Fructose content

Conversion based on the fructose content of the starting materiaf at 60 min reaction time. 

Vosburgh19 gives tables of the specific rotations of aqueous solutions of fructose at different temperatures and concentrations. He deduced the following formulas 1, 2 and 3 which are useful for calculating the fructose content of invert sugar of known specific rotation ... 

The method described involves hydrolysis of Jerusalem artichoke polyfructosan and thermal treatment. The method enables increased fructose content to be obtained. It may be used for the treatment of patients suffering diabetes mellitus and obesity. 

Heat-stable amylases are frequently used in both the United States and Japan to produce syrups with a high fructose content from corn starch. 

D-Fructose-containing products substantially higher in D-fructose content than the conventional, high-D-fructose corn-syrup can also be made by applying various fractionation methods to the conventional products. 

HFCS is a concentrated (40-45% dry solids content) aqueous solution of a mixture of fructose (45%) and glucose (55%) which is used as a sweetener in liquid applications, in particular soft drinks. It is a direct replacement for, and competitor with, sucrose and has almost the same sweetening power (on a dry weight basis). Products with a further enhanced fructose content can be obtained by chromatography, usually over a sulphonic acid resin in the calcium form. 

Glucose-fructose syrup is principally used in the food industry. To increase the sweetness of the syrup the fructose content is raised by isomerization. Practically available syrups contain 42 or 55 wt.% (dry base) fructose (Schenck, 2003). 

Unfortunately, no other enzymatic methods have been adopted for the determination of other sugars in seawater. A method for the determination of fructose would be of special interest since Mopper (1977), Meyer-Reil et al. (1978) and Mopper et al. (1980) have shown that this sugar may contribute significantly to the total free monosaccharide content of water. The methods used by Ruchti and Kunkler (1966) for the estimation of the glucose, saccharose and fructose contents of freshwaters may be successfully adapted for analysis in marine waters. 

In rats orally administered 100 mg neem leaf powder daily (average rat weight 185 g) for 24 days, a decrease in the total sperm count, sperm motility, and forward velocity in vas deferens fluid was observed. The percentage of abnormal sperm increased and the fructose content decreased (Ghosesawar et al. 2003). 

Ahmed, M., R.N. Ahamed, R.H. Aladakatti, and M.G. Ghosesawar. 2002. Reversible anti-fertility effect of benzene extract of Ocimum sanctum leaves on sperm parameters and fructose content in rats. /. Basic Clin. Physiol. Pharmacol. 13(l) 51-59. 

---