Category Archives: Cobalamin

Marmite

Posted on August 20, 2024 by Robert Barrington

Marmite is a yeast extract that is a by-product of the brewing industry. The ability to use the concentrated thrub from the brewing process to make marmite is attributed to the German scientist Justus Freiherr von Liebig. The thrub is … Continue reading →

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Blood Vitamin B12 Levels in Vegetarians and Nonvegetarians

Posted on March 24, 2022 by Robert Barrington

Vitamin B12 is an important essential nutrient required for normal metabolic function. Most vitamin B12 in foods are in those of animal origin, and as a result vegans and vegetarians have much lower intakes. Studies generally show that vegans have … Continue reading →

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Sources of Vitamin B12

Posted on March 22, 2022 by Robert Barrington

Meat, eggs, fish and shellfish are good sources of vitamin B12. Saturation of vitamin B12 absorption is thought to occur at intakes of around 1.5 to 2.0 micrograms per meal, and this is due to the ability of intrinsic factor, … Continue reading →

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Vitamin B12 in Edible Algae

Posted on March 21, 2022 by Robert Barrington

Vitamin B12 is found predominantly in foods of animal origin. Only microorganisms can synthesise vitamin B12 and plants do not use it in their metabolism. As a result plants are a poor source of the vitamin. Vitamin B12 is essential … Continue reading →

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Spirulina and Chlorella as a Source of Vitamin B12

Posted on March 18, 2022 by Robert Barrington

Spirulina and chlorella are macroalgae that are grown for their nutritional content. They are good sources of a number of nutrients including protein, vitamins, minerals and phytochemical antioxidants. Microalgae have excellent nutritional value and have become increasingly popular in Western … Continue reading →

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Vitamin B12 in Plant Foods

Posted on March 17, 2022 by Robert Barrington

Vegetarians have limited options when it comes to sources of vitamin B12. This relates to the fact that the best sources of vitamin B12 are animal foods. Vegans are even more limited in choice as they cannot eat the few … Continue reading →

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Vitamin B12 in Plants

Posted on March 16, 2022 by Robert Barrington

Vitamin B12 is found in foods of animal origin and plants are poor sources of the essential nutrient. The major forms of vitamin B12 (cobalamin) compounds are cyanocobalamin, adenosylcobalamin, methylcobalamin and hydroxycobalamin. Vitamin B12 is considered difficult to obtain from … Continue reading →

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Vitamin B12 and Cognitive Performance

Posted on December 21, 2017 by Robert Barrington

Evidence suggests that poor diet is a contributory factor in the development of not only poor cognitive function, but also age-related memory decline and dementia. Low levels of B vitamins have been linked to a number of cognitive problems, and … Continue reading →

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B Vitamin and Fish Oils: Brain Protection?

Posted on April 6, 2017 by Robert Barrington

It is often assumed that cognitive decline is a normal part of ageing, and to some extent this is true. However, the decline if often exaggerated considerably by poor diet and Western lifestyle habits. Evidence from populations that eat high … Continue reading →

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Vitamin B12 Status During Pregnancy

Posted on January 19, 2017 by Robert Barrington

Vitamin B12 is a group of vitamins known as cobalamins that are essential for cellular growth, differentiation and development. Vitamin B12 functions closely with folic acid, and both together are required for the synthesis of DNA, RNA, proteins and lipids. … Continue reading →

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