cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2010.676
title: Adsorption of small gases on TiO₂ and TiO₂–supported metal

description: Density functional theory (DFT) calculations have been performed to study the adsorpton of di-, tri-, and polyatomic gases on the anatase (001) and (101), rutile 001) and (110) surfaces of TiO₂-. The calculations empolying model clusters and periodic boundary conditions to detailed study the adsorption energies and adsorption geometries. It was foun that the most remarkable geommetry corresponds to the adsorption of gases diretly onto the Ti₅C site of these surfaces. The interaction between adsorbate and substrate for the anatase surface resulted weaker than that for the rutile. The hole-assisted conversion of CO to CO₂, the adsorption and conversion of N2O to N₂ on anatase TiO₂ (101) surface have been studies using first-principles calculations. The presence of the positive charge on the anatase (101) surface increases the adsorption energy of CO, allowing the it conversion of CO to CO₂ and leaving an oxygen vacancy behind. CO is found to be a good reducing agent for N₂O, in which CO is oxidized to CO₂ and N₂O is reduced to N₂ under photo-excitaton. Therefore, the results indicate that the oxidation of CO and the reduction of N₂O on the anatase (101) surface could be an efficient photocatalytic process. The investigation was extended to study the role of TiO₂-supported Pt of the anatase (101) surface (Pt/TiO₂) on the adsorption of CO, N₂, CO₂ and N₂O. It was found that the strong interaction between Pt atom and anatase (101) surface could be responsible for the enhanced adsorption of CO and CO₂.
DOI: 10.14457/cu.the.2010.677
title: Angiotensin I-converting enzyme inhibitory activity of purified proteins and peptides from the rhizomes of zingiberaceae plants

description: Angiotensin I- converting enzyme (ACE) plays a major role in the regulation of blood pressure by virtue of two different reactions that it catalyzes: conversion of the inactive decapeptide angiotensin I to a powerful vasoconstrictor and salt-retaining octapeptide angiotensin II, and inactivation of the vasodilator and natriuretic nonapeptide, bradykinin. Blood pressure-lowering activities of pure protein and pepsin hydrolysates of protein of Zingiberaceae plants were assayed in vitro by inhibition of the angiotensin I-converting enzyme. The crude protein of 15 plants in Zingiberaceae family were screened for their ACE inhibitory by in vitro ACE inhibitory activity protein was isolated from Zingiberaceae plants. Crude protein of Z. ottensi. rhizome was high activity, having IC50 of 7.30×10-7 mg protein/ml. Rhizomes proteins were isolated and then purified by stepwise eluted SP sepharose chromatography. Five unbound fractions obtained from purification step were called F25, F50, F75, and F100. The highest protein content was found in the F75 fraction. Results form native and reducing SDS-PAGE indicated that the F75 was single protein gave an estimated size of about 20.7 kDa. The tryptic fragments of the ACEI were sequenced using LC-MS/MS analysis, it resulted suggested that its amino acid sequence is similar to chitinase. The effect ACEI activity of F75 was largely stable at temperature between -20 and 60 °C (at a 30 min exposure). The pH inhibition effect of fraction F75 was negated at pH 6 and steeply reduced at pH 8 – 12. This protein exhibited a strong ACE inhibitory activity which Ki was of 9.1 × 10-5 mg protein/ml. For the analysis of peptides from Z. cassumunar which derived from pepsin hydrolysates at 37oC for 30 min possessed ACE inhibition at IC50 of 0.38±0.012 mg/ml, after fractionation by RP-HPLC was ascribed to a single peptide with IC50 for ACE inhibitory at 0.011±0.012 mg/ml. The peptide was a potent competitive inhibitor of ACE with a Ki of 1.25 × 10-6 mg protein/ml. The sequence of the peptide from Z. cassumunar was found to be Pro-Ala-Glu-Gly-His-Ser, which is similar to the mitochondrial protein sequence from Solanum tuberosum L.
DOI: 10.14457/cu.the.2010.678
title: Antimicrobial activity of seed coat extracts of Tamarind cultivars and topical preparation

