Solvent extraction of rice brain. Production of B-vitamin concentrate and oil by isopropanol extraction

1949 ◽  
Vol 26 (10) ◽  
pp. 532-534 ◽  
Author(s):  
W. W. Meinke ◽  
Bryant R. Holland ◽  
W. D. Harris
Keyword(s):  
Solvent Extraction ◽  
B Vitamin ◽  
Vitamin Concentrate

scholarly journals Extract Corn Silk with Variation of Solvents on Yield, Total Phenolics, Total Flavonoids and Antioxidant Activity

2017 ◽  
Vol 14 (1) ◽  
pp. 21
Author(s):  
Haslina Haslina ◽  
Murtiari Eva
Keyword(s):  
Antioxidant Activity ◽  
Solvent Extraction ◽  
Ethyl Acetate ◽  
Tangent Plane ◽  
Total Phenol ◽  
Total Flavonoids ◽  
Corn Silk ◽  
Randomized Design ◽  
Acetone Water ◽  
B Vitamin

Corn silk is a by product or waste that is commonly used as a traditional medicine that contain bioactive compounds such as volatile oils, steroids, alkaloids, tannins, flavonoids, chlorogenic acid and phenolic compounds, containing protein, carbohydrates, minerals (Ca, Mg, Cu , Zn, Fe and Mn), higher crude fiber, vitamin B, vitamin C, vitamin K, steroids such as sitosterol and stigmasterol, alkaloids, saponins, tannins, flavonoids, anthocyanins, protokatekin, vanilic acid, derivatives hasperidin and quersetin, phenols, terpenoids and glycosides, maysin, β-carotene, beta-sitosterol, geraniol, hordenin, limonene, menthol and viteskin also a good source of poliphenol as antioksidan. Solvent used for the extraction of flavonoid compounds are methanol, ethanol, acetone and ethyl acetate. Basic separation by solvent extraction is the difference in the solubility of each composition in compaction with solvent. Solubility is influenced temperature, stirring speed, the extraction time, comprehensive tangent plane solids by solvent extraction and frequency.This study aims to extract corn silk by using a variation of solvent type in terms of yield, total phenols, flavonoids and antioxidant activity.The experimental design used in this study is completely randomized design (CRD) 1 factor with 5 replications. Solvent: methanol: water (85:15) (v/v) ethanol: water (85:15) (v/ v), ethyl acetate: water (85:15) (v/v), acetone: water (85 : 15) (v/v). Furthermore, the data obtained were analyzed variants and if there is a difference between treatments continued by Duncan Multiple Range Test (DMRT) at 5% level.Variations in the type of solvent significant (p <0.05) to the yield, total phenol, total flavonoids and antioxidant activity. Variations in the type of solvent with the highest yield at a ratio (methanol: water), and the ratio (ethanol: water), then the ratio (acetone: water) and the lowest ratio of (ethyl acetate: water). At ratio (methanol: water) obtained yield is 65.8%, total phenol ie 45350.27 mg / kg GAE, total flavonoids 291.28 mg QE / kg and activities of antioxidant that is 92.1%.

B-Vitamins, Methylenetetrahydrofolate Reductase (MTHFR) and Hypertension

2011 ◽  
Vol 81 (4) ◽  
pp. 240-244 ◽  
Author(s):  
Mary Ward ◽  
Carol P Wilson ◽  
J J Strain ◽  
Geraldine Horigan ◽  
John M. Scott ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cardiovascular Disease ◽  
Risk Factor ◽  
Low Dose ◽  
Methylenetetrahydrofolate Reductase ◽  
Genetic Determinant ◽  
Gene Encoding ◽  
Homocysteine Concentration ◽  
Homozygous Mutant ◽  
B Vitamin

Hypertension is a leading risk factor for cardiovascular disease (CVD) and stroke. A common polymorphism in the gene encoding the enzyme methylenetetrahydrofolate reductase (MTHFR), previously identified as the main genetic determinant of elevated homocysteine concentration and also recognized as a risk factor for CVD, appears to be independently associated with hypertension. The B-vitamin riboflavin is required as a cofactor by MTHFR and recent evidence suggests it may have a role in modulating blood pressure, specifically in those with the homozygous mutant MTHFR 677 TT genotype. If studies confirm that this genetic predisposition to hypertension is correctable by low-dose riboflavin, the findings could have important implications for the management of hypertension given that the frequency of this polymorphism ranges from 3 to 32 % worldwide.

STUDIES ON A NON-MELATONIN PINEAL ANTI-GONADOTROPHIN

1972 ◽  
Vol 69 (2) ◽  
pp. 257-266 ◽  
Author(s):  
Bryant Benson ◽  
Mary Jane Matthews ◽  
Alvin E. Rodin
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Pineal Gland ◽  
Gel Filtration ◽  
Test System ◽  
Pineal Body ◽  
Physiological Effects ◽  
Organic Solvent Extraction ◽  
Gland Function

ABSTRACT Continuing investigation of pineal gland function indicates that the anti-gonadotrophic activity of this organ cannot be attributed solely to the postulated hormone melatonin, the concentration of which is negligible in the pineal body compared to quantities required to produce unequivocal physiological effects. A non-melatonin antigonadotrophic substance recently isolated from bovine pineal glands was further purified by organic solvent extraction, ultrafiltration and gel filtration. Studies of partial blockage of compensatory ovarian hypertrophy in unilaterally ovariectomized Charles River CD-1 mice indicated that this substance is significantly more potent than melatonin in this test system.

PREVENTION OF OBSTETRIC COMPLICATIONS IN WOMEN WITH B VITAMIN DEFICIENCY

2019 ◽  
Vol 15 (68) ◽  
pp. 082 ◽  
Author(s):  
V. P. Mischenko ◽  
I. V. Rudenko ◽  
V. K. Likhachov ◽  
M. Y. Golubenko ◽  
L. M. Dobrovolska
Keyword(s):  
Vitamin Deficiency ◽  
Obstetric Complications ◽  
B Vitamin
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