B complex vitamins

Although each capillary electrophoretic method has its own unique considerations, the following description of the determination of a vitamin B complex provides an instructive example of a typical procedure. 

Procedure. A vitamin B complex tablet Is crushed and placed In a beaker with 20.00 mL of a 50% v/v methanol solution that Is 20 mM In sodium tetraborate and contains 100.0 ppm of o-ethoxybenzamIde. After mixing for 2 min to ensure that the B vitamins are dissolved, a 5.00-mL portion Is passed through a 0.45- xm filter to remove Insoluble binders. An approximately 4-nL sample Is loaded Into a 50- xm Internal diameter capillary column. For CZE the capillary column contains a 20 mM pH 9 sodium tetraborate/sodlum dIhydrogen phosphate buffer. For MEKC the buffer Is also 150 mM In sodium dodecylsulfate. A 40-kV/m electric field Is used to effect both the CZE and MEKC separations. 

A quantitative analysis for vitamin Bi was carried out using this procedure. When a solution of 100.0 ppm Bi and 100.0 ppm o-ethoxybenzamide was analyzed, the peak area for vitamin Bi was 71 % of that for the internal standard. The analysis of a 0.125-g vitamin B complex tablet gave a peak area for vitamin Bi that was 1.82 times as great as that for the internal standard. How many milligrams of vitamin Bi are in the tablet ... 

Folic acid is a member of the vitamin B complex found in green plants, fresh fruit, yeast, and liver. Folic acid takes its name from folium, Latin for leaf. Pterin compounds are named from the Greek word for wing because these substances were first identified in insect wings. Two pterins are familiar to any child who has seen (and chased) the common yellow sulfur butterfly and its white counterpart, the cabbage butterfly. Xanthopterin and leu-... 

Therapeutic Function Vitamin B complex lipotropic Chemical Name Myo-Inositol... 

Vita-Metrazol (Knoil)-comb. with vitamin B complex wfm... 

The water-soluble vitamins generally function as cofactors for metabolism enzymes such as those involved in the production of energy from carbohydrates and fats. Their members consist of vitamin C and vitamin B complex which include thiamine, riboflavin (vitamin B2), nicotinic acid, pyridoxine, pantothenic acid, folic acid, cobalamin (vitamin B12), inositol, and biotin. A number of recent publications have demonstrated that vitamin carriers can transport various types of water-soluble vitamins, but the carrier-mediated systems seem negligible for the membrane transport of fat-soluble vitamins such as vitamin A, D, E, and K. 

The following substances have been added to culture media to increase the yields of dextran raw beet sugar or molasses,80 commercial maple sirup,1 yeast extract,81 magnesium and ammonium sulfates,82 tomato juice,8,81 calcium carbonate,3 and a water extract of waste sugarrefining charcoal (probably containing materials related to the vitamin B complex).88... 

B26. Barton-Wright, E. C., Microbiological Assay of the Vitamin B-Complex and Amino Acids. Pitman, London, 1952. 

Physically compatible up to 48 hours - Ascorbic acid benztropine cytarabine dexamethasone sodium phosphate diphenhydramine doxorubicin heparin sodium hydrocortisone sodium phosphate lidocaine magnesium sulfate multivitamin infusion (must be refrigerated) vitamin B complex with ascorbic acid. 

Niacin (Niaspan/ Slo-Niacin) [Antilipemic/Vitamin B Complex]... 

If a urine sample looks clear, the lab will suspect that it is watered down. They cannot report it as positive, but they may reject the sample and inform your employer that you tried to beat the test. If this happens, the sample might as well be positive, because you won t get hired. Take vitamin B complex to color your urine yellow. 

Historically choline, inositol and carnitine have been considered to be part of the vitamin B complex. However, for the general population there has been no demonstration of a dietary need for these agents and also for none of them has there been a therapeutic role established. Vitamins of the B family are found in many food ingredients like in yeast, in meat, in dairy products and also in eggs and grain cereals and separate vitamin B deficiencies are unlikely to occur. Excessive intake of these vitamins is eliminated in the urine because of the fact that they are water-soluble. 

Brand Name(s) CobaMOOO, Cobolin-M, Crystal B-12, Cyomin, Depo-Cobalin, LA-12, Liver, Nascobal, Neuroforte-R, Vita 12, Vitabee 12, Vitamin B-12 Chemical Class NUTR-vitamin B complex... 

Vitamin Bg (8.47, pyridoxine) is a pyridine-alcohol, but its biologically active forms are pyridoxal 5-phosphate and the corresponding pyridoxamine. Like all the members of the vitamin B complex, it occurs in yeast, bran, wheat germ, and liver. It is a coenzyme of... 

Vitamin B complex group Vitamin (Thiamine BENALGIS)... 

Vitamin B complex preparations are indicated in vitamin deficiency states. Specific vitamin B preparations can be used as per indications mentioned above in the pharmacological write up as an adjuvant to antibiotic therapy combination with lactobacillus are indicated in aphthous stomatitis, thrush. 

It was soon apparent that the new vitamin alone would not satisfy the dietary need of rats for the B factor. A second thermostable factor (B2) was required in addition to thiamin (B ), which was labile and easily destroyed by heating. When it became clear that factor B2 contained more than one component, it was called vitamin B complex. There was some confusion until relatively specific animal tests for each one of the members had been devised. 

---