description: Tamarindus indica L. has long been used as traditional medicine. Tamarind seed-coats have been found to contain flavonoid compounds. Bioactivities of flavonoids as antioxidant and antimicrobial have also been reported. This study was designed to evaluate antibacterial potential of seed-coat extracts from 8 Thai tamarind cultivars including the sour and sweet types. Tamarind seed-coats were extracted with 70% ethanol and shaken the extracts with chloroform (1:1) to extract lipids, the aqueous-ethanol extract was separated and dried. Antimicrobial activity of tamarind seed-coat extracts (TSCEs) was evaluated by agar-well diffusion and broth microdilution susceptibility tests, as well as the time-kill analysis. The results showed that all of TSCEs extracted from 8 Thai tamarind cultivars inhibited the growth of five tested bacterial strains including three of gram-positive bacteria, Staphylococcus aureus ATCC 6538P, S. epidermidis ATCC 12228, and Propionibacterium acnes (clinical isolate); two of gram-negative bacteria, Escherichia coli ATCC 25922 and Pseudomonas aeruginosa ATCC 27853. However, one of tested fungus, Candida albicans ATCC 10230, was not inhibited by TSCEs. The gram-positive bacteria were more susceptible to TSCEs inhibition than the gram-negative bacteria. Time-kill analysis demonstrated that at 0.39, 0.78 and 3.13 mg/ml of TSCEs, respectively, killed S. epidermidis, S. aureus and P. acnes in 10, 14 and 30 h, respectively. TSCEs exhibited 99% reduction of viable count of S. epidermidis and S. aureus within 4 h and P. acnes within 24 h, respectively. The TSCE from Tamarindus indica “Priao-yak” (TI-PY/P) was used as antibacterial agent for the preparation of TSCE gel for topical use. The appearances and physical properties of the finish product including color, air-bubble, viscosity, pH and antibacterial efficacy of TSCE gel were examined after freshly prepared and after stability tested. Good appearances as well as stability of the TSCE gel product were obtained. Antibacterial activity of TSCE gel was also observed against bacteria causing skin infection including S. aureus, S. epidermidis and P. acnes, as evaluated by agar-well diffusion and broth microdilution methods. The HPLC chromatogram of TSCE from the seed coats of T. indica “Priao yak” showed the chemical fingerprint of peaks that identical with the standard flavonoids including (+)-catechin, (-)-epicatechin and procyanidin B2.
DOI: 10.14457/cu.the.2010.679
title: Antioxidant activity of seed coat extracts from Tamarind cultivars and topical preparation

description: Antioxidant and preliminary studied of antibacterial activity of tamarind seed coat extracts (TSCEs) were evaluated. Three tamarind cultivars, Tamarindus indica L. "Priao", "Srichomphu" and "Sithong-nak" were collected from Nakhon-Ratchasima Province. The seed coat of each cultivar was extracted by two solvent extraction systems. Solvent in System 1 was 70% ethanol, followed with chloroform and then ethyl acetate, respectively and solvent in System 2 was 70% ethanol and washed out lipid with chloroform. The extracts were dried to powder of TSCE. Higher percent yield of TSCEs at 54-62% in System 2 was obtained compared with TSCEs (15-18%) in System 1. Chemical analyses of the total phenolic compounds, tannin and proanthocyanidin were examined. HPLC technique was used for chemical fingerprint identification of TSCEs. HPLC chromatograms of TSCE of the 3 tamarind cultivars showed the similar pattern of peaks including peaks identical with reference standard (+)-catechin, procyanidin B2 and (-)-epicatechin. Antioxidant activity of TSCEs was evaluated by DPPH radical scavenging, reducing power, hydroxyl radical scavenging and anti-lipid peroxidation assays. Vitamin C and BHA were used as positive control. The EC50 values for TSCEs by each assay were determined. The results showed that TSCEs of the three tamarind cultivars possessed high antioxidant activity compared with the positive control. Antibacterial activity of TSCEs was preliminary studied against Staphylococcus aureus ATCC 6538P and Escherichia coli ATCC 25922 by broth microdilution method. MIC and MBC values against S. aureus for TSCEs were 0.39-1.5 mg/ml and 1.56-3.12 mg/ml, respectively; and against E. coli were 3.12-6.25 mg/ml and ?25 mg/ml, respectivel. TSCE of Tamarindus indica "Priao" in System 2 was used to develop a preparation of TSCE cream for topical application. TSCE creams with 100, 300, 500 mg TSCE/100 g cream were successfully developed. Antioxidant activity of TSCE cream products was evaluated by DPPH radical scavenging assay. The result showed that TSCE creams possessed high percentage of scavenging activity in comparison with vitamin C and TSCE reference.
DOI: 10.14457/cu.the.2010.680
title: Antioxidants composition, antioxidant activities and storage stability of pigmented rice brans and their application as food ingredient in wheat bread

