bluuebunny/crossref_metadata_2025_split huggingface dataset:
Antioxidant activity of acerola extracts
Authors: Nagamine I. , Sakurai H. , T T Nguyen H. , Miyahara M. , Parkányiová J. , Réblová Z. , Pokorný J. 
Published: February 2018

West Indian cherries or acerola fruits (Malpighia glabra L.) are very rich in ascorbic acid, and also contain flavonoids and anthocyanins. Therefore, their antioxidant activity is interesting. Aqueous and methanolic acerola extracts increased the stability of β-carotene-linoleic acid emulsions against oxidation. Flavonoids and anthocyanins obviously enhanced the effect of ascorbic acid. The effect of natural acerola antioxidants was comparable to that of phenolic antioxidants, such as ferulic acid. During the determination of antioxidant activity in emulsions, carotene was destroyed following a complex kinetics in the beginning of oxidation, but the zeroth order kinetics in later stages of oxidation.
Red wine as resveratrol protective system -
Authors: Kolouchová I. , Zámostný P. , Bělohlav Z. , Melzoch K. , Siříšťová L. 
Published: February 2018

The study describes an isomerization of trans-resveratrol exposed to diffused daylight in dependence on temperature and character of liquid sample (type of solvent, wine …). These effects were investigated using the reverse-phase-HPLC method. Trans-resveratrol isoform was light sensitive and under daylight isomerized to cis-isoform very easily. The exposition of trans-resveratrol solution by higher temperatures did not induce isomerization reaction if that was kept in dark. The wines were analyzed immediately after opening (0 hour), and again after 48 hours and after 17 days. The concentration of resveratrol in tested red wines was stable at 4°C, under room temperature the total amount of resveratrol in all cases increased.
Study of irradiated black pepper antioxidant activity changes
Authors: Suhaj M. , Rácová J. 
Published: February 2018

Some antioxidant activities of extracts of irradiated black pepper (Piper nigrum) were evaluated. The ground black pepper was exposed to gamma-irradiation at doses from 5 to 30 kGy. The effect of irradiation on antioxidant properties of black pepper extracts was investigated by these methods: radical scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, determination of reducing power, thiobarbituric acid reactive substances assay and electron paramagnetic resonance spectroscopy (EPR). Irradiation resulted in a decrease of DPPH antiradical activity of black pepper extracts according to dose of irradiation. Reducing power was not changed by action of irradiation. Very important and sensitive differences in antioxidant activity of irradiated black pepper were investigated by EPR spectrometry and thiobarbituric acid method.
Antioxidant and pro-oxidant activity of coffee as affected by torrefacto roast
Authors: López-Galilea I. , Andueza S. , P de Peña M. , Cid C. 
Published: February 2018

The addition of sugar at the end of the torrefacto roasting process could influence on the antioxidant and pro-oxidant properties of coffee because sugar is one of the main precursors of Maillard reaction. The aim of the work was to study and compare the antioxidant and pro-oxidant properties of some commercial roasted coffees which are selected to represent conventional roasted coffee and torrefacto roasted blends. When the percentage of torrefacto coffee was increased, the antioxidant activity increase and a slight tendency to decrease the pro-oxidant activity were observed. Moreover, a principal component analysis allowed to separate (a) brands by PC1 (46.9%) characterised by colour parameters defined by roast degree, and (b) torrefacto roast blends by PC2 (33.7%) characterised by antioxidant/pro-oxidant activity.
Chitin-glucan complex from Agaricus blazei, a potential raw material for production of food additives
Authors: Blafková P. , Synytsya A. , Čopíková J. 
Published: February 2018

Agaricus blazei, a mushroom native to Brazil, is a perspective source for food industry. This mushroom has been widely used in folk medicine due to its possible medicinal value. The most important components of fruiting bodies of A. blazei are specific β-glucans with β-(1→3), β-(1→4) andβ-(1→6) glycosidic linkages. These polysaccharides are supposed to be responsible for some healthy properties of mushrooms (anticarcinogenic and antimutagenic ones). β-Glucans are associated with chitin forming water-insoluble chitin-glucan complex. This complex was isolated from fresh and dried mushrooms (separately from caps and stems) by alkali treatment using NaOH solution at 9°C for 2 h. The structure of chitin-glucan complex was analysed by diffuse reflectance FT-IR spectroscopy. β-Glucans were also analysed by Megazyme enzymatic method based on exo-1,3-β-glucanase and β-glucosidase catalysed hydrolysis and photometric determination of the released glucose.
Formation and decomposition of 3-chloropropane-1,2-diol in model systems
Authors: Doležal M. , Calta P. , Velíšek J. 
Published: February 2018

