Abstract:
A new type of maltodextrin syrup is described having functional properties of a corn syrup having a DE of between 35 -45 while having a DE value less than 20. In the most general embodiment, the syrup contains no more than 70% of total saccharides with a DP of less than 10 while at the same time having least 50% of the saccharides do have a DP of less than 10. The remainder of the saccharides have a DP of 10 or more. For those saccharides having a DP of less than 10 the distribution is weighted toward the higher end with saccharides having a DP of 5 to 9 being more than the saccharides having a DP of 1 to 4.
Abstract:
The present invention advantages over conventional methods and products. In an aspect, a method comprises separating a mixture of allulose, fructose, glucose, and glucooligosaccharides, wherein the separating comprises using simulated moving bed chromatography, and recovering allulose at a high purity and yield. In an aspect,the simulated moving bed ("SMB") chromatography to separate a fraction enriched with allulose from a fraction enriched with fructose and glucose, and to separate a fraction enriched with fructose from a fraction enriched with glucose. In an aspect, the method provides separation of an allulose from a mixture of allulose, fructose, and D-glucose, wherein the mixture is produced from high fructose corn syrup ("HFCS") when HFCS is contacted with an allulose epimerase. In an aspect, the method produces a high quality allulose product. In an aspect, the fraction enriched with fructose can be recycled to contact the allulose epimerase.
Abstract:
Disclosed herein are methods for synthesizing 1,2,5,6-hexanetetrol (HTO), 1,6 hexanediol (HDO) and other reduced polyols from C5 and C6 sugar alcohols or R glycosides. The methods include contacting the sugar alcohol or R-glycoside with a copper catalyst, most desirably a Raney copper catalyst with hydrogen for a time, temperature and pressure sufficient to form reduced polyols having 2 to 3 fewer hydoxy groups than the starting material. When the starting compound is a C6 sugar alcohol such as sorbitol or R-glycoside of a C6 sugar such as methyl glucoside, the predominant product is HTO. The same catalyst can be used to further reduce the HTO to HDO.
Abstract:
A process for production of C5 and C6 sugar enriched syrups from lignocellulosic biomass and fermentation products therefrom is described. A lignocellulosic biomass is treated with a C 1 -C 2 acid (e.g., acetic acid) with washing thereof with a C 1 -C 2 acid miscible organic solvent, (e.g., ethyl acetate). A soluble hemicellulose and lignin enriched fraction is obtained separately from a cellulose pulp enriched fraction and lignin is removed from the soluble hemicellulose fraction. These fractions contain acylated (e.g., acetylated) cellulose and hemicellulose, which are deacylated by treatment with an alkali and/or with an acetyl esterase enzyme. The deacylated fractions are then digested with suitable cellulolytic and/or hemicellulolytic enzymes, preferably in the presence of non-ionic detergent to yield the C5 and C6 enriched syrups. Also described are method of fermentation of the syrups to make ethanol to at least 7% w/vol by separate hydrolysis and fermentation (SHF) or simultaneous hydrolysis and fermentation (SSF) methods.
Abstract:
Disclosed herein is a newly discovered problem and solution for engineering S. cerevisiae to ferment xylose to make ethanol utilizing xylose isomerase to convert xylose to xylulose for entry, via xylulokinase, into the pentose phosphate pathway. When grown on a media containing xylose xylitol tends to accumulate in the cell despite the absence of xylose reductase activity in S. cerevisiae. Xylitol inhibits the activity of xylose isomerases. One solution described is to simultaneously express an exogenous xylitol dehydrogenase along with the exogenous xylose isomerase while optionally also overexpressing xylulokinase in the absence of expression of a xylose reductase. Another solution is a xylose isomerase from Bacteroides fragilis which is less inhibited by xylitol than other xylose isomerases, exemplified by E.coli xylose isomerase. Expression ofthe Bacteroidesfragilis xylose isomerase may be used alone, or in combination with expression ofaxylitol dehydrogenase and optionally over expression of xylulokinase to improve ethanol production from xylose.
