Pericarp Extract Research Articles

Anti-inflammatory effect of Garcinia mangostana Linn. pericarp extract in methicillin-resistant Staphylococcus aureus-induced superficial skin infection in mice

Garcinia mangostana (mangosteen) pericarp has antibacterial effects; however, information regarding its anti-inflammatory activity in vivo is limited. The anti-inflammatory effect of G. mangostana pericarp extract against methicillin-resistant Staphylococcus aureus (MRSA)-induced superficial skin infection was investigated in mice using a tape stripping model. G. mangostana pericarp ethanolic extract (GME) and its constituent, α-mangostin, were topically administered to mice with MRSA-induced superficial skin infection. MRSA-infected wounds treated with GME were completely healed on the 10th day of the study and the number of MRSA-colonies decreased from the first day of the study, whereas α-mangostin-treated wounds never completely healed with higher numbers of MRSA colonies. The epidermis of GME-treated wounds had nearly completely regenerated, with no inflammatory cell infiltration. In contrast, α-mangostin-treated wounds exhibited neutrophil infiltration and accumulation of mast cells. MRSA-infected wounds without treatment showed high expression of TNF-α, IL-6, IL-1β, and TLR-2 genes. In contrast, GME decreased mRNA levels, restoring expression of those genes to normal levels. Notably, α-mangostin did not down-regulate the expression of pro-inflammatory cytokines to the same extent as GME. Hence, GME is a promising alternative MRSA treatment because of its antibacterial, anti-inflammatory, and wound healing effects.

The Comparative Toxicity of Xanthones and Tannins in Mangosteen (Garcinia mangostana Linn.) Pericarp Extract against BHK-21 Fibroblast Cell Culture.

Objective:The objective of this study is to compare the toxicity level of xanthones and tannins derived from mangosteen pericarp extract at specific concentrations against BHK-21 fibroblast cell cultures.Methods:Mangosteen was extracted using a maceration method with ethanol 96%. Xanthones were isolated from the chloroform extract, whereas tannins were isolated using acetone alcohol and serial diluted to 100% concentration. Toxicity levels were monitored after 24 h using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide assay technique by ELISA reader at 620 nm.Results:Viable cells of BHK-21 against xanthone concentration began to decrease (40.24%) at 3.98% xanthones, whereas viable cells of BHK-21 against tannin concentration began to decrease (68.06%) at 2.2% tannins.Conclusion:It is suggested that tannins were more toxic than the xanthones derived from mangosteen pericarp.

Effect of Mangosteen (Garcinia Mangostana) Pericarp Extract in Reducing the Heat Stress of Laying Quails

Effect of Mangosteen (Garcinia Mangostana) Pericarp Extract in Reducing the Heat Stress of Laying Quails

Optimasi Sediaan Pelembab Ekstrak Kering Kulit Buah Manggis (Garcinia mangostana L.) dengan Kombinasi Asam Stearat dan Trietanolamin sebagai Emulgator

Mangosteen is a plant which has a high antioxidant activity. The mangosteen pericarp contains antioxidant compound alpha mangosteen. Beside as an antioxidant, alpha-mangosteen has the potential as skin moisturizer, which gives protection for dry skin condition. The purpose of this research was to know the influence a combination stearic acid and trietanolamin on the physical characteristics and effectiveness. As the results of this researchs optimum formula was obtained using factorial design expert. The formula divided into 4 groups, formula A 10% of stearic acid and 0.1% trietanolamine, formula B was 16% of staric acid and 0.1% trietanolamine, formula C 10% of stearic acid and 0.5% trietanolamine and formula D 16% of stearic acid and 0.5% trietanolamine. Effectiveness and physical quality results were analyzed using one way anova and post hoc tukey with the level of confidence 95%. The results showed that stearic acid as an emulsifying agent have significant effect on the decrease of spreadibility, effectiveness and an increase in pH, viscosity, stickiness and ease for removal. Triethanolamin as an emulsifying agent had significant effect on them decrease of spreadibility, effectiveness and an increase in pH, viscosity, stickiness, and ease for removal. Interaction of both agents had signifficant effect to increase pH, viscosity, and effectiveness and a decrease in spreadibility, stickiness, and ease to removal of moisturizing cream containing the extract mangosteen pericarp. Optimum formula of moisturizing cream dry extract of mangosteen pericarp was obtained, a combination of 14.02% stearic acid and 0.41% trietanolamine as an anionic emulsifying agents.

