By George Charalambous

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The millions of axons from the receptor sheet wind their way through the holes in the cribiform plate to synapse with cells in the olfactory bulb. The bipolar olfactory receptor neurons are therefore in contact with both the external world and the central nervous system. Neurophysiological research on the olfactory system is in a rather undeveloped state. Unlike the work on the gustatory system, it does not provide an adequate model for analysis and interpretation. Productive physiological research on the olfactory system has been greatly hampered by the complexity of the system (the olfactory nerve has more individual fibers than all other sensory nerves combined) and 24 JAMES C.

On the tongue, taste buds are localized on protuberances known as papillae. The taste buds on the front two thirds of the tongue are located on the dorsal surface of the small fungiform papillae. At the rear of the tongue the taste buds are located in the foliate papillae and the vallate papillae. The posteriorly located chemosensory complexes contain large numbers of taste buds together with specialized secretory glands. Three sensory ganglia innervate the taste buds, with each ganglion innervating buds on distinct locations.

GC profiles of the aroma compounds produced by three different genera of soy sauce yeasts in a synthetic medium. GC analysis was performed on a glass capillary column. 42 TETSUO AISHIMA (2). Headspace Method (20). Refined N 2 gas was introduced into the 100 ml of soy sauce sample at 45°C for 2 hrs. d. and 15 cm length, containing 50 mg of Tenax GC (60-80 mesh), was used for trapping the headspace volatiles. The sample collection was performed at 25°C. Then refined N 2 gas was passed through at the rate of 30 ml/min for 30 min in order to remove the water collected in the trap.

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