Alpha-carotene - Factbites

Alpha-carotene - Factbites
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Topic: Alpha-carotene

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	BETA-CAROTENE
		Carotene occurs in several isomeric forms: alpha, beta, gamma, delta, epsilon, and zeta of which the form of beta acts as an antioxidant nutrient protecting the body from damaging molecules called free radicals and an immune system booster as it is converted to vitamin A (retinol), important in animal biology as the main dietary source.
		Carotene: though carotene is the simplest of a group of natural pigments called carotenoids, it has an unsaturated and long aliphatic hydrocarbon chain.
		Carotene is thought to transport light energy for photosynthesis or contribute to reduction reaction.
	www.chemicalland21.com /arokorhi/lifescience/foco/BETA-CAROTENE.htm (528 words)

	Beta Carotene Benefits
		Other members of the antioxidant carotene family include cryptoxanthin, alpha-carotene, zeaxanthin, lutein, and lycopene, but most of them do not convert to significant amounts of vitamin A. A good multivitamin is the foundation of health and nutrition.
		Vitamin A is a major source of beta carotene and has also been shown to reduce the risk of cataracts.
		Beta carotene is closely related to vitamin A, but there is a big difference.
	www.vitamins-nutrition.org /vitamins/beta-carotene.html (811 words)

	Beta Carotene
		The integrity of the beta carotene and its components such as alpha carotene and other carotenoids are kept intact.
		However, they were not able to concentrate the beta carotene in a way that would maintain the natural balance of the beta carotene and the accompanying carotenoids.
		Both groups were placed on a low beta carotene diet until their blood levels of beta carotene began to drop.
	www.nutrition-help.com /Vitamins_Beta_Carotene.htm (791 words)

	Effects of alpha tocopherol and beta carotene supplements on symptoms, progression, and prognosis of angina pectoris -- Rapola et al. 79 (5): 454 -- Heart
		Effects of alpha tocopherol and beta carotene supplements on symptoms, progression, and prognosis of angina pectoris -- Rapola et al.
		Risk of angina pectoris and plasma concentrations of vitamins A,C, and E and carotene.
		carotene supplements on symptoms, progression, and prognosis of angina pectoris
	heart.bmjjournals.com /cgi/content/full/79/5/454 (2609 words)

	Phycotene Nanoclusters! Carotene Antioxidant Complex Formulation!
		Many of the lesser known carotenoids such as alpha carotene and canthaxanthin have also demonstrated beneficial health effects.6,7
		Beta Carotene has been recognized for years as an important antioxidant, but recent research has shown it to be only one of the powerful carotenoids that contribute to optimum health.
		Studies reveal that consuming these carotenoids in combination is the safest and most beneficial way to obtain their healthful components.
	www.smartwomensupplements.com /phycotene-nanoclusters.html (668 words)

	Vitamin A information page. All about vitamin A and the role it plays in your diet.
		The animal form is divided between retinol and dehydroretinol whereas the vegetable carotene can be split into four very potent groups - alpha-carotene, beta-carotene, gamma-carotene and crypto-carotene.
		Vitamin A and carotene can be obtained from either animal or vegetable sources.
		Liver, milk, egg-yolk, carrots, dark green leafy vegetables and yellow fruits are high in vitamin A or beta-carotene.
	www.anyvitamins.com /vitamin-a-info.htm (826 words)

	beta-carotene
		Look for products that combine beta-carotene with other carotenes such as alpha-carotene, lycopene, lutein, zeaxanthin, and cryptoxanthin.
		In addition to the numerous studies on beta-carotene's effectiveness for heart disease and cancer, researchers have been exploring the nutrient's potential for treating chronic fatigue syndrome, Alzheimer's disease, fibromyalgia, male infertility, and psoriasis.
		Until more information is available, it's probably wise to get beta-carotene in supplement form only as part of a mixed complex, along with other health-promoting carotenoids.
	www.wholehealthmd.com /refshelf/substances_view/1,1525,10103,00.html (1178 words)

	{beta}-Carotene and Other Carotenoids as Antioxidants -- Paiva and Russell 18 (5): 426 -- Journal of the American College of Nutrition
		The Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group.
		Anonymous: The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers.
		Rapola JM, Virtamo J, Haukka JK, Heinonen OP, Albanes D, Taylor PR, Huttunen JK: Effect of vitamin E and beta carotene on the incidence of angina pectoris.
	www.jacn.org /cgi/content/full/18/5/426 (4565 words)