Standardized Punica Granatum Pericarp Extract, Suppresses Tumor Proliferation and Angiogenesis in a Mouse Model of Melanoma: Possible Involvement of PPARα and PPARγ Pathways.

Melanoma is a challenging disease to treat. Punica granatum L. has a potential anticancer effect. This study determined the antiproliferative and antiangiogenic potential of the extract from pomegranate pericarp (PPE) in melanoma. Melanoma cells (1 × 106) were injected to C57BL6 mice subcutaneously. On 8th day, mice were randomly divided into 9 groups. Group 1 was considered as control and received distilled water. Groups 2 to 5 received 50, 100, 200 or 400 mg/kg of standardized PPE, orally. Group 6 received 400 mg/kg PPE and PPAR-γ antagonist (T0070907, 5 mg/kg/day). Group 7 received 400 mg/kg PPE and PPAR-α antagonist (GW6471, 10 mg/kg/day). Groups 8 and 9 received PPAR antagonists alone. On the 16th day, mice were euthanized and the tumor samples were analyzed by immunohistochemistry staining for Ki-67 and CD31. Vascular endothelial growth factor (VEGF) plasma level was determined by ELISA. PPE at the doses of 50, 100, 200, and 400 mg/kg decreased tumor weight to 1.28, 1.03, 0.82, and 0.58 g, respectively, in comparison with 1.46 g in control group. Tumor volume reduced to 2.1, 1.7, 1.35 and 0.95 cm3 at the mentioned doses, in comparison with 2.4 cm3 in control group (P < 0.05 for all groups). VEGF, Ki-67 and CD31 were decreased dose dependently in the treatment groups (P < 0.05). PPARα and PPARγ antagonists significantly reduced the extract effects (P < 0.05). It was concluded that PPE may have a potential implication in melanoma treatment through activation of PPARα and PPARγ receptors.

Uji Fitokimia Ekstrak Kulit Buah Salak (Salacca zalacca) dan Pengaruh Ekstrak terhadap Pertumbuhan Bakteri Streptococcus mutans dan Jamur Candida albicans

Snakefruit (Salacca zalacca) is one of Indonesian native plant that the pericarp of snakefruit can be used because it has activity as an antimicrobial. This study aims to identify the metabolite content of snakefruit pericarp and to investigate the potential of snakefruit pericarp extracts in inhibiting the growth of Streptococcus mutans and Candida albicans. Snakefruit pericarp was extracted by reflux method using ethanol 96%, and an extract was tested by phytochemical qualitatively and antimicrobial activity of extract was carried out using the well method, by using concentrations are 5, 10, 15, and 20%. The results showed that the extracts contains secondary metabolites i.e. alkaloids, flavonoids, saponins and tannins. Extract of snakefruit pericarp can inhibit the growth of Streptococcus mutans and Candida albicans at 5% concentration and the inhibiting activity increased together with higher concentrations of extract.

Evaluation of Anticariogenic Efficacy of Pomegranate (Punica Granatum) Pericarp Extract as Natural Mouth Rinse: An In Vitro and In Vivo Study

Plant materials were known as source of new antimicrobial agents. Many efforts have been made to develop alternative mouth rinses from natural products which are safe, easily available and substitute the standard pharmaceutical remedies. Thus, considering the therapeutic value of pomegranate fruit, the present study was designed to compare the antimicrobial efficacy of aqueous extract of Pomegranate pericarp and commercially available Chlorhexidine mouth wash against caries causative microorganisms both in vitro and in vivo. To evaluate the antimicrobial efficacy of pomegranate pericarp extract (PPE) against Streptococcus mutans (S.mutans) and to determine its usefulness as anti caries mouth rinse. In vitro antimicrobial efficacy was evaluated by disc inhibition zone method and broth dilution assay considering minimum inhibitory concentration of PPE. In vivo evaluation was done as a randomised controlled trial which included thirty children aged between 6-12 years. They were divided randomly into 3 groups of ten each and subjected to different mouth rinses - Group I: PPE mouth rinse, Group II: 0.2% Chlorhexidine mouth rinse and Group III: Distilled water (control). The salivary samples which were collected before and after (5 minutes) mouth rinsing were inoculated on Mutans Sanguis agar and the bacterial count was calculated.Statistically significant decrease in salivary S.mutans count was observed in group I and II compared to group III after mouth rinsing. However, there was no statistically significant difference between groups I and II. PPE mouthwash was effective in reducing the salivary S.mutans count and was comparable to chlorhexidine mouth rinse. Hence PPE mouth rinse may be considered as a potential anti caries mouth rinse.