Model experiments were carried out using mixtures of 3-chloropropane-1,2-diol (3-MCPD), its precursor glycerol, NaCl, water and an emulsifier. The aim of this study was to simulate formation and decomposition of 3-MCPD at the surface layers of thermally processed foods containing naturally present or intentionally added salt. The formed 3-MCPD levels depend on temperature and reach the maximum value at 230°C. One kg of glycerol gives rise to about 50 mg of 3-MCPD, while about 0.6 mg of 3-MCPD arise at 100°C. The rate constants k<sub>1</sub> of 3-MCPD formation from glycerol and constants k<sub>2</sub> of 3-MCPD decomposition were calculated employing the first order reaction kinetics. The rate constants k<sub>2</sub> of 3-MCPD degradation are higher than the respective constants of its formation. Other kinetic parameters (time of maximum concentration) were also calculated and the achieved results were discussed with respect to levels of 3-MCPD in foods.
Changes of acrylamide levels in food products during technological processing
Authors: Dunovská L. , Hajšlová J. , Čajka T. , Holadová K. , Hájková K. 
Published: February 2018

Acrylamide represents toxic compound presence of which in heat processed foodstuffs has been proven only recently. This chemical is of a great health concern since it is classified as a human carcinogen by the International Agency for Research on Cancer (IARC). Relatively high amounts of acrylamide have been found mainly in starch rich foods such as potato chips, French fries, roast potatoes, breakfast cereals and crisp bread. Concentrations of this hazardous substance in certain food products may reach up to several mg/kg, depending on the type of raw commodity and the way of its processing. Changes of acrylamide levels in potato chips during frying process were monitored in our study. New analytical procedure employing gas chromatography coupled with high resolution time of flight mass spectrometry (GC/HRTOF-MS) was developed for this purpose. The major factors that affect acrylamide levels in chips such as asparagine and reducing sugars (the main precursors of acrylamide) content in raw potatoes as well as the processing conditions setting (time and temperature) were monitored. Under experimental conditions we used, rapid formation of acrylamide occurred after 150 s, temperature of oil bath was approx. 140°C at that time. In overfried chips the levels of acrylamide exceeded 10 mg/kg.
Determination of free amino acid and biogenic amine contents of hungarian sparkling wines
Authors: Simon-Sarkadi L. , Szőke E. , Kerekes A. 
Published: February 2018

Comparative study was conducted on the basis of free amino acids and biogenic amines of Hungarian sparkling wines originated from 3 producers (Törley, Hungária, Balaton Boglár). Determination of amino acids and biogenic amines was accomplished by ion-exchange chromatography using an amino acid analyser. The dominant free amino acids in sparkling wines were proline and arginine and the major biogenic amine was spermidine. Based on results of chemometric analyses, free amino acid and biogenic amine contents seemed to be closely related to quality and the technology of sparkling wine making.
Rapid, sensitive and selective analysis of acrylamide in cereal products using bromination and GC/MS/MS
Authors: G Hamlet C. , M Jayaratne S. , A Sadd P. 
Published: February 2018

A rapid and sensitive method has been developed and validated for the analysis of acrylamide in cereal products. A kinetic study showed that a quantitative bromination of acrylamide in cereal extracts could be achieved within 25 min at room temperature. By using GC/MS/MS an increase in signal to noise of between 70 to 100 could be achieved for samples with minimal clean up compared to conventional selected ion monitoring. Results obtained from the analysis of a FAPAS cereal test material showed good agreement with the assigned value.
Influence of high pressure and papain treatment on some aspects of beef meat quality
Authors: Schenková N. , Šikulová M. , Jeleníková J. , Pipek P. , Marek M. , Voldřich M. 
Published: February 2018

Influence of post-rigor injection of papain solution and/or high pressure treatment (100, 200, 300 MPa for 10 min) on the quality of beef meat (musculus longissimus lumborum et thoracis) was studied in terms of texture, microbial quality and some physico-chemical parameters (pH, drip loss, water holding capacity). Injection of papain and pressurisation to 100 MPa led to a significant increase of meat tenderness. Application of higher pressures did not lead to further tenderisation. After the 300 MPa pressure treatment the total flora of pressurised compared to untreated samples decreased of 2.5 log cycles.
FFA Evolution during storage of ground roasted coffee
Authors: Vila M. , P dePeña M. , Cid C. 
Published: February 2018

