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Open access

Li Wang, Hua-Min Liu, Ai-Jun Xie, Chun-Yan Zhu and Guang-Yong Qin

Abstract

Corn hulls were abundant and inexpensive byproducts of the corn dry or wet milling processes, but most of them were discarded as agro-wastes. The aim of this study was to extract the dietary fiber by hot-compressed water (HCW) from defatted corn hull and to determine the chemical properties. Results showed that temperature and time played critical roles in extraction efficiency; the maximal yield of dietary fiber A (DFA) extracted by HCW reached 33.0% at 150°C for 60 min. The yield of dietary fiber B (DFB) increased from 2.0% to 56.9% as the temperature increased from 110 to 180°C, while the yield of solid residue (SR) decreased from 88.7% to 27.7%. Fourier transform infrared spectroscopy (FT-IR) results demonstrated that C-H, O-H, C=O, COO- occurred in the DFA, SR and DFB. The dietary fiber polysaccharides consisted of arabinose, galactose, glucose, xylose and uronic acid.

Open access

Inga Zinicovscaia, Alexey Safonov, Varvara Tregubova, Victor Ilin, Liliana Cepoi, Tatiana Chiriac, Ludmila Rudi and Marina V. Frontasyeva

Abstract

Spirulina platensis biomass is widely applied for different technological purposes. The process of lanthanum, chromium, uranium and vanadium accumulation and biosorption by Spirulina platensis biomass from single- and multi-component systems was studied. The influence of multi-component system on the spirulina biomass growth was less pronounced in comparison with the single-component ones. To trace the uptake of metals by spirulina biomass the neutron activation analysis was used. In the experiment on the accumulation the efficiency of studied metal uptake changes in the following order: La(V) > Cr(III) > U(VI) > V(V) (single-metal solutions) and Cr(III) > La(V) > V(V) > U(VI) (multi-metal system). The process of metals biosorption was studied during a two-hour experiment. The highest rate of metal adsorption for single-component systems was observed for lanthanum and chromium. While for the multi-component system the significant increase of vanadium and chromium content in biomass was observed. In biosorption experiments the rate of biosorption and the Kd value were calculated for each metal. Fourier transform infrared spectroscopy was used to identify functional groups responsible for metal binding. The results of the present work show that spirulina biomass can be implemented as a low-cost sorbent for metal removal from industrial wastewater.

Open access

Werner Brueller, Norbert Inreiter, Thomas Boegl, Martin Rubasch, Samim Saner, Franko Humer, Wolfgang Moche, Andrea Schuhmann, Werner Hartl, Christoph Brezinka, Ludwig Wildt and Franz Allerberger

triiodothyronine (T3) to thyroid hormone receptors (TRs) and suppress T3 actions; b) In vivo, bisphenol A can impair thyroid hormone action by antagonizing T3-induced TR activation (TRα1 and TRβ1) and by suppressing its transcriptional activity in a dose-dependent manner; c) Triclosan affects thyroid hormone-dependent metamorphosis in animals; d) Urinary phthalates are cross-sectionally associated with lower free thyroxine (fT4) and higher thyroid stimulating hormone (TSH); e) PFASs interfere with binding of thyroid hormone to transthyretin and upregulate deiodinase in the

Open access

V. Machovič, L. Lapčák, M. Havelcová, L. Borecká, Mi. Novotná, Ma. Novotná, I. Javůrková, I. Langrová, Š. Hájková, A. Brožová and Dalibor Titěra

, 32, 1577-1583. Iconomidou JA, Chryssikos GD, Gionis V, Willis JH, Hamodrakas SJ (2001): ‘Soft’-cuticle protein secondary structure as revealed by FT-Raman, ATR FT-IR and CD spectroscopy. Insect Biochemistry and Molecular Biology, 31, 877-885. Kaya M, Mujtaba M, Bulut E, Akyuz B, Zelencova L, Sofi K (2015): Fluctuation in physicochemical properties of chitins extracted from different body parts of honeybee. Carbohydrate Polymers, 132, 9-16. Kong J, Yu S (2007): Fourier transform infrared spectroscopic

Open access

Gabriela Barančíková and Tadeáš Litavec

Science Publishers, Inc., pp. 123. ISBN 978-1-61668-965-0. MALCOLM, M.L. 1990. The uniqueness of humic substances in each of soil stream and marine environments. In Analytica Chimica Acta , vol. 232 , pp.19‒30. MAO, J. ‒ OLK, D.C. ‒ FANG, X. ‒ HE, Z. ‒ SCHMIDT-ROHR, K. 2008. Influence of animal manure applicatioín on the chemical structures of soil organic mater as investigated by advanced solid-state NMR and Ft-IR spectroscopy. In Geoderma , vol. 146 , no. 1‒2, pp. 353‒362. http://dx.doi.org/10.1016/j.geoderma.2008.06.003 ONO, K. ‒ HIRAI, K