PREPARATION OF SOLID LIPID NANOPARTICLES CONTAINING MANGOSTEEN PERICARP EXTRACT

Objectives: The aim of this study was to develop solid lipid nanoparticles (SLNs) containing mangosteen pericarp extract (MPE) to achieve enhanced photoprotection and to provide an alternative to synthetic sunscreens in the market.Materials and Methods: The MPE was prepared using the maceration method, and evaluated for sun protection factor (SPF) value using an ultraviolet (UV)-Vis spectrophotometer. SLNs were prepared through ultrasonication method. Blank-SLNs were formulated using stearic acid (SA) or palmitic acid (PA) as solid lipids at a concentration of 3%. Tween® 80 or polyvinyl alcohol (PVA) was employed as a surfactant with a concentration ranging from 1 to 2%. The obtained blank-SLNs were investigated for their physical characteristics, (i.e., morphology, particle size, polydispersity index [PDI], and zeta potential values). The blank-SLNs with suitable physical characteristics were selected to encapsulate MPE and evaluated for the physical characteristics.Results: The MPE was a brownish viscous substance with an SPF value that ranged from 3.09±0.005 to 27.20±0.05 at a concentration ranging from 0.02 to 0.1 mg/ml. Based on the physical characteristics, the blank-SLNs employing PA or SA with 1% of PVA were selected. The MPE-SLNs were spherical, with a particle size that ranged from 443.51±6.50 to 533.52±16.15 nm; PDI ranged from 0.35±0.008 to 0.459±0.02, and zeta potential value ranged from 18.32±1.37 to −19.03±0.64. The entrapment efficiencies of MPE-PA-SLNs and MPE-SA-SLNs were 83.24±1.37% and 84.17±0.411%, respectively.Conclusion: The results indicated the promising potential of MPE as a UVB photoprotector. The MPE-SLNs were also successfully formulated, but, further study is needed to confirm the potential of MPE-SLNs to be used as a sunscreen, and their stability during storage.

Effects of Mangosteen pericarp Extract to Clinical Improvements, The Plasma Level of IL-6 and Malondialdehyde in Acute Exacerbation of COPD Patients

Background: Amplification of inflammation in acute exacerbation of chronic obstructive pulmonary disease (COPD) increases inflammatory&#x0D; mediators and oxidative stress in the airways, pulmonary and systemic circulation that are characterized by increased plasma level of IL-6&#x0D; and MDA, resulting in worsening of clinical symptoms. Xanthones in mangosteen pericarp have anti-inflammatory and antioxidant effects,&#x0D; potentially as an adjuntive therapy in acute exacerbations of COPD.&#x0D; Methods: The aim of this study was to determine the effect of mangosteen pericarp extract to clinical improvements, plasma level of IL-6 and&#x0D; MDA of acute exacerbation COPD patients. A clinical trial of experimental with pretest and posttest was conducted on 34 acute exacerbation&#x0D; of COPD patients in Dr. Moewardi Hospital Surakarta and Dr. Ario Wirawan Lung Hospital Salatiga from April until May 2016. The sample&#x0D; was taken by consecutive sampling. Subjects were divided by randomized double blind technique into the treatment group (n=17) received&#x0D; mangosteen pericarp extract 2x1100mg/day and control group (n = 17) received placebo. Clinical improvements were measured in CAT&#x0D; score and length of stay. CAT score, plasma level of IL-6 and MDA were measured on admission and at discharge. Length of stay based&#x0D; on the number of days of care in hospitals.&#x0D; Results: There was significant difference (p=0,011) towards decreased of IL-6 plasma level between treatment group (-2,17 ± 3,46 pg/&#x0D; mL) and control group (+1,67 ± 6,81 pg/mL). There were no significant difference towards decreased of length of stay (p=0,34) between&#x0D; treatment group (4,12 ± 1,54 days) and control group (5,24 ± 2,49 days), towards decreased of CAT score (p=0,252) between treatment&#x0D; group (-19,18 ± 3,96) and control group (-18,24 ± 2,75), and towards decreased of MDA plasma level (p=0,986) between treatment group&#x0D; (+0,03 ± 0,36μmol/L) and control group (+0,35 ± 1,58).&#x0D; Conclusions: The addition of mangosteen pericarp extract 2x1100mg/day during hospitalization was significantly lowered plasma levels&#x0D; of IL-6, but were not significant in lowering the CAT score, shortening the length of stay, and reducing the increase in plasma level of MDA.

