P-Fructose

Phosphofructokinase-1 T T Insulin Glucagon (cAMP) AMP, fructose 6-phosphate, P, fructose 2,6-bisphos-phate Citrate (fatty acids, ketone bodies), ATP, glucagon (cAMP)... 

Frc-6-P = fructose-6-phosphate Glc-1-P = glucose-1-phosphate PPP = pentose phosphate pathway UTP = uridyl triphosphate... 

PFK = phosphofructokinase PK = pyruvate kinase G-6-P = glucose-6-phosphate F-6-P = fructose-6-phosphate F-1,6bisP = fructose-1,6 bis phosphate... 

Fructose is sweeter than sucrose at low temperatures ( 5° C) at higher temperatures, the reverse is true. At 40°C, they have equal sweetness, the result of a temperature-induced shift in the percentages of a- and p-fructose anomers. The taste of sucrose is syneigistic with high intensity sweeteners (eg, sucralose and aspartame) and can be enhanced or prolonged by substances like glycerol monostearate, lecithin, and maltol (19). 

Describe the role of P-fructose-2,6-bisphosphate in the control of the further breakdown and resynthesis of glucose 1-phosphate. 

PQQ-fructose dehydrogenase NAD(P)-fructose dehydrogenase gelatine, juice, artificial sweeteners indicator... 

Schorr-Galindo, S., Fontana, A., and Guiraud, J.P., Fructose syrups and ethanol production by selective fermentation, Cum Microbiol., 30, 325-330, 1995. 

FIGURE 10.20 The action of fructan 1-exohydrolase and fructan fructan 1-fructosyltransferase in dormant and sprouting tubers on inulin depolymerization. Abbreviations 1-feh = fructan 1-exohydrolase 1-fft = fructan fructan 1-fructosyltransferase hk = hexokinase spp = sucrose phosphate phosphatase sps = sucrose phosphate synthase GF = sucrose G = glucose F = fructose GFF = 1-ketose GF-P = sucrose phosphate UDP-G = uridine diphosphate glucose F-6-P = fructose-6-phosphate. 

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