K-O - Glossary

Maltodextrin

A glucose polymer created from corn, rice or potato starch.  Maltodextrins are intermediate in size between starches and sugars/syrups.  They’re flavorless, which makes them useful as food additives.  Maltodextrins are used as bulking or dispersing agents, to modify viscosity or mouthfeel; and as a carrier for flavors in a variety of different food products.  Maltodextrin is often used as a carb source in meal replacements,...

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Octacosanol

A high molecular weight, waxy alcohol that’s one of the components of policosanol, a substance derived from sugar cane that’s been shown to reduce cholesterol in some studies but not in others.  Octacosanol has been touted as a performance enhancer, although there is minimal supporting data.  Octacosanol has antioxidant effects and has been shown to reduce lipid peroxidation...

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N-Acetyl-L-Tyrosine

A form of L-tyrosine touted for its high bioavailability.

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L-Tyrosine

A conditionally-essential amino acid synthesized from L-phenylalanine.  L-tyrosine is a precursor to the catecholamine neurotransmitters, l-dopa, dopamine, norepinephrine, and epinephrine – which are important contributors to mood and cognitive performance.  It’s also a precursor to the thyroid hormone thyroxine (also known as T4). In larger amounts, L-tyrosine has been shown to improve memory, psychomotor skills and...

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Lutein

A dietary carotenoid that concentrates within the human lens and retina and protects against age-related macular degeneration.  Unlike several other carotenoids, such as alpha and beta-carotene, lutein does not have pro-vitamin A activity.  Spinach and other dark green leafy vegetables are good sources of lutein. See the Linus Pauling Institute Micronutrient Information Center for more...

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L-Norvaline

An analog of the amino acid valine. L-Norvaline is an (in-vitro) inhibitor of the arginase enzyme, which breaks arginine down to ornithine and urea.  Thus, L-norvaline is sometimes added to NO (nitric oxide) supplements as a “nitric oxide amplifier,” on the theory that inhibiting arginine breakdown can will enhance NO...

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