نتایج جستجو برای: oil stability

تعداد نتایج: 433689  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Journal: :journal of agricultural science and technology 2012
z. beig mohammadi y maghsoudlou h. safafar a. r. sadeghi mahoonak

the oil extracted from three major canola cultivars (hyolla401, hyolla420 and rgs003) grown in golestan province was analyzed for physico-chemical properties, fatty acid composition, minerals content, and stability during 16 weeks of storage. according to the results, the highest iodine value and refractive index belonged to hyolla401. the highest saponification value was observed in hyolla420....

Journal: :journal of agricultural science and technology 2010
a. h. omidi tabrizi

the stability of ten winter safflower cultivars and lines was evaluated in three different environmental conditions in karaj, isfahan and darab in iran, a randomized complete block design with 4 replications over three years (1995, 1996 and 1997). simple analysis of variances of grain and oil yields from each experiment showed significant differences among the genotypes. after conducting a homo...

Journal: :journal of agricultural science and technology 2010
c. borchani s. besbes ch. blecker h. attia

raw (intact) sesame seed showed a high content of oil, protein and ash: respectively, 52%, 24% and 5%. studies were conducted on some quality characteristics of sesame and olive oils. the following values were obtained from raw sesame, sesame paste and olive oils, respectively: unsaponifiable matter 1.35, 1.46, and 1.50%; total phenols 14.21, 16.82, and 53.33 mg kg-1 oil; chlorophylls 0.04, 0.0...

Journal: :journal of food quality and hazards control 0
n. mollakhalili meybodi m.a. mohammadifar [email protected] kh abdolmaleki

background: the dispersed phase volume fraction plays key role in oil-in-water emulsion stability by different mechanisms like partial flocculation, depletion flocculation and bridging flocculation. since the mentioned mechanism is affected by emulsifier concentration presented in system, the major aim of this study was to investigate the effect of dispersed phase volume fraction on physical st...

Journal: :journal of agricultural science and technology 2013
r. farhoosh m. h. haddad khodaparast a. sharif s. alavi rafiee

the present study was conducted to determine the relative contribution of initial quality and compositional parameters to the rate of changes (rctpc) in the content of total polar compounds (tpc), which is considered to be one of the most reliable indicators of heated oils quality, of olive oil during continuous heating at 180 ºc. the ratio between monounsaturated and polyunsaturated fatty acid...

KH Abdolmaleki, M.A. Mohammadifar, N. Mollakhalili Meybodi,

Background: The dispersed phase volume fraction plays key role in oil-in-water emulsion stability by different mechanisms like partial flocculation, depletion flocculation and bridging flocculation. Since the mentioned mechanism is affected by emulsifier concentration presented in system, the major aim of this study was to investigate the effect of dispersed phase volume fraction on physical st...

Journal: :journal of agricultural science and technology 2015
v. najafi m. barzegar m. a. sahari

this study investigated the fatty acids profile, oxidative stability indices, and bioactive compounds of virgin and processed olive oils (leccino and frantoio cultivars). results showed that fatty acid profile of the studied oils contained mostly oleic acid followed by palmitic and linoleic acid. acid values of virgin frantoio and processed leccino were 0.78 and 0.18 mg koh/g oil, with peroxide...

The essential oil yield stability of damask rose (Rosa damascena Mill.) as an important medicinal and aromatic plant in different environments has not been well documented. In order to determine appropriate stability parameters, six statistics were studied for essential oil stability of 35 Rosa damascena landraces in seven locations (Sanandaj, Arak, Kashan, Dezful, Stahban, Ke...

Background and Objectives: Stability of the products made from pistachios depends on stability of the oil. Oxidized oil includes unpleasant taste and thus its quality and shelf-life decreases. The aim of this study was to assess pistachio oil oxidation stability alone and in combination with Carotino oil and monoglyceride emulsifier using method of accelerated temperature (60 °C).  Materials &...

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