Coffee acylglycerols hydrolysis and free fatty acids (FFA) oxidation reactions produce a FFA evolution that can affect to coffee quality during storage. The aim of this work was to study and to compare the FFA evolution of two ground roasted coffee samples: Brazilian Arabica 100% (A100) and Brazilian Arabica-India Cherry Robusta blend (A80:R20). Coffees were packaged under vacuum and stored at 25°C during 180 days. A significantly higher FFA initial concentration in A80:R20 coffee was observed. However, at 180 days, a higher increase of FFA concentration was shown in A100 sample. In conclusion, FFA oxidation seemed to be faster in A80:R20 blend than in A100.
AVALIAÇÃO DA LIBERAÇÃO DE CO2 EM SOLO COM ADIÇÃO DE ÁGUAS RESÍDUARIAS SUÍNICOLAS E IMPACTOS AMBIENTAIS E SOCIAS DA SUINOCULTURA
Authors: Toniazzo Fabiane , Becegato Valter Antonio , Lavnitcki Laís , Rosa Marcia Matsuoka , Baum Camila Angélica , Cantoni Fernanda , Rodrigues Alexandre Couto , Henkes Jairo Afonso , Da Ros Clovis Orlando 
Published: February 2018

A região sul do Brasil registra os maiores índices de abate de suínos, concentrando um grande número de produtores, dentre eles aqueles pertencentes à agricultura familiar, bem como grandes produtores e agroindústrias. Tal atividade tornou-se extremamente importante do ponto de vista econômico e social, porém junto com sua expansão vieram diversos impactos ambientais. O objetivo deste trabalho foi avaliar a atividade microbiológica através da respiração basal de um solo com adição de compostos oriundos de tratamentos de dejetos da suinocultura relacionando-a com os impactos ambientais resultantes da geração de gases do efeito estufa produzidos em propriedades suinícolas no noroeste gaúcho. Para análise microbiológica utilizou-se um solo Latossolo Eutroférrico como testemunha que recebeu dejeto suíno e/ou resultantes de sistemas distintos de tratamento. Realizou-se cinco tratamentos com cinco repetições em triplicata (solo testemunha, solo+dejeto bruto, solo+dejeto de esterqueira, solo+material de biodigestor e solo+material da compostagem mecanizada). Os dados foram avaliados estatisticamente pelo teste T de Student. As adições de compostos orgânicos normalmente causam variações nos índices de respiração basal do solo, sendo possível observar que durante o período de monitoramento houve diferenças significativas na liberação de CO2, causando assim um elevado percentual no coeficiente de variação das amostras. A produção destes, e outros gases como o metano podem causar sérios danos ambientais e à saúde humana. Com isso é possível verificar que os compostos orgânicos de todos os sistemas de tratamento podem ser utilizados como ativadores da ação microbiológica do solo com restrições.
Muslim Feminist Hermeneutical Method to the Qur'an (Analytical Study to the Method of Amina Wadud)
Authors: Riyani Irma 
Published: February 2018

Muslim feminist hermeneutical methods to the Qur’an is a response to the conservative interpretations which hegemonizes knowledge construction to shape the tradition and the methodology of the patriarchal reading of the texts. This approach demonstrates that the Qur’an is compatible with modernity and supports gender equality. This article explores one of the leading Muslim feminisit scholar, Amina Wadud, and examines her Qur’an feminist hermeneutical method. Amina Wadud is a Muslim feminist who proposes feminist hermeneutical method to interpret the Qur’an which she called ‘tawhidic paradigm.’ This article shows that Wadud’s hermeneutical approach interrogates the patriarchal reading of the Qur’anic verses that privileges one sex over another. According to her, in understanding the Qur’an three principles should be considered, namely: first, the context in which the Qur’an was revealed; second, the grammatical composition of the text; and third, the whole text, that is its weltanschauung or world-view.
SELEKSI ATRIBUT PADA ALGORITMA C4.5 MENGGUNAKAN GENETIK ALGORITMA DAN BAGGING UNTUK ANALISA KELAYAKAN PEMBERIAN KREDIT
Authors: Bahri Saeful 
Published: February 2018

