carotene

[kar´o-tēn]

a yellow or red pigment found in many dark green, leafy, and yellow vegetables such as collards, turnips, carrots, sweet potatoes, and squash, as well as in yellow fruit, milk, egg yolk, and body fat; it is a chromolipoid hydrocarbon existing in four forms (α-, β-, γ-, and δ-carotene), which can be converted into vitamin A in the body.

beta carotene

1. the β isomer of carotene.

2. a preparation of this substance administered orally to prevent vitamin A deficiency and to reduce photosensitivity in patients with erythropoietic protoporphyria. Written also betacarotene and β-carotene.

beta carotene

also

beta-carotene

(bā′tə-kăr′ə-tēn′, bē′-)

The isomeric form of carotene that is most widely distributed in nature and is efficiently converted to vitamin A by the body.

beta carotene

A precursor of vitamin A.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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References in periodicals archive

Beta carotene, like vitamins C and E, is an antioxidant - that is, it seems to neutralize the free radicals that damage cells and contribute to cancer.

What's up, doc? Beta carotene

Klausner also announced that an NIH-funded study of 22,071 male physicians shows that beta carotene prevents neither heart disease nor cancer.

Beta carotene prove 'no magic bullet.' (National Cancer Institute research indicates that beta carotene provides no protection against heart disease or cancer)(Science News of the Week)(Brief Article)

Stampfer calls the company's focus on beta carotene alone a "smokescreen," adding that researchers have gathered proof that several other carotenoids protect human health.

Olestra: too good to be true; researchers flush out health risks of fake fat

Gaziano and his colleagues focused on the antioxidant beta carotene, which the body converts to vitamin A from dietary sources such as carrots, leafy green vegetables and some fruits.

Beta carotene may slow artery disease

Experimental group B was administered beta carotene 30 mg/kg body weight once daily one hour before 700 mg/kg body weight subacute APAP once daily for 7 consecutive days.

ROLE OF BETA CAROTENE ON HISTOMORPHOLOGY OF RAT KIDNEYS IN SUBACUTE APAP INDUCED RENAL DAMAGE

Supplementation with omega-3 fatty acids or beta carotene had no statistically significant effect on visual acuity

AREDS2: what does it mean for eye care? John Nolan, Stephen Beatty and Jim Stack discuss the results of the AREDS2 study and what it means for the future of eye care

Zelkha added that the company will now be able to provide natural beta carotene and establish itself as a fully backward-integrated manufacturer for natural colours, beadlets for dietary supplements and others.

LycoRed buys carotenoids specialist Vitan in Ukraine

Orange-fleshed sweet potatoes (OFSP) contain high levels of beta carotene, an important provitamin A carotenoid [2-5].

Changes in microstructure, beta carotene content and in vitro bioaccessibility of orange-fleshed sweet potato roots stored under different conditions

With its high beta-carotene content, eating sweet potatoes can offer improvement in a variety of areas where beta carotene supplementation is recommended.

The sweet potency of the sweet potato

John Biggs, Global Marketing Manager Beta Carotene, DSM Nutritional Products, commented: "This is a valuable addition to our successful carotenoids range.

Carocare: The natural choice for [beta]-Carotene

A recent randomized trial of antioxidants for cancer prevention found that daily supplementation with nutritionally appropriate doses of vitamins C and E, beta carotene, selenium and zinc appeared to increase the risk of melanoma in women four-fold.

Vitamins C, E supplements don't increase melanoma risk

Lucuma is low glycemic, high in iron, zinc, potassium, calcium, magnesium and vitamin B3, and it is a "great source of beta carotene, fiber and bio-available protein." Camu Power is an "excellent source of vitamin C," and a "great source of potassium, calcium, protein and beta-carotene, as well as serine, thiamin, leucine and valine."

Chia Seed & power food powders