Aqueous Extract of Argania spinosa L. Fruits Ameliorates Diabetes in Streptozotocin-Induced Diabetic Rats.

The argan tree (Argania spinosa L.) is an endemic species from south-western Morocco. Argan-based preparations have been widely used in Moroccan traditional medicine for their biological properties including diabetes especially argan oil. However, the antihypergycemic effect of the pericarp of A. spinosa fruit has never been evaluated. The purpose of this study was to investigate the effect of a single dose and daily oral administration for seven days of aqueous extract of pericarp of Argania spinosa fruit (A.E.P.F.A.S) in normal and streptozotocin (STZ) diabetic rats. The effect of A.E.P.F.A.S. (10 mg/kg) on blood glucose levels, plasma Total Cholesterol (TC) and triglyceride concentrations were measured in both normal and diabetic rats. The antioxidant capacity of the A.E.P.F.A.S was also demonstrated using test of DPPH (1-1-diphenyl 2-picryl hydrazyl). The histopathological changes in liver and pancreas have been evaluated in both normal and STZ diabetic rats. A preliminary phytochemical screening for various bioactive constituents and the antioxidant capacity were realized. Single oral administration of A.E.P.F.A.S reduced blood glucose levels p 6 h after administration in STZ diabetic rats. Furthermore, blood glucose levels were decreased in STZ diabetic rats after seven days of treatment. According to the oral glucose tolerance test, the A.E.P.F.A.S. was shown to prevent significantly the increase in blood glucose levels in diabetic treated rats after glucose administration when compared to the control group. Moreover, A.E.P.F.A.S showed antioxidant activity and revealed the inhibitory concentration of 50% of free radicals (IC50) of 279.16 µg/ml. This study demonstrates antihyperglycemic, lowering plasma cholesterol levels and antioxidant effects of A.E.P.F.A.S. in the severe diabetic state. Further investigations are needed to elucidate the mechanism( s) of action of A.E.P.F.A.S. and the active constituent(s) of the extract.

Preparation of basil oil nanoemulsion using Sapindus mukorossi pericarp extract: Physico-chemical properties and antifungal activity against food spoilage pathogens

Demand for organic chemical-free formulations in food industry for the purpose of food preservation has triggered exploration of biosurfactants capable of nano-emulsification. Extraction protocol for saponin from fruit pericarp of Sapindus mukorossi was standardized. Saponin was characterized through FTIR and NMR. Solvents were found to have significant influence on the critical micelle concentration (CMC). Aqueous extraction yielded higher CMC (666.67 ppm) over 1:1 water: ethanol (416.67 ppm) and ethanolic extract (370.37 ppm). Aqueous extract of S. mukorossi (0.4%) was used as biosurfactant for nanoemulsification of basil oil through ultrasonication. DLS and TEM confirmed its efficacy for nanoemulsification based on droplet size of 37.7 and 57.6 nm and stability tests. The formulated nanoemulsion was investigated for its antimicrobial activity against common food spoilage fungi Penicillium chrysogenum and Aspergillus flavus. Basil oil thus nanoemulsified was found to have higher inhibitory activity (upto 20%) over its coarse emulsion. Formulated nanoemulsion at 1000 ppm was found to have 64–67% inhibitory activity over these pathogens compared to standard fungicide Carbendazim. Sapindus mukorossi can thus emerge as potential source of biosurfactant for formulating emulsion based preparations for food safety.

