Ara
Toplam kayıt 166, listelenen: 91-100
Study of polyphenol content in the seeds of red grape (Vitis vinifera L.) varieties cultivated in Turkey and their antiradical activity
(Elsevier Sci LTD, 2008)
The polyphenolic content and antioxidant capacity in the seeds of 11 red grape varieties (five international and six native) widely cultivated in Turkey were investigated. Total phenolic, total flavanol and total polymeric ...
Antioxidants from laurel (Laurus nobilis L.) berries: influence of extraction procedure on yield and antioxidant activity of extracts
(Akademiai Kiado, 2007)
The antioxidant activities of laurel (Laurus nobilis L.) berries extracts were evaluated using a DPPH assay, a beta-carotene/linoleic acid assay and the Rancimat method. Pericarp and kernel of berries were extracted by ...
Investigation of Turkish poppy seeds and seed oils
(Kluwer Academic/Plenum Publishers, 2004)
The oil yields. fatty acid compositions, and total protein contents of three varieties of Turkish poppy were investigated. Solvent extraction of yellow seed gave the highest oil yield (49.2%). while white seed (36.8%) and ...
Fe2O3 nanocomposite PVC membrane with enhanced properties and separation performance
(Elsevier Science BV, 2017)
Organic and inorganic mixed matrix membranes are one of the most promising new membrane materials for ultrafiltration (UF). separation applications. In this study, PVC/Fe2O3-mixed UF membranes were fabricated at different ...
Pyrolysis kinetics of walnut shell and waste polyolefins using thermogravimetric analysis
(Elsevier Sci LTD, 2017)
Co-pyrolytic behavior and kinetics of walnut shell (WS), polypropylene (PP), low density polyethylene (LDPE) and their blends were investigated using a thermogravimetric analyzer. WS and plastic samples were blended weight ...
Effects of processing on the properties of chitosan/cellulose nanocrystal films
(Elsevier Sci LTD, 2015)
Biocomposites of chitosan (CS)/cellulose nanocrystals (CN) were prepared by using solution casting method. Influences of solution preparation method and CN content on the properties of composites were investigated. Mechanical ...
A pyrolysis study for the thermal and kinetic characteristics of an agricultural waste with two different plastic wastes
(SAGE Publications LTD, 2014)
In this study, thermochemical conversion of plastic wastes (PET and PVC) together with an agricultural waste (hazelnut shell) was investigated. In order to determine the thermal and kinetic behaviours, pyrolysis experiments ...
Impregnation of 12-tungstophosphoric acid on tonsil: An effective catalyst for esterification of formic acid with n-butyl alcohol and kinetic modeling
(Elsevier Science BV, 2014)
Esterification of formic acid with n-butanol was catalyzed by dodecatungstophosphoric acid, H-3 PW12O40 (DTP) impregnated on tonsil earth. A series of catalysts containing 10%, 20% and 30% of DTP on tonsil earth were ...
Reaction kinetics of the catalytic esterification of acrylic acid with propylene glycol
(Elsevier Science BV, 2009)
The kinetics of esterification of acrylic acid with propylene glycol has been studied in the presence of Amberlyst-15 as a heterogeneous catalyst. The reaction was realized in a batch reactor at different temperatures and ...
Thermal decomposition behavior of tobacco stem Part I: TGA-FTIR-MS analysis
(Taylor & Francis Inc, 2016)
In the present study, the thermal degradation behavior of tobacco stem was examined by means of a thermogravimetric analyzer (TGA) under nitrogen atmosphere at temperature range of 25-1,000 degrees C. The TG curve indicated ...