description: One red rice and 3 black rice samples were identified and quantified their antioxidant compounds compared with normal rice in different milling fractions. Bran was the milling fraction containing major portion of rice antioxidants. On average, bran contained 7 and 62 times of total antioxidants content higher than unmillled and milled fraction, respectively. The antioxidants content in black rice was higher than in red and normal rice. The highest antioxidant content was found in black rice bran no.1. The major anthocyanins of pigmented rice were cyanidin-3-glucoside and peodinin-3-glucoside. Cyanidin-3-glucoside was the major anthocyanin found in all pigmented rice samples, the percentage of which was 90-95% (except black rice no.2; 58%). Most of phenolic acids in rice were bound phenolic. Six phenolic acids were detected in this study including gallic, protocatechuic, hydroxybenzoic, p-coumaric, ferulic, and sinapic acids. Black rice contained higher contents of protocatechuic and hydroxybenzoic acids than red and normal rice. The methanolic extracts of rice bran samples showed high antioxidant activities in all measurements which were the determination of DPPH radical scavenging activity, reducing power and lipid peroxidation inhibition. The antioxidant effects of pigmented rice are related to their phenolic pigments in the bran. Rice brans were studied for their potential as food used by adding into wheat bread. Brans from normal, red and black rice no.1 were selected to substitute with wheat flour at 5 and 10%, compared with traditional bread as a control. Addition of rice bran increased G’ (storage modulus) and G” (loss modulus) of bread doughs and also decreased the deformation of creep test. All wheat bread added rice bran (WRB) showed higher antioxidant activities than control. Rice antioxidants were retained in bread after baking especially γ-oryzanol which lost only 16-34% by baking. Cyanidin-3-glucoside was detected in black rice bran added breads and lost by 82-89% after baking. 5%WRB showed no adverse effect on baking qualities. However, addition of rice bran at 10% reduced specific volume and increased crumb firmness of final bread products. Stabilization of rice bran by using opened steam heating was able to deactivate lipase enzyme in rice bran and after 2 months of storage, stabilized rice bran contained &lt;10% of free fatty acid. Stabilization destroyed rice bran antioxidants especially black rice bran which lost 80-100% of their anthocyanins. During storage at ambient temperature in cloth bags, α-tocopherol showed the highest degradation rate constant as compared to other antioxidants. Black rice bran retained high antiradical and antioxidant activities throughout the storage at ambient temperature.
DOI: 10.5061/dryad.427c0pr/1
title: Dryad Item 10.5061/DRYAD.427C0PR/1

description: (:tba)
DOI: 10.5061/dryad.427c0pr/2
title: Dryad Item 10.5061/DRYAD.427C0PR/2

