The so-called ambiguity of taste perception of D-mannose has been traced to actual differences in taste between the two anomers of this substance. Preliminary data indicate strongly that the alpha-anomer is sweet (sucrose-like) and the beta-anomer is bitter (quinine-like). The difference in taste is attributed to the slight difference in structures of the anomers.
CHEMISTRYthe analytical group of the research and process department of the Union Oil Co. of California. Supervisory' personnel and management are provided with statistical reports that give a comprehensive survey of the operations of the group and also permit realistic predictions of future requirements for space, equipment, and personnel. The expense of centralizing all paper work and movement of samples is more than compensated by savings in analyst's and client's time. Furthermore, more effective utilization of the training and experience of the analysts is possible.These techniques should be effective in any analytical laboratory' of over 30 persons that is serving a research group. Not all of the procedures would necessarily' be advantageous, because the basic policies of another laboratory' might be sufficiently' different to make some procedures inefficient or even unnecessary. These techniques were not all developed in this laboratory; in fact, they are a composite of ideas from many laboratories.This paper is presented with the hope that it will be provocative and stimulate greater interchange of ideas on the subject. No claim is made that this is the best plan, even for this laboratory, but it is hoped that it will encourage readers to get in contact with the authors and exchange ideas for mutual benefit.
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