Overexpressed CYP450 mediated apoptosis evaluates cytotoxicity and teratotoxicity of Cucumis callosus

Fruits of Cucumis callosus (Rottl.) Cogn. (Family: Cucurbitaceae) plant, are commonly known as “bitter cucumber” (English) and “Kachri” (Hindi) in India and have been traditionally used for antioxidant, rich source of vitamin C, antidiabetic and anticancer actions. Tribal peoples of Odissa and West-Bengal are using these fruits during worship and as a vegetable. In vitro cytotoxicity of methanolic seed extract of C. callosus (MSCC) at different concentrations (25, 50, 100, 200, 400) µg/ml and methanolic pericarp extract of C. callosus (MPCC) at (30, 60, 120, 240, 360) µg/ml on Ehrlich Ascites Carcinoma (EAC) cell line, has been evaluated by using the MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay and Trypan blue dye exclusion assay for a period of 3 h treatment. Acute toxicity and in vivo teratotoxicity of both extracts were also evaluated using the Zebrafish embryo developmental assay. The MSCC and MPCC showed the direct cytotoxic effect on EAC cells in a dose-dependent manner with IG50 value 273.17 and 235.08 µg/ml respectively. The MPCC in 240 and 360 µg/ml showed a strong teratotoxic effect on Zebrafish embryo in a dose-dependent manner. The cytotoxicity and teratotoxicity of MPCC were due to overexpressed CYP450 mediated apoptosis in the tissue.

Mangosteen pericarp extract embedded in electrospun PVP nanofiber mats: physicochemical properties and release mechanism of α-mangostin.

Backgroundα-Mangostin is a major active compound of mangosteen (Garcinia mangostana L.) pericarp extract (MPE) that has potent antioxidant activity. Unfortunately, its poor aqueous solubility limits its therapeutic application. Purpose: This paper reports a promising approach to improve the clinical use of this substance through electrospinning technique.MethodsPolyvinylpyrrolidone (PVP) was explored as a hydrophilic matrix to carry α-mangostin in MPE. Physicochemical properties of MPE:PVP nanofibers with various extract-to-polymer ratios were studied, including morphology, size, crystallinity, chemical interaction, and thermal behavior. Antioxidant activity and the release of α-mangostin, as the chemical marker of MPE, from the resulting fibers were investigated.ResultsIt was obtained that the MPE:PVP nanofiber mats were flat, bead-free, and in a size range of 387–586 nm. Peak shifts in Fourier-transform infrared spectra of PVP in the presence of MPE suggested hydrogen bond formation between MPE and PVP. The differential scanning calorimetric study revealed a noticeable endothermic event at 119°C in MPE:PVP nanofibers, indicating vaporization of moisture residue. This confirmed hygroscopic property of PVP. The absence of crystalline peaks of MPE at 2θ of 5.99°, 11.62°, and 13.01° in the X-ray diffraction patterns of electrospun MPE:PVP nanofibers showed amorphization of MPE by PVP after being electrospun. The radical scavenging activity of MPE:PVP nanofibers exhibited lower IC50 value (55–67 µg/mL) in comparison with pure MPE (69 µg/mL). The PVP:MPE nanofibers tremendously increased the antioxidant activity of α-mangostin as well as its release rate. Applying high voltage in electrospinning process did not destroy the chemical structure of α-mangostin as indicated by retained in vitro antioxidant activity. The release rate of α-mangostin significantly increased from 35% to over 90% in 60 minutes. The release of α-mangostin from MPE:PVP nanofibers was dependent on α-mangostin concentration and particle size, as confirmed by the first-order kinetic model as well as the Hixson–Crowell kinetic model.ConclusionWe successfully synthesized MPE:PVP nanofiber mats with enhanced antioxidant activity and release rate, which can potentially improve the therapeutic effects offered by MPE.

TISSUE AND BIOCHEMICAL BARRIERS OF SUGAR BEET (BETA VULGARIS L. provar. altissima Doell.) PERICARP

Shown that various pericarp of sugar beet hybrids contain a substantial amount of phenolic compounds which are represented by hydroxycinnamic acids, flavonoids and coumarins. Contained in the fruits of sugar beet triterpenoid saponins enhance the action of phenolic substances, creating complex system of protection of beet sprouts from the negative impact of biotic factors. The model of the functioning of biochemical regulation of seed germination and the formation around the pericarp phytoactive areas, performing the function of the protection system of seedlings from potential competitors and pathogens. A complex reaction of biological activity for water extracts of pericarp in relation to dicotyledonous plants, algae and root rots was established in the experimental data. This test can be used in the selection of sugar beet as a marker of potential resistance of genotypes to fungal and bacterial infections at the stage of seed germination.

Alpha-Mangostin-Rich Extracts from Mangosteen Pericarp: Optimization of Green Extraction Protocol and Evaluation of Biological Activity.