description: (:tba)
DOI: 10.7910/dvn/8a1xo3/07nzfh
title: cantaloupe-angle-90-trial-5.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/4csodc
title: broccoli-angle-90-trial-7.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/4ldmfj
title: broccoli-angle-0-trial-4.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/4vlud5
title: cauliflower-angle-0-trial-3.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/4xczjh
title: pepper-angle-0-trial-4.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/5wksgl
title: grape-angle-0-trial-2.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/a7jihu
title: apple-angle-0-trial-1.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/aqerhc
title: pepper-angle-0-trial-2.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/cp3qvw
title: broccoli-angle-0-trial-7.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/fchcip
title: honeydew-angle-0-trial-2.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/h32dcf
title: honeydew-angle-90-trial-1.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/j4bzmj
title: cauliflower-angle-90-trial-4.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/kezjfm
title: spinach-angle-0-trial-7.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/mihtaj
title: spinach-angle-0-trial-5.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/mm8a0n
title: apple-angle-90-trial-1.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/mw0eg5
title: spinach-angle-0-trial-2.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/mwf8ly
title: red_grape-angle-0-trial-3.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/no6ari
title: honeydew-angle-90-trial-1.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/ogm488
title: strawberry-angle-0-trial-0.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/ogpjvs
title: apple-angle-0-trial-9.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/rkdj0r
title: grape-angle-0-trial-6.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/s6edkz
title: honeydew-angle-0-trial-2.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/shx79a
title: apple-angle-0-trial-4.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/tojtb1
title: lettuce-angle-0-trial-7.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/tqi0rd
title: strawberry-angle-90-trial-3.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/ud4j8p
title: strawberry-angle-0-trial-7.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/vdscv6
title: spinach-angle-0-trial-5.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/vqmrpr
title: honeydew-angle-0-trial-7.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/vuwwpv
title: spinach-angle-0-trial-0.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/w681g5
title: red_grape-angle-90-trial-2.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/xiufv9
title: celery-angle-90-trial-4.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/y5rpqi
title: apple-angle-0-trial-4.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/yggtkv
title: pepper-angle-0-trial-0.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/zisw6s
title: strawberry-angle-90-trial-3.zip

description: :unav
DOI: 10.7910/dvn/8a1xo3/zqr29d
title: banana-angle-0-trial-4.zip

description: :unav
DOI: 10.14457/cu.the.2010.681
title: Application of superparamagnetic mesoporous silicates on nalidixic acid removal

description: The main objective of this research is to evaluate removal efficiency of nalidixic acid (NAL) residues in synthetic wastewater at high concentration (0-30 mg/L) by adsorption on functionalized superpapramagnetic mesoporous silicates (F-HMS-SP) and to study effect of magnetic field on cake formation of adsorbents removal by ultrafiltration(UF). Five types of surface functional groups (3-aminopropyltrimethoxy-, 3-mercaptopropyltrimethoxy-, n-octyldimethyl-, 4-triethoxysilyl butyronitrile- and phenyltrimethoxy functional group) were grafted on pristine superpapramagnetic mesoporous silicates (HMS-SP) via post-grafting method denoted as A-HMS-SP, M-HMS-SP, OD-HMS-SP, N-HMS-SP and PTM-HMS-SP respectively. NAL adsorption kinetic of all adsorbents were compatible with the pseudo-second order model and implied the intraparticle diffusion as a rate limiting step. Hydrophobic surface of OD-HMS-SP and PTM-HMS-SP provided highest adsorption capacity comparing with hydrophilic adsorbents; however, it was still lower than PAC. Moreover, electrostatic interaction played an important role for NAL adsorption mechanism. Greatly reduction of cake resistance (Rc) was observed due to magnetic system which caused a slow-down of the cake built-up. Moreover, electrostatic interaction between adsorbent and membrane surface was found to affect on Rc value. The presence of NAL adsorbed on F-HMS-SP can affect electrostatic interaction between adsorpbent and UF membrane surface.
DOI: 10.14457/cu.the.2010.682
title: Application of superparamagnetic mesoporous silicates on naproxen removal