	The Canary in the Cell: A Sentinel Role for {beta}-Carotene -- Jandacek 130 (3): 648 -- Journal of Nutrition
		Alpha Tocopherol Beta Carotene Cancer Prevention Study Group The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers.
		Salgo M. G., Cueto R., Winston G. W., Pryour W. Beta carotene and its oxidation products have different effects on microsome mediated binding of benzo[a]pyrene to DNA.
		Palan P. R., Mikhail M., Romney S. Decreased beta-carotene tissue levels in uterine leiomyomas and cancers of reproductive and nonreproductive organs.
	www.nutrition.org /cgi/content/full/130/3/648 (2793 words)

	beta-carotene
		Look for products that combine beta-carotene with other carotenes such as alpha-carotene, lycopene, lutein, zeaxanthin, and cryptoxanthin.
		Until more information is available, it's probably wise to get beta-carotene in supplement form only as part of a mixed complex, along with other health-promoting carotenoids.
		In addition to the numerous studies on beta-carotene's effectiveness for heart disease and cancer, researchers have been exploring the nutrient's potential for treating chronic fatigue syndrome, Alzheimer's disease, fibromyalgia, male infertility, and psoriasis.
	www.wholehealthmd.com /refshelf/substances_view/1,1525,10103,00.html (2793 words)

	{beta}-Carotene Does Not Change Markers of Enzymatic and Nonenzymatic Antioxidant Activity in Human Blood -- Castenmiller et al. 129 (12): 2162 -- Journal of Nutrition
		The Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study Group The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers.
		Greenberg E. R., Baron J. A., Karagas M. R., Stukel T. A., Nierenberg D. W., Stevens M. M., Mandel J. S., Haile R. Mortality associated with low plasma concentration of beta carotene and the effect of oral supplementation.
		Omenn G. S., Goodman G. E., Thornquist M. D., Balmes J., Cullen M. R., Glass A., Keogh J. P., Meyskens F. L., Valanis B., Williams J. H., Barnhart S., Hammar S. Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease.
	nutrition.org /cgi/content/full/129/12/2162 (2793 words)

	- Supplements
		In 1994, the results from a large (almost 30,000 subjects) supplementation study (ATBC � the Alpha- Tocopherol and Beta- Carotene study) showed not only that beta-carotene supplements (20mg/day for 5-8 years) did NOT prevent lung cancer in high risk subjects (long-time male smokers), but actually caused an increase in lung cancer risk by almost 20%.
		In 1996, another large study (CARET � the Beta- Carotene and Retinol Efficacy Trial) found virtually the same thing � with subjects receiving beta-carotene showing almost 50% more cases of lung cancer.
		Unfortunately, intervention studies that have looked at purified beta-carotene supplements (not mixed carotenoids) have not cleared up any of the confusion.
	www.supplementwatch.com /supatoz/supplement.asp?supplementId=40 (2793 words)

	Pooling Project of Prospective Studies of Diet and Cancer at Harvard School of Public Health
		The Alpha-Tocopherol Beta-Carotene Prevention Study is a randomized, double-blind, placebo-controlled clinical trial that was designed to evaluate whether daily supplements of alpha-tocopherol and/or beta-carotene would reduce the risk of lung cancer and other types of cancer.
		The study, initiated in 1992-1995, used a 2x2x2 factorial design to randomize participants to aspirin or aspirin placebo, vitamin E or vitamin E placebo, and beta-carotene or beta-carotene placebo (this component was terminated in January 1996).
		Each study is a published cohort study which 1) used a comprehensive dietary assessment method to measure usual diet, 2) assessed the validity of their dietary assessment instrument or a closely related instrument, and 3) included a minimum number of cases of the specific cancer being examined.
	www.hsph.harvard.edu /poolingproject/about.html (1144 words)

	Canthaxanthin / Phyto Bronz (PhytoBronz), Bronze Ez (Ezee) - Order
		Beta-carotene (C40 H56) and alpha-carotene are responsible for the orange color of carrots, and lycopene for the red color of tomatoes; astaxanthin imparts a red or pink color to lobsters and salmon.
		beta-carotene, alpha-carotene, lycopene), while the term "xanthophylls" refers to compounds which contain hydroxyl groups (lutein, zeaxanthin, beta-cryptoxanthin) or keto groups (canthaxanthin) or both (astaxanthin).
		We apologize but ASN Canthaxanthin has been discontinued.
	www.smartbodyz.com /canthaxanthin-Order.htm (634 words)

	3968CIS1990-2002.doc
		Three oxygenated carotenoids (lutein, zeaxanthin, and cryptoxanthin), three hydro-carbon carotenoids (alpha-carotene, all-trans-beta-carotene, and 13-cis-beta-carotene), and four geometric isomers of lycopene (15-cis-, 13-cis-, 9-cis-, and all-trans-lycopene) were separated by using a C30 carotenoid column.
		Arch Biochem Biophys 1992 Apr;294(1):173-177 Since cis or trans isomers of carotenoids may have different biological reactivities, the isomeric composition of lycopene and beta-carotene was measured in serum and seven human tissues.
		cis-trans isomers of lycopene and beta-carotene in human serum and tissues.
	www.lycopene.org /documents/doc/3968CIS1990-2002.doc (447 words)

