β-Carotene adds nutritious value and determines the color of many fruits, including melon (Cucumis melo). In melon mesocarp, β-carotene accumulation is governed by the Orange gene (CmOr) golden single-nucleotide polymorphism (SNP) through a yet to be discovered mechanism. In Arabidopsis (Arabidopsis thaliana), OR increases carotenoid levels by posttranscriptionally regulating phytoene synthase ...

Mammalian genomes encode two provitamin A-converting enzymes as follows: the β-carotene-15,15'-oxygenase (BCO1) and the β-carotene-9',10'-oxygenase (BCO2). Symmetric cleavage by BCO1 yields retinoids (β-15'-apocarotenoids, C20), whereas eccentric cleavage by BCO2 produces long-chain (>C20) apocarotenoids. Here, we used genetic and biochemical approaches to clarify the contribution of these enzy...

Abstract Carrot (Daucus carota L) is a type of functional food plant that often consumed by the public, one nutrients in carrots β-carotene. Benefits β-carotene for body to prevent and reduce cancer risk. In addition, can be added processed products are popular with consumers, such as meatballs. content formulated milkfish The purpose was study processing using drying boiling method its applica...

This study aimed to recover β-carotene from peels produced as a by-product during the industrial processing of pumpkins using high-efficiency technology that produces no waste and is harmless environment. β-Carotene extraction pumpkin peel was carried out by maceration ultrasound-assisted technique, with sunflower oil instead n-hexane an environment-friendly solvent. Influence lecithin:PGPR (po...

Carotenes are a group of fat-soluble pigments in many fruits and vegetables associated with several important biological effects, like protection against the development of some forms of cancer and cardiovascular disease. The carotene bioavailability in plant foods, i.e. the fraction of ingested carotenes taken up and utilised in the body, is often increased by processing. The increased bioavai...

BACKGROUND/OBJECTIVES A pivotal role of oxidative stress has been emphasized in the pathogenesis as well as in the disease progression of Parkinson's disease (PD). We aimed at investigating serum levels of antioxidant vitamins and elucidating whether they could be associated with the pathogenesis and progression of PD. MATERIALS/METHODS Serum levels of retinol, α- and γ-tocopherols, α- and β-...

INTRODUCTION Several adverse effects of radiotherapy have been associated with the process of increased oxidative stress in the organism. In this context, vitamin A noteworthy for its important role in combating oxidative stress, in addition to its chemoprotective effect. OBJECTIVE To assess the serum levels of vitamin A (retinol and β-carotene) and their relationship to breast cancer staging...

The halotolerant green alga Dunaliella salina (isolate SEA003) recently isolated from salt march at Zaranik nature reserve, North Sinai , (Egypt) was cultivated in the arti ficial seawater medium (ASW) with di fferent sal ini ty levels (0.5, 1, 2, 3, and 4 M), under continuous i llumination of two dif ferent li ght intensities: 50 and 200 μmol m 2s , during 30 day of incubation. The maximum gro...

OBJECTIVE Increased oxidative stress and immune dysfunction are implicated in preeclampsia (PE) and may contribute to the two- to fourfold increase in PE prevalence among women with type 1 diabetes. Prospective measures of fat-soluble vitamins in diabetic pregnancy are therefore of interest. RESEARCH DESIGN AND METHODS Maternal serum carotenoids (α- and β-carotene, lycopene, and lutein) and v...

Plant carotenoids are synthesized and accumulated in plastids through a highly regulated pathway. Lycopene β-cyclase (LCYB) is a key enzyme involved directly in the synthesis of α-carotene and β-carotene through the cyclization of lycopene. Carotenoids are produced in both carrot (Daucus carota) leaves and reserve roots, and high amounts of α-carotene and β-carotene accumulate in the latter. In...