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By B. J. F. Hudson

Advancements within the knowing of foodstuff protein constitution, behaviour and functions proceed apace. a lot of those have, some time past decade, been pronounced and evaluated within the sequence 'Developments in meals seasoned­ teins' , comprising seven volumes, with a complete of fifty five chapters. The time has now come to re-assess the various themes reviewed in that sequence and so as to add sure others. notwithstanding, rather than assembling, a few­ what at random, meals protein subject matters from particularly disparate fields in indi­ vidual volumes, now we have made up our minds to assemble homogeneous teams of subject matters, each one representing a selected quarter of the topic. lower than the final topic of 'Progress in foodstuff Proteins' the 1st of those teams covers 'Biochemistry' . Readers will word that, notwithstanding six of the themes reviewed during this quantity are new, 5 of them have already featured in 'Developments in nutrition Proteins'. those final are in lively study fields within which new strengthen­ ments were of detailed importance. during this experience, for this reason, they're welcome updates.

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Cherry. ACS Publication, Am. Chern. , Washington, DC, 1982, pp. 327-356. 29. , Protein hydration - its role in stabilizing the helix conformation of protein. In Water Relations of Foods, ed. R. Duckworth. Academic Press, NY, 1975, pp. 73-92. 30. , Nucleic acids, peptides and proteins. In Water, A comprehensive Treatise, ed. F. Franks. Plenum Press, NY, 1975, pp. 305-518. 31. Melander, W. , Effect of neutral salts on the formation and dissociation of protein aggregates. 1. , 2(2) (1977) 141-161.

56. Labuza, T. , An analysisofthe water binding in gels. J. , 44 (1979) 1379-1394. 57. Hermannsson, A. , Gel characteristics-waterbinding properties of blood plasma gels and methodological aspects on the water-binding of gel systems. J. , 47 (1982) 1955-1959. 58. Hermannsson, A. , Gel characteristics-structure as related to texture and waterbinding of blood plasma gels. J. , 47 (1982) 1965-1972. 32 MARILYNN I. SCHNEPF 59. ett, P. , Effect of pH and of succinylation on the water retention properties of coagulated frozen and thawed egg albumin.

However, these methods employ dilute protein solutions which may represent foaming or emulsification properties, but not gelation involving large concentrations of proteins. g. cysteine hydrochloride reduces disulphide bonds. However, the obvious problem here is that it is not possible to ascertain whether for example disulphide groups within the individual proteins are being reduced, thereby affecting gelation, or whether the linkages between the two types of protein are disrupted. In some studies reagents are used to block certain groups in individual proteins prior to mixing, whereas in other studies reagents are added after gelation.

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