Arabitol

About: Arabitol is a research topic. Over the lifetime, 388 publications have been published within this topic receiving 8398 citations. The topic is also known as: D-(+)-Arabitol & D-arabitol.

Carbohydrate metabolism of the sugarcane smut fungusUstilago scitaminea

Abstract: Ustilago scitaminea synthesizes specific carbohydrates, mainly erythritol and mannitol, plus smaller quantities of arabitol, inositol, and trehalose. Intensive secretion of erythritol is obtained when the fungus is grown in liquid culture. Glucose, fructose, or sucrose can be used interchangeably as carbon sources by the fungus, sucrose being quickly inverted.

Screening of environmental yeasts for the fermentative production of arabitol from lactose and glycerol

Abstract: Arabitol is a sugar alcohol, stereoisomer to xylitol, which is enlisted among the main target for biorefineries. It can serve as low calorie sweetener and as building block in the enantiopure synthesis of immunosuppressive glycolipids, herbicides, and drugs. Several studies described the fermentative production of arabitol by osmophilic yeasts, cultured with high concentrations of D-glucose. The utilization of cheaper carbon sources, such as glycerol or lactose, is of great interest for biorefinery implementation, but information on exploitation to arabitol production is still scarce. In the present study 50 yeasts belonging to 24 ascomycetous species were screened for the ability to grow and produce arabitol in presence of 80 g/L lactose or glycerol. Production from lactose was generally unsuccessful, the best producer being Kluyveromyces lactis WC 1401 with 0.94 g/L in 160 h. Production from glycerol was promising, with Zygosaccharomyces rouxii WC 1206, Pichia guilliermondii CBS 566, Hansenula anomala WC 1501, and Candida freyschussii ATCC 18737 yielding 3 to 4.5 g/L arabitol, with conversion yield (YP/S) ranging from 11 to 21.7%. Batch growth with high initial glycerol amount (160 g/L) resulted in higher production, with H. anomala WC 1501 yielding 10.0 g/L arabitol (YP/S = 12%) in 160 h. Preliminary bioreactor fermentations with H. anomala WC 1501 indicated that production is not growth associated and revealed some major parameters affecting production, such as the pH and the C:N ratio, that will be the target of following studies aiming at process optimization. Cultivation under controlled oxygenation (DOT = 20%) and pH (≥ 3.0) resulted in improvement in the performance of H. anomala WC 1501, yielding 16.1 g/L arabitol. Cultivation in a medium with high C:N ratio, lacking inorganic nitrogen yielded 17.1 g/L arabitol. Therefore, this strain was selected for the development of a fed-batch process, aiming to improve the efficiency of the biomass, generated in the growth phase, and increasing the production in the stationary phase.

Method for preparing arabitol by flammulina velutipes

Abstract: The invention relates to a method for preparing arabitol by flammulina velutipes, which utilizes the characteristic that flammulina velutipes sporocarp contains rich arabitol to prepare the low-cost and environment-friendly arabitol by taking the flammulina velutipes sporocarp as a raw material; and the product can be taken as natural sweetener and functional food raw material. The method comprises the steps of: drying the fresh flammulina velutipes sporocarp, and then using high-concentration alcohol to soak or carry out reflux extraction on the dried flammulina velutipes sporocarp; carrying out vacuum concentration on the leach liquor to recover ethanol; putting the concentrated solution in the environment of 0-10 DEG C; separating out the arabitol by crystallization; filtering or centrifuging while the arabitol is cool to obtain arabitol crystal; then, carrying out recrystallization on the arabitol crystal by methanol; continuously carrying out vacuum concentration on the separated mother liquor of the crystal to recover ethanol; and repeating the operation of crystallization and recrystallization to improve the yield of the arabitol. In order to save the cost, the method is more suitable for taking defective flammulina velutipes sporocarp or the head cut from the flammulina velutipes sporocarp as raw material. The technology has the characteristics of being simple in equipment, saving the cost and protecting the environment, thus improving the economic benefit of the flammulina velutipes industry.

Process for producing sugar alcohol and sugar from agricultural product or agricultural by-product

Abstract: Disclosed is an inexpensive and convenient process for producing a sugar alcohol and/or a sugar, which can utilize an agricultural product or agricultural by-product containing a component derived from a cell wall such as cellulose, hemicellulose and pectin without requiring any pretreatment for converting the component into a water-soluble material with an acid, an alkali or an enzyme and does not require neutralization with a pH-adjusting agent, an acid or an alkali or the like. A sugar alcohol such as arabitol, sorbitol and mannitol and/or a sugar such as arabinose, glucose and maltose can be produced conveniently at low cost by heating or heating under pressure an agricultural product or agricultural by-product containing a component derived from a cell wall without any modification or after simply mechanically grinding the agricultural product or agricultural by-product, in the presence or absence of a catalyst.