Since α-mangostin in mangosteen fruits was reported to be the main compound able to provide natural antioxidants, the microwave-assisted extraction process to obtain high-quality α-mangostin from mangosteen pericarp (Garcinia mangostana L.) was optimized using a central composite design and response surface methodology. The parameters examined included extraction time, microwave power, and solvent percentage. The antioxidant and antimicrobial activity of optimized and non-optimized extracts was evaluated. Ethyl acetate as a green solvent exhibited the highest concentration of α-mangostin, followed by dichloromethane, ethanol, and water. The highest α-mangostin concentration in mangosteen pericarp of 121.01 mg/g dry matter (DM) was predicted at 3.16 min, 189.20 W, and 72.40% (v/v). The verification of experimental results under these optimized conditions showed that the α-mangostin value for the mangosteen pericarp was 120.68 mg/g DM. The predicted models were successfully developed to extract α-mangostin from the mangosteen pericarp. No significant differences were observed between the predicted and the experimental α-mangostin values, indicating that the developed models are accurate. The analysis of the extracts for secondary metabolites showed that the total phenolic content (TPC) and total flavonoid content (TFC) increased significantly in the optimized extracts (OE) compared to the non-optimized extracts (NOE). Additionally, trans-ferulic acid and catechin were abundant among the compounds identified. In addition, the optimized extract of mangosteen pericarp with its higher α-mangostin and secondary metabolite concentrations exhibited higher antioxidant activities with half maximal inhibitory concentration (IC50) values of 20.64 µg/mL compared to those of the NOE (28.50 µg/mL). The OE exhibited the highest antibacterial activity, particularly against Gram-positive bacteria. In this study, the microwave-assisted extraction process of α-mangostin from mangosteen pericarp was successfully optimized, indicating the accuracy of the models developed, which will be usable in a larger-scale extraction process.

Pre-harvest root application of soluble silicon improves postharvest quality and induces antifungal compounds in bitter gourd (Momordica charantia L.)

Beneficial effects of Silicon (Si) on disease control have been shown in a number of plant pathosystems. The present study ascertained the effect of root application of soluble Si on postharvest quality of bitter gourd (Momordica charantia L.) with special reference to the disease development by Fusarium oxysporum. Plants were treated with Potassium silicate (Si+) by amending the soil mix (200 mgSi /kg soil). Treatments were started at the four leaf stage and continued up to 28 days at seven days intervals. Soil amendments with Si significantly reduced the postharvest weight loss and extended the shelf life by 2 days through delayed ripening and reduced fungal rot development. Si analysis in bitter gourds, harvested from Si + plants revealed that fruit tissues accumulated nearly1.5 times as much silicon (0.54% dry weight) as those grown in control (Si-) mix (0.36% dry weight). Extracts from Si + plants exhibited a stronger antifungal activity on thin layer chromatography (TLC) against Cladosporium cladosporioides. Methanolic extracts of fruit pericarp separated on TLC plates showed four antifungal zones at Rf 0.17, 0.51, 0.64 and 0.93. Compound separated at Rf 0.64 was observed in samples from Si + and/or challenged with F.oxysporum. Antifungal zone at Rf 0.51 was present only when Si + fruits were challenged with the fungus. These results suggest that by using soil application of soluble Si, postharvest quality of bitter gourd can be improved and shelf life can be enhanced by 2 days compared to the control. Enhanced fungitoxic activity may have some role in Si-induced disease resistance againstpostharvest fungal pathogens.

Antibacterial Activity of Constituents from Mangosteen Garcinia mangostana Fruit Pericarp against Several Channel Catfish Pathogens.

Bacterial diseases cause major financial damage to the producers of Channel Catfish Ictalurus punctatus in the southeastern USA. The two most common bacterial diseases among pond-raised Channel Catfish are enteric septicemia of catfish, caused by the gram-negative bacterium Edwardsiella ictaluri, and columnaris disease, caused by the rod-shaped, gram-negative bacterium Flavobacterium columnare. Streptococcosis is another, less-common bacterial disease in catfish and is caused by the gram-positive coccus Streptococcus iniae. Catfish farmers typically rely on commercial antibiotics and other chemicals to prevent the economic damage from these diseases. Environmentally benign and efficacious alternatives to the currently used antibiotics and chemicals will tremendously help the catfish aquaculture industry. As part of our ongoing efforts in the search for such novel compounds, we investigated ethyl acetate and methanol extracts of mangosteen Garcinia mangostana fruit pericarp via bioassay-guided fractionation. Gamma-mangostin (γ-mangostin) was isolated and identified as the most promising active metabolite against F. columnare. One of the constituents in the mangosteen fruit pericarp, alpha-mangostin (α-mangostin), is the major xanthone; α-mangostin was found to be 10-fold less active than γ-mangostin when minimum inhibitory concentration values were compared.