description: Adsorption of Naproxen (NAX), non-steroidal anti-inflammatory drug (NSAID), by using superparamagnetic hexagonal mesoporous silicates (HMS-SP) in synthetic wastewater at high concentration (0.5 – 10 mg/L) was investigated. Five different types of adsorbents were synthesized by surfactant templating method, and modified surface functional group with silanol, 3-aminopropyltriethoxy-, 3-mercaptopropyl-, phenyltrimethoxy- and butyronitrile- groups by co-condensation method that denoted as HMS-SP, A-HMS-SP, M-HMS-SP, P-HMS-SP and N-HMS-SP, respectively. Kinetic adsorptions of all synthesized adsorbents were fitted well with pseudo-second-order equation. Adsorption isotherms were best matched with linear model, Fruendlich model and Langmuir model. P-HMS-SP had highest adsorption capacity following with M-HMS-SP, N-HMS-SP, HMS-SP and A-HMS-SP, but still lower than PAC. Hydrophobic adsorbents had higher adsorption capacity of NAX than hydrophilic adsorbents. High Gradient Magnetic Separation filter (HGMS filter) was applied to separate adsorbent particle from treated water. Effect of bed depth, flow rate, surface area of stainless filer and concentration of particle influenced on the breakthrough curve. The breakthrough time was increasing by extending bed depth of stainless filter and decreasing flow rate and particle concentration. Moreover, application of BDST model can be matched with HGMS filter, due to high correlation coefficient. Nevertheless, BDST model cannot apply with changing flow rate and particle concentration. Electrostatic interaction can affect NAX adsorption capacities of adsorbents, except for A-HMS-SP and HMS-SP. High Gradient Magnetic Separation filter (HGMS filter) was applied to separate adsorbent particle from treated water. Effect of bed depth, flow rate, surface area of stainless filer and concentration of particle influenced on the breakthrough curve. The breakthrough time was increasing by extending bed depth of stainless filter and decreasing flow rate and particle concentration. Moreover, application of BDST model can be matched with HGMS filter, due to high correlation coefficient. Nevertheless, BDST model cannot apply with changing flow rate and particle concentration.
DOI: 10.14457/cu.the.2010.683
title: Assessment of performance of supplementary feeding program for under-five children in three temporary shelters in Tak province, Thailand

description: To assess the performance of the Supplementary Feeding program being implemented by health agencies, as well as to identify areas that needed improvements to ensure better quality service delivery implemented in three temporary shelters among under-five children of Tak Province, Thailand. A mix method cross-sectional study including secondary data on 1,079 children aged between 6 and 59 months enrolled in supplementary feeding programs of three temporary shelters in Tak Province, Thailand, between 2009 and 2010 were analyzed and in-depth interviews were conducted with health care providers and mothers/caregivers from all three temporary shelters. Data analysis was done by using SPSS V. 16, chi-square test and content analysis. The results shows that out of 1,079 children included in this study, 51.9% were male and 48.1% were female. Similarly 57.18% were among 6-24 months and 42.82% were among 25-59 months age groups. The overall cure rate was 39.2 % (SPHERE standard &gt;75%), defaulter rate was 15.8% (SPHERE standard&lt;15%). There were no deaths recorded due to malnutrition. The highest cure rate was found in Nu Poh (61.7%) and lowest cure rate was in Mae La (18.1%). Highest proportion of defaulter was in Mae La and Umpiem Mai (20%) and Nu Poh (5.2%) had lowest defaulter rate. The assessment of performance of supplementary feeding programs in three temporary shelters in Tak Province has shown all outcome indicators below the SPHERE standard. Training to health workers on case management, record keeping and nutrition education and community nutrition education was suggested.
DOI: 10.14457/cu.the.2010.684
title: Bioactive compounds from the vine of Ficus foveolata Wall.

description: This is the first report in the chemical constituent investigation from the vine of Ficus foveolata Wall. Ten compounds were isolated from the dichloromethane and butanolic extracts using chromatographic methods. Physical properties and spectroscopic evidences led to the structural elucidation of all isolated compounds as resveratrol (1), isorhapongetin (2), pinosylvin (3), gnetol (4), 24-hydroxy-tetracosyl ferulate (5), a mixture of 1,22-docosanediol diferluate and 1,24-tetracosanediol diferulate (6), galangin 3-methyl ether (7), tectochrysin (8), 5-hydroxy-3,7-dimethoxyflavone (9), quercetin (10). Among them, 1,22-docosanediol diferluate was characterized as a new naturally occurring compound. Moreover, all isolated compounds were further evaluated their biological activities; anticholinesterase, anti-α-glucosidase and anti-inflammatory activities. The results found that gnetol (4) exhibited the high selectivity on butyrylcholinesterase (BChE) over acetylcholinesterase (AChE). The IC50 value of compound 4 toward BChE was 1.27 M which 20 folds higher than standard galanthamine. In addition, quercetin (10) and gnetol (4) showed strong α-glucosidase inhibitory effects with IC50 values of 5.62 and 17.21 M, respectively. Both showed 40 and 120 folds higher than those of standard acarbose, respectively. Of isolated compounds, quercetin (10) was significantly potential inhibition on the nitric oxide production in macrophages at concentration of 5 µg/mL.