The suitable mole ratio of Cu∶Ni is 5∶1 and carrier is 40 %. Under reaction conditions:150 ℃,and 0.8 MPa,with catalyst dosage 0.8 % for 4 h～6 h,the hydroxyl value and iodine value of hydrogenated castor oil obtained is 155.6 mg/g and (3.05 mg/g) respectively.
Physical and chemic quality of mulberry seed oil, water 0.75%, density 0.9210, colour and luster Y25,R0.2, clarity, refraction exponential(n20)1.4744, acid value 0.75mg/g,peroxide value 4.06meq/kg,iodine value 130.35 g/100g.
Physicochemical properties test result shows that specific gravity is 0.928 8,refraction index 1.481 7,acid value 2.9 mg/g,iodine value 1 980(g/kg),saponification value 190.7 mg/g,unsaponifiable matter 0.6%,moisture and volatile matter 0.07%,peroxide value 3.7 mmol/kg.
紫苏油比重为0.928 8,折光指数为1.481 7,酸价为2.9 m g/g,碘价为1 980 g/kg,皂化值为190.7 m g/g,不皂化物为0.6%,水分及挥发物为0.07%,过氧化值为3.7 mm o l/kg。
Iodine value and acidity value of kidney fat in test group were 8.7% and 20.5% lower than those in control group (P<0.05). The TBA value of breast meat was 13.65% lower in test group than that in control group after being stored 30 days in -10～-20 ℃(P>0.05).
Its main property targets: N% =1.70, P% = 3.62, P/N= 2.1, acid value 9.5, iodine number 97.0, pH 6. The pharma-cological experiment indicated that the refined lecithin was non-toxic, non-pyrogenic andnon-hypotensive.
The results obtained show that the pH values, water-holding capacity and the contents of dry matter, total pigment and intra muscular fat of muscle determind after slaughter of JS were significantly higher than those of LD, and the iodine number of its corresponding fat of JS was much lower than that of LD.
Extracting oat oil with aceton,petrobenzine,ethano-aceton and n-hexne from oat,determining quality of physical and chemic about acidity value,iodic value,saponification value,unsaponification,colour and melting point,analysis on composition of fatty acid on oat oil.
The water iodine value was 0.6:_84.8 μg/L (mean of 11.66 μg/L).
(3) Soil iodine value was 0.11:_2.93 mg/kg (mean of 1.32 mg/kg).
The results showed that acid pH, iodine value, saponification value, and unsaturation point are 1.887 and 0.784, 53.90 and 48.32, 98.80 and 100.23, and 60.05% and 58.85% are respectively for masked civet's fat and nutria's oil.
The analysis results indicate that masked civet's oil is similar to nutria's oil in iodine value, saponification value and unsaturation point.
The iodine value and the acid number can be calculated from the chromatographic data.
The activity of the samples, evaluated by the iodine number, was determined in relation to the synthesis conditions.
The maximum number of iodine molecules coordinated by bromides in the solution was established by spectrophotometric method using a function of average iodine number and the stability constants of the complexes were determined.
The stability constant of N-ethylquinolinium triiodide (I) is determined by spectrophotometric methods of stoichiometric dilution using the average iodine number function.
Larvae reared at high temperatures also laid down fat which had a higher melting point and a lower iodine number than did larvae reared at low temperatures.
A new microanalytical radioactive method for the estimation of the iodine number in linseed oil