Open access

Diana Ruska and Daina Jonkus

review. Veterinarija ir zootechnika, t. 44 (66). 21. Šustova, K., Ružičkova, J., Kuchtik, J. (2007). Application of FT near spectroscopy for determination of true protein and casein in milk. Czech journal Animal Science, Vol. 52, No 9, 284-291. 22. Твердохлеб, Г. В., Раманаускас, Р. И. (2006). Химия и физика молока и молочных продуктов. (Chemistry and physics of milk and dairy products) Москва : ДеЛи принт, 360.

Open access

Amjad Mohammad Karimi, Soroor Sadeghi and Farhad Salimi

Abstract

A new biodesulphurization method has been considered using Pseudomonas aeruginosa supported on polyethylene (PE) for biodesulphurization (BDS) of thiophene as an aromatic sulphur model compound of crude oils. Also the biodegradation of thiophene has been modified in the presence of potassium hexacyanoferrate(III) as a terminal electron acceptor to approach the maximum biodesulphurization efficiency. The obtaining results according to UV-Spectrophotometry at 240 nm, 83.3% of thiophene at the primary concentration of 50 mg/dm3, pH = 7, by 0.5 g of biocatalyst in 37°C after 4 h of contact time has been removed. The bacterial cells exhibited a greater and faster biodegradation in the presence of potassium hexacyanoferrate(III) and 94.8% of thiophene has been removed after 3 h of contact time. Kinetic study predicted chemisorption of thiophene on the surface of the biocatalyst, as it followed the pseudo-second-order rate equation. Morphology and surface functional groups of the biocatalyst have been investigated by SEM and FT-IR, respectively.

Open access

Sayiter Yildiz

Abstract

In the work, adsorption of Cu2+ ions onto almond shell were investigated under different operational conditions. Almond shell was used without any pretreatment prior to the tests. The optimum conditions for adsorption of Cu2+ ions through almond shell were determined to be; pH 5.0, temperature 20°C, shaking rate 125 rpm, sorbent dose 0.3 g and initial Cu2+ ion concentration 50 mg/dm3. The equilibrium duration of the system was 60 minutes. The sorption capacities of the sorbents were predicted with the aid of equilibrium and kinetic models. The interactions of peanut shell with metal ions were constituted by SEM, EDX, FT-IR, XRD and AFM. The pseudo-first-order, pseudo-second-order, Weber-Morris, Elovich model and Bangham kinetic models were applied to test the experimental data. The Cu+2 ions adsorption onto almond shell was better defined by the pseudo-second-order kinetic model, for initial pH. The equilibrium data were evaluated using Langmuir, Freundlich, Temkin, D-R and Harkins Jura isotherms. The highest R2 value in isotherm studies was obtained from Langmiur isotherm (R2 = 0.98) for the inlet concentration.

Open access

Silvea Pruteanu, Ion Sandu and Viorica Vasilache

., Sandu, I., Vasilache, V., Hayashi, M., (2008b), Authentication of the ancient easel paintings through materials identification from the polychrome layers - II. Analysis by means of the FT-IR spectrophotometry, Revista de Chimie (Bucharest), 59, 384-387 Sandu I.C.A., Bracci S., Sandu I., Loberfaro M., (2009), Integrated Analytical Study for the Authentication of Five Russian Icons (XVI-XVII centuries, Microscopy Research and Technique, 72, 755-765. Sandu I.C.A., de Sa M.H., Pereira M.C., (2011a), Ancient 'gilded' art objects from

Open access

Arda Acemi, Yonca Avcı Duman, Yonca Yuzugullu Karakus and Fazıl Özen

segments of adult plants. Propag. Ornam. Plants 13(1), 25-32. A cemi A., Tü rker -K aya S., Ö zen F., 2016. FT-IR spectroscopy based evaluation of changes in primary metabolites of Amsonia orientalis after in vitro 6-benzylaminopurine treatment. Not. Bot. Horti. Agrobot. 44(1), 209-214. A cemi A., D uruksu G., Ö zen F., 2017a. Cytostatic effects of methanolic extracts of Amsonia orientalis Decne. on MCF-7 and DU145 cancer cell lines. Not. Bot. Horti. Agrobot. 45(1), 36-42. A cemi A., D uman Y., K arakuş Y.Y., K ömpe Y.Ö., Ö zen F., 2017