and its ultrafiltered fractions activated macrophages and induced the release of NO. However, under challenged conditions, the whole extract potentiated the NO-stimulating effects of LPS, whereas the fraction containing 3-10 kDa peptides, including lunasin, counteracted the LPS-induced NO increase. Our findings suggest a promising role of soybean protein as an ingredient for functional foods and nutraceuticals aimed at promoting health and preventing oxidative stress and/or immune-alteration-associated diseases.

Investigation on the Composition and Extraction Mechanism of the Soluble Species from Oily Sludge by Solvent Extraction.

Oily sludge (OS) was extracted with petroleum ether (PE), methanol, carbon disulfide (CDS), acetone, and isometric CDS/acetone mixture (IMCDSAM), respectively, to obtain soluble species (E1-E5) and extraction residues (R1-R5). The soluble species were analyzed by gas chromatography/mass spectrometry (GC/MS), and the extraction residues were characterized by Fourier transform infrared spectrometry (FTIR) and thermogravimetric analysis (TGA). Results showed that the extract yield of the soluble species from OS using CDS and IMCDSAM as the solvent was 61.0 and 67.3%, respectively. GC/MS results exhibited that the compounds detected in E1-E5 are mainly hydrocarbons and oxygen-containing compounds. E1-E5 are rich in alkanes, alkenes, ketones, alcohols, and other oxygen-containing compounds. Double-bond equivalence (DBE) and carbon numbers (CNs) of the compounds detected in E1, E2, and E4 are distributed in 0-4 (DBE) and 10-20 (CNs), respectively, while the DBE and CNs of the detected compounds in E3 and E5 are concentrated in 0-6 and 15-35, respectively. Thermogravimetry-differential thermogravimetry (TG-DTG) profiles presented that pyrolysis of OS occurred mainly in the temperature range of 150-750 °C, while pyrolysis of R1-R5 took place in the range of 350-750 °C. In the temperature range of 150-550 °C, the weight losses of OS and each extraction residue differ significantly, with OS having a much higher weight loss than the extraction residues. Meanwhile, the possible mechanism of oily sludge extraction was considered. Results revealed that selecting a low-polar or nonpolar solvent capable of selectively destroying hydrogen bonds and/or aromatic interactions is critical for improving the extract yield of OS.

Hachimijiogan, a traditional herbal medicine, modulates adipose cell function and ameliorates diet-induced obesity and insulin resistance in mice.

Hachimijiogan (HJG) has originally been used to ameliorate a variety of symptoms associated with low ambient temperatures. However, its pharmacological action in metabolic organs remains unclear. We hypothesized that HJG may modulate metabolic function and have a potential therapeutic application to metabolic diseases. To test this hypothesis, we investigated metabolic action of HJG in mice. Male C57BL/6J mice chronically administered with HJG showed a reduction in adipocyte size with increased transcription of beige adipocyte-related genes in subcutaneous white adipose tissue. HJG-mixed high-fat diet (HFD)-fed mice showed alleviation of HFD-induced weight gain, adipocyte hypertrophy, liver steatosis with a significant reduction in circulating leptin and Fibroblast growth factor 21 despite no changes in food intake or oxygen consumption. Feeding an HJG-mixed HFD following 4-weeks of HFD feeding, while a limited effect on body weight, improved insulin sensitivity with a reversal of decreased circulating adiponectin. In addition, HJG improved insulin sensitivity in the leptin-deficient mice without significant effects on body weight. Treatment with n-butanol soluble extracts of HJG potentiated transcription of Uncoupling protein 1 mediated by β3-adrenergic agonism in 3T3L1 adipocytes. These findings provide evidence that HJG modulates adipocyte function and may exert preventive or therapeutic effects against obesity and insulin resistance.

Sequential extraction of compounds of interest from yeast biomass assisted by pulsed electric fields.

One strategy to reduce cost and improve feasibility of waste-yeast biomass valorization is to obtain a spectrum of marketable products rather than just a single one. This study explores the potential of Pulsed Electric Fields (PEF) for the development of a cascade process designed to obtain several valuable products from Saccharomyces cerevisiae yeast biomass. Yeast biomass was treated by PEF, which affected the viability of 50%, 90%, and over 99% of S. cerevisiae cells, depending on treatment intensity. Electroporation caused by PEF allowed access to the cytoplasm of the yeast cell without causing total breakdown of the cell structure. This outcome was an essential prerequisite to be able to perform a sequential extraction of several value-added biomolecules from yeast cells located in the cytosol and in the cell wall. After incubating yeast biomass previously subjected to a PEF treatment that affected the viability of 90% of cells for 24h, an extract with 114.91 ± 2.86, 7.08 ± 0.64, and 187.82 ± 3.75mg/g dry weight of amino acids, glutathione, and protein, respectively, was obtained. In a second step, the extract rich in cytosol components was removed after 24h of incubation and the remaining cell biomass was re-suspended with the aim of inducing cell wall autolysis processes triggered by the PEF treatment. After 11days of incubation, a soluble extract containing mannoproteins and pellets rich in β-glucans were obtained. In conclusion, this study proved that electroporation triggered by PEF permitted the development of a cascade procedure designed to obtain a spectrum of valuable biomolecules from S. cerevisiae yeast biomass while reducing the generation of waste.

Teh herbal terstandar simplisia bunga gemitir (Tagetes erecta Linn.) sebagai kandidat antioksidan baru

Empirically, gemitir flower (Tagetes erecta Linn.) has been used for generations as an alternative to treat whooping cough and eye pain medication. Gemitir flower is potential as an antioxidant because it contains secondary metabolites of phenolic groups, flavonoids, and alkaloids that have been shown to have antioxidant activity. As a pharmaceutical products, medicinal plants must be guaranteed quality and safety. This study aims to determine the suitability of the simplicia quality of gemitir flowers by standardization based on Indonesian Herbal Pharmacopoeia and Indonesian Materia Medica, and also to determine the antioxidant potential of standardized herbal teas of gemitir flowers. This first step of this research were standardization of gemitir flower simplicia based on specific and non-specific parameters, followed by making standardized herbal tea of gemitir flower. Antioxidant activity test was carried out on tea preparations using the DPPH method. The results showed that the simplicia of gemitir flower met all the standard parameters of specific and non-specific standardization with an ash content value of 3,47%, acid insoluble ash content of 0,11%, water soluble extract content of 24,86%, ethanol soluble extract content of 21,67%, drying shrinkage content of 9,33%, moisture content of 9,23% and foreign organic matter of 0,3%. Standardized herbal tea simplicia gemitir flower was able to inhibit 50% of DPPH free radicals at a volume of 33,87 µL. Based on the results, it can be concluded that the empirical use of gemitir flower tea potential as a natural antioxidant.