Castor oil methyl esters contains nearly 90% ricinoleic acid (12-hydroxy-cis-9-octadecenoic acid). Hydrogenated castor oil methyl esters finds several applications in coating, lubricants formulations and pharmaceutical areas. The present study reports a fast, simple, efficient and continuous hydrogenation of enriched castor oil methyl ester (ECME) using 10% Pd/C catalyst at different pressures ...

in this project, different nettle plants from north regions of iran including tonekabon, amol and gorgan were collected. the oil was extracted using soxhlet extraction apparatus and was subjected to series of physical and chemical tests and determinations consisting of refractive index, melting point, smoke point, nonsaponifiable matter, iodine value, saponification value, peroxide value, totox...

Physical and chemical changes were compared with soybean oil, corn oil, cottonseed oil , rice oil, rapeseed oil, lard, palm oil and coconut oil in continuous water spraying and heating system (Table -1 , Fig,-1•`4). Thermal oxidative changes such as viscosity increasing ratio, carbonyl and iodine value , showed close relation with the initial iodine value of these oils. However, in coconut oil ...

BACKGROUND Establishment of the reference interval of thyroid-stimulating hormone (TSH) is critical in the diagnosis of thyroid dysfunction and is affected by age, gender, iodine nutrition, and ethnicity. The aim of this study was to determine the reference intervals of TSH and free thyroxin (FT4) from a large, nationwide data of Korea where iodine intake is more than adequate. METHODS We ana...

On adsorption of some electron-acceptor molecules on the solid films of all-trans-beta-carotene, beta-apo-8'-carotenal, astacene and methylbixin a new absorption band appears on the longer-wavelength side of the spectrum in addition to the original bands. The position of this new band is dependent on the electron affinity (EA) of the acceptor molecules, and the intensity of this band increases ...

It has been demonstrated chemically that the iodine bound to proteins of the serum is predominantly composed of thyroxine (1-4). The concentration of this protein-bound or serum precipitable iodine (SPI) appears to be closely correlated with the activity of the thyroid gland (5-7). It is probably the most precise clinical criterion of such activity that has yet been extensively employed. It is,...

background: the aim of the study was to evaluate the third trimester urinary iodine excretion and to assess its relation with newborns thyroid function. materials and methods: a total  of  208 healthy third trimester pregnant women without previous history of thyroid disease were included in the study. urinary iodine levels of mothers were measured and neonatal tsh levels were screened on the 3...

background: goiter is thyroid enlargement, which is the most common visible symptom of iodine deficiency. some studies have shown iodine deficiency in water, soil, and food in many places worldwide. we aimed to determine the prevalence of goiter and the association between urine iodine levels in children with severity and prevalence of goiter in mountainous villages of kashan city (center of ir...

Iodine deficiency, by depriving the thyroid gland of sufficient raw material to produce thyroid hormones can, in its milder forms, impair cognition in children reducing IQ by up to 10-15 points. 1,2 While the consequences of severe iodine deficiency (population median urinary iodine excretion (UI) < 20 ug/L) can be extreme, including irreversible mental retardation, those arising from more mode...

background infection after transrectal ultrasound (trus) guided biopsy of the prostate is a major and potentially life-threatening problem. using antibiotic premedication can not completely eliminate infection after biopsy. objectives we performed this study to determine the value of using povidone-iodine in prevention of post biopsy infection. patients and methods totally, 280 patients who wer...