<p><em>According to the banking ACT No. 9 of 1992 is the provision of credit or money bills which can dipersama-kan with it, based on the approval of an agreement between the bank pinjam-meminjam with other parties that require that the borrower to pay off a loan after a certain period of time with the giving of flowers. Credit analysis aims to evaluate the customer able to or not in fulfilling obligations. In analyzing the sometimes an analyst is not accurate in analyzing causing bad credit. Of the problems that existed then used a method of classification for an analysis of the feasibility of granting credit using a model algorithm Genetic Algorithm with C4.5 (AG) as a selection of attributes and bagging method to improve accuracy. After testing two models namely algorithm C4.5 and C4.5 with Genetic Algorithms (AG) and the results obtained bagging method is the algorithm C 4.5 produces a value accuracy 93,47% and AUC values 0,932 with excellent levels of Clasification diagnose but after Genetic Algorithm added (AG) and increased accuracy value bagging 2.87% to 96,34% and AUC values increased 0.044 became 0.976</em><em>.</em></p><p><em><strong>Keywords</strong></em><em>: </em><em>Credit, the algorithm C 4.5, Genetic Algorithms (GA), Bagging</em></p><p><em>Menurut UU Perbankan No.9 Tahun 1992 kredit merupakan </em><em>penyediaan uang atau tagihan yang dapat dipersama-kan dengan itu, berdasarkan persetujuan atau kesepakatan pinjam-meminjam antara bank dengan pihak lain yang mewajibkan pihak peminjam untuk melunasi utangnya setelah jangka waktu tertentu dengan pemberian bunga. Analisa kredit bertujuan untuk mengevaluasi nasabah mampu atau tidak dalam memenuhi kewajiban. Dalam menganalisa terkadang seorang analis tidak akurat dalam menganalisa sehingga menyebabkan kredit macet. </em><em>Dari permasalahan yang ada maka digunakan sebuah metode klasifikasi untuk analisis kelayakan pemberian kredit menggunakan model algoritma C4.5 dengan Algoritma Genetika (AG) sebagai seleksi atribut dan metode bagging untuk meningkatkan akurasi. Setelah dilakukan pengujian dua model yaitu algoritma C4.5 dan C4.5 dengan Algoritma Genetika (AG) dan metode bagging hasil yang diperoleh adalah algoritma C4.5 menghasilkan nilai akurasi 93,47 % dan nilai AUC </em><em>0,932 dengan tingkat diagnose excellent Clasification namun setelah ditambahkan Algoritma Genetika(AG) dan bagging nilai akurasi meningkat 2,87% menjadi 96,34 % dan nilai AUC meningkat 0.044 menjadi 0.976</em><em>.</em></p><p><em><strong>Kata kunci</strong></em><em>: </em><em>Kredit, Algoritma C4.5, Algoritma Genetika (AG), Bagging</em></p><p><em><br /></em></p>
Synthesis and Characterization of C, SnO2, and C+SnO2 Materials through Resistance Measurement, UV-Visible Spectroscopy, and X-Ray Diffraction
Authors: Rahmasari Nabila , Fathia Azka , Dwandaru Wipsar 
Published: February 2018

The objectives of this study are i) to determine an electrical property, especially resistance, of carbon (C), tin oxide (SnO2), and C+SnO2 thin films. ii) to determine the optical property of C, SnO2 and C+SnO2 thin films based on UV-visible spectroscopy (UV-Vis). and iii) to determine the crystallinity of C, SnO2 and C+SnO2 thin films based on X-ray diffraction (XRD). The results show different physical characteristics from the three samples of the thin film layers. The result on the resistance measurement shows that C thin film has the lowest resistance, followed by SnO2, and C+SnO2 thin films with resistance values of 1.0769 mΩ, 1.0774 mΩ, and 3.8875 mΩ, respectively. The UV-Vis results show a peak for each of the thin film at 256 nm, 257 nm, and 258 nm for C, SnO2, and C+SnO2, respectively, which is in the UV area. The XRD results show that the C and SnO2 thin layers are amorphous while C+SnO2 thin layer is crystal
Alternative of Visual Based Learning (VBL) Method Based on Short Duration Video for The Instrumental Chemistry Subject in Chemistry Department
Authors: Riyanto Riyanto , Febriana Beta Wulan 
Published: February 2018