THE OPTIMIZATION OF ELUTING CONDITION OF SOLID PHASE EXTRACTION METHOD FOR -MANGOSTIN PURIFICATION IN MANGOSTEEN PERICARP EXTRACT

Objective: To obtain the optimum condition of eluent selection for purification of α-mangostin in mangosteen pericarp extract with solid phase extraction (SPE) method.Methods: The analysis was conducted by SPE cartridge octadecylsilane (ODS)-5, solvents used were methanol for conditioning, aqua bidestilated for washing and three different eluents for eluting: methanol, ethanol and ethyl acetate.Results: Recovery value for each eluent were 32.4741% for methanol, 46.6130% for ethanol and 33.6383% for ethyl acetate. Comparison of alpha-mangostin level in the mangosteen pericarp extract for each eluent i.e. 14.4578% for methanol, 10.0598% for ethanol, and 14.2898 % for ethyl acetate while compared to the extract without SPE was 21.7934%.Conclusion: Ethanol had the highest recovery value, compared to methanol and ethyl acetate.

Potential anti-Dengue Concoction of Carica Papaya (C. Papaya) Leaf and G. Mangostana (G. Mangostana) Pericarp and Their Bioactivity Enhancement by Fermentation: A Review

This review highlights the anti-dengue potency of Carica Papaya leaf (CPL) extract which was associated with platelet increase and other medicinal properties such as antiinflammatory and antioxidant. Garcinia Mangostana’s pericarp (GMP) extract have much commonalities with CPL, in addition to antiviral and immunomodulatory properties of the former. These properties may exhibit, yet unproven, analgesic, hemorrhage prevention and antiviral effects that may facilitate dengue recovery. Nevertheless, the limited bioavailability of native polyphenolic contents of both, as hinted by studies on colonic microbiome metabolism on dietary polyphenols, highlighted fermentation as viable method to enhance the functionality of the compounds. Thus, this review also highlights some relevant parameters in existing fermentation of well known fermented foods that impact their bioactivity, functionality and palatability that may applicable for the development of CPL and GMP fermentations.

ISOLATION OF CUCURBITACIN-B FROM CUCUMIS CALLOSUS AND ITS HYPOGLYCEMIC EFFECT IN ISOLATED RAT ENTEROCYTES

Objective: The pericarp of fruits of Cucumis callous (Rottl.) Cogn. (Cucurbitaceae) is traditionally used for curing diabetes, epilepsy, and diarrhea. It has an active compound include Cucurbitacin-B (CuB), which acts as a potent inducer of CYP450 of rat enterocytes. This study was conducted with the aim of elaborating and reconciling our previous finding on the glucose-lowering effect of Cucumis callosus (Rottl.) Cogn. fruits.Methods: In vivo hypoglycemic potential for methanolic pericarp extracts from C callosus (MPCC, 350 mg/kg b.w. p. o), methanolic seed extract of C callosus (MSCC, 250 mg/kg b.w. p. o) and CuB (80 µg/kg b.w. p. o) were studied in streptozotocin (STZ, 55 mg/kg b.w. i. p) induced diabetic rats. Metformin (25 mg/kg b.w. p. o) served as reference drug. Ex vivo model of intestinal tissue preparation of Swiss albino rats named Single Pass Intestinal Perfusion (SPIP) technique was performed for ex vivo hypoglycemic study. The glucose levels in the serosal fluid were determined by commercially available glucose oxidase kit and compared with the standard drug metformin (0.1 mg/kg).Results: In vivo results showed that administration of MPCC (350 mg/kg b.w. p. o) and Cucurbitacin-B (80 µg/kg b.w. p. o) produced the hypoglycemic effect. The MPCC (1.4 mg/kg) and CuB (0.4 µg/kg) produced hypoglycemic effect in ex vivo technique. These effects are due to induction of 0.53 mµmoles of CYP450 proteins with maximum absorption at 454 mµ in rat enterocytes.Conclusion: The present investigation gave evidence that bitter pericarp of C callosus fruit has a hypoglycemic effect due to the presence of Cucurbitacin B as phytoconstituent but seeds did not have such effects.