	WolfBerry Related Articles
		Beta-carotene has received most of the attention because Beta-carotene generates vitamin A much more efficient than alpha-carotene.
		However, wolfberry’s benefit to our eyes remained a mystery until modern science discovered that wolfberry fruit contained substantial amounts of pro-vitamin A: beta-carotene and cryptoxanthin.
		Wolfberry Improves Vision: A Rich Source of Beta-carotene
	www.richnature.com /products/herbal/articles/wolfberry.htm (698 words)

	Carotenoid Complex
		In contrast, when Daily Carotenoid Complex™ with its broad-spectrum of nutrients including alpha-, beta-, gamma-, and zeta-carotene, lycopene, lutein, cryptoxanthin, and other natural fruit and vegetable carotenoids was tested, it caused a much greater decrease in lipid oxidation than the beta-carotene alone.
		For example, two carotenoids that have generated recent interest are lutein and its role in maintaining eye health, and alpha-carotene's role in cancer prevention.
		Sometimes called "nature's crayons," carotenoids are a huge family of colorful plant pigments, many of which act as precursors of vitamin A. Carotenoids are responsible for the red in tomatoes, the orange in carrots, and the yellow in squash.
	www.thebetterhealthclub.com /carotenoidcomplex.htm (1415 words)

	carrot_pigment.html
		The color is due mainly to beta-carotene, with some alpha-carotene, both of which are orange pigments.
		Orange carrots get their color from beta carotene, a pigment the body converts to vitamin A. Vitamin A deficiency, although rare in the United States, poses a major public health problem in developing countries second only to protein malnutrition, says Simon.
		Yellow carrots contain xanthophylls, pigments similar to beta carotene, which help develop healthy eyes and may prevent lung and other cancers.
	www.cals.wisc.edu /media/news/02_00/carrot_pigment.html (1415 words)

	Chr. Hansen Customer Web Center
		Our natural carotene products are exceptional in that they have a high concentration of alpha-carotene, which has proven to have a higher nutritional benefit than beta-carotene.
		Our range of phytonutrients can be used either as single, pure agents, such as natural carotene, lutein, lycopene and polyphenols or as mixtures of these.
		Hansen is involved in the development and manufacture of a range of phytonutrients for human health including natural carotenoids and polyphenols.
	www.mychr-hansen.com /webapp/wcs/stores/servlet/CategoryDisplay?storeId=10001&langId=-1&catalogId=10101&categoryId=10324&path=10265,10324 (1415 words)

	carrot_pigment.html
		Bottom left is a "red" carrot, due mainly to lycopene (another type of carotene, also found in tomatoes), in addition to some beta- and alpha-carotene.
		Orange carrots get their color from beta carotene, a pigment the body converts to vitamin A. Vitamin A deficiency, although rare in the United States, poses a major public health problem in developing countries second only to protein malnutrition, says Simon.
		Center left is a "yellow" carrot, whose color is due mainly to xanthophylls (a type of carotene).
	www.cals.wisc.edu /media/news/02_00/carrot_pigment.html (725 words)

	Bush, Warren Van Ness (1958-01-01) A study of the boron trifluoride complexes of some carotenoid hydrocarbons and the products of their hydrolytic and alcoholytic cleavage. http://resolver.caltech.edu/CaltechETD:etd-10072004-100851
		Formation of a deeply-colored [alpha]-carotene - boron trifluoride complex, by means of boron trifluoride etherate, and subsequent hydrolysis of the complex result mainly in the formation of 4-hydroxy-[alpha]-carotene, indicating that, under the conditions applied, only the [beta]-ionone end of the complex is reactive; ethanolysis gave the corresponding ethoxy derivative.
		Bush, Warren Van Ness (1958-01-01) A study of the boron trifluoride complexes of some carotenoid hydrocarbons and the products of their hydrolytic and alcoholytic cleavage.
		A study of the boron trifluoride complexes of some carotenoid hydrocarbons and the products of their hydrolytic and alcoholytic cleavage
	etd.caltech.edu /etd/available/etd-10072004-100851 (725 words)

	Individual metabolism should guide agriculture toward foods for improved health and nutrition -- Watkins et al. 74 (3): 283 -- American Journal of Clinical Nutrition
		Effects of alpha-tocopherol and beta-carotene supplements on cancer incidence in the Alpha-Tocopherol Beta-Carotene Cancer Prevention Study.
		The overall metabolome is not confined to the products of genes,
		Key Words: Metabolomics • lipids • metabolites • genomics • bioinformatics • agriculture • medicine • nutrition
	www.ajcn.org /cgi/content/full/74/3/283 (725 words)