ABSTRACT:There had been done a study of Visual Based Learning (VBL) method based on Short Duration Video for Instrumental Chemicals Subject in Chemistry Study Program of Mathematics and Natural Sciences Faculty (MNSF), Islamic University of Indonesia (Universitas Islam Indonesia—UII). VBL method is carried out by creating a short duration video about an instrument according to the syllabus of instrument 1 subject such as AAS, UV-Vis Spectrophotometer, FTIR, GC-MS, and CV. In order to determine the effect of VBL method using, an analysis of scores obtained between the experimental class and the control class is used. To determine the effect of VBL on psychomotor ability is done by observing directly when students do an experiment or practicum. The influence of VBL method application on student motivation was studied by using questionnaire. The results pointed out that the data of both samples (both classes) is homogeneous. T-test results: Two-Sample Assuming Equal Variances showed that there is a significant difference in the final scores mean between the experimental class and the control class. Based on the mean score it indicates that the VBL method is better while compared to the learning method without VBL. VBL method has a significant effect on students motivation andpsychomotor ability when it is viewed from observation of practicum and the score of practicum. The conclusion is that the VBL method is able to increase students' motivation and psychomotor ability in the Instrumental Chemistry subject.
Pentecostalismo e ecumenismo: algumas observações
Authors: Da Rosa André Luís 
Published: February 2018

Num primeiro momento, a partir de uma visão fundamentada no senso comum, muitos afirmam que o pentecostalismo não possui relação alguma com o ecumenismo. Todavia, fazendo um resgate das origens desse movimento, percebe-se que sua espiritualidade era ecumênica e ainda há nela elementos que podem contribuir com o ecumenismo. Assim, para demonstrar essa ideia, se apresentará, primeiramente, alguns dados sobre a origem ecumênica do pentecostalismo e, na sequência, o fechamento do mesmo ao movimento ecumênico em sua história. Por fim, vai-se apresentar algumas participações e iniciativas pentecostais em movimentos ecumênicos e algumas reflexões de teólogos pentecostais latino-americanos que tem discutido a questão da relação entre o pentecostalismo e o ecumenismo.In a first moment, from a view based on the common sense, many people claim that the pentecostalism is not in any way related with the ecumenism. However, turning back to the origins of this movement, it is possible to realize that its spirituality was ecumenic and it still has elements that can contribute with the Ecumenism. So, to demonstrate this idea, it will be introduced, firstly, a few data about the ecumenic origin of the Pentecostalism and, secondly, its restriction to the ecumenic movement in its history. Finally, it will be introduced examples of participations and initiatives of Pentecostals in the ecumenic movements and some reflections of Latino American Pentecostal theologians who have discussed the relation between pentecostalism ans ecumenism. .
Understanding Regional Building Characteristics in Yangon Based on Digital Building Model
Authors: Murao Osamu , Usuda Takuma , Gokon Hideomi , Meguro Kimiro , Takeuchi Wataru , Sugiyasu Kazuya , Yu Khin Than ,   International Research Institute of Disaster Science, Tohoku University 468-1 Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan,   Former Graduate School Student, Graduate School of Engineering, Tohoku University,   Institute of Industrial Science, The University of Tokyo, Japan,   Yangon Technological University, Myanmar
Published: February 2018

It is indispensable for a government to assess urban vulnerability to natural disasters such as earthquakes or flood in order to take appropriate disaster measures. However, it is sometimes difficult to obtain necessary dataset for cities or regions, especially for developing countries. The authors have been involved in a SATREPS project named “Development of a Comprehensive Disaster Resilience System and Collaboration Platform in Myanmar,” which aims to make urban vulnerability maps for Yangon City based on several datasets including building inventory of each ward. However, Yangon City has not catalogued enough data for the assessment so far. In this context, in order to understand and to arrange regional building characteristics of the city, this paper explores the possibility of using digital building model (DBM) data obtained from remote sensing imageries for the urban vulnerability assessment.
Firstly, a field survey was conducted in Sanchaung Township, and building characteristics such as structural types and the number of stories were analyzed. Therefore, DBM data was prepared for the following comparative analysis. Thirdly, additional field surveys were conducted in Latha and Pabedan Townships, located in the central business districts in the city. Finally, DBM data and the actual building data obtained by the surveys were compared to examine the applicability of DBM for building collapse risk assessment. As a result, it was found that DBM data of 3 m- 7 m represent low-rise buildings, and DBM data of more than 18 m reflect high-rise buildings.