Abstract:
Methods and apparatus for optimising, improving or maximising the efficiency of an acousto-optic lens (AOL) system are disclosed. Data relating to efficiency is used to select drive frequencies of the acousto-optic devices (AODs) forming the AOL, thereby both increasing the usable field of view and reducing a prior art patternation problem. Preferably according to the invention, drive frequencies are selected that maximise efficiency of transmission through the AOL. When scanning, the centre of each scan is optimised to be of maximum efficiency.
Abstract:
The invention relates to a method and apparatus for providing hydration fluids. The invention allows for a 'background' rate of providing a hydration fluid to be automatically supplied by an apparatus to a patient, for example intravenously, and for the patient to receive an extra amount of hydration fluid, or 'bolus dose', to be provided when the patient sends a signal to the apparatus. In preferred embodiments the background supply rate, the volume and rate of supply of the bolus dose and the maximum extra volume that can be provided as bolus doses in a given time can be set, for example, by a nurse.
Abstract:
The disclosure pertains to a process for oxidation of furan aldehydes such as 5- hydroxymethyl)furfural (HMF) and derivatives thereof such as 5-(alkoxymethyl)furfural (AMF), 5-(aryloxymethyl)furfural, 5-(cycloalkoxy-methyl)furfural and 5-(alkoxycarbonyl)furfural compounds in the presence of dissolved oxygen and a Co(II), Mn(II), Ce(III) salt catalyst or mixtures thereof. The products from HMF can be selectively chosen to be predominantly 2,5- diformylfuran (DFF), particularly by inclusion of an aliphatic ketone, like methyl ethyl ketone, or can be further oxidized to 2,5-furandicarboxylic acid (FDCA) by the omission of methyl ethyl ketone and inclusion of bromide.. When the reactant is an ether derivative of HMF the products are surprisingly ester derivatives where either both the ether and aldehyde functional groups have been oxidized or just the ether function group thereby producing one or both of 5-ester-furan-2- acids (i.e., 5-alkoxycarbonylfurancarboxylic acids) or 5-ester-furan aldehydes, (i.e.,- alkoxycarbonylfurfurals a. k. a , 5 -(alkoxycarbonyl)furfural). (I)
Abstract:
In one embodiment the invention relates to a method of initiating cardiomyocyte differentiation in a responsive mammalian cell, which comprises introducing into the cell an effective amount for initiating cardiomyocyte differentiation within the cell of CSX/Nkx2.5 protein or a functionally equivalent analogue, variant or fragment thereof. In another embodiment the invention relates to a method of treatment of a patient suffering from or prone to suffer from heart failure or ischaemic heart disease, which comprises removing from the patient one or more responsive cells and culturing the cells in a suitable medium, introducing into the cells an effective amount for initiating cardiomyocyte differentiation of CSX/Nkx2.5 protein or a functionally equivalent analogue, variant or fragment thereof and subsequently returning the cells or cells derived from them to the patient. In a further embodiment the invention relates to a method of treatment of a patient suffering from or prone to suffer from heart failure or ischaemic heart disease, which comprises introducing into responsive cells of the patient an effective amount of CSX/Nkx2.5 protein or a functionally equivalent analogue, variant or fragment thereof.
Abstract:
The invention relates to a method for non-invasive determination of oxygen saturation of blood within a deep vascular structure of a human patient comprising locating on skin of the patient in a vicinity of the deep vascular structure of interest emitter and receiver elements of a light oximeter device, wherein optimal location of said elements is achieved through matching of a plethysmography trace obtained from the oximeter device to known plethysmography characteristics of the deep vascular structure of interest, and wherein oxygen saturation is determined from a ratio of light absorbed at different wavelengths by haemoglobin in the blood within the vascular structure of interest. The invention also relates to modified oximetry devices capable of carrying out the method.