| 摘要 |
1,152,610. Dispensible sugar agglomerates. FOREMOST-MCKESSON Inc. 7 Dec., 1967 [14 Dec., 1966], No. 55668/67. Headings A2B and A2E. Low density dry discrete products consisting mainly of sugar (lactose) are prepared by subjecting a liquid concentrate of the sugar containing seed crystal of the sugar to beating in the presence of a whipping agent and with a gas to form a homogenous foam, and then spray drying the foam by atomizing it without shattering impact to make foam particles and dispersing the foam particles in a drying gas. The -resulting discrete particles may be contacted with a warm moist atmosphere rendering the particles sticky and brought in this condition into random contact to form aggregates, from which excess moisture is then removed. The products are free-flowing and readily dispersible in water, have a bulk density of from 80 to 200 grams per litre, and consist of particles that are spheroidal shaped with numerous cells or cavities, the exterior and interior septa walls of the particles being porous and containing fine crystals of the sugar dispersed therein, and are of a size ranging from 30 to 500 microns, with the major part of the material ranging from 80 to 250 microns, in size. The lactose syrup employed may have a concentration of from 35 to 60% solids with the fine crystals present amounting to between 5 and 55% of the total lactose content, the whipping agent may be soya bean protein hydrolysate (amounting to 0.7% of the liquid content of the foam), the gas air, nitrogen or carbon dioxide. The final dried product may contain artificial sweetener e.g. 5.4% calcium cyclamate and 0.45% calcium saccharin. The beating takes place at a pressure within the range of 40 to 120 lbs. per sq. inch and the foam produced is ex- .panded in passing through a restricting orifice from the beating stage into a stacked-disc centrifugal atomizer. The foam particles are discharged from the periphery of the atomizer into currents of hot drying gas within a conical drying chamber. The material may be agglomerated by falling from a conduit 63, Fig. 3B, in a jacketed chamber 62 through an atmosphere of steam introduced through perforations in an annular pipe 71. Warm air circulated through a jacket 65 around the conduit 63, is discharged into the chamber through openings 66 in the lower end of the jacket. |
