About: Bixin is a research topic. Over the lifetime, 384 publications have been published within this topic receiving 7898 citations. The topic is also known as: 6'-methyl hydrogen 9'-cis-6,6'-diapocarotene-6,6'-dioate & 6'-methyl hydrogen 9'-Z-6,6'-diapocarotene-6,6'-dioate.
TL;DR: The most abundant water soluble natural food colors are betacyanins and anthocyanins and their synergistic effects and chemical interactions at various concentrations were evaluated.
Abstract: The most abundant water soluble natural food colors are betacyanins and anthocyanins Similarly, lycopene, bixin, β-carotene, and chlorophyll are water insoluble colors Pure betanin, bixin, lycopene, chlorophyll, β-carotene, and cyanidin-3-O-glucoside were isolated from Beta vulgaris, Bixa orellana, Lycopersicum esculentum, Spinacia oleracea, Daucus carrota, and Prunus cerasus, respectively These natural pigments, alone and in combination, were evaluated for their relative potencies against cyclooxygenase enzymes and tumor cell growth inhibition by using MCF-7 (breast), HCT-116 (colon), AGS (stomach), CNS (central nervous system), and NCI-H460 (lung) tumor cell lines Among the colors tested, betanin, cyanidin-3-O-glucoside, lycopene, and β-carotene inhibited lipid peroxidation However, all pigments tested gave COX-1 and COX-2 inhibition and showed a dose-dependent growth inhibition against breast, colon, stomach, central nervous system, and lung tumor cells, respectively The mixtures of these pigment
TL;DR: In this article, the application of natural dyes extracted from the seeds of the achiote shrub (Bixa orellana L.) in dye-sensitized solar cells (DSCs) was explored.
TL;DR: Bixin was encapsulated by spray-drying with gum arabic or maltodextrin, and the stability was evaluated in aqueous solution both under illumination or in the dark at 21 °C as mentioned in this paper.
TL;DR: Introduction of these three genes in Escherichia coli engineered to produce lycopene induced bixin synthesis is introduced, thus expanding the supply of this economically important plant product.
Abstract: Bixin, also known as annatto, is a seed-specific pigment widely used in foods and cosmetics since pre-Columbian times. We show that three genes from Bixa orellana, native to tropical America, govern bixin biosynthesis. These genes code for lycopene cleavage dioxygenase, bixin aldehyde dehydrogenase, and norbixin carboxyl methyltransferase, which catalyze the sequential conversion of lycopene into bixin. Introduction of these three genes in Escherichia coli engineered to produce lycopene induced bixin synthesis, thus expanding the supply of this economically important plant product.
TL;DR: In this paper, a review summarizes the key aspects of the structural determination of bixin and norbixin with special attention to cis-trans isomerization and how this links with its chemical structure, spectroscopic properties, and stability.
Abstract: Annatto food colouring (E160b) has a long history of use in the food industry for the colouring of a wide range of food commodities. The principal colouring component of annatto is the oil-soluble diapo carotenoid bixin, which is the methyl ester of the dicarboxylic acid norbixin and soluble in aqueous alkali. Bixin and norbixin, therefore, exhibit not only physicochemical properties normally associated with carotenoids, but also certain anomalous properties that have an impact on the stability, food colouring applications, and importantly the analysis of annatto. This review summarizes the key aspects of the structural determination of bixin (and norbixin) with special attention to cis-trans isomerization and how this links with its chemical structure, spectroscopic properties, and stability. The oxidative, thermal, and photo-stability of annatto and the subsequent implications for its use in the colouring of foods, food processing, and the analysis of foods and beverages are discussed along with importa...