	Concurrent liquid-chromatographic assay of retinol, alpha-tocopherol, beta-carotene, alpha-carotene, lycopene, and beta-cryptoxanthin in plasma, with tocopherol acetate as internal standard -- Thurnham et al. 34 (2): 377 -- Clinical Chemistry
		Concurrent liquid-chromatographic assay of retinol, alpha-tocopherol, beta-carotene, alpha-carotene, lycopene, and beta-cryptoxanthin in plasma, with tocopherol acetate as internal standard -- Thurnham et al.
	www.clinchem.org /cgi/reprint/34/2/377 (725 words)

	Carotenoids - Vitacost
		Northern blot analysis indicated that alpha-carotene caused maximum suppression of the level of the N-myc messenger RNA of GOTO cells.
		This suppression occurred within 18 hours of alpha-carotene treatment, after which the level of the N-myc messenger RNA gradually recovered to the basal level.
	www.vitacost.com /science/medstudies.cfm?litid=6 (6543 words)

	E number
		E155 Brown HT, Chocolate brown HT E155 Brown HT, Chocolate brown HT E160a Alpha-carotene, Beta-carotene, Gamma-carotene PAR
		">E160f Ethyl ester of beta-apo-8'-carotenic acid (C 30)
	www.33beat.com /E_number.html (1754 words)

	Skibsted, Leif Horsfelt
		Leif H. Skibsted, Charlotte U. Carlsen, Maiken V. Kröger-Ohlsen, Rikke V. Hedegaard, Bo Martin Bibby & Dorthe Kristensen: Antioxidants and proxidants in milk-like emulsions: Effect of ascorbate, urate, alpha-tocopherol and beta-carotene on early events in lipid oxidation.
		Jian-Ping Zhang, Ritsuko Fujii, Yasushi Koyama, Ferdy S. Rondonuwu, Yasutaka Watanabe, Alan Mortensen & Leif H. Skibsted: The 1 Bu-type Singlet State of β-Carotene as a Precursor of the Radical Cation Found in Chloroform Solution by Subpicosecond Time-resolved Absorption Spectroscopy.
		Ritsuko Fujii, Yasushi Koyama, Alan Mortensen & Leif H. Skibsted: Generation of radical cation of ß-carotene in chloroform via the triplet state as revealed by time-resolved absorption spectroscopy.
	staff.mli.kvl.dk /cgi-bin/staff/tmpl-administration/pers-lhs+gb (1754 words)

	Aroma from Carotenoids - Osmanthus
		Among the carotenoids of Osmanthus are all trans-beta-Carotene, all trans-alpha-Carotene and Neo-beta-carotene B. In addition to cis-jasmone, gamma-decalactone and various delta-lactones which contribute to the flavor of Osmanthus, an extensive number of ionone derivatives and Theaspirane derivatives derived from carotenoids are present.
		Osmanthus fragrans is a flower native to China that is valued for its delicate fruity-floral apricot aroma.
		At its heart are rose, osmanthus, plum, peach, muguet, clove, jasmine and carnation followed by a base of musk, sandalwood, tonka and vetiver.
	www.leffingwell.com /osmanthus.htm (1025 words)

	carrot_pigment.html
		The color is due mainly to beta-carotene, with some alpha-carotene, both of which are orange pigments.
		Center left is a "yellow" carrot, whose color is due mainly to xanthophylls (a type of carotene).
		Lower right is a "white" carrot, the color of a carrot with none of these pigments.
	www.cals.wisc.edu /media/news/02_00/carrot_pigment.html (725 words)

	Carotenoid - Wikipedia, the free encyclopedia
		Carotenoids where some of the double bonds have been oxidized such as lutein and zeaxanthin, are known as xanthophylls; the un-oxidized carotenoids such as alpha-carotene, beta-carotene and lycopene are known as carotenes.
		Probably the most well-known carotenoid is the one that gives this group its name, carotene, found in carrots and responsible for their bright orange colour.
		Carotenoids are characterized by a large (35-40 carbon atoms) polyene chain, sometimes terminated by rings.
	en.wikipedia.org /wiki/Carotenoid (374 words)

	Vitamin A (Retinol)
		Plasma levels of beta-carotene, lycopene, canthaxanthin, retinol, and alpha- and tau-tocopherol in cervical intraepithelial neoplasia and cancer.
		Serum retinol concentrations in children are affected by food sources of beta-carotene, fat intake, and antihelmintic drug treatment.
		Effect of intestinal helminth infection on retinol and beta-carotene status among rural Nepalese.
	www.umm.edu /altmed/ConsSupplements/VitaminARetinolcs.html (4638 words)

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Topic: Alpha-carotene

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In the News (Mon 21 Dec 09)